Reasons for high total sulfur content in refined liquefied gas
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In this unit, liquefied petroleum gas passes through the catalytic stabilization stage and the coking stabilization stage before entering the desulfurization tower; there, hydrogen sulfide is removed using methyl diethanolamine. After pre-alkaline washing, the gas enters the desulfurization and alkylation tower, where it goes through a water washing and sand filtration unit. The alkaline solution is then mixed with non-activated air for redox regeneration. But recently there has been a strange issue: the total sulfur content after desulfurization of liquefied gas is lower than that of desulfurized alcohol. Could anyone help me understand why this is happening?
Although this falls under your catalysis role, it still relates to gas processing, so I’ve transferred it to the petrochemical deep processing section for you!