Method for the adsorptive removal of hydrogen sulfide from gas mixtures

摘要

A method is disclosed for the adsorptive removal of H2S from gas mixtures in C-containing adsorption agents with 1-80 bar pressures and regeneration, employing pressure lowering and/or temperature change and simultaneous rinsing with an at most negligibly absorbable component of the gas mixture. A carbon molecular sieve of fossil and/or bituminous fuel is used, with for pore diameter less than 10 nm a pore volume of 15-25 cm3/100 g, and micropore volume in pore diameter range 0.35-10 nm less than 10 cm3/100 g. The inner surface of the molecular screen can be freed of surface groups capable of reacting with the H2S by aftertreatment with reducing gas.