The invention provides a dust removal /
hydrolysis integrated desulfurization
system for
blast furnace gas, belonging to the technical field of fine desulfurization of
blast furnace gas. The
system comprises a dust removal /
hydrolysis integrated
system and a desulfurization system, wherein the dust removal /
hydrolysis integrated system is formed by connecting a plurality of dust removal / hydrolysis
integrated devices in parallel, and
cut-off valves are arranged between the devices and a main
gas pipeline. According to the invention,
blast furnace gas firstly enters the dust removal / hydrolysis
integrated devices through a raw gas
pipe network, and raw gas enters from the lower parts of the devices; firstly, dust in the gas is captured through cloth bags, the captured dust is conveyed to ash bins, and the gas having been subjected to dust removal is converted into
hydrogen sulfide through hydrolysis catalyst
bed layers; the
blast furnace gas having undergone dust removal and hydrolysis entersa desulfurization
tower of the desulfurization system; and purified clean gas is converged into a clean gas main
pipe network. According to the invention, dust removal of the gas and
catalytic hydrolysis of carboxyl
sulfur in the gas are combined into the same device, and a gas hydrolysis reactor does not need to be independently arranged, so the occupied area of the gas desulfurization system isreduced, system investment is reduced, and cost is saved.