Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-11-29
2005-11-29
Silverman, Stanley S. (Department: 1754)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C423S648100, C423S652000, C423S655000, C429S010000, C429S006000
Reexamination Certificate
active
06969562
ABSTRACT:
A hydrogen-containing gas suitable for use in a fuel cell, especially in a proton exchange membrane fuel cell, is produced from a digestion gas (b) yielded in methane fermentation of organic matter (a), and is then supplied to the fuel cell to generate electricity. A fuel cell power generation method comprises a methane fermentation step (A) for subjecting organic matter to methane fermentation, a pretreatment step (B) for pretreating digestion gas yielded in the methane fermentation step, a hydrogen production step (C) for producing hydrogen-containing gas (c) from the gas which has been pretreated in the pretreatment step, and a fuel cell power generation step (D) for supplying the hydrogen-containing gas produced in the hydrogen production step to a fuel cell to generate electricity. The pretreatment step comprises an alkaline absorption step (B1) for absorbing carbon dioxide or carbon dioxide and hydrogen sulfide contained in the digestion gas yielded in the methane fermentation step into an alkaline absorbent solution.
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Kinoshita Kazuo
Su Qingquan
Tanaka Yasuo
Togo Tomohiro
Ebara Corporation
Medina Maribel
Silverman Stanley S.
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