Effect of lime pretreatment and dry digestion on pyrolysis characteristics of rice straw
石灰预处理和干发酵对稻草热解特性影响

It was help to understand pyrolysis mechanism that biomass pyrolysis would be deeply studied. The change in pyrolysis characteristics of rice straw from lime pretreatment and dry digestion was discussed by using thermo-gravimetric analyzer. The results showed that lime pretreatment increased the relative content of lignin and hemicellulose. whereas dry digestion reduced the relative content of VS, cellulose and hemicellulose. The lime pretreatment and dry digestion changed pyrolysis characteristics of rice straw, but pyrolysis mechanism would not change at treated phase. The part of main weight loss was well modeled by the first-order kinetic equation, and the kinetic parameters of pyrolysis of rice straw was belonged to the usual range reported by literatures. The increase in activate energy appeared at pretreatment phase, whereas the decrease in activate energy occurred at digestion phase. This study provided useful parameters for the design of pyrolysis reactor for straw and its fermented residues combustion.