Tar processing and reburning device for household straw gasifier

The invention provides a tar processing and reburning device for a household straw gasifier. A gas outlet of the gasifier is connected with inlet ends of first-stage cooling gas pipes, the first-stage cooling gas pipes are arranged in a cooling water tank in parallel, the other ports of the first-stage cooling gas pipes are arranged outside the cooling water tank and locked by using a locking cover, the multiple first-stage cooling gas pipes in the cooling water tank are communicated mutually, and the first-stage cooling gas pipes at the lower part of the cooling water tank are communicated with a tar backflow tank; outlets of the first-stage cooling gas pipes are communicated with a gas inlet of a second-stage cooling gas pipe, an air cooling pipe is sleeved at the periphery of the second-stage cooling gas pipe in a clearance way, and a fan is communicated with the upper part of the air cooling pipe; and an outlet of the second-stage cooling gas pipe is communicated with a pipe whichcommunicates a tar filter and a tar backflow tank. According to the invention, a clear production system with self closed cycle is formed, the improvement of the rural environment can be promoted, and a broader new pathway can be provided for creating energy-efficient and environmentally-friendly rural areas.