Dry desulfurization is a common desulfurization method, suitable for the precise removal of H₂S from various gases such as natural gas, water gas, semi water gas, producer gas, biomass gas, coke oven gas, shift gas, steel plant feed gas, biogas, petrochemical, etc. It is widely used for fine desulfurization.

Iron oxide desulfurization

Iron oxide desulfurizer is an efficient gas purification agent processed with iron oxide as the main active component and other promoters added. It has a high ability to remove hydrogen sulfide between 20 ℃ and 100 ℃.

1、Equation of desulfurization reaction principle：

2Fe(OH)₃·XH₂O+3H₂S－Fe₂S₃·XH₂O+6H₂O     (desulfurization)

Fe₂O₃·XH₂O+3H₂S=Fe₂S₃·XH₂O+3H₂O           (desulfurization)

Fe₂S₃=2FeS+S                                                   (decompose)

Fe₂S₃·XH₂O+ O₂=Fe₂O₃·XH₂O+3S                   (regeneration)

2FeS+O₂+XH₂O=Fe₂O₃·XH₂O+2S                    (regeneration)

2、The advantages of desulfurization with iron oxide:

1)   High desulfurization accuracy

2)   Fast reaction speed

3)   Wide temperature range

4)   Widely applicable conditions, can be used under anaerobic conditions