Coking coarse coal gas clean system

The utility model discloses a coking coarse coal gas clean system, including cyclone, heat exchanger, water washing device, pressure filter, desulphurization unit, memory, coking coarse coal trachea way is connected to cyclone air inlet one end, and cyclone passes through the gas outlet pipe connection heat exchanger, and the heat exchanger passes through the pipe connection water washing device, the water washing device includes air inlet, gas outlet, box, swash plate, blow off pipe, pipe connection desulphurization unit is passed through to the water washing device gas outlet, desulphurization unit includes air inlet, gas outlet, drain pipe, shower nozzle, packing layer, layer board, defroster, baffle, and drain pipe upper portion is equipped with a plurality of shower nozzles, the shower nozzle lower part is equipped with the packing layer, and the packing layer lower part is equipped with the layer board, and layer board one side is equipped with the baffle, and defroster upper portion is equipped with ac