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.
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