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AssigneeHaldor TopsøE A/S
InventorsNiklas Bengt JAKOBSSON, Kurt Agerbæk CHRISTENSEN
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A combustible gas from carbon black production is utilized in a gas engine by adding an oxygen-containing gas to the combustible gas, passing said mixed gas over a selective catalyst, which is active for oxidizing H2S to SO2 but substantially inactive for oxidation of CO, H2 and other hydrocarbons with less than 4 C-atoms, passing the converted gas through an SO2 removal step, and passing the cleaned gas to a gas engine or to an energy recovery boiler. This way, the tail gas from carbon black production, which is normally combusted in a CO boiler or incinerated, can be utilized to good effect.
A method for utilization of a combustible gas from carbon black production in a gas engine, said method comprising the steps of
A selective catalyst, which is active for oxidizing H2S to SO2 in reducing CO/H2 containing gases, said catalyst consisting of one or more metal oxides, in which the metal is selected from the group consisting of V, W, Ce, Mo, Fe, Ca and Mg, and one or more supports taken from the group consisting of Al2O3, SiO2, SiC and TiO2, optionally in the presence of other elements in a concentration below 1 wt %.
Dependencies are inferred from the claim text.