秸秆成型燃料双胆反烧炉的设计

Design of A Double-Flue Boiler for Reversely Burning Straw Briquettes

根据秸秆成型燃料的单颗粒燃烧试验,分析了秸秆成型燃料的燃烧速度、燃烧机理和燃烧动力学特性,总结了秸秆成型燃料的燃烧规律,并根据秸秆成型燃料燃烧特性,研制出适合于生物质秸秆成型燃料燃烧的双胆反烧锅炉.该锅炉采用双层炉排反烧结构,可使成型燃料连续稳定燃烧,同时基本上解决了秸秆燃烧的结渣、飘尘问题.试验结果表明:该锅炉燃烧效率高达99.23%～91.75%,而且烟气中的烟尘含量,氮氧化物及二氧化硫含量远低于国家锅炉的污染物排放标准要求.

Based on single straw briquette combustion tests, the briquette＇ s firig speed, firing mechanism and its dynamic conbustion characteristics are being analyzed and the relevant governing laws summarized. A double-flue reversely straw briquette firing boiler has accordingly been developed. The reversely firing double layered grid construction allows continuous firing of bricks, at the same time basically solving the problems of slagging and drifting of fly ash. Test results show that combustio efficiency of the boiler can reach 99.23 % -91.75 % with ash , NOx and SO2 content much below requirements, specified by relevant national pollutant emission standards. Fig 1, tables 6 and refs 10.