Refinery Gases
From Refining
While the H2S that was dissolved in the original crude oil was flashed off during production and at the start of processing; additional H2S is generated by the reduction of other sulfur compounds during the refining process. Any processing carried out on a sulfur-containing stream will generate a non-condensing overhead off gas that contains H2S: visbreaking, coking, fluidized-bed catalytic cracking, hydrotreating, hydrofining, and hydrodesulfurization. Merichem’s LO CAT process has proven to be a highly effective desulfurization process that is capable of producing sulfur free off gases that are typically sent to the refinery fuel gas system. The LO CAT technology was first licensed to treat a refinery overhead off gas stream in 1981. The continued success of the LO CAT technology in refinery applications has lead to nearly two dozen installations worldwide.
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