1) extraction and fractionation
萃馏
1.
Progresses in extraction and fractionation of natural vitamin E by supercritical carbon dioxide (1980～2002);
超临界CO_2萃馏浓缩天然V_E的国内外研究现状(1980～2002)
2) extraction distillation
萃取精馏
1.
A kind of optimal extraction agent is determined for extraction distillation of propane-propene process,based on the simulation results by the ASPEN PLUS software.
借助ASPEN PLUS软件,对丙烷?丙烯体系萃取精馏过程所用的溶剂进行了筛选,得到一种最佳的萃取剂。
2.
The emphasis of the review is put on the practical,environmental,economical and new technologies such as extraction distillation plus adsorption,extraction distillation plus reactive distillation and extracti.
结合作者的研究工作,概述了噻吩及其衍生物的应用前景,着重综述了实用性强、环保、经济可行的萃取精馏+吸附;萃取精馏+反应精馏;萃取精馏+离子液体络合萃取等新型组合工艺,对合理利用噻吩资源,减少焦化苯精制中的环境污染等具有十分重要的意义。
3.
method of separation for ethanol and water was simply discussed,Technology of extraction dis-tillation separation for ethanol and water was designed,separation results of which were modelled bycomputer,and extraction distillation experiment with ethylene glycol was researched.
简要介绍了乙醇和水分离的方法，设计了蒸馏和萃取精馏相结合分离乙醇和水的工艺，并模拟该工艺的分离结果，以乙二醇为萃取剂进行了萃取精馏试验，结果表明以乙二醇为溶剂萃取分离乙醇和水，分离后乙醇的质量含量可提高到９９。
4) extraction and fractionation
萃取分馏
1.
Supercritical fluid extraction and fractionation (SFEF) are used to separate Daqing and Liaohe decanted oils into a number of narrow fractions.
以大庆和辽河油浆为研究对象 ,采用超临界流体萃取分馏技术将其切割成窄馏分 ,分析了油浆窄馏分的性质及组成随收率变化的规律。
5) extractive distillation
萃取蒸馏
1.
The processes and technical characteristics of producing butadiene using three different kinds of solvents by extractive distillation were reviewed in which solvents were acetonitrile,N,N'-dimethylformamide,methyl pyrrolidinone.
综述了用3种不同溶剂通过萃取蒸馏方法生产丁二烯产品的工艺流程及工艺特点,其中包括乙腈(ACN)法、二甲基甲酰胺(DMF)法和N-甲基吡咯烷酮(NMP)法；并介绍了UOP和BASF公司共同开发的炔烃选择加氢(KLP)与丁二烯抽提蒸馏联合工艺及一种抽提工艺改进技术,即分壁式技术。
2.
Six extractive distillation solvents and four polymerization inhibitors for recovering styrene from pyrolysis gasoline were evaluated in the laboratory.
对萃取蒸馏分离苯乙烯可能的 6种溶剂和 4种阻聚剂进行了实验室评价。
3.
A simulation calculation for the separation of 5 carbon stream by extractive distillation with DMF (N,N-dimethylformamide) solvent was made.
利用流程模拟软件对DMF（N，N-二甲基甲酰胺）法萃取蒸馏分离C5的工艺进行了计算，根据计算的结果，提出了一种改进的流程，并进行了计算，结果表明用精馏塔代替第二萃取塔是可行的。
6) Fractional extraction
分馏萃取
1.
The optimumoperation conditions for fractional extraction of iron from the liquor containing numerous metalliccomponents and for backextracion of charged organic phase were determined.
研究结果表明，以P507为萃取剂、硫酸为洗涤剂，经3级萃取、2级洗涤的分馏萃取后，可以从含有多种金属组分的硫酸溶液中分离出99。
补充资料：萃萃
1.聚积貌。 2.崒崒。巍巍高大貌。萃，通"崒"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条