喷吹煤粉中氯元素在高炉风口区域的反应

对煤粉中氯元素在高炉内反应进行了热力学分析，模拟高炉风口环境，研究了喷吹煤粉中的氯元素在风口区的反应和分配规律.结果表明，煤粉中氯在燃烧过程中以HCl形式析出.与常规燃烧过程不同，煤粉中氯元素在风口区的析出率仅为40%~60%，剩余的氯元素残留在未燃煤粉中.喷吹煤粉带入高炉的氯元素不论去向如何，均不利于高炉冶炼过程的顺利进行.建立生产现场煤粉氯含量检测制度，减少高炉煤气中氯元素的危害，提高炉渣的排氯能力是今后努力的方向.

Reaction of Chlorine in Pulverized Coal Injection at BF Tuyere Zone

The reaction thermodynamics analysis of chlorine in coal was carried out in BF， and the distribution and reaction rules of chlorine at the tuyere were researched by simulating the situation of BF tuyere. The results showed that chlorine release as HCl from coal during the combustion. The evolution rate of chlorine in BF tuyere zone is only about 40%~60%， which is different from other common combustion process. The residual chlorine element still remains in the unburned coal powders. Wherever the chlorine of pulverized coal injection into blast furnace to go， they are not conducive to the smooth progress of blast furnace smelting process. Establishing detection system of chloride content on pulverized coal production site， reducing damage by chlorine element blast of furnace gas， improving the ability of the slag ruled out chloride are the future direction.