ABSTRACT
The removal of carbon dioxide (CO2) and hydrogen sulfide (H2S) from industrial and domestic gas mixtures is an important industrial process. The simultaneous separation of CO2 and H2S from crude natural gas, refinery gas, and coal gas produces a product gas with improved heating value, reduced volume, and decreased tendency to corrode pipelines and containers during transport, distribution, and storage. The removal of H2S from feed gas stream in ammonia synthesis prevents poisoning of the catalyst by the sulfide. H2S is toxic, and when present in the fuel gas, on combustion forms SO2, which is a major contributor to acid rain formation.
