文献类型：期刊文献

中文题名：无水氨基酸类离子液体-聚乙二醇混合溶剂吸收CO2的动力学

英文题名：CO_2 absorption kinetic study based on non-aqueous mixed solvent system of amino acid ionic liquids with polyethylene glycol as solvent

作者：李骏[1,2];何文军[1];宗弘元[1];漆志文[2];杨为民[1]

机构：[1]中国石化上海石油化工研究院,绿色化工与工业催化国家重点实验室,上海201208;[2]华东理工大学化工学院,化学工程联合国家重点实验室,上海200237

年份：2018

卷号：37

期号：2

起止页码：789

中文期刊名：化工进展

外文期刊名：Chemical Industry and Engineering Progress

收录：CSTPCD;;EI(收录号：20183705799608);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

语种：中文

中文关键词：离子液体;二氧化碳;聚乙二醇;吸收;动力学

外文关键词：ionic liquid;carbon dioxide;polyethylene glycol;absorption;kinetics

摘要：以聚乙二醇400(PEG400)为溶剂,氨基酸类离子液体(AAILs)作为化学吸收剂的混合体系具有蒸汽压极低、热稳定性好、黏度和再生能耗低、CO_2吸收量和选择性高等优点,适用于燃烧前CO_2捕集过程的高温高压吸收条件。本文采用压降法,测定了以四正丁基膦([P4444]+)为阳离子,甘氨酸(Gly)、丙氨酸(Ala)和脯氨酸(Pro)作为阴离子的3种氨基酸类离子液体的混合溶剂体系对CO_2的吸收速率,并建立了该无水体系的CO_2吸收动力学模型。对于反应速率而言,在333.15K时,[P4444][Gly]-PEG400>[P4444][Pro]-PEG400>[P4444][Ala]-PEG400,温度升高至373.15K时,[P4444][Pro]-PEG400>[P4444][Gly]-PEG400>[P4444][Ala]-PEG400;根据相关吸收动力学参数,推测出CO_2在AAILs-PEG400中的反应均为快反应。通过研究其吸收动力学,获得了关键的吸收动力学数据,为后续的工业开发设计提供基础数据和设计依据。
Abatract： The non-aqueous mixed solvent system based on amino acid ionic liquids（AAILs）and polyethylene glycol 400（PEG400）shows many advantages,such as extremely low vapor pressure,good thermal stability,low viscosity and regeneration energy,high CO_2 capacity and selectivity,which is suitable for the pre-combustion process facing high absorption temperature and pressure conditions. The CO_2 absorption rates for three kinds of AAILs with tetrabutylphosphonium（[P4444]＋） as cation,glycine（Gly）,alanine（Ala）,proline（Pro）as anions in PEG400 were determined by pressure drop method,and then the relevant absorption kinetic model was developed. The absorption rate were ranked as [P4444][Gly]-PEG400 [P4444][Pro]-PEG400 [P4444][Ala]-PEG400 at 333.15 K and [P4444][Pro]-PEG400 [P4444][Gly]-PEG400 [P4444][Ala]-PEG400 at 373.15 K. According to the absorption kinetic results,the CO_2 absorption by AAIL-PEG400 system was fast reaction. Based on the absorption model,the key kinetic parameters were obtained,providing the basic data and principle of design for the coming industrial development and process design.