COMPOSITE CATALYST FOR PREPARING HYDROGEN BY SUPERCRITICAL WATER GASIFICATION OF LOW-MOISTURE-CONTENT DEHYDRATED SLUDGE AND APPLICATION OF COMPOSITE CATALYST

摘要

A composite catalyst for preparing hydrogen by supercritical water gasification of low-moisture-content dehydrated sludge and an application of the composite catalyst. The catalyst comprises the following raw materials in parts by mass: 50 to 75 parts of active nickel and 25 to 50 parts of a carbon fixation agent, wherein the carbon fixation agent is one of NaOH, KOH, Ca(OH)₂, CaO, CaSiO₃ and Na₂SiO₃. The catalyst can be used for catalyzing low-moisture-content dehydrated sludge at a relatively low reaction temperature to generate hydrogen, the catalytic efficiency is high, and the costs are saved.