Key technical requirements for hydrogen production from coke oven gas with co-production of LNG
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This post was last edited by braveboy18 on 2021-9-8 at 15:41. Hello, colleagues. Our coking plant plans to utilize coke oven gas to produce hydrogen while simultaneously generating LNG. We would appreciate it if you could provide the key process technical requirements for this approach. Thank you
That’s a rather broad question! In the production of hydrogen and LNG from coke oven gas, many technologies are both critical and important. For example, coke oven gas methanation, as well as hydrogen production and separation processes, are all very important!
This requires dry desulfurization, wet desulfurization, membrane separation, and methanation
Hydrogen is produced alongside LNG through methanation. In membrane separation for hydrogen production, the pressure of hydrogen decreases.
Has the OP’s project been posted? We can exchange technical insights
I’m on it now; I’m in charge of the construction
Desulfurization, benzene and naphthalene removal, compression, medium-temperature hydrolysis, MDEA carbon removal, further desulfurization, membrane hydrogen extraction, hydrogen purification, remaining methane-rich stream, liquefaction distillation; the LNG is then stored in LNG tanks. A similar system was previously installed in Hejin, Shanxi.
It mainly depends on the design process; different processes involve different key technologies. The scale, whether to first separate LNG and then produce hydrogen or to carry out methanation before producing hydrogen, needs to be considered comprehensively.