Desulphurization process

Details Desulphurization process Desulphurization process

C - Chemistry, Metallurgy

01

B

C01B 17/04 (2006.01) B01D 53/14 (2006.01) B01D 53/86 (2006.01)

Patent

CA 2739652

The invention relates to a desulfurization process, wherein a gas mixture is subjected to a separation process to separate the acidic components of the gas, an acid gas containing carbon dioxide and sulfur compounds, in particular hydrogen sulfide, being formed in this process, the acid gas being sent to a Claus plant for separation of elemental sulfur, and the residual gas leaving the Claus plant being subjected to a further separation, in which the water formed in the Claus process is at least partially removed, only technically pure oxygen being supplied as the oxygen-containing reaction gas to the Claus plant, and carbon dioxide in a purity which allows direct sequestration or industrial utilization being removed downstream from the Claus plant.

L'invention concerne un procédé de désulfurisation selon lequel un mélange gazeux est soumis à un processus de séparation pour la séparation de composants gazeux acides; un gaz acide contenant du dioxyde de carbone et des composés de soufre, notamment de l'hydrogène sulfuré, est formé; le gaz acide est acheminé à une installation Claus pour l'extraction de soufre élémentaire; et le gaz résiduel quittant l'installation Claus est soumis à une autre séparation au cours de laquelle l'eau formée lors du processus Claus est au moins partiellement retirée. Selon l'invention, de l'oxygène techniquement pur est exclusivement acheminé à l'installation Claus en tant que gaz de réaction contenant de l'oxygène, et en aval de l'installation Claus, du dioxyde de carbone est extrait dans une pureté permettant une séquestration directe ou une utilisation technique.

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