Kinetics studies of IGCC syngas hydrate formation in the presence of corn cobs and tetrahydrofuran

被引：0
|
作者：
Zhang Q. [1 ,2 ,3 ,4 ,5 ]
Lyu Q. [2 ,3 ,4 ,5 ]
Li X. [2 ,3 ,4 ,5 ]
Yu Y. [2 ,3 ,4 ,5 ]
Zhou S. [1 ]
机构：
[1] Jiangsu Key Laboratory of Oil-Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University, Changzhou
[2] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou
[3] Key Laboratory of Gas Hydrate, Chinese Academy of Sciences, Guangzhou
[4] Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou
[5] Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 01期
关键词：
CO[!sub]2[!/sub] separation; Hydrate; Hydrate structure; IGCC syngas; Kinetics; Tetrahydrofuran;
D O I：
10.16085/j.issn.1000-6613.2021-0325
中图分类号：
学科分类号：
摘要：
A series of experiments was conducted at 276.15K and 6.0MPa to evaluate the kinetics of IGCC synthesis gas hydrate formation in the system containing corn cobs and tetrahydrofuran (THF) by measuring induction time, gas consumption, CO2 recovery and hydrate structure. The results showed that for all experiment cases with or without corn cobs, the induction time was within 180s. Besides, the induction time of the system containing corn cobs was slightly longer than that without corn cobs and this difference almost disappears as the THF concentration increases to mole fraction 4.0% and 5.6%. Further, relative to the system without corn cobs, the time required to complete hydrate formation was longer in the presence of corn cobs. As the THF concentration increases, less time was required for achieving 90% of final gas consumption in the presence of corn cobs. In addition, at a certain THF concentration, the gas consumptions in the presence of corn cobs were larger than that in the system without corn cobs. These indicate that the addition of corn cobs had a positive effect on the kinetics of IGCC syngas hydrates formation and the CO2 recovery. Interestingly, structure analysis proves that only s‍Ⅱ hydrates were observed in the presence of THF with or without corn cobs, while both s‍‍Ⅰ and s‍Ⅱ hydrates were found in pure water. © 2022, Chemical Industry Press Co., Ltd. All right reserved.
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页码：174 / 181
页数：7
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