Dry desulfurization desulfurization method is common, widely used as fine desulfurization.

Activated carbon desulfurization

The principle of desulfurization

The main mechanism of activated carbon desulfurization is catalytic and adsorption. When containing H2S gas through the activated carbon bed, an exothermic reaction occurs under atmospheric pressure, and on the surface of activated carbon were oxidized into sulfur and no water, the result is the adsorption of activated carbon, in order to achieve the purpose of desulfurization.

Regeneration principle

Superheated steam temperature is above 400 by the activated carbon bed will parse out the activated carbon adsorption of elemental sulfur, so that the activated carbon can be regenerated to continue to use, sulfur recovery. But the adsorption capacity of activated carbon will gradually decrease with time, reach a certain time to promote the adsorption capacity.

Iron oxide desulfurization method

The principle of desulfurization

2FeOOH+3H2S==Fe2S3H2O+3H20

Regeneration principle

Fe2S3H2O+1.5O2==2FeOOH+3S