| abstract |
The invention discloses a kind of blast furnace gas dry desulphurization system and methods, including along the sequentially connected preposition powder desulfurizer of desulfurization route, dry method refined dedusting device, organic sulfur conversion tower and second level dry desulfurization device, organic sulfur conversion tower and second level dry desulfurization device form two-grade desulfurizing unit, it further include sulfur content detection device and coal gas bypass, coal gas bypass is in parallel with two-grade desulfurizing unit, adjusting valve group is provided in coal gas bypass, the outlet of coal gas bypass and the outlet of two-grade desulfurizing unit converge.The present invention, desulfurization is divided into preposition desulfurization and two-grade desulfurizing two stage arrangement, and two-grade desulfurizing is parallel with bypass, can adapt to the variable parameter operation and security of system of the variation of blast furnace gas sulfur-bearing, further decreases operating cost. |