论文部分内容阅读
本文阐述了煤粉空间燃烧的特点,并利用大同煤粉(6520大卡/公斤)、红山煤粉(4640大卡/公斤)、四塘煤粉(4275大卡/公斤)、合山煤粉(3309大卡/公斤)的燃烧试验作了对比分析。结果表明,低位发热量大于4000大卡/公斤的煤粉进行空间燃烧,能够达到锻造温度(大于1250℃),煤粉炉的各项技术性能也达到了各类加热炉通常采用的设计指标。对试验结果进行的计算,证明煤粉炉的高温系数高于其他类型加热炉一般所能达到的高温系数。因而认为,对同一种煤来说,煤粉空间燃烧能够比煤块层状燃烧或气化燃烧获得更高的炉温,为4000～5000大卡/公斤低热值煤用作锻造加热燃烧提供了一种有效途径,从而扩大了煤种使用范围。
This paper describes the characteristics of coal combustion in space, and uses Datong pulverized coal (6520 kcal / kg), Hongshan pulverized coal (4640 kcal / kg), Si Tong pulverized coal (4275 kcal / kg) Powder (3309 kcal / kg) combustion test made a comparative analysis. The results show that the pulverized coal with low calorific value greater than 4000 kcal / kg can be burnt in space and can reach the forging temperature (greater than 1250 ℃). The technical performance of pulverized coal furnace has also reached the design indexes commonly used in various types of furnaces. The calculation of the test results shows that the high temperature coefficient of pulverized coal furnace is higher than the high temperature coefficient that other types of furnace can generally achieve. Therefore, for the same kind of coal, the space combustion of pulverized coal can obtain a higher temperature than the stratified combustion or gasification combustion of coal lumps, and provides 4000-5000 kcal / kg low calorific value coal for forging heating combustion An effective way to expand the use of coal.