In the context of modern holistic education,integrating“ideological and political education”into specialized courses is a new requirement for professional teaching.In order to seamlessly integrate ideological educat...In the context of modern holistic education,integrating“ideological and political education”into specialized courses is a new requirement for professional teaching.In order to seamlessly integrate ideological education into academic disciplines through subtle influence,it is essential to identify and design suitable ideological elements.Based on the interdisciplinary nature of chemical engineering curricula,this paper focuses on core socialist values,patriotic sentiment,professional ethics,and the spirit of scientific innovation.It identifies key ideological elements such as“a strong chemical industry makes a strong nation”and“patriotism and maritime power,”analyzes their manifestations of value,and explores their relevance and significance in ideological education across different chemical engineering courses.展开更多
Chemical synthesis is essential in industries such as petrochemicals, fine chemicals, and pharmaceuticals, driving economic and social development. The increasing demand for new molecules and materials calls for novel...Chemical synthesis is essential in industries such as petrochemicals, fine chemicals, and pharmaceuticals, driving economic and social development. The increasing demand for new molecules and materials calls for novel chemical reactions;however, manual experimental screening is time-consuming. Artificial intelligence (AI) offers a promising solution by leveraging large-scale experimental data to model chemical reactions, although challenges such as the lack of standardization and predictability in chemical synthesis hinder AI applications. Additionally, the multi-scale nature of chemical reactions, along with complex multiphase processes, further complicates the task. Recent advances in microchemical systems, particularly continuous flow methods using microreactors, provide precise control over reaction conditions, enhancing reproducibility and enabling high-throughput experimentation. These systems minimize transport-related inconsistencies and facilitate scalable industrial applications. This review systematically explores recent developments in intelligent synthesis based on microchemical systems, focusing on reaction system design, synthesis robots, closed-loop optimization, and high-throughput experimentation, while identifying key areas for future research.展开更多
The integration of artificial intelli-gence(AI)into chemical engineering marks a transformative era,redefin-ing traditional methodologies with AI-driven approaches.AI has emerged as a powerful ally in tackling complex...The integration of artificial intelli-gence(AI)into chemical engineering marks a transformative era,redefin-ing traditional methodologies with AI-driven approaches.AI has emerged as a powerful ally in tackling complex problems once considered insur-mountable.As chemical engineering grapples with increasingly complex systems and stringent sustainability targets,AI sets the stage for a new generation of solutions.展开更多
Given the current global energy and environmental issues resulting from the fast pace of industrialization,the discovery of new functional materials has become increasingly imperative in order to advance science and t...Given the current global energy and environmental issues resulting from the fast pace of industrialization,the discovery of new functional materials has become increasingly imperative in order to advance science and technology and address the associated challenges.The boom in metal–organic frameworks(MOFs)and MOF-derived materials in recent years has stimulated profound interest in exploring their structures and applications.The preparation,characterization,and processing of MOF materials are the basis of their full engagement in industrial implementation.With intensive research in these topics,it is time to promote the practical utilization of MOFs on an industrial scale,such as for green chemical engineering,by taking advantage of their superior functions.Many famous MOFs have already demonstrated superiority over traditional materials in solving real-world problems.This review starts with the basic concept of MOF chemistry and ends with a discussion of the industrial production and exploitation of MOFs in several fields.Its goal is to provide a general scope of application to inspire MOF researchers to convert their focus on academic research to one on practical applications.After the obstacles of cost,scale-up preparation,processability,and stability have been overcome,MOFs and MOF-based devices will gradually enter the factory,become a part of our daily lives,and help to create a future based on green production and green living.展开更多
