LPG desulfurization and denaturation process
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The desulfurization process for liquefied gas – what processes are being used currently, and what are their advantages and disadvantages? We are currently using the advanced desulfurization technology provided by a company in Hebei; the total sulfur content in the liquefied gas after desulfurization is below 30 ppm. However, there is one problem: during the regeneration of the alkaline solution, a black, viscous substance is produced, which is difficult to handle and often causes blockages in the pipelines
You can take samples for analysis to determine whether these black substances are disulfides or sulfur that has been formed
Do you also use this process? Is there such a substance in it?
I’m not concerned right now about what its ingredients are; I want to find a way to reduce its production
It is a bit dark, but not as much as you said, and it won’t clog the pipes.
Is it darkening due to back-extraction of oil, or is it present in the three-phase separator during shutdown for maintenance?
The materials removed during inspection, maintenance, and tank cleaning.
I should ask Hebei Jingzhi; they claim to be really great now, and they should be able to explain it.
Excessive sulfide accumulation at the bottom of the tank can be reduced by regular drainage during normal production； However, there are indeed quite a lot of residues during inspection and maintenance.
It’s probably the amine solution brought from ahead; check to see if it is indeed an amine solution. However, it should have no impact on the quality of the liquefied gas