| 摘要 |
PURPOSE:To remove hydrogen sulfide from coke oven gas, in high efficiency, at a low cost, by reacting hydrogen sulfide with CO2 in the presence of zeolite in a preliminary refining stage, and adsorbing and removing the produced carbonyl sulfide in the main refining apparatus. CONSTITUTION:The raw coke oven gas (COG) is passed through the tar-remover 1 and the compressor 2 to the adsorption column 5a filled with zeolite, silica gel and activated carbon in the order. The hydrogen sulfide in COG is converted to carbonyl sulfide at normal temperature in the presence of existing CO2, O2 and water by the catalytic action of the synthetic zeolite molecular sieve. After the adsorption and removal of ammonia in the silica gel layer and the BTX, etc., in the activated carbon layer, the gas is introduced into the main refining apparatus 8 filled with activated carbon and zeolite, and the carbonyl sulfide is adsorbed together with methane, CO, etc., to the adsorbents. H2 gas having high purity (>=99.99%) is delivered from the apparatus 8. |