The concept of“carbon neutrality”poses a huge challenge for chemical engineering and brings great opportunities for boosting the development of novel technologies to realize carbon offsetting and reduce carbon emiss...The concept of“carbon neutrality”poses a huge challenge for chemical engineering and brings great opportunities for boosting the development of novel technologies to realize carbon offsetting and reduce carbon emissions.Developing high-efficient,low-cost,energy-efficient and eco-friendly microfluidicbased microchemical engineering is of great significance.Such kind of“green microfluidics”can reduce carbon emissions from the source of raw materials and facilitate controllable and intensified microchemical engineering processes,which represents the new power for the transformation and upgrading of chemical engineering industry.Here,a brief review of green microfluidics for achieving carbon neutral microchemical engineering is presented,with specific discussions about the characteristics and feasibility of applying green microfluidics in realizing carbon neutrality.Development of green microfluidic systems are categorized and reviewed,including the construction of microfluidic devices by bio-based substrate materials and by low carbon fabrication methods,and the use of more biocompatible and nondestructive fluidic systems such as aqueous two-phase systems(ATPSs).Moreover,low carbon applications benefit from green microfluidics are summarized,ranging from separation and purification of biomolecules,high-throughput screening of chemicals and drugs,rapid and cost-effective detections,to synthesis of fine chemicals and novel materials.Finally,challenges and perspectives for further advancing green microfluidics in microchemical engineering for carbon neutrality are proposed and discussed.展开更多
Biology is a rich source of great ideas that can inspire us to find successful ways to solve the challenging problems in engineering practices including those in the chemical industry. Bio-inspired chemical engineerin...Biology is a rich source of great ideas that can inspire us to find successful ways to solve the challenging problems in engineering practices including those in the chemical industry. Bio-inspired chemical engineering(Bio Ch E)may be recognized as a significant branch of chemical engineering. It may consist of, but not limited to, the following three aspects: 1) Chemical engineering principles and unit operations in biological systems; 2) Process engineering principles for producing existing or developing new chemical products through living ‘devices';and 3) Chemical engineering processes and equipment that are designed and constructed through mimicking(does not have to reproduce one hundred percent) the biological systems including their physical–chemical and mechanical structures to deliver uniquely beneficial performances. This may also include the bio-inspired sensors for process monitoring. In this paper, the above aspects are defined and discussed which establishes the scope of BioChE.展开更多
Chemical industry project management involves complex decision making situations that require discerning abilities and methods to make sound decisions. Chemical engineers as project managers are faced with decision en...Chemical industry project management involves complex decision making situations that require discerning abilities and methods to make sound decisions. Chemical engineers as project managers are faced with decision environments and problems in chemical industry projects that are complex. Multiple-criteria decision making （MCDM） approaches are major parts of decision theory and analysis. This paper presents all of MCDM approaches for use in chemical engineering management decisions. In this work, case study is Research and Development （R＆D） project selection in chemical industry. The ability to make sound decisions is very important to success of R＆D projects. It is hoped that this work will provide a ready reference on MCDM and this will encourage the application of the MCDM in chemical engineering management.展开更多
Rechargeable lithium-ion batteries(LIBs)afford a profound impact on our modern daily life.However,LIBs are approaching the theoretical energy density,due to the inherent limitations of intercalation chemistry;thus,the...Rechargeable lithium-ion batteries(LIBs)afford a profound impact on our modern daily life.However,LIBs are approaching the theoretical energy density,due to the inherent limitations of intercalation chemistry;thus,they cannot further satisfy the increasing demands of portable electronics,electric vehicles,and grids.Therefore,battery chemistries beyond LIBs are being widely investigated.Next-generation lithium(Li)batteries,which employ Li metal as the anode and intercalation or conversion materials as the cathode,receive the most intensive interest due to their high energy density and excellent potential for commercialization.Moreover,significant progress has been achieved in Li batteries attributed to the increasing fundamental understanding of the materials and reactions,as well as to technological improvement.This review starts by summarizing the electrolytes for next-generation Li batteries.Key challenges and recent progress in lithium-ion,lithium–sulfur,and lithium–oxygen batteries are then reviewed from the perspective of energy and chemical engineering science.Finally,possible directions for further development in Li batteries are presented.Next-generation Li batteries are expected to promote the sustainable development of human civilization.展开更多
