Experiment on Rice Straw Gasification in a Two-Stage Gasifier

The technical features and innovative structure of the two-stage gasifier developed by Shanghai Jiao Tong University are introduced. Experiments of straw gasification have been taken on this gasifier. The effect of equivalence ratio (ER) on gasification performance is detected under a certain condition: feeding rate is around 100 kg/h, char bed height is kept about 100 cm high. Results show that: within the experimental condition, when ER is between 0.3 to 0.35, the heat value of product gas can reach as high as 7247.7 kj/m³, gas yield rate is 1.84 m³/kg, carbon conversion rate is 91.3%, the overall gasification efficiency is 84.6%.