Sludge marsh gas generating set-steam boiler energy efficient compensation and utilization integrated device

The utility model provides a sludge marsh gas generating set-steam boiler energy efficient compensation and utilization integrated device. According to the technology, the device involves the main implementation processes that a marsh gas generating set receives marsh generated in anaerobic sludge digestion and then generates power and waste heat, smoke waste heat directly flows to a front smoke box of a steam boiler and enters a third return smoke tube, circulating cooling water waste heat is exchanged with heat exchange water, part of circulating cooling water serves as a supplement source for output and pollution discharge of the steam boiler, and the two parts of waste heat and burning heat of a marsh boiler body stably supply high-temperature steam required for sludge hydrolysis. The device is wide in application range, flexible in operation, safe, reliable, low in energy consumption and high in yield, the utilization rate of marsh energy in a system reaches more than 70%, the marsh energy is converted into steam and power, and the comprehensive utilization rate of the marsh energy is over 90%.