Catalytic membrane reactors(CMRs),which synergistically carry out separations and reactions,are expected to become a green and sustainable technology in chemical engineering.The use of ceramic membranes in CMRs is bei...Catalytic membrane reactors(CMRs),which synergistically carry out separations and reactions,are expected to become a green and sustainable technology in chemical engineering.The use of ceramic membranes in CMRs is being widely considered because it permits reactions and separations to be carried out under harsh conditions in terms of both temperature and the chemical environment.This article presents the two most important types of CMRs:those based on dense mixed-conducting membranes for gas separation,and those based on porous ceramic membranes for heterogeneous catalytic processes.New developments in and innovative uses of both types of CMRs over the last decade are presented,along with an overview of our recent work in this field.Membrane reactor design,fabrication,and applications related to energy and environmental areas are highlighted.First,the configuration of membranes and membrane reactors are introduced for each of type of membrane reactor.Next,taking typical catalytic reactions as model systems,the design and optimization of CMRs are illustrated.Finally,challenges and difficulties in the process of industrializing the two types of CMRs are addressed,and a view of the future is outlined.展开更多
This paper discussed an extended model for flexibility analysis of chemical process. Under uncertainty, probability density function is used to describe uncertain parameters instead of hyper-rectangle, and chanceconst...This paper discussed an extended model for flexibility analysis of chemical process. Under uncertainty, probability density function is used to describe uncertain parameters instead of hyper-rectangle, and chanceconstrained programming is a feasible way to deal with the violation of constraints. Because the feasible region of control variables would change along with uncertain parameters, its smallest acceptable size threshold is presented to ensure the controllability condition. By synthesizing the considerations mentioned above, a modified model can describe the flexibility analysis problem more exactly. Then a hybrid algorithm, which integrates stochastic simulation and genetic algorithm, is applied to solve this model and maximize the flexibility region. Both numerical and chemical process examples are presented to demonstrate the effectiveness of the method.展开更多
Chemical engineers rely on models for design,research,and daily decision-making,often with potentially large financial and safety implications.Previous efforts a few decades ago to combine artificial intelligence and ...Chemical engineers rely on models for design,research,and daily decision-making,often with potentially large financial and safety implications.Previous efforts a few decades ago to combine artificial intelligence and chemical engineering for modeling were unable to fulfill the expectations.In the last five years,the increasing availability of data and computational resources has led to a resurgence in machine learning-based research.Many recent efforts have facilitated the roll-out of machine learning techniques in the research field by developing large databases,benchmarks,and representations for chemical applications and new machine learning frameworks.Machine learning has significant advantages over traditional modeling techniques,including flexibility,accuracy,and execution speed.These strengths also come with weaknesses,such as the lack of interpretability of these black-box models.The greatest opportunities involve using machine learning in time-limited applications such as real-time optimization and planning that require high accuracy and that can build on models with a self-learning ability to recognize patterns,learn from data,and become more intelligent over time.The greatest threat in artificial intelligence research today is inappropriate use because most chemical engineers have had limited training in computer science and data analysis.Nevertheless,machine learning will definitely become a trustworthy element in the modeling toolbox of chemical engineers.展开更多
In the preliminary stage of chemical process design, the choice of chemical reaction route is the key design decision, and the concepts of atom utilization and environmental quotient have become extremely useful tools...In the preliminary stage of chemical process design, the choice of chemical reaction route is the key design decision, and the concepts of atom utilization and environmental quotient have become extremely useful tools. However, the waste quality such as chemical toxicity and other engineering factors have not been taken into account. Therefore, a synthetic route selection index, Iroute, is proposed to determine the suitability of a chemical route in this paper. Iroute considers the effects of 'extended atom economy', material renewability, chemical characteristics and some engineering factors. The extended atom economy concept regards not only the value of the desired product but also the value of byproducts. The methodology by using Iroute to compare different routes is illustrated in case study of cyclohexanone oxime and acrylonitrile manufacture.展开更多
1. Introduction Green chemical engineering is regarded as one of the most effi- cient means of achieving sustainable development in chemical in- dustrial processes. It can be divided into two main categories： Green ...1. Introduction Green chemical engineering is regarded as one of the most effi- cient means of achieving sustainable development in chemical in- dustrial processes. It can be divided into two main categories： Green product engineering. Examples include the develop- ment of new catalysts and the development and use of renewa- ble resources （e.g., solar energy and biomass）.展开更多
