Study on Characteristics of Synthesis Gas Generation During Catalytic Gasification of Municipal Solid Waste

Abstract This paper focuses on the effect of Ni-based reforming catalyst on tar decomposition, dealing with the relationship between the operating factors with synthesis gas composition. A series of catalytic gasification experiments of municipal solid waste were carried out under the range of 873-1023K, to evaluate the performance of three types Ni-catalyst on promoting H 2 and CO generation, particularly concerning with H 2 /CO ratio variation. Tar generation characteristics relating to operating elements were discussed, and catalytic promoter inhibiting H 2 S, SO 2 occurs was investigated. It indicated that Ni catalyst can effectively improve tar decomposition, promotes H 2 and CO generation. High temperature is favour for gasification and deep thermal crack, moreover improve the catalytic performance. Tar is finally converted into unsaturated hydrocarbons and oxy-organics. As catalyst promoter, alkaline metals, such as K, Ca, Zn presenting in Ni catalyst will significantly eliminate H 2 S, promote tar decomposition, furthermore, directly affect the H 2 and CO ratio. Alkaline metal additives contained Ni-based catalysts be suggested as a potential means for the efficient production of clean synthesis gas from municipal solid wastes.