In 2024,China’s natural gas industry continues to show a positive trend.In the field of exploration and development,a large ultra-deep water and ultra-shallow gas field has been discovered,further enhancing the uniqu...In 2024,China’s natural gas industry continues to show a positive trend.In the field of exploration and development,a large ultra-deep water and ultra-shallow gas field has been discovered,further enhancing the unique deep-water complex oil and gas exploration and development technology system independently developed by China.Remarkable achievements have been made in offshore development,including the commissioning of Deep Sea No.1 PhaseⅡ,the first deep-water high-pressure gas field.Additionally,the establishment of the Daji gas field,the first onshore coal rock gas field with an oil and gas equivalent of one million tons,provides strong support for domestic natural gas production.In terms of infrastructure construction,the entire China-Russia east-route natural gas pipeline has been completed,the Xinjiang section of the West Fourth Line is now operational,the Southern Xinjiang Gas Pipeline project has been fully launched,and five new or expanded LNG receiving terminals have been added,increasing the annual receiving capacity by 21.10 million tons.In the field of related equipment manufacturing,China successfully delivered the first vessel of its largest LNG transportation ship construction project,the Greenergy Ocean,and successfully launched its first large-scale floating natural gas liquefaction facility,the NGUYA FLNG.In terms of market supply and demand,natural gas consumption exceeded 400 billion m^(3) for the first time,with apparent consumption reaching 412.43 billion m^(3),an increase of 24.9 billion m^(3) year-on-year,reflecting a growth rate of 6.4%.The total supply reached 424.3 billion m^(3),an increase of 27.5 billion m^(3) year-on-year,with a growth rate of 7.5%.In terms of regulatory policy,China has once again issued a natural gas utilization policy aimed at further guiding the orderly and efficient development of the natural gas market.展开更多
Low-temperature NO decomposition with high efficiency and low energy consumption remains a huge challenge.Herein,we reported a novel adsorption-microwave catalytic decomposition method for the deep removal of NO using...Low-temperature NO decomposition with high efficiency and low energy consumption remains a huge challenge.Herein,we reported a novel adsorption-microwave catalytic decomposition method for the deep removal of NO using NaY-MgCo_(2)O_(4)-40%BaCO_(3) as the bi-functional adsorbent/catalyst material under complex flue gas.At room temperature,under the condition of excess O_(2),NO was first adsorbed on the bi-functional material for concentration,and then the adsorbed NO was quickly decomposed into N_(2) and O_(2)by microwave(MW)catalysis at a low temperature of 250℃.It was found that the conversion of adsorbed NO reached 99.5%after only 15 min of microwave irradiation.NaY-MgCo_(2)O_(4)-40%BaCO_(3) had excellent recyclability with a high NO removal rate of 98.2%in the 4-cycles’operation.Moreover,the application of the adsorption-microwave catalytic decomposition method for denitrification under complex flue gas(the presence of SO_(2)or CO_(2))was studied for the first time,and NaY-MgCo_(2)O_(4)-40%BaCO_(3) showed superior resistance to SO_(2)and CO_(2).This work provides a new and attractive approach for the deep removal of NOx at low temperature without adding an additional reducing agent,and it is green,efficient and energy-saving.展开更多