The industrial revolution helped to improve living standards and dramat- ically increase the global population; however, it simultaneously caused severe environmental pollution and the issue of climate warming due to ...The industrial revolution helped to improve living standards and dramat- ically increase the global population; however, it simultaneously caused severe environmental pollution and the issue of climate warming due to the rapid consumption of fossil-based energy. For example, although chem- ical products address the needs and demands of daily life, their production also consumes massive quantities of natural resources and generates unwanted byproducts.展开更多
As a branch of membrane separation technology,liquid membrane has attracted great attention and expanded investigations in biological chemical engineering,with life and health concern in ecosystems.Composed of membran...As a branch of membrane separation technology,liquid membrane has attracted great attention and expanded investigations in biological chemical engineering,with life and health concern in ecosystems.Composed of membrane solvent and mobile carrier,liquid membrane was acquired of function,performing the facilitated mass transfer across the diffusive solvent,so as for the separation and delivery achievement with efficacy.In this review,two types of liquid membrane are mainly focused,respectively on supported liquid membrane(SLM)of membrane solvent supporter in necessity,and on emulsion liquid membrane(ELM)of the required interfacial stabilizers and homogenization.Accordingly,the transfer mechanism,compositions,structure and features of SLM and ELM are introduced respectively.Moreover,the current investigations of liquid membrane have been discussed,focusing on the improvements of efficacy and stability in separation&detection,encapsulation and delivery,so as to scale up the favorable and efficient application with bio-life concern.Prospectively,this review could provide comprehensive insight into the bio-applications of liquid membrane,and guidelines for the further investigations on the efficacy and long-term applicable stability,in order to realize the industrialization.展开更多
Based on the study of supply chain(SC) and SC optimization in engineering projects, a mixed integer nonlinear programming(MINLP) optimization model is developed to minimize the total SC cost for international petroche...Based on the study of supply chain(SC) and SC optimization in engineering projects, a mixed integer nonlinear programming(MINLP) optimization model is developed to minimize the total SC cost for international petrochemical engineering projects. A steam cracking project is selected and analyzed, from which typical SC characteristics in international engineering projects in the area of petrochemical industry are summarized. The MINLP model is therefore developed and applied to projects with detailed data. The optimization results are analyzed and compared by the MINLP model, indicating that they are appropriate to SC management practice in engineering projects, and are consistent with the optimal priceeffective strategy in procurement. As a result, the model could provide useful guidance to SC optimization of international engineering projects in petrochemical industry, and improve SC management by selecting more reliable and qualified partner enterprises in SC for the project.展开更多
Biochemical Engineering(BCE)discipline had largely developed from fermentation technology studies from 1950s through 1960s when fermentation emerged as the core technology able to address multiple industrial needs ran...Biochemical Engineering(BCE)discipline had largely developed from fermentation technology studies from 1950s through 1960s when fermentation emerged as the core technology able to address multiple industrial needs ranging from health care products such as antibiotics;food products such as single cell proteins,amino acids,organic acids,and vitamins;liquid fuels and chemicals such as ethanol and acetic acid;and industrial enzymes.展开更多
Increasing importance of heat transfer in chemical engineering science causes that investigation in the field of enhancement techniques is always one of the up-to-date topics for study.In the current comparative analy...Increasing importance of heat transfer in chemical engineering science causes that investigation in the field of enhancement techniques is always one of the up-to-date topics for study.In the current comparative analysis,the thermal enhancement and friction penalty are explored numerically for curved tubes via twisted configuration.To accomplish this,three common geometries namely helical,serpentine,and Archimedes spiral,are considered at different coil-pitches and twist-pitches as well as five Reynolds numbers in the laminar flow regime.The results exhibit noticeable enhancements(up to 60%)in the thermal performance of the twisted cases as compared to the smooth cases.The highest increases are recorded for the serpentine case,followed by the helical and spiral cases.It is found that these enhancements vary via coil-pitch and twist-pitch.Increasing coil-pitch and twist-pitch augments both heat transfer coefficient and pressure drop in all curved-twisted tubes,however,the effects of twist-pitch are more pronounced.To predict Nusselt number and friction factor,new correlations are also proposed.The maximum deviations of the predicted results compared to the simulated data are within±5%.展开更多
