Tar residue recycling system and recycling method

The invention relates to the technical field of tar residue recovery devices in the coal gas-water separation process, and discloses a tar residue recycling system and recycling method. A three-phasecentrifugal machine, a double-screw mixer, a briquette ball press machine and a fixed bed gasifier are sequentially installed on the ground from front to back. A first conveying belt is installed among a first receiving hopper, a second receiving hopper and the double-screw mixer, a second conveying belt is installed between the double-screw mixer and the briquette ball press machine, and a thirdconveying belt enabling materials to enter a coal feeding system is arranged at a discharging end of the briquette ball press machine. According to the invention, through full mixing of tar residue and pulverized coal, the tar residue and pulverized coal reach a mixing ratio suitable for molding, then the briquette ball press machine is utilized to prepare briquette, and finally the briquette andlump coal are returned to t