METHOD FOR GASIFYING PAPERMAKING SLUDGE AND USED PAPER WASTE AND MAKING HYDROGEN

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently gasifying organic waste of papermaking sludge, used paper or the like to produce a useful gas containing hydrogen.

SOLUTION: Papermaking sludge or used paper is brought into contact with supercritical water in the presence of an alkaline catalyst comprising a water soluble alkaline substance or a metal catalyst comprising a hydrogen activating metal to be decomposed and gasified. That is, a raw material mixture to be treated containing papermaking sludge, or used paper, water and the catalyst is heated to 500-800°C under a condition of 1.5-50 MPa.

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