The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 1981
Filed:
Aug. 08, 1979
Andre Deschamps, Noisy Le Roi, FR;
Sigismond Franckowiak, Rueil Malmaison, FR;
Andre Sugier, Rueil Malmaison, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
Process for purifying a gas containing hydrogen sulfide, optionally with carbon dioxide, particularly adapted to the purification of gases of relatively low hydrogen sulfide content, e.g. not in excess of 1% of H.sub.2 S by volume, comprising contacting the gas with an absorption mass containing copper, at a temperature of from 250.degree. to 550.degree. C., to absorb the hydrogen sulfide and form copper sulfide; wherein the absorption mass is regenerated by interrupting the contact of the gas with the mass when the mass is at least partially saturated, contacting the mass with an oxidizing gas containing from 0.5 to 5% by volume of oxygen, at a temperature of from 250.degree. to 345.degree. C., to convert the copper sulfide substantially to copper sulfate, and then contacting the mass with a reducing gas containing from 5 to 20% by volume of hydrogen, at a temperature of from 300.degree. to 450.degree. C., to convert the copper sulfate substantially to sulfur dioxide and metallic copper, thereby regenerating the mass, which is then contacted again by the hydrogen sulfide containing gas.