CATALYST FOR REMOVING SULFUR COMPOUNDS FROM INDUSTRIAL GASES AND A METHOD FOR PREPARATION THEREOF Russian patent published in 2006 - IPC B01J23/22 B01J23/04 B01J27/53 B01J37/04 B01D53/48 

FIELD: gas treatment catalyst.

SUBSTANCE: invention relates to treatment of sulfur-containing emission gases according to Claus method and can find use in enterprises of gas, petroleum, and chemical industries as well as of ferrous and nonferrous metallurgy. Task of invention was to provide a catalyst with elevated strength and elevated activity simultaneously in three Claus process reactions: oxidation of hydrogen sulfide with sulfur dioxide; oxidation of hydrogen sulfide with sulfur dioxide in presence of oxygen; and carbonyl sulfide hydrolysis. The task is solved with the aid of sulfur-removing catalyst including titanium oxide, vanadium oxide, calcium sulfate and modifying metal compound. The latter is at least one of metal compounds selected from alkali metal (Me = K, Na, Cs or mixture thereof) oxides take at following proportions, wt %: V₂O₅ 5.5-10.0, CaSO₄ 10.0-20.0, Me₂O 0.1-2.0, provided that weight ratio Me₂O/V₂O₅ = 0.01-0.36. Catalyst contains pores 10-40 nm in size in amount 50-70%. Preparation of catalyst comprises preparation of catalyst mass, extrusion, drying, and calcinations at temperature not higher than 400°C.

EFFECT: simplified catalyst preparation procedure, which is wasteless, energy efficient, and environmentally friendly.

6 cl, 2 tbl, 2 ex