为实现餐饮废弃油料的高效转化利用,本文采用Aspen Plus V14模拟软件,设计了一套年产7万吨生物柴油的生产工艺流程。本工艺流程以甘油三酯为主要成分的餐饮废弃油料为原料,基于NaOH催化的碱催化酯交换反应制备生物柴油,并通过工艺参数...为实现餐饮废弃油料的高效转化利用,本文采用Aspen Plus V14模拟软件,设计了一套年产7万吨生物柴油的生产工艺流程。本工艺流程以甘油三酯为主要成分的餐饮废弃油料为原料,基于NaOH催化的碱催化酯交换反应制备生物柴油,并通过工艺参数优化提升产品收率与能源利用效率。模拟结果显示,该工艺可使生物柴油质量分数达到99.48%,副产甘油纯度为100%,甲醇回收率约91.86%;经工艺与热能集成优化后,冷、热公用工程能耗分别降低37.15%和37.06%,年节能量达5543.8kW。研究表明,优化后的工艺可实现生物柴油的高效精制,年产量满足7万吨设计要求,且产品理化指标符合《B5柴油》(GB/T 25199—2017)标准,为餐饮废弃油料制备生物柴油提供了可行的工艺方案与技术参考。展开更多
The production of medical waste(MW)is a growing concern,particularly in light of the increasing annual generation and the exacerbating effects of the COVID-19 pandemic.Traditional techniques such as incineration and l...The production of medical waste(MW)is a growing concern,particularly in light of the increasing annual generation and the exacerbating effects of the COVID-19 pandemic.Traditional techniques such as incineration and landfilling present significant limitations.In this study,a self-designed 50 kW arc plasma reactor was employed to conduct gasification experiments on nitrile-butadiene rubber(NBR)which served as a model of MWand a mixture of NBR/SiO_(2) which served as a model of glass-containing MW,using CO_(2)as the working gas.The CO_(2)thermal plasma gasification process not only ensures the safe and efficient disposal of MW,but also facilitates its effective conversion into H_(2)and CO,achieving a carbon conversion efficiency of 94.52%.The yields of H2 and CO reached 98.52%and 81.83%,respectively,and the specific energy consumption was as low as 3.55 kW·h·kg^(-1).Furthermore,the addition of SiO_(2) was found to inhibit the gasification of NBR and cause damage to the reactor.Therefore,it is recommended that glass waste should be removed prior to the treatment of MW.The CO_(2)thermal plasma gasification technology can not only eliminate environmental and health risks posed by MW,but also convert it into syngas for further utilization.This provides a promising approach to the harmless and resource disposal of MW,while also contributing to the comprehensive utilization of greenhouse gases.展开更多
文摘为实现餐饮废弃油料的高效转化利用,本文采用Aspen Plus V14模拟软件,设计了一套年产7万吨生物柴油的生产工艺流程。本工艺流程以甘油三酯为主要成分的餐饮废弃油料为原料,基于NaOH催化的碱催化酯交换反应制备生物柴油,并通过工艺参数优化提升产品收率与能源利用效率。模拟结果显示,该工艺可使生物柴油质量分数达到99.48%,副产甘油纯度为100%,甲醇回收率约91.86%;经工艺与热能集成优化后,冷、热公用工程能耗分别降低37.15%和37.06%,年节能量达5543.8kW。研究表明,优化后的工艺可实现生物柴油的高效精制,年产量满足7万吨设计要求,且产品理化指标符合《B5柴油》(GB/T 25199—2017)标准,为餐饮废弃油料制备生物柴油提供了可行的工艺方案与技术参考。
基金supported by the National Key Research and Development Program of China(2016YFB0301800)the National High Technology Research and Development Program of China(2015AA020201).
文摘The production of medical waste(MW)is a growing concern,particularly in light of the increasing annual generation and the exacerbating effects of the COVID-19 pandemic.Traditional techniques such as incineration and landfilling present significant limitations.In this study,a self-designed 50 kW arc plasma reactor was employed to conduct gasification experiments on nitrile-butadiene rubber(NBR)which served as a model of MWand a mixture of NBR/SiO_(2) which served as a model of glass-containing MW,using CO_(2)as the working gas.The CO_(2)thermal plasma gasification process not only ensures the safe and efficient disposal of MW,but also facilitates its effective conversion into H_(2)and CO,achieving a carbon conversion efficiency of 94.52%.The yields of H2 and CO reached 98.52%and 81.83%,respectively,and the specific energy consumption was as low as 3.55 kW·h·kg^(-1).Furthermore,the addition of SiO_(2) was found to inhibit the gasification of NBR and cause damage to the reactor.Therefore,it is recommended that glass waste should be removed prior to the treatment of MW.The CO_(2)thermal plasma gasification technology can not only eliminate environmental and health risks posed by MW,but also convert it into syngas for further utilization.This provides a promising approach to the harmless and resource disposal of MW,while also contributing to the comprehensive utilization of greenhouse gases.
