环模压块机成型工艺参数与水稻秸秆压块热值的相关性试验

Correlation experiment between molding process of annular mould briquetting machine and calorific value of rice straw briquette

基于立式环模压块机9JYK-2000A的压缩成型工艺,对水稻秸秆压块低位热值的优化进行了方案设计和结果分析.以主轴转速、成型温度和含水率为影响因子,成型压块的低位热值为试验指标,进行二次正交旋转组合试验.根据试验结果,建立了成型工艺参数与压块低位热值之间的定量关系模型,且对所建模型进行试验性验证,误差范围小于5%,可被用于后续的优化模型.结合回归分析法和响应面分析法,在Design-Expert8.0.6软件中对数据进行分析以及优化方案的设计,结果表明:立式环模压块机各成型工艺参数对秸秆压块低位热值的影响顺序依次是主轴转速、成型温度、含水率,且水稻秸秆压块最佳低位热值的模型指标为主轴转速175 r·min-1,温度138℃,含水率14.33%,可达最佳低位热值11 711 k J.

Based on the compression molding process of annular mould briquetting machine of 9JYK-2000 A,scheme design and result analysis of the optimal experiment were realized for calorific value of rice straw briquetting. The quadratic orthogonal rotation combination experiment was designed with spindle speed,molding temperature and moisture content as influence factors,and the low calorific value of rice straw briquette press was used as test index. According to the experimental results,the quantitative model was established to analyze the relationship between forming factors of annular mould briquetting machine and low calorific value of rice straw briquette. The model was verified by experiment with error range less than 5% to show that the quantitative model could be used for subsequent optimization. Combined with regression analysis method and response surface analysis in the software of Design-Expert8. 0. 6,the data was analyzed and optimized. The experimental results show that the influencing sequence of forming factors of annular mould briquetting machine on the low calorific value of rice straw briquettingis followed by spindle speed,molding temperature and moisture content. The optimal indicators for forming process are obtained with spindle speed of 175 r·min-1,temperature of 138 ℃ and moisture content of 14. 33% to achieve the best low calorific value of 11 711 k J.