Single of net gas furnance cooling station(coal) process: from the gas furnance heat generated Rough gas(temperature) of 500~600^oC was the first to reach double vertical tube heat circulating water cooling washing, gas in thedust with some thermal cycling Double bottom ducts and risers form the Water Seal in drained by the two cooling ducts and risers after washing the gas temperature is about 80~90^oC, the isolation Water Seal entered 1 level electrical filter for tar and dust, gas temperature cooling to 70^oC, scrubbing towers once again entered the cooling and washing dust, gas temperature cooling 30~45^oC. The isolation Water Seal to enter the Class 11 electrical further removing the oil filter dust. Through pressurized gas compression machine, a further drop by catching water off after transmission throuth pipelines to users.