The invention relates to a
tail gas washing device and a use method of the
tail gas washing device. According to the
tail gas washing device, a tail
gas pipeline is communicated with a liquid collector; the tail
gas pipeline is internally provided with a fluid ejection gun for ejecting circulation water; the liquid collector is communicated with an inclined plate
settling pond through a
differential pressure drain-pipes and drain valves; a
tar filter is arranged at the upper part of the inclined plate
settling pond; and a
clean water pond is arranged at the outlet of the
tar filter. According to the use method, primary cleaning water is filled into the
clean water pond, the tail gas is washed through the circulation water of the fluid ejection gun, the circulation water flows into the liquid collector, the circulation water is discharged through the different pressure drain-pipes, any drain valve is opened, the circulation water is discharged into the inclined plate
settling pond and flows to the other end of the water pond, dust is accumulated at a second
pollution discharge valve, and when the circulation water is discharged into the inclined plate settling pond and reaches a certain height, the
tar is blocked through the basket type filter, and the circulation water with dust removed and tar blocked flows into a clear
water reservoir, is pressurized through a fluid ejection gun pump, and is finally fed into the fluid ejection gun so as to realize cyclic utilization. The tail gas washing device is simple in process and easy to popularize and apply.