As the first biomass gasification coupling power generation project in China using straw with high potassium and chlorine content as the main raw material

a 10.8 MW biomass gasification coupled coal-fired power plant has successfully realized large-scale industrial co-gasification of agricultural and forestry waste with unformed

complex and variable characteristics. In order to investigate the effects of different gasification temperatures on performance of the large-scale agricultural and forestry waste-based circulating fluidized bed gasification device

experiments with 50% rice husk-50% forestry waste as the fuel based on rated load were carried out in the power plant. It was found that

when the temperature rose from 700 ℃ to 750 ℃

the volume fraction of combustible components and low calorific value of wet gas produced by mixed biomass gasification both had an increasing-decreasing trend. The tar mass concentration in gasification gas increased slightly with the temperature. The gasification efficiency and gasification thermal efficiency increased

and the maximum gasification efficiency and gasification thermal efficiency reached 70.16% and 89.16% at 750 ℃. The research provides some data support for optimal operation of biomass co-gasification in large-scale industrial gasification device.