一、前言工业锅炉的热效率如何,对能源消耗量有较大影响。燃用可燃性差的无烟煤,工业锅炉的热效率大都低于50%,较高的也只有67-70%,有的机械不完全燃烧热损失高达39.8%,约占全部热损失的2/3。对几十种动力用煤燃烧特性试验的结果表明:挥发分很低(V~r=2-5%)、固定碳含量较高(C~r=85-95%)、含氢量较低(H~r=1-2%)的福建无烟煤的着火温度约为扎赉诺尔褐煤的两倍以上,比淮南烟煤高100多度,比焦作无烟煤高几十度。从煤的燃烧分布曲线看,福建省的无烟煤的反应性能较弱、可燃质份额低、可反应表面积小,淮南烟煤、焦作无烟煤的 I. Introduction The thermal efficiency of industrial boilers has a greater impact on energy consumption. Combustion of anthracite with poor flammability, most of the thermal efficiency of industrial boilers less than 50%, 67-70% higher, and some mechanical incomplete combustion heat loss up to 39.8%, accounting for about 2/3 of the total heat loss. The test results of the combustion characteristics of dozens of dynamic coal show that the volatile content is very low (V r = 2-5%), the fixed carbon content is high (C r = 85-95%), and the hydrogen content is low (H ~ r = 1-2%) of the Fujian anthracite ignition temperature is about Zharanuoer lignite more than 100 times higher than the bituminous coal in Huainan, higher than Jiaozuo anthracite dozens of degrees. From the coal combustion distribution curve, Fujian anthracite coal reaction performance is weak, low combustible material, the reaction surface area is small, Huainan bituminous coal, anthracite Jiaozuo