Processing method of gasification furnace quenching ring

A processing method of a gasification furnace quenching ring. The invention relates to the processing method of a coal water slurry gasification furnace quenching ring. The processing method includes the steps of: (A) firstly producing an outer ring tube (5), a chamber base (1), a water distribution inner ring (3) and a cylinder body (7) and fixedly connecting the chamber base (1), the water distribution inner ring (3) and the cylinder body (7), wherein a plurality of water distribution holes (8) are formed in the chamber base (1) above the water distribution inner ring (3); (B) spray-coating a hard alloy material onto the inner surface of the outer ring tube (5), the outer surface of the water distribution inner ring (3), and a water outlet on the water distribution inner ring (3) to form spray coating layers; (C) cutting the outer ring tube (5) into at least three parts; and (D) sleeving the water distribution inner ring (3) by the outer ring tube (5) on the inner side in the radial direction and welding the outer ring tube (5) to the inner ring on the chamber base (1). The method improves anti-erosion property and increases service life of the quenching ring, reduces shut down times, overcomes waste of loss of raw materials due to shut down maintenance and change of a new quenching ring in the prior art.