Device for denitration of cement kiln tail low temperature flue gas SCR

The utility model discloses a cement kiln tail low temperature flue gas SCR denitrification facility, including cement kiln tail dust collector, reductant supply system, reductant injection apparatus, low temperature denitrification facility, catalyst, cement kiln tail exhaust fan and chimney. Denitrification facility arranges after cement kiln tail dust collector, purification flue gas after kiln tail dust collector gathers dust, with the supply of reductant supply system, arrange before low temperature denitrification facility the reductant injection apparatus on the flue spray to the flue in the reductant together, get into behind the misce bene the medium temperature denitrification facility who is equipped with the catalyst carry on discharging after the denitration go into preoral flue to cement kiln tail exhaust fan on, the final purification flue gas gets into kiln tail chimney and discharges the utility model discloses the high cloud of dust gas of cement kiln tail successively gathers dust through kiln tail dust collector and handles the back, and the flue-gas temperature is low, and the dust content is very low, gets into effectually to avoid behind the low temperature denitrification facility smoke and dust to the washing away of catalyst wearing and tearing and stopping up this moment