Patent ID: 8591847

Claim:
A wet desulfurization method for removing hydrogen sulfide from a gaseous stream, comprising the following steps: (a) contacting and reacting the gaseous stream comprising hydrogen sulfide with a suspension comprising a desulfurizer comprising amorphous iron oxide hydroxide in a desulfurization reactor; (b) removing suspended waste agent from the desulfurization reactor to a regeneration reactor, and regenerating desulfurizer from the suspended waste agent using an oxygen-containing gas, the pH value of the suspended waste agent in the regeneration reactor ranging from 6.5 to 7.5; and (c) removing suspended desulfurizer comprising amorphous iron oxide hydroxide regenerated in step (b) to the desulfurization reactor in step (a), and contacting and reacting the gaseous stream comprising hydrogen sulfide with the suspended desulfurizer.