DUST REMOVER FOR BLAST FURNACE GAS

摘要

PROBLEM TO BE SOLVED: To reduce a dust removal load of a wet type dust remover in a subsequent stage by improving efficiency of dust removal while downsizing a dust remover.SOLUTION: A dust remover 100 for blast furnace gas includes: a first tube body 104; a second tube body 106 provided in the first tube body while maintaining an annular air gap between the second tube body and the inner wall of the first tube body; a first swirling flow path 108 formed between the inner wall of the first tube body and the outer wall of the second tube body; a first swirling part 120 which introduces blast furnace gas from the outside of the first tube body to the first swirling flow path, and makes the blast furnace gas swirl in a circumferential direction of the first swirling flow path; a discharge pipe 20 in which an inlet port 20b for introducing the blast furnace gas therein is formed at one end part 20a, and in which the one end part is positioned in the second tube body while maintaining an annular air gap between the inner wall of the second tube body and the discharge pipe; an annular second swirling flow path 110 formed between the inner wall of the second tube body and the discharge pipe; and a second swirling part 136 which introduces the blast furnace gas swirling in the first swirling flow path from the first swirling flow path to the second tube body, and makes the blast furnace gas swirl in a circumferential direction of the second swirling flow path.