Based on three-dimensional seismic interpretation, structural and sedimentary feature analysis, and examination of fluid properties and production dynamics, the regularity and main controlling factors of hydrocarbon a...Based on three-dimensional seismic interpretation, structural and sedimentary feature analysis, and examination of fluid properties and production dynamics, the regularity and main controlling factors of hydrocarbon accumulation in the Tazhong uplift, Tarim Basin are investigated. The results show that the oil and gas in the Tazhong uplift has the characteristics of complex accumulation mainly controlled by faults, and more than 80% of the oil and gas reserves are enriched along fault zones. There are large thrust and strike-slip faults in the Tazhong uplift, and the coupling relationship between the formation and evolution of the faults and accumulation determine the difference in complex oil and gas accumulations. The active scale and stage of faults determine the fullness of the traps and the balance of the phase, that is, the blocking of the transport system, the insufficient filling of oil and gas, and the unsteady state of fluid accumulation are dependent on the faults. The multi-period tectonic sedimentary evolution controls the differences of trap conditions in the fault zones, and the multi-phase hydrocarbon migration and accumulation causes the differences of fluid distribution in the fault zones. The theory of differential oil and gas accumulation controlled by fault is the key to the overall evaluation, three-dimensional development and discovery of new reserves in the Tazhong uplift.展开更多
A new complex, [Cu（HL）（phen）（H2O）]·4H2O（1, H3L·HCl = 5-（（4-carboxypiperidin-1-yl）methyl）isophthalic acid hydrochloride, phen = 1,10-phenanthroline）, has been hydrothermally prepared and character...A new complex, [Cu（HL）（phen）（H2O）]·4H2O（1, H3L·HCl = 5-（（4-carboxypiperidin-1-yl）methyl）isophthalic acid hydrochloride, phen = 1,10-phenanthroline）, has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in monoclinic, space group P21/c with a = 14.5520（14）, b = 12.6659（12）, c = 15.5006（14） A, β = 97.224（2）o, V = 2834.3（5） A3, Z = 4, C27H33N3O11 Cu, Mr = 639.10, Dc = 1.498 g/cm3, μ = 0.837 mm-1, S = 1.047, F（000） = 1332, the final R = 0.0423 and w R = 0.1118 for 18772 observed reflections（I 〉 2σ（I））. The compound is a Cu（Ⅱ） centre mononuclear molecule in the asymmetric unit. The independent binuclear [Cu2（HL）2（phen）2] units are bridged to form a three-dimensional（3D） supramolecular polymer by extensive hydrogen bonds and π-π non-covalent bonding interactions. Moreover, thermogravimetric（TG） analysis and gas adsorption property of 1 were also discussed.展开更多
In this review, we summarize our recent results on matrix isolation infrared spectroscopic studies and theoretical investigations of noble gas-transition metal oxide complexes. The results show that some transition me...In this review, we summarize our recent results on matrix isolation infrared spectroscopic studies and theoretical investigations of noble gas-transition metal oxide complexes. The results show that some transition metal oxide species trapped in solid noble gas matrices are chemically coordinated by one or multiple noble gas atoms forming noble gas complexes and, hence, cannot be regarded as isolated species. Noble gas coordination alters the vibrational frequencies as well as the geometric and electronic structures of transition metal oxide species trapped in solid noble gas matrixes. The interactions between noble gas atoms and transition metal oxides involve ion-induced dipole interactions as well as chemical bonding interactions. Periodic trends in the bonding in these noble gas-transition metal complexes are discussed.展开更多
Three different technologies for the low-temperature separation(LTS)of gas condensate from the Achimov deposits in the Russian Urengoyskoe gas and condensate field were assessed using exergy analyses.The options exami...Three different technologies for the low-temperature separation(LTS)of gas condensate from the Achimov deposits in the Russian Urengoyskoe gas and condensate field were assessed using exergy analyses.The options examined included turbo-expansion and ejection.Thermomechanical exergy values were calculated for material streams and exergy losses and efficiencies were estimated for dedicated equipment used in the LTS.The lowest exergy loss of 4221.2 kW was obtained using turboexpansion and electricity cogeneration.The carbon release associated with each scenario was calculated while considering different production rates,technological parameters and natural decreases in wellhead pressure.The integral carbon footprint after 40 years of LTS operation was estimated for all cases.A classical ejector-based LTS scheme was shown to produce 1200 t of CO_(2)emissions over 40 years of operation.This same scheme combined with a turboexpander and electricity generator produced 59%less CO_(2)in the same period.An expansion-cogeneration LTS scheme was found to be the most effective and ecologically friendly among the various options based on this analysis.展开更多
