煤质燃料在烧结制备墙体材料中PM2.5形成机理分析
发布时间：2018-12-07 12:41
【摘要】：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。
[Abstract]:The preparation process of sintered wall materials at high temperature is realized by sintering in high temperature kiln. In the sintering process, fine particles are produced from raw materials and fuels at high temperature, most of which belong to PM2.5 particles. In this paper, the problem of PM2.5 emission of high-sulfur and low-quality coal in the preparation process of sintered wall materials is studied, and the effects of coal types, sintering atmosphere and temperature on the emission are compared. The results show that the amount of nitrogen oxide and sulfur oxide can be greatly reduced under the condition of low oxygen atmosphere combustion. In the aspect of temperature selection, because more nitrogen oxides and basic hydroxides can be produced when the temperature is too high, they react with alkaline substances in air to form PM2.5 particles, so the optimum sintering temperature is 900 鈩，
本文编号：2367222
[Abstract]:The preparation process of sintered wall materials at high temperature is realized by sintering in high temperature kiln. In the sintering process, fine particles are produced from raw materials and fuels at high temperature, most of which belong to PM2.5 particles. In this paper, the problem of PM2.5 emission of high-sulfur and low-quality coal in the preparation process of sintered wall materials is studied, and the effects of coal types, sintering atmosphere and temperature on the emission are compared. The results show that the amount of nitrogen oxide and sulfur oxide can be greatly reduced under the condition of low oxygen atmosphere combustion. In the aspect of temperature selection, because more nitrogen oxides and basic hydroxides can be produced when the temperature is too high, they react with alkaline substances in air to form PM2.5 particles, so the optimum sintering temperature is 900 鈩，
本文编号：2367222
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