Drawer module-type waste heat boiler with denitration function

The utility model discloses a drawer module-type waste heat boiler with a denitration function, which is applied to an oil refining device, a chemical device or a metallurgical device. The drawer module-type waste heat boiler comprises a steel frame and a heated surface module group; the heated surface module group comprises N functional modules which are sequentially arranged from top to bottom, each functional module is fixed on the steel frame by virtue of supporting legs on four corners of the bottom, every two adjacent functional modules are connected with each other by virtue of a flue, the N functional modules comprise at least two heated surface modules and at least one denitration module, the top surface of the heated surface module on the topmost end is connected with a smoke inlet, the bottom surface of the heated surface module on the bottommost end is connected with a smoke outlet to form a smoke passage; each heated surface module of the heated surface module group is connected to form at least one group of vapor passage by virtue of a technological pipeline. The drawer module-type waste heat boiler has the technical effects that the denitration module can be embedded into the waste heat boiler, so that the adsorption and denitration of nitric oxides in the smoke can be realized in the waste heat recovery process of the smoke, and simplicity and convenience in repairing can be realized.