Tar residue harmless treatment system

The utility model provides a tar residue innocent treatment system which is characterized by comprising a liquefaction tank provided with a feed port and a discharge port, the outer wall of the liquefaction tank is provided with a jacket, the feed port of the liquefaction tank is connected with a tar conveying pipe and a tar residue conveyor, and the discharge port of the liquefaction tank is connected with an inlet of a grinding machine; a jacket on the outer wall of the liquefying tank is respectively communicated with an ammonia water input pipe, an ammonia water output pipe, a steam input pipe and a condensate water output pipe, the condensate water output pipe is connected with a cooling water system, and the ammonia water output pipe is connected with an ammonia water system; a solid outlet of the centrifugal separator is connected with the slag hopper through the screening machine, a liquid outlet is connected with the separated liquid collecting system, and a gas outlet is connected with the gas colle