Experimental Study on Breakthrough Separation for Hydrogen Recovery from Coke Oven Gas Using ZIF-8 Slurry

Wan Chen, Minglong Wang, Shaowu Yang, Zixuan Huang, Mingke Yang, Xiaowan Peng, Bei Liu and Guangjin Chen
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Wan Chen: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Minglong Wang: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Shaowu Yang: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Zixuan Huang: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Mingke Yang: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Xiaowan Peng: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Bei Liu: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Guangjin Chen: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

Energies, 2022, vol. 15, issue 4, 1-12

Abstract: A large amount of COG (coke oven gas) is produced from coking plants every year, which contains 55–60% H 2 . In this work, the breakthrough separation of H 2 from COG with ZIF-8/ethylene glycol-water slurry was studied. Following the investigation of the (ab-ad)sorption isotherms of the single component gas CH 4 and H 2 , the main components of coke oven gas, in different slurries and their corresponding viscosities, and the influence of the operating conditions on the dynamic performance of CH 4 /H 2 separation in slurry were studied in a bubble column. Low temperature, inlet flow rate, high pressure, and solid content can extend the breakthrough time, where the longest breakthrough time interval between H 2 and CH 4 can be as long as 70 min, meaning the high purity of H 2 product could be obtained easily. All the results of this work prove the feasibility of the slurry method to separate CH 4 /H 2 mixture and provide a theoretical basis for practical industrial applications.

Keywords: coke oven gas; ZIF-8 slurry; gas separation; breakthrough experiment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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