Engine-boiler integrated tube nest type combustion engine and device thereof for recovering three wastes

The invention discloses an engine-boiler integrated tube nest type combustion engine and a device thereof for recovering the three wastes. The combustion engine is composed of a hearth in a membrane type wall structure, an air supply chamber and a plenum chamber, wherein the air supply chamber is provided with an air inlet pipe; the plenum chamber is provided with a fuel gas inlet pipe; the inner wall of the air supply chamber is provided with a certain quantity of air pipes which are communicated to the heath in a membrane type wall structure; and the inner wall of the plenum chamber is provided with a certain quantity of gas pipes which are communicated to the hearth in a membrane type wall structure. The device for recovering the three wastes comprises a mixed combustion furnace, a separator and a waste heat boiler, wherein the lower part of the mixed combustion furnace is an ignition section, the middle part thereof is a boiling combustion section, and the upper part thereof is a cylinder; the upper end of the mixed combustion furnace is a coal slime inlet, the boiling combustion section main body of the mixed combustion furnace is the engine-boiler integrated tube nest type combustion engine, and the boiling section is internally provided with a boiling bed; and a solid waste inlet pipe and a refeed line are arranged at the outer sides of the heath at the boiling combustion section respectively, and a high-abrasive material layer is arranged at the inner side of the heath at the boiling combustion section. The invention has the characteristics of high heat efficiency, full combustion and stable operation.