Tetra-n-butyl ammonium bromide semi-clathrate hydrate process for post-combustion capture of carbon dioxide in the presence of dodecyl trimethyl ammonium chloride
Tetra-n-butyl ammonium bromide semi-clathrate hydrate process for post-combustion capture of carbon dioxide in the presence of dodecyl trimethyl ammonium chloride
复制标题
四正丁基溴化铵半笼形水合物在十二烷基三甲基氯化铵存在下燃烧后捕集二氧化碳的方法
DOI：
10.1016/j.energy.2010.06.009
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发表时间：
2010-09-01
期刊：
影响因子：
9
通讯作者：
Wu, Hui-Jie
中科院分区：
文献类型：
--
作者：
Li, Xiao-Sen;Xu, Chun-Gang;Wu, Hui-Jie
研究了0.29mol%四丁基溴化铵(TBAB)水溶液中十二烷基三甲基氯化铵(DTAC)浓度和初始压力对水合物形成诱导时间和CO2分离效率的影响，确定了适宜的水合物生成分离操作条件。实验的温度范围为274.95 K~277.15 K，初始压力为0.66~2.66 Mpa，初始压力为0.056~0.056%。结果表明，当初始压力为1.66 Mpa时，初始压力为0.056%时，分离效果最好。在此条件下，两级水合物分离工艺可大大缩短水合物形成的诱导时间，并可将CO(2)从17.0摩尔%提纯到99.4%。阶段1和阶段2的CO(2)分离分数分别为0.54和0.39，分离因子分别为9.60和62.25。皇冠版权所有(C)2010由爱思唯尔有限公司出版。保留所有权利。
To determine the appropriate operating conditions for separating carbon dioxide from flue gas via the hydrate formation, the effects of the concentrations of dodecyl trimethyl ammonium chloride (DTAC) in 0.29 mol% Tetra-n-butyl ammonium bromide (TBAB) aqueous solution and the initial pressures on the induction time of the hydrate formation and CO(2) separation efficiency are investigated. The experiments are conducted at the DTAC concentration range of 0-0.056 mol%, initial pressures range of 0.66 MPa-2.66 MPa and temperature range of 274.95 K-277.15 K. The results indicate that the initial pressure of 1.66 MPa in conjunction with the concentration of 0.028 mol% DTAC is most favorable for CO(2) separation. At the condition, the induction time of forming the hydrate can be shortened considerably and CO(2) can be purified from 17.0 mol% to 99.4% with the two-stage hydrate separation process. CO(2) split fractions for Stage 1 and Stage 2 are 0.54 and 0.39, respectively, and the separation factors are 9.60 and 62.25, respectively. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.