Catalytic oxidation of hydrogen sulphide on activated carbons |
| |
Authors: | Jürgen Klein Klaus-Dirk Henning |
| |
Affiliation: | Bergbau-Forschung GmbH, Essen, FRG |
| |
Abstract: | Activated carbon is a suitable adsorbent for removal of hydrogen sulphide from natural, synthesis or other product gases. The process depends predominantly on physical adsorption, though catalytic oxidation is also involved. During catalytic oxidation the H2S is converted in the presence of oxygen to elemental sulphur, which is adsorbed onto the internal surface of the activated carbon, thus leading to a sulphur load of up to 120% by weight. The oxidation rate depends on the partial pressure of both reactants, H2S and O2 and is largely controlled by the characteristics of the activated carbon. The activity of the catalyst can be improved by impregnating the activated carbon with promoters such as iron and iodine. The regeneration of spent carbon is currently carried out using hot gas desorption methods at temperatures around 450 °C. |
| |
Keywords: | oxidation catalytic oxidation hydrogen sulphide activated carbons |
本文献已被 ScienceDirect 等数据库收录! |