Patent ID: 7060233
Filing Date: 2006-06-13
Classification: B01D,C01B

Abstract:
1. A method for simultaneous removal of hydrogen sulfide or other sulfur-containing compounds and mercury from a gas stream which comprises the steps of: a. contacting the gas stream containing hydrogen sulfide or other sulfur-containing compounds and mercury with a mixed metal oxide catalyst at a temperature equal to or less than about 400° C. in the presence of oxygen such that a substantial amount of the hydrogen sulfide or other sulfur-containing compounds present in the gas stream is oxidized to sulfur; and b. condensing the sulfur out of the gas stream whereby mercuric sulfide formed by interaction of the sulfur generated with mercury in the gas stream is also condensed with the sulfur, wherein the mixed metal oxide catalyst comprises a low oxidation activity metal oxide selected from the group consisting of titania, silica, zirconia, alumina and mixtures thereof and one or more higher oxidation activity metal oxides.