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Investigation on the Phase-Change Absorbent System MEA + Solvent A (SA) + H2O Used for the CO2 Capture from Flue Gas
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-02-20 , DOI: 10.1021/acs.iecr.8b04985 Kun Zhu 1, 2 , Houfang Lu 1, 2 , Changjun Liu 1 , Kejing Wu 2 , Wei Jiang 1 , Jingxing Cheng 1 , Siyang Tang 1 , Hairong Yue 1 , Yingying Liu 2 , Bin Liang 1, 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-02-20 , DOI: 10.1021/acs.iecr.8b04985 Kun Zhu 1, 2 , Houfang Lu 1, 2 , Changjun Liu 1 , Kejing Wu 2 , Wei Jiang 1 , Jingxing Cheng 1 , Siyang Tang 1 , Hairong Yue 1 , Yingying Liu 2 , Bin Liang 1, 2
Affiliation
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Amine-based CO2 postcombustion capture is a commercialized technology for recovery CO2 from flue gas, and the energy consumption is concentrated in the regenerative stage. The phase-change solvent system, monoethanolamine (MEA, absorbent) + solvent A (SA, solvent) + water (solvent), was investigated on the performances of CO2 absorption and desorption. CO2-rich solvent can be continuously separated for the feeding flow of the regeneration tower; thereby, it significantly reduces the energy of regeneration. The results show that the solvent with suitable composition can easily separate the CO2-rich phase from the solvent, and the CO2-rich phase accounts for more than 98% of the total CO2. At 293–333 K, the temperature has no significant effect on the absorption rate and phase equilibrium. The estimation of energy consumption shows that the reboiler work can be reduced by 43.6% compared with that using 20 wt % MEA aqueous solution.
中文翻译：
用于吸收烟气中CO 2的相变吸收体系MEA +溶剂A（SA）+ H 2 O的研究
胺基CO 2燃烧后捕集是从烟气中回收CO 2的商业化技术，其能耗集中在再生阶段。研究了相变溶剂体系单乙醇胺（MEA，吸收剂）+溶剂A（SA，溶剂）+水（溶剂）的CO 2吸收和解吸性能。可以连续分离出富含CO 2的溶剂，用于再生塔的进料。因此，它显着降低了再生能量。结果表明，具有合适组成的溶剂可以很容易地从溶剂中分离出富CO 2相，并且CO 2富集相占总CO 2的98％以上。在293–333 K时，温度对吸收速率和相平衡没有显着影响。能量消耗的估计表明，与使用20 wt％MEA水溶液相比，再沸器的工作量可减少43.6％。
更新日期：2019-02-20
中文翻译：
用于吸收烟气中CO 2的相变吸收体系MEA +溶剂A（SA）+ H 2 O的研究
胺基CO 2燃烧后捕集是从烟气中回收CO 2的商业化技术，其能耗集中在再生阶段。研究了相变溶剂体系单乙醇胺（MEA，吸收剂）+溶剂A（SA，溶剂）+水（溶剂）的CO 2吸收和解吸性能。可以连续分离出富含CO 2的溶剂，用于再生塔的进料。因此，它显着降低了再生能量。结果表明，具有合适组成的溶剂可以很容易地从溶剂中分离出富CO 2相，并且CO 2富集相占总CO 2的98％以上。在293–333 K时，温度对吸收速率和相平衡没有显着影响。能量消耗的估计表明，与使用20 wt％MEA水溶液相比，再沸器的工作量可减少43.6％。
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