Phase separation tank cleaning device and method

The invention discloses a phase separation tank cleaning device and method. The cleaning device comprises a phase separation tank, wherein a partition board is arranged in a phase separation tank body; a steam pipe and a chemical liquid pipe are arranged at an inlet of the phase separation tank respectively; one end of the steam pipe penetrates through one end of the partition board and enters space formed by the phase separation tank body and the partition board, and the other end of the steam pipe is connected with a medium pressure steam device; one end of the chemical liquid pipe penetrates through the other end of the partition board and enters the space formed by the phase separation tank body and the partition board, and the other end of the chemical liquid pipe is connected with an acid preparation tank; a dirty liquid discharge port is formed in the lower part of the wall of the phase separation tank body. On the basis of the device for cleaning, firstly, diluted fluosilicic acid with the raw material mass concentration being 10%-12% is introduced for acid preparation, and a cleaning chemical liquid is obtained; when the phase separation tank is required to be cleaned, the chemical liquid is injected into the phase separation tank through the chemical liquid pipe, medium pressure steam is sent to the phase separation tank through the steam pipe, so that the chemical liquid rolls continuously for 5-10 min, and then a dirty liquid is discharged. According to the device and the method, the phase separation tank is not required to be dismounted, manual cleaning is not required, and time and labor are saved.