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MEA/SG capture CO2 in thermal electrochemical co-drive system
Chemical Engineering and Processing: Process Intensification ( IF 4.3 ) Pub Date : 2019-12-09 , DOI: 10.1016/j.cep.2019.107775
Wancheng Ding , Yunsong Yu , Zaoxiao Zhang , Geoff Wang

The Thermal Electrochemical Co-drive System (TECS) has the advantages of high desorption rate and low energy consumption. However, the fluid flow and capture performance is still unknown in TECS. Thus, a comprehensive experiment and simulation work on TECS is performed to demonstrate the fluid flow and capture performance in a pilot-scale TECS. The reaction kinetics of the electrolyzed MEA-SG solution is discussed. A pilot-scale TECS is set up and gas-liquid two-phase flow model is developed for the TECS. According to the numerical computation and experiment, the gas-liquid two-phase flow field was analyzed under the thermal electrochemical co-drive conditions. The mechanism of CO2 capture was clearly understood. The synergy of thermal desorption and electrochemical desorption was quantified numerically. The results showed that the temperature of TECS was reduced below 333 K and the energy consumption amount was determined at 1.3 G J/t to 2.1 G J/t, which is much lower than the conventional process. LNG cold energy reduced the desorption energy consumption.



中文翻译:

MEA / SG在热电化学共驱系统中捕获CO 2

热电联动系统(TECS)具有脱附率高,能耗低的优点。但是,在TECS中,流体的流动和捕获性能仍然未知。因此,在TECS上进行了全面的实验和仿真工作,以证明在中试规模的TECS中的流体流动和捕获性能。讨论了电解MEA-SG溶液的反应动力学。建立了中试规模的TECS,并为TECS建立了气液两相流模型。根据数值计算和实验,分析了热电化学共驱条件下的气液两相流场。CO 2的作用机理捕获被清楚地理解。数值量化了热脱附和电化学脱附的协同作用。结果表明,TECS的温度降低到333 K以下,能耗确定为1.3 G J / t至2.1 G J / t,这远低于常规工艺。液化天然气冷能减少了解吸能量的消耗。

更新日期:2019-12-09
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