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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 8    August 2018

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Influence of blast furnace top gas composition and dust on HCl removal with low temperature Ca-based dechlorination agent
TENG Ai-jun(滕艾均)1, 3, HU Bin-sheng(胡宾生)2, GUI Yong-liang(贵永亮)2, XUE Xiang-xin(薛向欣)1, 3

1. School of Metallurgy, Northeastern University, Shenyang 110819, China;
2. North China University of Science and Technology, Tangshan 063009, China;
3. Key Laboratory of Liaoning Province for Recycling Science of Metallurgical Resources,
Shenyang 110819, China

Abstract:Using fixed-bed reaction method and changing the gas composition and dust content, the influence of blast furnace top gas composition and dust on HCl removal with low temperature Ca-based antichlor was studied. It was found that, when the content of CO2 in blast furnace top gas increased, the dechlorination efficiency was getting worse obviously; when the contents of CO and N2 increased, the dechlorination efficiency was getting better to a certain extent; when the content of H2 changed, the dechlorination efficiency got no significant change; as the content of dust increased, the dechlorination efficiency got better obviously when the content was less than 15 g/m3, but it would be got worse quickly when the content was more than 20 g/m3, and the best content was 15–20 g/m3; the suitable site of the process of dechlorination was after gravity dust collector and before bag dust collector.

 

Key words: blast furnace top gas; HCl gas; dechlorination; breakthrough time; penetration chlorine capacity

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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