电渗析
氨
能源消耗
水溶液
工艺工程
膜
过程(计算)
能量回收
化学
废物管理
化学工程
材料科学
环境科学
计算机科学
能量(信号处理)
工程类
电气工程
统计
数学
有机化学
物理化学
操作系统
生物化学
作者
Zhengyuan Song,Guogang Sun,Zetao Wang,Shiwei Yuan,Chenhao Xi
摘要
Abstract Aqueous ammonia is a promising absorbent in the field of post combustion CO 2 capture. However, the high volatilization of NH 3 results in a high energy requirement, as well as solid precipitation during the CO 2 regeneration process. A novel process was designed to reduce energy consumption and solve the problem. The bipolar membrane electrodialysis (EDBM) unit and CO 2 regeneration reactor were taken as the regeneration part. In the novel process, the bubble in the EDBM unit would be eliminated, and the regeneration of CO 2 and aqueous ammonia would be operated separately, which significantly reduced energy consumption and avoided the risk of precipitation during regeneration. According to the simulation and calculation results, the CO 2 regeneration energy consumption of the novel process using H 2 SO 4 for CO 2 regeneration is 39.0% lower than that of the conventional ammonia‐based process, which shows good energy saving potential. Moreover, the novel process will be more competitive as membrane technology develops.
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