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1.新疆大学 西北能源碳中和教育部工程研究中心,新疆 乌鲁木齐 830017
2.新疆大学 电气工程学院,新疆 乌鲁木齐 830017
3.国家能源集团新能源技术研究院有限公司,北京 102211
刘欣甜(2001—),硕士研究生,研究方向为变质胺液净化回收,E-mail:2276341662@qq.com。
美合日阿依·穆太力普(1989—),博士,副教授,研究方向为CO2捕集、利用与封存技术,E-mail:mhriay@xju.edu.cn。
收稿:2025-04-14,
修回:2025-06-16,
纸质出版:2026-05-25
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刘欣甜,美合日阿依·穆太力普 ,孟瑞红等.减压蒸馏法回收变质胺液及CO2捕集性能研究[J].低碳化学与化工,2026,51(5):95-103. DOI: 10.12434/j.issn.2097-2547.20250181.
LIU Xintian,MEIHEIRIAYI Mutailipu,MENG Ruihong,et al.Study on recovery of degraded amine solutions by vacuum distillation and their CO2 capture performances[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(5):95-103. DOI: 10.12434/j.issn.2097-2547.20250181.
刘欣甜,美合日阿依·穆太力普 ,孟瑞红等.减压蒸馏法回收变质胺液及CO2捕集性能研究[J].低碳化学与化工,2026,51(5):95-103. DOI: 10.12434/j.issn.2097-2547.20250181. DOI:
LIU Xintian,MEIHEIRIAYI Mutailipu,MENG Ruihong,et al.Study on recovery of degraded amine solutions by vacuum distillation and their CO2 capture performances[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(5):95-103. DOI: 10.12434/j.issn.2097-2547.20250181. DOI:
醇胺溶液在CO
2
捕集循环再生过程中易发生降解变质,导致有效胺浓度降低,进而影响CO
2
捕集性能。针对质量分数为26.71%的乙醇胺(MEA)变质胺液、总胺质量分数为20.63%的MEA-N-甲基二乙醇胺(MDEA)变质胺液(20.63%-D),采用减压蒸馏法对其进行了回收,并对回收胺液的CO
2
捕集性能进行了研究。结果表明,MEA变质胺液的胺回收率为94.42%,高于20.63%-D的胺回收率(75.49%)。总胺质量分数为40%的MEA-MDEA回收胺液(40%-R)的CO
2
解吸容量(1.71 mol/kg)为20.63%-D(0.86 mol/kg)的1.99倍,可基本满足燃煤电厂的CO
2
捕集需求。向40%-R中补加质量分数为5%的MEA可改善胺液的CO
2
捕集性能,所得胺液(40%-Ropt)的CO
2
吸收容量为1.95 mol/kg,比40%-R提高了0.14 mol/kg。
Degradation often occurs during the cyclic regeneration of alkanolamine solutions for CO
2
capture
leading to reduction in effective amine concentration and consequently impairing CO
2
capture performance. Monoethanolamine (MEA) degraded amine solution with mass fraction of 26.71% and MEA-N-methyldiethanolamine (MDEA) degraded amine solution with total amine mass fraction of 20.63% (20.63%-D) were recovered via vacuum distillation. And CO
2
capture performances of the recovered amine solutions were evaluated. The results indicate that the amine recovery rate of MEA degraded amine solution is 94.42%
higher than that of 20.63%-D (75.49%). The CO
2
desorption capacity of MEA-MDEA recovered amine solution with total amine mass fraction of 40% (40%-R) (1.71 mol/kg) is 1.99 times that of 20.63%-D (0.86 mol/kg)
which can basically meet the CO
2
capture requirements of coal-fired power plants. Adding MEA with mass fraction of 5% to 40%-R can improve the CO
2
capture performance of the resulting amine solution (40%-Ropt). The CO
2
absorption capacity of 40%-Ropt is 1.95 mol/kg
which is 0.14 mol/kg higher than 40%-R.
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