Hydrate formation from liquid CO_(2) in a glass beads bed

作     者：Nan Li Jing-Yu Kan Chang-Yu Sun Guang-Jin Chen Nan Li;Jing-Yu Kan;Chang-Yu Sun;Guang-Jin Chen

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing at KaramayKaramay 834000China 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：2022年第35卷第3期

页      面：185-191页

核心收录：

学科分类：0710[理学-生物学] 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）] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0707[理学-海洋科学] 0705[理学-地理学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.22008258) Tianshan Youth Program in Xinjiang Uygur Autonomous Region(2019Q089) the Scientific Research Program of Universities in Xinjiang Uygur Autonomous Region(XJEDU2019Y069)。 

主　　题：Liquid CO_(2) Hydrate formation Sequestration Kinetic Water conversion 

摘      要：CO_(2)sequestration in marine sediments as solid hydrates is a potential way to capture and store anthropogenic CO_(2).In this study,hydrate formation from liquid CO_(2)in marine sediments was simulated in a glass beads bed,and the factors affecting the kinetics of hydrate formation were investigated.The results indicated that the rapid initial hydrate formation with a high driving force always increases the mass transfer resistance,which slows down hydrate growth.The final ratio of water conversion is higher under conditions of low temperature and higher pressure.A smaller particle size is conductive to initial CO_(2)hydrate growth,but the water conversion ratio in a bed with larger particles is slightly higher.Compared with other factors,the change in water saturation has an obvious effect on the final water conversion.To inhibit the initial hydrate formation during the injection process,in this paper,a kinetic inhibitor is proposed for pre-injection into marine sediments.This work shows that at a low pressure,a lowconcentration inhibitor has an obvious inhibition effect on hydrate growth.However,at a high pressure,it is necessary to increase the concentration of inhibitor to produce an obvious inhibition effect.