Patent ID: 6114273
Filing Date: 2000-09-05
Classification: B01D

Abstract:
A process for the removal of sulfur oxides from gaseous or vapor media which process comprises contacting said media, in the presence of oxygen and H.sub.2 O, with a carbonaceous char, said carbonaceous char having been prepared bya. carbonizing a bituminous material selected from the group consisting of (i) bituminous coals, (ii) high rank, anthracite or semi-anthracite coals treated with alkali metals, (iii) low rank or sub-bituminous coals or bitumens, peat, lignite or ligno-cellulose materials treated with mineral acids, hydroxides or metal salts;b. oxidizing said bituminous material at temperatures below 700.degree. C. during or after said carbonization; andc. contacting said carbonized and oxidized bituminous material with one or more nitrogen-containing compounds prior to, not after, exposure of such material to temperatures equal to or greater than 700.degree. C.