
第46卷第3期
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
MEA-PEHA复合溶液吸收/解吸CO气体实验研究
曹伟1.2曲燕:陆诗建1-2
1.中国石油大学(华东)2.中石化节能环保工程科技有限公司
摘要为了开发性能优良的MEA/筛胺复配吸收剂,本研究采用自主设计的COz捕集吸收/解吸装置,通过测试烯胺及MEA/烯胺复配吸收制的吸收速率、吸收量、解吸速率、解吸率等指标确定最佳单组分烯胺溶剂及其与MEA的最佳复配溶剂。研究结果表明,单溶剂中五乙烯六胺(PEHA)的吸收和解吸效果最好,解吸温度最低,是最佳的单组分烯胺吸收剂;不同物质的量浓度比(4:6~9:1)的 MEA-PEHA复配溶液中,物质的量浓度配比为5:5的MEA-PEHA复配溶液饱和吸收量最大(1.72 mol),平均吸收速率最高(81.74X10-§mol/s),解吸温度最低(68℃),平均解吸速率最大(137.09× 10-°mol/s)以及解吸率较高(95.23%),是CO,捕集的最佳MEA-PEHA混胺体系。
关键词CO,捕集MEA-PEHA复配溶液吸收解吸烯胺
中图分类号:TE644;TQ413
文献标志码:A
DOI:10.3969/j.issn.1007-3426.2017.03.002
ExperimentalresearchonCOgasabsorptionanddesorption
characteristics by MEA-PEHA composite solution
Cao Wei', Qu Yan',Lu Shijian-
1.China Uniuersity of Petroleum(East Ching),Qingdao,Shandong,Chind;
2.Sinopec Energy and Enuirunmental Engineering Co., Ltd, Dongying, Shandong, Chine
Abstract: To develop an excellent MEA and enamine mixed solution, employed the self-designed CO, absorption and desorption device, the absorption rate, absorption capacity, desorption rate, etc, were tested to evaluate the best enamine solvent and the mixed solvent with MEA, Research results showed that PEHA was the best enamine solvent which has the best absorption and desorption properties and the lowest desorption temperature. In different molar concentration ratios (4 : 6-9 : 1) of MEA-PEHA mixed solution, the mixed solution of 5 : 5 molar concentration ratio was the best MEA-PEHA mixed solution, because it had the maximum saturated absorption capacity (1. 72 mol), the highest average absorption rate (81.74 X 10- mol/s), the lowest desorption temperature(68 C), the maximum average desorption rate (137. 09X10 mol/s) and higher desorption capacity(95.23%).
Key words: CO, capture, MEA-PEHA composite solution, absorption, desorption, enamine
电厂、炼化行业大量CO,气体的排放加剧全球变暖,引发世界范围对CO,气体减排及利用技术的研究[1-2:。与常规的注水驱油相比,CO,驱油通过往油
田里注入CO:改变原油的特性,可以提高原油采收率(约10%~15%)及全球的油产量(约50%))。CO 驱油技术的关键是CO,气体的分离和捕集。当前
基金项目:国家科技支撑计划课题大规模燃煤电厂烟气CO:捕集、驱油、封存技术开发及应用示范"(2012BAC24B05)。作者简介:曹伟(1991一),男,安徽马鞍山人,主要从事CCUS工程技术的研究。E-mail;271172198@qq.com
通信作者:曲燕(1980一),女,山东济南人,博士,副教授,主要从事强化传热与节能技术的研究。E-mail:yanqu@upc.edu.cn 万方数据