October 2012

Sulfur 2012 Supplement

Optimize sulfur recovery in dilute H2S sources

The new direct oxidation process is an economic method for sulfur recovery from low-H2S content gases, converting H2S in a gas catalytic process directly to elemental sulfur.

Heisel, M. P., ITS Reaktortechnik GmbH; Slavens, A. F., WorleyParsons

With the recent emergence of “sweeter” fuel sources such as unconventional gas and biofuels, the sulfur industry is challenged in providing economical solutions to desulfurize gas streams with low hydrogen sulfide (H2S) content. Historically, the sweetening of such gases was primarily accomplished by using liquid redox processes.a These established, sweetening processes treated the raw gas stream directly and did not require an amine treating step, thereby reducing the total capital and operating costs of the facility. Liquid redox processes are capable of scrubbing the H2S to very low levels and meeting typical treated-gas specifications, as proven by several hundred units that

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