Under the background of the continuous combination of science and technology and modern production, the national macro requirements for enterprise construction have been adjusted and changed more obviously than in the...Under the background of the continuous combination of science and technology and modern production, the national macro requirements for enterprise construction have been adjusted and changed more obviously than in the past. It is not simply based on quantitative production, but more emphasis on the upgrading and progress of technology. This change also provides new ideas and ways for enterprise innovation. As an important basis for leading the development trend of the times, chemical enterprises should also receive more attention and attention in this case, especially in terms of chemical design, we should especially emphasize the significance of the application of computer software technology.展开更多
基金Undergraduate Teaching Reform Research Project of Shenyang University of Technology。
文摘In the context of modern holistic education,integrating“ideological and political education”into specialized courses is a new requirement for professional teaching.In order to seamlessly integrate ideological education into academic disciplines through subtle influence,it is essential to identify and design suitable ideological elements.Based on the interdisciplinary nature of chemical engineering curricula,this paper focuses on core socialist values,patriotic sentiment,professional ethics,and the spirit of scientific innovation.It identifies key ideological elements such as“a strong chemical industry makes a strong nation”and“patriotism and maritime power,”analyzes their manifestations of value,and explores their relevance and significance in ideological education across different chemical engineering courses.
基金supported by the National Natural Science Foundation of China(22378227)Shijiazhuang Science and Technology Bureau(231790163A).
文摘Chemical synthesis is essential in industries such as petrochemicals, fine chemicals, and pharmaceuticals, driving economic and social development. The increasing demand for new molecules and materials calls for novel chemical reactions;however, manual experimental screening is time-consuming. Artificial intelligence (AI) offers a promising solution by leveraging large-scale experimental data to model chemical reactions, although challenges such as the lack of standardization and predictability in chemical synthesis hinder AI applications. Additionally, the multi-scale nature of chemical reactions, along with complex multiphase processes, further complicates the task. Recent advances in microchemical systems, particularly continuous flow methods using microreactors, provide precise control over reaction conditions, enhancing reproducibility and enabling high-throughput experimentation. These systems minimize transport-related inconsistencies and facilitate scalable industrial applications. This review systematically explores recent developments in intelligent synthesis based on microchemical systems, focusing on reaction system design, synthesis robots, closed-loop optimization, and high-throughput experimentation, while identifying key areas for future research.
文摘The integration of artificial intelli-gence(AI)into chemical engineering marks a transformative era,redefin-ing traditional methodologies with AI-driven approaches.AI has emerged as a powerful ally in tackling complex problems once considered insur-mountable.As chemical engineering grapples with increasingly complex systems and stringent sustainability targets,AI sets the stage for a new generation of solutions.
基金We acknowledge financial support from the National Natural Science Foundation of China(51621003,21771012,and 22038001)the Science&Technology Project of Beijing Municipal Education Committee(KZ201810005004).
文摘Given the current global energy and environmental issues resulting from the fast pace of industrialization,the discovery of new functional materials has become increasingly imperative in order to advance science and technology and address the associated challenges.The boom in metal–organic frameworks(MOFs)and MOF-derived materials in recent years has stimulated profound interest in exploring their structures and applications.The preparation,characterization,and processing of MOF materials are the basis of their full engagement in industrial implementation.With intensive research in these topics,it is time to promote the practical utilization of MOFs on an industrial scale,such as for green chemical engineering,by taking advantage of their superior functions.Many famous MOFs have already demonstrated superiority over traditional materials in solving real-world problems.This review starts with the basic concept of MOF chemistry and ends with a discussion of the industrial production and exploitation of MOFs in several fields.Its goal is to provide a general scope of application to inspire MOF researchers to convert their focus on academic research to one on practical applications.After the obstacles of cost,scale-up preparation,processability,and stability have been overcome,MOFs and MOF-based devices will gradually enter the factory,become a part of our daily lives,and help to create a future based on green production and green living.