文摘In 2024,China’s natural gas industry continues to show a positive trend.In the field of exploration and development,a large ultra-deep water and ultra-shallow gas field has been discovered,further enhancing the unique deep-water complex oil and gas exploration and development technology system independently developed by China.Remarkable achievements have been made in offshore development,including the commissioning of Deep Sea No.1 PhaseⅡ,the first deep-water high-pressure gas field.Additionally,the establishment of the Daji gas field,the first onshore coal rock gas field with an oil and gas equivalent of one million tons,provides strong support for domestic natural gas production.In terms of infrastructure construction,the entire China-Russia east-route natural gas pipeline has been completed,the Xinjiang section of the West Fourth Line is now operational,the Southern Xinjiang Gas Pipeline project has been fully launched,and five new or expanded LNG receiving terminals have been added,increasing the annual receiving capacity by 21.10 million tons.In the field of related equipment manufacturing,China successfully delivered the first vessel of its largest LNG transportation ship construction project,the Greenergy Ocean,and successfully launched its first large-scale floating natural gas liquefaction facility,the NGUYA FLNG.In terms of market supply and demand,natural gas consumption exceeded 400 billion m^(3) for the first time,with apparent consumption reaching 412.43 billion m^(3),an increase of 24.9 billion m^(3) year-on-year,reflecting a growth rate of 6.4%.The total supply reached 424.3 billion m^(3),an increase of 27.5 billion m^(3) year-on-year,with a growth rate of 7.5%.In terms of regulatory policy,China has once again issued a natural gas utilization policy aimed at further guiding the orderly and efficient development of the natural gas market.
基金supported by the National Natural Science Foundation of China(No.22178295,21706225,21676227)the Research Foundation of Hunan Provincial Education Department(No.19B540)+2 种基金the Natural Science Foundation of Hunan Province(No.2020JJ4572,2021JJ30665)the Research Foundation of Zhongye Changtian International Engineering Co.,Ltd(No.2020JCYJ02)the Hunan Collaborative Innovation Center of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization.
文摘Low-temperature NO decomposition with high efficiency and low energy consumption remains a huge challenge.Herein,we reported a novel adsorption-microwave catalytic decomposition method for the deep removal of NO using NaY-MgCo_(2)O_(4)-40%BaCO_(3) as the bi-functional adsorbent/catalyst material under complex flue gas.At room temperature,under the condition of excess O_(2),NO was first adsorbed on the bi-functional material for concentration,and then the adsorbed NO was quickly decomposed into N_(2) and O_(2)by microwave(MW)catalysis at a low temperature of 250℃.It was found that the conversion of adsorbed NO reached 99.5%after only 15 min of microwave irradiation.NaY-MgCo_(2)O_(4)-40%BaCO_(3) had excellent recyclability with a high NO removal rate of 98.2%in the 4-cycles’operation.Moreover,the application of the adsorption-microwave catalytic decomposition method for denitrification under complex flue gas(the presence of SO_(2)or CO_(2))was studied for the first time,and NaY-MgCo_(2)O_(4)-40%BaCO_(3) showed superior resistance to SO_(2)and CO_(2).This work provides a new and attractive approach for the deep removal of NOx at low temperature without adding an additional reducing agent,and it is green,efficient and energy-saving.
