Methods of removing hydrogen sulfide and generating electricity using alkaline sulfide fuel cell
AssigneeKorea Advanced Institute of Science and Technology
InventorsJong-In Han, Kwiyong Kik
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Abstract
The present invention relates to a method for removing hydrogen sulfide, which comprises absorbing hydrogen sulfide into an alkaline solution, and introducing the solution resulting from the absorption into the anode of a fuel cell to oxidize sulfide ion. The method comprises a step of absorbing hydrogen sulfide into an alkaline solution. In a fuel cell, electrical energy is produced from the alkaline sulfide solution resulting from the absorbing step. Thus, according to the present invention, the cost and efficiency problems occurring in conventional hydrogen sulfide removal processes are solved.
Claims12
A method of removing hydrogen sulfide, the method comprising:
- (a) absorbing hydrogen sulfide into an alkaline aqueous solution, thereby producing sulfide ion;
- and
- (b) electrochemically oxidizing the solution comprising the sulfide ion produced in the step (a), thereby producing sulfate ion.
A hydrogen sulfide removal system comprising:
- an H2S absorption unit comprising an alkaline aqueous solution for absorbing hydrogen sulfide to produce sulfide ion;
- and
- a fuel cell unit for oxidizing the solution comprising the sulfide ion produced in the absorption unit.
A method of removing hydrogen sulfide and generating electricity, the method comprising:
- (a) absorbing hydrogen sulfide into an alkaline aqueous solution to produce sulfide ion;
- and
- (b) feeding the solution comprising the sulfide ion produced in the step (a) into an anode of a fuel cell and producing sulfate ion thereby producing electrical energy.
Dependencies are inferred from the claim text.