基金the supports of the National Science Foundation of China (22008130, 22025801)the China Postdoctoral Science Foundation (2020M682124)+1 种基金the Qingdao Postdoctoral Researchers Applied Research Project Foundation (RZ2000001426)the Scientific Research Foundation for Youth Scholars from Qingdao University (DC1900014265) for this work
文摘The concept of“carbon neutrality”poses a huge challenge for chemical engineering and brings great opportunities for boosting the development of novel technologies to realize carbon offsetting and reduce carbon emissions.Developing high-efficient,low-cost,energy-efficient and eco-friendly microfluidicbased microchemical engineering is of great significance.Such kind of“green microfluidics”can reduce carbon emissions from the source of raw materials and facilitate controllable and intensified microchemical engineering processes,which represents the new power for the transformation and upgrading of chemical engineering industry.Here,a brief review of green microfluidics for achieving carbon neutral microchemical engineering is presented,with specific discussions about the characteristics and feasibility of applying green microfluidics in realizing carbon neutrality.Development of green microfluidic systems are categorized and reviewed,including the construction of microfluidic devices by bio-based substrate materials and by low carbon fabrication methods,and the use of more biocompatible and nondestructive fluidic systems such as aqueous two-phase systems(ATPSs).Moreover,low carbon applications benefit from green microfluidics are summarized,ranging from separation and purification of biomolecules,high-throughput screening of chemicals and drugs,rapid and cost-effective detections,to synthesis of fine chemicals and novel materials.Finally,challenges and perspectives for further advancing green microfluidics in microchemical engineering for carbon neutrality are proposed and discussed.
文摘Biology is a rich source of great ideas that can inspire us to find successful ways to solve the challenging problems in engineering practices including those in the chemical industry. Bio-inspired chemical engineering(Bio Ch E)may be recognized as a significant branch of chemical engineering. It may consist of, but not limited to, the following three aspects: 1) Chemical engineering principles and unit operations in biological systems; 2) Process engineering principles for producing existing or developing new chemical products through living ‘devices';and 3) Chemical engineering processes and equipment that are designed and constructed through mimicking(does not have to reproduce one hundred percent) the biological systems including their physical–chemical and mechanical structures to deliver uniquely beneficial performances. This may also include the bio-inspired sensors for process monitoring. In this paper, the above aspects are defined and discussed which establishes the scope of BioChE.
文摘Chemical industry project management involves complex decision making situations that require discerning abilities and methods to make sound decisions. Chemical engineers as project managers are faced with decision environments and problems in chemical industry projects that are complex. Multiple-criteria decision making （MCDM） approaches are major parts of decision theory and analysis. This paper presents all of MCDM approaches for use in chemical engineering management decisions. In this work, case study is Research and Development （R＆D） project selection in chemical industry. The ability to make sound decisions is very important to success of R＆D projects. It is hoped that this work will provide a ready reference on MCDM and this will encourage the application of the MCDM in chemical engineering management.
基金the National Key Research and Development Program(2016YFA0202500 and 2016YFA0200102)the National Natural Science Foundation of China(21676160,21776019,and 21825501)the Tsinghua University Initiative Scientific Research Program.
文摘Rechargeable lithium-ion batteries(LIBs)afford a profound impact on our modern daily life.However,LIBs are approaching the theoretical energy density,due to the inherent limitations of intercalation chemistry;thus,they cannot further satisfy the increasing demands of portable electronics,electric vehicles,and grids.Therefore,battery chemistries beyond LIBs are being widely investigated.Next-generation lithium(Li)batteries,which employ Li metal as the anode and intercalation or conversion materials as the cathode,receive the most intensive interest due to their high energy density and excellent potential for commercialization.Moreover,significant progress has been achieved in Li batteries attributed to the increasing fundamental understanding of the materials and reactions,as well as to technological improvement.This review starts by summarizing the electrolytes for next-generation Li batteries.Key challenges and recent progress in lithium-ion,lithium–sulfur,and lithium–oxygen batteries are then reviewed from the perspective of energy and chemical engineering science.Finally,possible directions for further development in Li batteries are presented.Next-generation Li batteries are expected to promote the sustainable development of human civilization.
