可燃固废复合燃料的燃烧性能试验研究

焚烧法具有显著的减容、资源化和能量回收等优点,是生活垃圾处理的有效途径。原生垃圾成分复杂、含水率高、热值低,直接焚烧处理的热稳定性差。将生活垃圾、市政污泥及适量的辅料,采用正交表配料制备可燃固废复合燃料。通过燃烧热稳定性、热值试验的极差分析和方差分析检验燃料的燃烧性能,得出原料配比、园林残余及固硫剂对燃料燃烧特性有显著的影响;运用数量化理论分析,得到热稳定性、热值指标的预测方程,置信度>90%;最后采用综合评分法筛选出燃烧性能最优的燃料制备配方为:垃圾、市政污泥、煤粉以2:1:1比例混合,助燃剂MnO2添加量为0.19%,固硫剂CaO添加量为0.6%时,制备的燃料燃烧热值为18.702kJ/g,燃烧热稳定性(TS+6)达74.79%。

Combustion Characteristics Test of Combustible Solid Compound Fuel

Disposing of municipal solid waste(MSW)by incinerations is an effective way with the advantages of remarkable volume reduction,resource and energy recovery. Due to the complicated,high moisture content and low calorific value of MSW as well as poor thermal stability by direct incineration,combustible solid compound fuels were prepared using orthogonal ingredients of which were comprised of MSW,municipal sludge and appropriate amount of auxiliary components. Through the range analysis and variance analysis of combustion stability and calorific value, the fuel combustion characteristics were tested. Results showed that the ratio of raw materials,trash and desulfurization agent for fuel combustion characteristics have a significant impact. The forecast equation,more than 90% confidence level,can be obtained using mathematical statistical method. The optimal combination can be found in light of comprehensive scoring of MSW,municipal sludge and pulverized coal at 2: 1: 1,accelerant agent MnO2 0.19%,desulfurization agent CaO 0.6% for the preparation of fuel,with calorific value up to 18.702kJ/g and thermal stability(TS+6)up to 74.79%.