Experimental study on high equivalence ratio biomass oxygen gasification

Straw densification briquetting fuel gasification under oxygen was carried out in a downdraft gasifier. The effects of high equivalence ratio (0.31-0.40) on results of gasification are investigated through a series of experiments, which change equivalence ratio via adjusting the feeding rate of oxygen. With the increasing of equivalence ratio, it is found that reaction temperature, carbon conversion and gas productivity are all increased but low heating value and tar content. The experimental results showed that the way of high equivalence ratio biomss oxygen gasification is feasible and the method of increasing equivalence ratio to raise reaction temperature can reduce the tar content significantly in producer gas.