Device and method for dedusting and purifying tail gas of glass melting furnace

Abstract

The invention relates to a method for dedusting and purifying tail gas of a glass melting furnace. The method comprises the following steps: flue gas at 450-560 DEG C is introduced into a negative pressure header pipe (1) for cooling; the cooled flue gas at 120-400 DEG C enters a spray cooling tower (3), and the temperature of the flue gas at a gas outlet (3d) is reduced to 75-80 DEG C; then the flue gas enters a mixer (4) and a mixing pipe (5) to be mixed and reacted with calcium hydroxide from a negative pressure branch pipe (7), acidic pollutants and redundant water in the flue gas are absorbed, and the temperature of the flue gas is reduced to 65 DEG C or below; then the flue gas enters a bag-type dust collector (6), incompletely-reacted calcium hydroxide and acid gas in the flue gas continue to be subjected to a secondary reaction, and finally the flue gas is filtered by the bag-type dust collector (6) and introduced into a chimney (16) through a variable-frequency fan (14) to beemptied. The method has the advantages that the tail gas is filtered, reacted and dedusted layer by layer, so that the tail gas is emptied after reaching the standard, the deacidification efficiency is improved, materials are recycled, and the operation cost and the system pressure fluctuation are reduced.

Description

technical field [0001] The invention relates to the technical field of dust removal for tail gas of a glass melting furnace, in particular to a device and method for dust removal and purification of tail gas of a glass melting furnace. Background technique [0002] The glass industry is a major energy-consumer and polluter in the building materials industry. A large amount of smoke, dust and SO 2 , Dust production points mainly occur in the raw material processing and transportation process and the glass melting furnace smelting process, of which the glass melting furnace is the main source of pollution. [0003] Glass melting furnace flue gas contains SO 2 , is highly corrosive, and will combine with rainwater to form acid rain after it is discharged into the atmosphere. Therefore, if these major pollutants are not purified in a timely and effective manner, and they are directly discharged into the atmosphere, the earth's atmospheric environment, earth's soil, and even hum...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the existing glass melting furnace tail gas dust removal, and to provide a device for glass melting furnace tail gas dust removal and purification. Standard venting, improve deacidification efficiency, reduce operating costs and system pressure fluctuations

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