DETA-MDEA复合溶液吸收与解吸CO_2实验研究
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摘要
以烯胺吸收剂DETA(二乙烯三胺)为主吸收剂与辅助吸收剂MDEA(N-甲基二乙醇胺)按摩尔配比20:1～20:6进行复配,通过一次循环吸收、解吸实验,对比其在313 K温度下的吸收量、吸收速率以及393 K温度下的再生速率、再生量以及它们的降解率。以筛选出较好的20:4DETA+MDEA烯胺复配药剂为基础,进行6次循环吸收-解吸实验,考察循环吸收、解吸性能与胺降解率;以智能高压反应釜分别考察了20:4DETA+MDEA降解性能,对CO_2负载、温度、铁离子的降解性能的影响进行了探讨。
DETA-MDEA complex solution was papered by using DETA as main absorbent and MDEA as auxiliary absorbent whose molar ratio was 20:1～20:6. The absorption and absorption rate at 313 K and regeneration rate and degradation rate at 393 K were compared through one cycle absorption and desorption experiments.20:4 DETA+MDEA enamine compound was screened out, six cyclic absorption-desorption experiments were carried out to investigate the cyclic absorption, desorption performance and amine degradation rate. The degradation performance of20:4 DETA+MDEA was investigated in an intelligent autoclave, and the effect of carbon dioxide loading, temperature and iron ions on the degradation performance was discussed.
DETA-MDEA complex solution was papered by using DETA as main absorbent and MDEA as auxiliary absorbent whose molar ratio was 20:1～20:6. The absorption and absorption rate at 313 K and regeneration rate and degradation rate at 393 K were compared through one cycle absorption and desorption experiments.20:4 DETA+MDEA enamine compound was screened out, six cyclic absorption-desorption experiments were carried out to investigate the cyclic absorption, desorption performance and amine degradation rate. The degradation performance of20:4 DETA+MDEA was investigated in an intelligent autoclave, and the effect of carbon dioxide loading, temperature and iron ions on the degradation performance was discussed.
引文
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[2]王众.中国二氧化碳捕捉与封存(CCS)早期实施方案构建及评价研究[J].气体净化,2013(2):24-25.
[3]刘嘉,李永,刘德顺.碳封存技术的现状及在中国应用的研究意义[J].环境与可持续发展,2009,34(2):33-35.
[4]祁艳君.碳捕集系统在火电厂中的最优配置研究[D].燕山大学,2011.
[5]徐婷,杨震,周体尧,等.中美二氧化碳捕集和驱油发展状况分析[J].国际石油经济,2016,24(4):12-16.
[6]陆诗建,黄凤敏,李清方,等.燃烧后CO2捕集技术与工程进展[J].现代化工,2015(6):35-39.
[7]晏水平,方梦祥,张卫风,骆仲泱,岑可法.烟气中CO2化学吸收法脱除技术分析与进展[J].化工进展,2006,25(9):1018.
[8]Rao A.,Rubin E..A technical,economic,and environmental assessment of amine based CO2 capture technology for power plant greenhouse gas control[J].Environmental Science Technology,2002,36:4467-4475.
[9]Rochelle GT.Amine Scrubbing for CO2Capture[J].Science.2009(325):1652-1654
[10]Freeman,S.A.,Davis,J.,Rochelle,G.T.Degradation of aqueous piperazine incarbon dioxide capture[J].Green Gas Control,2010,4:756-761.
[11]Liu D,Zeng X W,Luo X G.Experimental research of absorbing carbon dioxide form flue gas by MEA-DETA mixed amine solutions[J].Chemistry&Bioengineering,2010.
[12]Srikanth C S,Chuang S S C.Spectroscopic Investigation into Oxidative Degradation of Silica-Supported Amine Sorbents for CO2Capture[J].Chemsuschem,2012,5(8):1435-1442.
[13]项菲.烯胺DETA/DETA溶液富集烟道气中CO2的研究[D].浙江大学,2003.
[14]陆诗建,李清方,张建,等.烯胺溶液吸收和解吸模拟烟气中二氧化碳实验研究[J].应用化工,2009,38(9):1245-1248.
[15]Gary T Rochelle.Thermal degradation of amines for CO2 capture[J].Current Opinion in Chemical Engineering,2012,1:183-190.
[16]张京亮,赵杉林,赵荣祥,等.现代二氧化碳吸收工艺研究[J].当代化工,2011,40(1):88-91.
[17]王明坛,谢圣林,许子通.二氧化碳捕集技术的现状与最新进展[J].当代化工,2016,45(5):1002-1005.