Oxidation of amines at absorber conditions for CO2 capture from flue gas

被引：29
作者：
Voice, Alexander K. [1 ]
Rochelle, Gary T. [1 ]
机构：
[1] Univ Texas Austin, Dept Chem Engn, Luminant Carbon Management Program, Austin, TX 78712 USA
来源：
10TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES | 2011年 / 4卷
关键词：
Oxidative degradation; amine screening; ammonia rates; activation energy;
D O I：
10.1016/j.egypro.2011.01.038
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Eleven amines that are suitable for CO2 capture by an amine scrubbing system have been evaluated for their stability in the presence of oxygen. Six amines produced measureable quantities of ammonia in the order: 1,2-diamino-propane (DAP) > monoethanolamine (MEA) > ethylene diamine (EDA) > 3-methylamino-1-propylamine (MAPA) > potassium glycinate (GLY) > potassium taurinate (TAU). Five other amines produced no detectable ammonia (<0.2mmol/kg/hr): piperazine (PZ), 1-methyl-piperazine (1-MPZ), diglycolamine (DGA (R)), 2-amino-2-methyl-propanol (AMP), and 1-methyl- diethanolamine (MDEA). The effect of temperature on ammonia production from aqueous MEA in the presence of Inh. A was also measured. The activation energy of ammonia production varied from 86 kJ/mol with no inhibitor to 133 kJ/mol with 200 mM Inh. A. At 55 degrees C, ammonia production was reduced by 74-99% with 50-200 mM Inh. A. (C) 2011 Published by Elsevier Ltd.
引用
收藏
页码：171 / 178
页数：8
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