Method for removing crystal substances in full flow tank of coal gas deamination system and flushing assembly

The invention discloses a method for removing crystals in a full flow tank of a coal gas deamination system and a flushing assembly. The full-flow tank crystal substance removing method of the coal gas deamination system provides a flushing assembly and a crystal extraction pump, and comprises the following steps: step S10, respectively inserting at least two flushing pipes in the flushing assembly into an inner cylinder and an outer cylinder of a full-flow tank; s20, cleaning liquid is introduced into the two washing pipes, the cleaning liquid is water or unsaturated mother liquor, the washing pipes are used for washing the cleaning liquid into the crystals in the inner cylinder and the outer cylinder, the acid concentration of the liquid in the inner cylinder and the outer cylinder is controlled to be 2.5%-3.5% in the washing process, and when the crystals in the inner cylinder and the outer cylinder are washed, the acid concentration of the liquid in the inner cylinder and the outer cylinder is controlled