Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (6): 836-839.DOI: -

• Materials & Metallurgy • Previous Articles     Next Articles

Reaction of Chlorine in Pulverized Coal Injection at BF Tuyere Zone

LIU Xiaojie1, LYU Qing2, JIANG Haibin2, ZHANG Shuhui2   

  1. 1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China; 2. College of Metallurgy & Energy, Hebei Key Laboratory for Advanced Metallurgy Technology, Hebei United University, Tangshan 063009, China.
  • Received:2012-12-14 Revised:2012-12-14 Online:2013-06-15 Published:2013-12-31
  • Contact: LYU Qing
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Abstract: 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.

Key words: pulverized coal injection, BF tuyere, chloride, reaction, thermodynamic analysis

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