环丁砜对乙醇胺溶液吸收和解吸CO2的影响

doi:10.11949/j.issn.0438-1157.20160999

化工学报 ›› 2016, Vol. 67 ›› Issue (12): 5244-5251.DOI: 10.11949/j.issn.0438-1157.20160999

环丁砜对乙醇胺溶液吸收和解吸CO₂的影响

郭东方¹, 郜时旺¹, 罗伟亮², 陈健²

1 中国华能集团清洁能源技术研究院有限公司, 北京 102209;
2 化学工程联合国家重点实验室, 清华大学化学工程系, 北京 100084

收稿日期:2016-07-14 修回日期:2016-08-25 出版日期:2016-12-05 发布日期:2016-12-05
通讯作者: 郭东方(1985-),男,博士,高级工程师。guodf03@163.com
基金资助:
华能集团清洁能源技术研究院研究与开发基金项目（TY-15-CERI04）。

Effect of sulfolane on CO₂ absorption and desorption by monoethanolamine aqueous solution

GUO Dongfang¹, GAO Shiwang¹, LUO Weiliang², CHEN Jian²

1 Huaneng Clean Energy Research Institute, Beijing 102209, China;
2 State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2016-07-14 Revised:2016-08-25 Online:2016-12-05 Published:2016-12-05
Supported by:
supported by Huaneng Clean Energy Research Institute Project(TY-15-CERI04).

摘要/Abstract

摘要：

利用物理溶剂环丁砜替代部分水，采用气液搅拌实验装置和真实热流量热法测定了环丁砜对乙醇胺（MEA）溶液吸收和解吸二氧化碳（CO₂）过程的影响，考察了CO₂循环负载、吸收速率、吸收热和解吸热等性质变化。研究表明：环丁砜对MEA溶液负载CO₂的吸收热影响较小，但对吸收速率、循环吸收容量和解吸过程影响较大。环丁砜可降低MEA溶液对CO₂的表观吸收速率，且随CO₂负载量的增大，降幅也逐渐变大。环丁砜有利于富液解吸过程，加快解吸速率，增大CO₂解吸程度，同时单位热流负荷、单位冷流负荷和单位能耗均有不同程度的降低。在燃煤电厂烟气条件下，20% MEA+20% sulfolane体系相对20% MEA体系，其表观吸收速率平均降低约10%，CO₂循环吸收容量增加24%，单位CO₂解吸能耗降低18%。

关键词: 环丁砜, 乙醇胺, CO₂, 吸收, 解吸

Abstract:

The effect of sulfolane on carbon dioxide(CO₂) absorption and desorption by monoethanolamine(MEA) aqueous solution was measured by gas-liquid stirring rig and true heat flow calorimeter, including CO₂ cyclic loading, absorption rate, heat of absorption and desorption. The experimental results show that sulfolane effect is significant for absorption rate, CO₂ cyclic loading and CO₂ desorption. In the condition of sulfolane addition, CO₂ absorption rate into MEA solutions decreases and the decreasing amplitude increases with CO₂ loading increase. Sulfolane can also accelerate desorption process and improve desorption level. Meanwhile, the heat duty, condensation duty and energy consumption are to some extent decreased. Under the condition of flue gas of coal-based power station and 20% sulfolane addition, the apparent CO₂ absorption rate averagely decreases 10%, CO₂ cyclic loading increases 24% and unit energy consumption for CO₂ desorption decreases 18% in comparison with 20% MEA solution.

Key words: sulfolane, monoethanolamine, carbon dioxide, absorption, desorption

中图分类号:

TQ028.2

郭东方, 郜时旺, 罗伟亮, 陈健. 环丁砜对乙醇胺溶液吸收和解吸CO₂的影响[J]. 化工学报, 2016, 67(12): 5244-5251.

GUO Dongfang, GAO Shiwang, LUO Weiliang, CHEN Jian. Effect of sulfolane on CO₂ absorption and desorption by monoethanolamine aqueous solution[J]. CIESC Journal, 2016, 67(12): 5244-5251.

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环丁砜对乙醇胺溶液吸收和解吸CO₂的影响

Effect of sulfolane on CO₂ absorption and desorption by monoethanolamine aqueous solution

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