工业废渣在煤燃烧中固硫的影响因素分析

采用正交试验法，研究了4种因素对煤高温燃烧固硫效率的影响，发现原煤硫分影响最显著，钙硫比影响十分显著，石灰石与电石渣的成分配比影响较显著，而钢渣以及各因子间的交互作用影响甚微.通过方差统计得到一组最佳实验条件：原煤硫分为4%，钙硫比为2，石灰石与电石渣的质量配比为60∶40，钢渣添加量为0.6%，在炉温1 200 ℃下得到52%的燃煤固硫率.

Influence factors on sulfation reactions of industrial wastes in coal combustion

Four influence factors on sulfation reactions of industrial wastes in coal combustion were studied by a series of orthogonal experiments It is found that the initial sulfur content in coal （S t，ad) is the most prominent influence factor and the next is the molar ratio of calcium to sulfur （Ca/S). The weight ratio of limestone to carbide lime in the sorbent （L/C) takes the third place，while the addition percentage of steel residue （P sr) and the interactions of different factors have small influences The best experimental condition is as the flowing： w（S t，ad)=4%，n（Ca)/n（S)=2，n（L)/n（C)=60∶40， w（P sr)=0.6% The highest sulfur retention efficiency of 52% was obtained in coal combustion at the furnace temperature of 1 200 ℃