论文部分内容阅读
烧结墙体材料的高温制备过程是通过高温窑炉的烧结实现的,在烧结过程中,原料和燃料在高温下都会产生细小的颗粒物,其中绝大部分属于PM2.5粒子;针对目前广泛使用的高硫劣质煤在烧结墙体材料制备工艺中的PM2.5排放问题开展研究,比较了煤的种类、烧结气氛和温度变化对排放的影响规律,结果表明:在低氧气氛燃烧条件下,可以大大降低氮氧化物和硫氧化物的生成量;在温度选择方面,由于温度过高会产生较多的氮氧化物和碱性氢氧化物,它们会与空气中碱性物质反应生成PM2.5颗粒,所以选择900~950℃是较为合适的最高烧成温度。
The high temperature sintering process of the sintered wall material is achieved through the sintering of the high temperature furnace. During the sintering process, the raw materials and fuel will produce fine particles at high temperature, most of which belong to the PM2.5 particles. For the widely used The problem of PM2.5 emission in the process of sintering wall material was studied in this paper. The influence of coal type, sintering atmosphere and temperature on the emission was compared. The results show that under low oxygen atmosphere combustion condition, Greatly reduce the formation of nitrogen oxides and sulfur oxides; in the temperature selection, due to the temperature is too high will produce more nitrogen oxides and alkaline hydroxides, they will react with the air alkaline substances to produce PM2.5 Particles, so choose 900 ~ 950 ℃ is the more appropriate maximum firing temperature.