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Stenger-Wasas Process
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The Stenger Wasas Process (SWAP) is an marginally exothermic reaction between carbon dioxide (CO<sub>2</sub>) and hydrogen sulfide (H<sub>2</sub>S) that produces water, carbon and sulphur. It is proposed to react H2S occurring in natural gas with CO2 to remove both from the stream . It is unclear whether this could remove any significant fraction of anthropogenic CO2 emissions; it might perhaps be better regarded as a mechanism for removing H2S from natural gas. The process is said to require a secret catalyst. The general equation for the SWAP is: :2H<sub>2</sub>S + CO<sub>2</sub> => 2H<sub>2</sub>O + 2S + C Process performance The Stenger-Wasas Process has been proposed for mass industrial application . The SWAP website asserts that the process has been proven to: *Reduce H<sub>2</sub>S to below the limits of detection by gas chromatography (under 4 parts per billion) *Be passive and self-sustaining once initiated *Marginally thermodynamically energy favorable (energy releasing) In addition, the same site assserts that the SWAP: *Requires minimal infrastructure, inexpensive and abundant catalysts and construction materials *Is suitable for continuous operation *Is easily implemented within existing natural gas processing methods History The SWAP is a gas desulfurization process, and was invented in 2007 by environmental engineer Ray Stenger and entrepreneur chemist Jim Wasas. See Also
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