Seeking help with issues regarding the compressor in the hydrogen refining cycle hydrogen compressor
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Regarding the diesel hydrodesulfurization issue in our unit: the temperature of the recycled hydrogen entering the desulfurization tower is 38 degrees, while the temperature of the lean liquid is 47 degrees. The temperature of the recycled hydrogen coming out of the desulfurization tower rises to 58 degrees. Isn’t the principle behind the operation of this desulfurization tower based on physical adsorption? How did the temperature appear? ； 2. Our compressors are reciprocating types, and hydrogen sulfide keeps leaking from the high-pressure outlet. The compressors have been repaired several times, yet the pressure at the high-pressure outlet remains very high. Is there any good solution?
1 In chemical reactions, acid-base neutralization releases heat. 2 Try replacing the gasket
It’s a chemical reaction, not physical adsorption. Generally, hydrogen circulation compressors use centrifuges driven by turbines; reciprocating compressors are prone to leaks
I’m not sure whether the principle behind your absorption towers is indeed physical adsorption; physical adsorption also involves a slight release of heat.
The lean solution is methyl diethanolamine, and a chemical reaction with hydrogen sulfide releases heat! Where exactly do you mean it’s leaking?
Our recycle hydrogen compressor is reciprocating type, with high leakage rates; the maintenance team says there’s no way to completely resolve this issue, but there is a hydrogen sulfide smell at the site
Replace the packing in the press; it won’t work if there’s severe leakage
Lean liquid desulfurization is a process of chemical adsorption that releases heat, thereby increasing the temperature of the recycled hydrogen.
The first one is the heat release process; there’s not much to say about it. As for the second one, I’m not sure how you fix it – I suspect there’s a problem with the primary stuffing box. Also, what is the nitrogen pressure in your intermediate isolation chamber? Increase the nitrogen pressure in the intermediate isolation chamber