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Experimental Investigation On The Conversion Of Agricultural Waste To Bio-Gas

Hong Jiang, Qing-xiang Guo

Agricultural waste such as rice husk and sawdust can be gasified to produce bio-gas which can be used as fuel or used to synthesize liquid fuel. In this work, gasification efficieny of agricultural waste with different equivalent ratio (ER) is experimentally investigated in a self-heated fluidized gasifier. The higher heat value (HHV) of bio-gas is more than 3.90MJ/Nm3, and the energy conversion is more than 40% with an optimum ER. Energy conversion increased with the decreasing of ER. The energy input and output in the gasification system are calculated considering their commercial usage. The power input was 9.5kW, whereas the theoretic power output was more than 30kW. The tar waste water was treated by extraction.