Flue gas reheating device utilizing flue gas denitration waste heat of grate-fired furnace

The utility model discloses a flue gas reheating device utilizing flue gas denitration waste heat of a grate-fired furnace. The device comprises a body and a heat collecting mechanism. Assembling mechanisms are mounted at the left end and the right end of the main body; an air chamber is formed in the middle of the main body; a central partition plate is fixed to the middle of the air chamber, theheat collecting mechanism is located on the inner side of the air chamber, heat outlets are formed in the periphery of the body, air ports are formed in the upper end and the lower end of the body, sealing grooves are formed in the inner sides of the air ports in a penetrating mode, sealing plates are installed in the middles of the sealing grooves, and linkage ports are formed in the tops of thesealing plates in a penetrating mode. According to the flue gas denitration waste heat utilization flue gas reheating device for the grate-fired furnace, liquid conduction or gas transmission can becompleted through the two h