Process for the production of sulfur from sulfur dioxide

Details Process for the production of sulfur from sulfur dioxide Process for the production of sulfur from sulfur dioxide

C - Chemistry, Metallurgy

01

B

C01B 17/04 (2006.01)

Patent

CA 2611873

The reduction of gas streams containing sulfur dioxide to elemental sulfur is carried out by contacting a reducing gas, such as natural gas, methanol or a mixture of hydrogen and carbon monoxide, with recycled sulfur to produce a stream containing hydrogen sulfide that may be reacted with the gas stream that contains sulfur dioxide. Gas streams with a molar concentration of sulfur dioxide from 1 to 100% may be processed to achieve nearly 100% sulfur recovery efficiency.

La réduction de débits gazeux contenant du dioxyde de soufre en soufre élémentaire est réalisée par placement d'un gaz réducteur, tel que le gaz naturel, le méthanol ou un mélange d'hydrogène et de monoxyde de carbone, au contact d'un soufre recyclé pour produire un débit contenant de l'hydrogène sulfuré pouvant être mis en réaction avec le débit gazeux contenant du dioxyde de soufre. Des débits gazeux présentant une concentration molaire de dioxyde de soufre comprise entre 1 et 100 % peuvent être traités pour obtenir une efficacité de récupération du soufre quasi-totale.

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