吸附剂
吸附
吸附
化学
二氧化碳去除
过程(计算)
发电站
工艺工程
热力学
材料科学
二氧化碳
工程类
有机化学
计算机科学
操作系统
物理
作者
J.W. Dijkstra,Stéphane Walspurger,Gerard D. Elzinga,J.A.Z. Pieterse,Jurriaan Boon,W.G. Haije
标识
DOI:10.1021/acs.iecr.7b03552
摘要
A combined experimental and modeling study was performed to evaluate the relation between sorbent characteristics and process performance for solid sorption postcombustion CO2 capture. A pulverized coal (PC) and a natural gas combined cycle (NGCC) power plant were considered, addressing CO2 and H2O sorption. The measured isotherms for PEI/silica sorbent were implemented in an equilibrium-based flow sheeting model. The PC regeneration heat demand is 3.9 GJ/ton CO2 captured. This is lower than that of the NGCC and, though a direct comparison is not valid, similar to a literature MEA case. Solid sorption systems hold the promise to be energetically superior to MEA: a 2-fold increase in CO2 adsorption capacity (to 4.4 mmol/g) yields a regeneration heat demand of 3.3 GJ/ton, even when accompanied by a similar increase in H2O adsorption capacity.
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