基金the National Natural Science Foundation of China(20990222,21006047,21706117,and 21706118)the Natural Science Foundation of Jiangsu(BK20170978 and BK20170970)+1 种基金the State Key Laboratory of Material-Oriented Chemical Engineering(ZK201609)the Innovative Research Team Program by the Ministry of Education of China(IRT17R54).
文摘Catalytic membrane reactors(CMRs),which synergistically carry out separations and reactions,are expected to become a green and sustainable technology in chemical engineering.The use of ceramic membranes in CMRs is being widely considered because it permits reactions and separations to be carried out under harsh conditions in terms of both temperature and the chemical environment.This article presents the two most important types of CMRs:those based on dense mixed-conducting membranes for gas separation,and those based on porous ceramic membranes for heterogeneous catalytic processes.New developments in and innovative uses of both types of CMRs over the last decade are presented,along with an overview of our recent work in this field.Membrane reactor design,fabrication,and applications related to energy and environmental areas are highlighted.First,the configuration of membranes and membrane reactors are introduced for each of type of membrane reactor.Next,taking typical catalytic reactions as model systems,the design and optimization of CMRs are illustrated.Finally,challenges and difficulties in the process of industrializing the two types of CMRs are addressed,and a view of the future is outlined.
文摘This paper discussed an extended model for flexibility analysis of chemical process. Under uncertainty, probability density function is used to describe uncertain parameters instead of hyper-rectangle, and chanceconstrained programming is a feasible way to deal with the violation of constraints. Because the feasible region of control variables would change along with uncertain parameters, its smallest acceptable size threshold is presented to ensure the controllability condition. By synthesizing the considerations mentioned above, a modified model can describe the flexibility analysis problem more exactly. Then a hybrid algorithm, which integrates stochastic simulation and genetic algorithm, is applied to solve this model and maximize the flexibility region. Both numerical and chemical process examples are presented to demonstrate the effectiveness of the method.
基金The authors acknowledge funding from the European Research Council(ERC)under the European Union’s Horizon 2020 research and innovation(818607)Pieter P.Plehiers and Ruben Van de Vijver acknowledge financial support,respectively,from a doctoral(1150817N)a postdoctoral(3E013419)fellowship from the Research Foundation-Flanders(FWO).
文摘Chemical engineers rely on models for design,research,and daily decision-making,often with potentially large financial and safety implications.Previous efforts a few decades ago to combine artificial intelligence and chemical engineering for modeling were unable to fulfill the expectations.In the last five years,the increasing availability of data and computational resources has led to a resurgence in machine learning-based research.Many recent efforts have facilitated the roll-out of machine learning techniques in the research field by developing large databases,benchmarks,and representations for chemical applications and new machine learning frameworks.Machine learning has significant advantages over traditional modeling techniques,including flexibility,accuracy,and execution speed.These strengths also come with weaknesses,such as the lack of interpretability of these black-box models.The greatest opportunities involve using machine learning in time-limited applications such as real-time optimization and planning that require high accuracy and that can build on models with a self-learning ability to recognize patterns,learn from data,and become more intelligent over time.The greatest threat in artificial intelligence research today is inappropriate use because most chemical engineers have had limited training in computer science and data analysis.Nevertheless,machine learning will definitely become a trustworthy element in the modeling toolbox of chemical engineers.
文摘In the preliminary stage of chemical process design, the choice of chemical reaction route is the key design decision, and the concepts of atom utilization and environmental quotient have become extremely useful tools. However, the waste quality such as chemical toxicity and other engineering factors have not been taken into account. Therefore, a synthetic route selection index, Iroute, is proposed to determine the suitability of a chemical route in this paper. Iroute considers the effects of 'extended atom economy', material renewability, chemical characteristics and some engineering factors. The extended atom economy concept regards not only the value of the desired product but also the value of byproducts. The methodology by using Iroute to compare different routes is illustrated in case study of cyclohexanone oxime and acrylonitrile manufacture.
文摘1. Introduction Green chemical engineering is regarded as one of the most effi- cient means of achieving sustainable development in chemical in- dustrial processes. It can be divided into two main categories： Green product engineering. Examples include the develop- ment of new catalysts and the development and use of renewa- ble resources （e.g., solar energy and biomass）.
