Ammonia escape control in carbon dioxide capture using ammonia method

doi:10.3969/j.issn.0438-1157.2014.10.044

Abstract

Abstract: This paper focuses on ammonia evaporation in ammonia-based CO₂ capture. Based on our previous research, glycerol and Co(Ⅱ) with promising effect on controlling ammonia escape were studied. The mechanisms of controlling ammonia escape using glycerol and Co(Ⅱ) were analyzed with IR, UV, XRD and the impact on CO₂ removal and desorption was investigated. Both glycerol and Co(Ⅱ) could control ammonia escape with average efficiency of above 40%. Glycerol and Co(Ⅱ) had no significant effect on absorption of carbon dioxide, while Co(Ⅱ) could promote desorption of CO₂.

Key words: CO₂ capture, ammonia method, evaporation, control

摘要： 本研究致力于解决再生氨法碳捕集过程中氨的逃逸问题。根据实验室前期研究结果，分别选取抑制效果较好的丙三醇和Co（Ⅱ）进行实验研究。详细分析了其抑制氨逃逸机制，并通过IR、XRD等对物种进行分析。同时探究其对再生氨法碳捕集过程CO₂脱除效率和解吸效果的影响。实验结果表明，丙三醇和Co（Ⅱ）对氨逃逸均有较好的抑制效果，平均抑氨效率在40%以上。二者的引入对吸收过程均无显著影响，且Co（Ⅱ）能使CO₂解吸比例提高。

关键词: 二氧化碳捕集, 氨法, 吸收, 控制

CLC Number:

X511

MA Shuangchen, CHEN Gongda, MA Xiaoying, GUO Meng, HAN Tingting, SONG Huihui. Ammonia escape control in carbon dioxide capture using ammonia method[J]. CIESC Journal, 2014, 65(10): 4086-4093.

马双忱, 陈公达, 马宵颖, 郭蒙, 韩停停, 宋卉卉. 氨法碳捕集过程中氨逃逸控制[J]. 化工学报, 2014, 65(10): 4086-4093.

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