Boiler that has useless flue gas heat reclamation device

The inner wall facing on the utility model relates to a boiler that has useless flue gas heat reclamation device has by outer to the interior nested outer polyurethane foam layer that sets up in order, and well converted steel layer high temperature resistant layer in with is equipped with axle clearance compensation ripple pipe at the middle part on well converted steel layer including, high temperature resistant layer is with ceramic heat preservation, establishes between outer polyurethane foam layer and the well converted steel layer to cooling off the grease cavity, and establish to the thermal medium fluid bed between high temperature resistant layer in and on well converted steel layer, and the bottom on polyurethane foam layer is equipped with the urgent passing away that is linked together with the thermal medium fluid bed outside the utility model discloses can safe efficient retrieve by the extravagant raw coke oven gas heat that falls, because the raw coke oven gas temperature declines to a great extent, can reduce about two-thirds's circulation aqueous ammonia volume, have economic value