文摘The industrial revolution helped to improve living standards and dramat- ically increase the global population; however, it simultaneously caused severe environmental pollution and the issue of climate warming due to the rapid consumption of fossil-based energy. For example, although chem- ical products address the needs and demands of daily life, their production also consumes massive quantities of natural resources and generates unwanted byproducts.
基金support of National Natural Science Foundation of China(21506028)National Key Research and Development Program of China(2019YFE0119200)Fundamental Research Funds for the Central Universities(DUT20LK43)。
文摘As a branch of membrane separation technology,liquid membrane has attracted great attention and expanded investigations in biological chemical engineering,with life and health concern in ecosystems.Composed of membrane solvent and mobile carrier,liquid membrane was acquired of function,performing the facilitated mass transfer across the diffusive solvent,so as for the separation and delivery achievement with efficacy.In this review,two types of liquid membrane are mainly focused,respectively on supported liquid membrane(SLM)of membrane solvent supporter in necessity,and on emulsion liquid membrane(ELM)of the required interfacial stabilizers and homogenization.Accordingly,the transfer mechanism,compositions,structure and features of SLM and ELM are introduced respectively.Moreover,the current investigations of liquid membrane have been discussed,focusing on the improvements of efficacy and stability in separation&detection,encapsulation and delivery,so as to scale up the favorable and efficient application with bio-life concern.Prospectively,this review could provide comprehensive insight into the bio-applications of liquid membrane,and guidelines for the further investigations on the efficacy and long-term applicable stability,in order to realize the industrialization.
文摘Based on the study of supply chain(SC) and SC optimization in engineering projects, a mixed integer nonlinear programming(MINLP) optimization model is developed to minimize the total SC cost for international petrochemical engineering projects. A steam cracking project is selected and analyzed, from which typical SC characteristics in international engineering projects in the area of petrochemical industry are summarized. The MINLP model is therefore developed and applied to projects with detailed data. The optimization results are analyzed and compared by the MINLP model, indicating that they are appropriate to SC management practice in engineering projects, and are consistent with the optimal priceeffective strategy in procurement. As a result, the model could provide useful guidance to SC optimization of international engineering projects in petrochemical industry, and improve SC management by selecting more reliable and qualified partner enterprises in SC for the project.
文摘Biochemical Engineering(BCE)discipline had largely developed from fermentation technology studies from 1950s through 1960s when fermentation emerged as the core technology able to address multiple industrial needs ranging from health care products such as antibiotics;food products such as single cell proteins,amino acids,organic acids,and vitamins;liquid fuels and chemicals such as ethanol and acetic acid;and industrial enzymes.
文摘Increasing importance of heat transfer in chemical engineering science causes that investigation in the field of enhancement techniques is always one of the up-to-date topics for study.In the current comparative analysis,the thermal enhancement and friction penalty are explored numerically for curved tubes via twisted configuration.To accomplish this,three common geometries namely helical,serpentine,and Archimedes spiral,are considered at different coil-pitches and twist-pitches as well as five Reynolds numbers in the laminar flow regime.The results exhibit noticeable enhancements(up to 60%)in the thermal performance of the twisted cases as compared to the smooth cases.The highest increases are recorded for the serpentine case,followed by the helical and spiral cases.It is found that these enhancements vary via coil-pitch and twist-pitch.Increasing coil-pitch and twist-pitch augments both heat transfer coefficient and pressure drop in all curved-twisted tubes,however,the effects of twist-pitch are more pronounced.To predict Nusselt number and friction factor,new correlations are also proposed.The maximum deviations of the predicted results compared to the simulated data are within±5%.
文摘Under the background of the continuous combination of science and technology and modern production, the national macro requirements for enterprise construction have been adjusted and changed more obviously than in the past. It is not simply based on quantitative production, but more emphasis on the upgrading and progress of technology. This change also provides new ideas and ways for enterprise innovation. As an important basis for leading the development trend of the times, chemical enterprises should also receive more attention and attention in this case, especially in terms of chemical design, we should especially emphasize the significance of the application of computer software technology.
