METHOD OF DIRECT RECOVERY OF ELEMENTAL SULFUR FROM HYDROGEN SULFIDE-CONTAINING GASES, AND CATALYST FOR CARRYING IT THROUGH Russian patent published in 1999 - IPC

FIELD: removal of hydrogen sulfide from off gases. SUBSTANCE: gas containing up to 10 vol % of hydrogen sulfide and molecular oxygen and oxidation catalyst bed at elevated temperatures and higher volume rates of 3000-15,000h^-1. In order to perform this operation. Catalyst comprising chromium oxide, copper oxide and aluminium oxide is used, ratios of component being as follows, wt %: Cr₂O₃,10-66; CuO 5-34; Al₂O₃, 0-85. EFFECT: more efficient process for direct recovery of sulfur from gases at high conversion and selectivity with respect to sulfur. 8 cl, 32 ex, 1 tbl