A large-scale experimental study on CO_(2) capture utilizing slurry-based ab-adsorption approach

作     者：Shuren Yan Peng Xiao Ding Zhu Hai Li Guangjin Chen Bei Liu Shuren Yan;Peng Xiao;Ding Zhu;Hai Li;Guangjin Chen;Bei Liu

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing 102249China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第3期

页      面：56-66页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：The authors gratefully acknowledge the financial supports received from the National Natural Science Foundation of China(21776301,21636009) the Science Foundation of China University of Petroleum,Beijing(2462018BJC004) 

主　　题：CO_(2)capture Zeolitic imidazolate framework-8 Slurry Bubble column Scale-up 

摘      要：The increasing concentration of CO_(2) in atmosphere is deemed the main reason of global ***,efficiently capturing CO_(2) from various sources with energy conservation is of great ***,a series of experiments were carried out to successfully test the slurry-based ab-adsorption method for continuously capturing CO_(2) in the large-scale cycled separation unit with cost-effect taking into account the scale-up criteria.A bubble column(with height 4900 mm and inner diameter 376 mm)and a desorption tank(with volume 310 L)are the essential components of the separation *** novel slurry used in this study was formed with zeolitic imidazolate framework-8 and 2-methylimidazole-water *** influence of operation conditions was investigated *** results show that increasing sorption pressure and slurry height level,decreasing gas volume flow and sorption temperature are beneficial for separation *** volume fraction of CO_(2) in the feed gas was also *** the scale-up effect had been observed and it was found that it exerted a negative effect on CO_(2) capture,depending on experimental conditions,CO_(2) removal efficiency could still reach 85%-95%and the maximum CO_(2) loading in the recycled slurry could be up to0.007 mol·L-1·***,the slurry-based method could be operated well even under very moderate regeneration conditions(333 K and 0.05 MPa),which means that the novel approach shows greater energy conservation than traditional amine absorption methods.