共查询到19条相似文献,搜索用时 375 毫秒
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气-液-固加氢反应器在精细化工中有广泛的应用,本文介绍了气-液-固加氢反应器的混合和操作,并为气-液-固加氢反应器的设计和选择提出-些参考. 相似文献
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简要介绍针对焦炉气制甲醇过程中焦炉气利用率较低的生产现状,提出了焦炉气制甲醇装置补充二氧化碳的方法,以优化焦炉气成份,达到提高焦炉气利用率的目的。 相似文献
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对苯硝化-高温氯化法间二氯苯和苯定向氯化-吸附分离法间二氯苯生产中的原子利用率,"三废"的产生量、治理难易程度和治理成本等进行了比较,结果表明:苯定向氯化-吸附分离法间二氯苯的原子利用率高,废渣量比苯硝化-高温氯化工艺减少98%,单位产品污染物治理成本占产值比例的2.9%~3.5%(苯硝化-高温氯化法占30%~37%)... 相似文献
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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, /Route, is proposed to determine the suitability of a chemical route in this paper. /Route 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. 相似文献
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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. 相似文献
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Weihan WANG Jing Lü Li ZHANG Zhenhua LI 《Frontiers of Chemical Science and Engineering》2011,5(3):349-354
Green chemistry has attracted more attention in the past century. Among the 12 principles of green chemistry, only atom economy and E factor can be expressed quantitatively to depict the impact of a chemical process to environment. Atom economy was thought better than the traditional yield for evaluating the atom efficiency of raw materials. But it is not enough to reflect the conversion degree of raw material. In this paper, we proposed the concept of real atom economy (RAE) as a metric. RAE could combine the above two factors together to better express the green degree of a process. We further suggested an equation to correlate E factor with RAE. The concept of RAE is proved to be helpful for estimating an environmentally benign process. 相似文献
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关于有机化学反应中的原子经济性探讨 总被引:1,自引:0,他引:1
探索具有原子经济性的反应是绿色化学的重要研究内容,是当今合成策略的一个重要组成部分。通过有机化学反应中重排反应、加成反应和异构化反应等对原子经济性进行了探讨 相似文献
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原子经济将促进化工高新技术发展 总被引:2,自引:0,他引:2
通过对原子经济性的分析,深刻阐述了原子经济在促进催化技术、生物工程技术、生命科学技术、电合成技术、超临界流体技术、有机合成技术(不对称诱导合成等)和产物分离及过程控制等相关化工高新技术发展,以及在推动可持续发展战略过程中的重要作用。 相似文献
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高雅荣 《陶瓷研究与职业教育》2006,4(4):25-27
绿色化学是指化学反应和过程以“原子经济性“为基本原则,即在获取新物质的化学反应中充分利用参与反应的每个原料原子,实现“零排放“.绿色化学是一门从源头上阻止污染的化学. 相似文献