基金Supported by the China Science and Technology Major Project(2017ZX05008-004-001,2017ZX05001-001)Chinese Academy of Sciences Strategic Pilot Project(XDA14010302)
文摘Based on three-dimensional seismic interpretation, structural and sedimentary feature analysis, and examination of fluid properties and production dynamics, the regularity and main controlling factors of hydrocarbon accumulation in the Tazhong uplift, Tarim Basin are investigated. The results show that the oil and gas in the Tazhong uplift has the characteristics of complex accumulation mainly controlled by faults, and more than 80% of the oil and gas reserves are enriched along fault zones. There are large thrust and strike-slip faults in the Tazhong uplift, and the coupling relationship between the formation and evolution of the faults and accumulation determine the difference in complex oil and gas accumulations. The active scale and stage of faults determine the fullness of the traps and the balance of the phase, that is, the blocking of the transport system, the insufficient filling of oil and gas, and the unsteady state of fluid accumulation are dependent on the faults. The multi-period tectonic sedimentary evolution controls the differences of trap conditions in the fault zones, and the multi-phase hydrocarbon migration and accumulation causes the differences of fluid distribution in the fault zones. The theory of differential oil and gas accumulation controlled by fault is the key to the overall evaluation, three-dimensional development and discovery of new reserves in the Tazhong uplift.
基金Supported by the National Natural Science Foundation of China(No.21171040)National Undergraduates Innovation Project(201510371010)
文摘A new complex, [Cu（HL）（phen）（H2O）]·4H2O（1, H3L·HCl = 5-（（4-carboxypiperidin-1-yl）methyl）isophthalic acid hydrochloride, phen = 1,10-phenanthroline）, has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in monoclinic, space group P21/c with a = 14.5520（14）, b = 12.6659（12）, c = 15.5006（14） A, β = 97.224（2）o, V = 2834.3（5） A3, Z = 4, C27H33N3O11 Cu, Mr = 639.10, Dc = 1.498 g/cm3, μ = 0.837 mm-1, S = 1.047, F（000） = 1332, the final R = 0.0423 and w R = 0.1118 for 18772 observed reflections（I 〉 2σ（I））. The compound is a Cu（Ⅱ） centre mononuclear molecule in the asymmetric unit. The independent binuclear [Cu2（HL）2（phen）2] units are bridged to form a three-dimensional（3D） supramolecular polymer by extensive hydrogen bonds and π-π non-covalent bonding interactions. Moreover, thermogravimetric（TG） analysis and gas adsorption property of 1 were also discussed.
基金supported by the National Basic Research Program of China (Grant No. 2007CB815203)the National Natural Science Foundation of China (Grant Nos. 20773030 and 20803066)
文摘In this review, we summarize our recent results on matrix isolation infrared spectroscopic studies and theoretical investigations of noble gas-transition metal oxide complexes. The results show that some transition metal oxide species trapped in solid noble gas matrices are chemically coordinated by one or multiple noble gas atoms forming noble gas complexes and, hence, cannot be regarded as isolated species. Noble gas coordination alters the vibrational frequencies as well as the geometric and electronic structures of transition metal oxide species trapped in solid noble gas matrixes. The interactions between noble gas atoms and transition metal oxides involve ion-induced dipole interactions as well as chemical bonding interactions. Periodic trends in the bonding in these noble gas-transition metal complexes are discussed.
基金supported under the strategic academic leadership program‘Priority 20300 of the Russian Federation(Agreement 075-15-2021-1333 dated 30.09.2021).
文摘Three different technologies for the low-temperature separation(LTS)of gas condensate from the Achimov deposits in the Russian Urengoyskoe gas and condensate field were assessed using exergy analyses.The options examined included turbo-expansion and ejection.Thermomechanical exergy values were calculated for material streams and exergy losses and efficiencies were estimated for dedicated equipment used in the LTS.The lowest exergy loss of 4221.2 kW was obtained using turboexpansion and electricity cogeneration.The carbon release associated with each scenario was calculated while considering different production rates,technological parameters and natural decreases in wellhead pressure.The integral carbon footprint after 40 years of LTS operation was estimated for all cases.A classical ejector-based LTS scheme was shown to produce 1200 t of CO_(2)emissions over 40 years of operation.This same scheme combined with a turboexpander and electricity generator produced 59%less CO_(2)in the same period.An expansion-cogeneration LTS scheme was found to be the most effective and ecologically friendly among the various options based on this analysis.
