基于中空纤维膜接触器的混合胺吸收剂脱除烟气中CO2  

Removal of CO2 from flue gas by mixed absorbent based on hollow fiber membrane contactor

作　　者：马伟春 MA Wei-chun(College of Equipment Management and Security,Engineering University of PAP,Xi’an 710086,China)

机构地区：[1]中国人民武装警察部队工程大学装备管理与保障学院,陕西西安710086

出　　处：《应用化工》2021年第1期61-64,69,共5页Applied Chemical Industry

基　　金：国家重点研发计划资助项目(2016YFC0209300)。

摘　　要：在聚丙烯(PP)中空纤维膜接触器试验平台上,利用MDEA-PG、MDEA-PZ和MDEA-MEA三种混合胺吸收剂对模拟烟气进行脱碳处理,结果表明,三种混合胺吸收剂的CO2膜吸收性能高低依次为:MDEA-MEA>MDEA-PG>MDEA-PZ。相比质量浓度为35%,混合胺吸收剂在质量浓度为20%时的CO2吸收性能增速更为显著,混合胺吸收液的合理质量浓度范围为20%~35%;同一浓度下,MDEA-MEA、MDEA-PG和MDEA-PZ在溶质配比为1∶0.8时的CO2脱除率最高,依次为45.05%,38.84%和32.95%;MDEA-MEA、MDEA-PG和MDEA-PZ混合胺吸收剂在质量浓度为30%(溶质配比1∶0.8)时最经济可行。On the PP(polypropylene)hollow fiber membrane contactor test platform,three mixed amine absorbents of MDEA-PG,MDEA-PZ and MDEA-MEA were used to decarburize simulated flue gas.The results showed that:three mixed absorption the order of its CO2 absorption performance was:MDEA-MEA>MDEA-PG>MDEA-PZ.Compared the concentration was 35%,the mixed absorbent with additives added at a concentration of 20%had a more significant increase in CO2 absorption performance.It is recommended that the mixed absorbent reasonable concentration range is 20%~35%;MDEA-MEA,MDEA-PG and MDEA-PZ have the highest CO2 removal rate when the solute ratio was 1∶0.8,which were 45.05%,38.84%and 32.95%respectively;the optimization test showed,MDEA-MEA,MDEA-PG and MDEA-PZ mixed absorbents were the most economical and feasible when the concentration was 30%(solute ratio 1∶0.8).

关 键 词：二氧化碳 混合胺吸收剂 中空纤维膜 脱除率 

分 类 号：TQ511[化学工程] X701.5[环境科学与工程—环境工程]