PLANT FOR THE FLUE GAS CLEANING Russian patent published in 1995 - IPC

FIELD: chemical engineering. SUBSTANCE: plant has gas-purifying apparatuses of the first and second stages of cleaning connected in series by means of gas-conduit and an exhaust fan. The apparatus of the first stage of cleaning is represented by the doubled cyclone. In this case the input branch pipe of the inner base cyclone is connected with the suction line, a hot-water heater, for example. The input branch pipe of the outer standby cyclone is connected with the pump line of the mixture of the exterior air-duct and of the returning of the finish captured product of the second stage in the form of a tubular filter with a carcass covered with the filtering material. The common exhaust pipe of the cyclones is connected with the sucking in side of the exhaust fan. Its forced side is connected with the branch pipe of the tubular filter input. The branch pipe of the filter output is connected with the transport line of the finish captured product and is locked with the feed line of the exterior air-duct from the separate exhaust fan. If necessary the plant can be equipped with an aspiration system for withdrawing the purified gases from the filter into the atmosphere. EFFECT: enhanced efficiency of the gas cleaning and simplified utilization of the captured product. 1 cl, 2 dwg