Process of removing of COS and CS.sub.2 compounds contained in an industrial gas

A process for the reduction of COS and CS.sub.2 compounds contained in concentrations of from 0.01 to 6% by volume in a gas containing water vapor which comprises:

• contacting the gas containing water vapor, in a reaction zone, with a catalyst selected from the group consisting of (a) titanum dioxide, (b) a mixture of titanium dioxide with a sulfate of an alkaline earth metal selected from the group consisting of Ca, Ba, Sr and Mg in a weight ratio of titanium dioxide, expressed as TiO.sub.2, to alkaline earth metal sulfate of from about 99:1 to about 6:4 or (c) a mixture of (a) or (b) with up to about 30% by weight, of the mixture, of at least one composition selected from the group consisting of silica, clay, alumina, silicates, titanium sulfate and ceramic fibers;
• controlling the quantity of water vapor present in the gas in contact with the catalyst in a manner such that in said gas the R ratio of the number of moles of water vapor to the number of moles of COS and CS.sub.2 compounds present in the gas have a value of from the stoichiometric value corresponding to a complete hydrolysis of said compounds to 50/1+1.5 p, with p representing the molar fraction of CS.sub.2 in the total molar quantity of COS and CS.sub.2 contained in the gas;
• and by maintaining the temperature in the reaction zone at a value corresponding to the temperature at the exit of said zone comprised between .phi..sub.1 =100 (0.6+1.6q).degree.C. and .phi..sub.2 =100 (2.2+q).degree.C., wherein q has a value of zero when p has a value of from 0 to 0.1, or the value 1 when p has another value.