Ifp Energies Nouvelles

Axens

Eric Roisin

Christophe Nedez

Nicolas Lambert

Yann Loonis

A method for treatment of a gas having 10 to 0.5% by volume of at least one of COS and CS, and 30 ppm to 5% by volume of unsaturated hydrocarbons:

Method for treatment of gas

For conversion of sulphur-containing compounds present in a gas comprising HS and sulphur-containing compounds into additional HS, a step A of contacting the gas with a reducing gas and a hydrogenation catalyst comprising cobalt, molybdenum and an alumina support, the sum of cobalt and molybdenum, in the oxide form, being 3% to 25% by weight, the surface area of alumina being more than 140 m/g. In step B, effluent gas from step A is contacted with a catalyst comprising at least one alkaline-earth element, at least one dopant being iron, cobalt or molybdenum and at least one compound of titanium oxide and/or zirconium oxide, the catalyst for step B) being either in bulk or supported.

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Rueil Malmaison, France

Eric Roisin