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Temperature and pressure dependence of the CO2 absorption through a ceramic hollow fiber membrane contactor module
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-02-22 , DOI: 10.1016/j.cep.2020.107871
Hong Joo Lee , Min Kwang Kim , Jung Hoon Park , Edoardo Magnone

Temperature and pressure dependence of the CO2 absorption through a ceramic hollow fiber membrane contactor (CHFMC) modules were extensively evaluated and optimized. Results are presented for a CHFMC module consisting of 200 ceramic fibers in a single compact unit. The effect of gas temperatures and liquid absorbent temperatures was studied by altering the CO2 gas (N2 balance) and monoethanolamine (MEA) absorbent temperatures (20−50 °C). CO2 removal efficiency (%) was also evaluated as a function of CO2 gas composition (1.5–13 %, N2 balance). The CO2 removal efficiency (%) slightly increases when the temperature of the injected gas temperature increases from 20 °C to 40 °C, and then decreases as the temperature further increases from 40 °C to 50 °C. The MEA absorbent temperatures did not have a notable effect on the CHFMC module performance in the specific temperature range studied in this work. The effects of the liquid pressure drop do not appear to be significant for a given gas flow rate, but the gas pressure drop increases with gas flow rate and gas temperature. The findings in this study show that a CHFMC process is affected by the CO2 gas temperature and composition but quite independent of the MEA absorbent temperature.



中文翻译:

通过陶瓷中空纤维膜接触器模块吸收CO 2的温度和压力依赖性

广泛评估和优化了通过陶瓷中空纤维膜接触器(CHFMC)模块吸收CO 2的温度和压力依赖性。给出了一个紧凑的单元中由200根陶瓷纤维组成的CHFMC模块的结果。通过改变CO 2气体(N 2平衡)和单乙醇胺(MEA)吸收剂温度(20-50°C)来研究气体温度和液体吸收剂温度的影响。还评估了CO 2去除效率(%)与CO 2气体成分(1.5-13%,N 2平衡)的关系。一氧化碳2当注入气体温度从20°C升高到40°C时,去除效率(%)略有增加,然后随着温度从40°C进一步升高到50°C而降低。在这项工作研究的特定温度范围内,MEA吸收剂温度对CHFMC组件的性能没有显着影响。对于给定的气体流速,液体压降的影响似乎并不明显,但是气体压降随气体流速和气体温度的增加而增加。这项研究的结果表明,CHFMC过程受CO 2气体温度和组成的影响,但与MEA吸收剂温度完全无关。

更新日期:2020-02-22
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