关键词: 水稻秸秆；冷压成型；响应曲面；参数优化

Abstract:

In order to produce high quality and low power consumption biomass particles, the relationship between particle characteristics and molding parameters should be studied in depth. Using loose density as judgment criteria,  rice straw cold-press forming experiment was carried out to investigate the effect of compressive forces, particle size and moisture content on quality of molding fuel. On the basis of single factor test, this paper established  a mathematical model by response surface method with Design Expert 8.0, and analyzed the effect of 3 factors on loose density. The optimum technological parameters for rice straw cold press molding  were: 168 MPa compressive forces,  21% moisture content, and 0~0.2 mm particle size. Under this condition, the loose density could reach 1.327 g/cm3.

Key words: rice straw, cold press molding, response surface, parameter optimization