Energy-saving dust removing method for smoke of metallurgical copper smelting furnace

Abstract

The invention discloses an energy-saving dust removing method for smoke of a metallurgical copper smelting furnace. The method is characterized in that the smoke of the copper smelting furnace is exhausted out of the furnace, is mixed into cold air through a water-cooling flue and enters a settling chamber after carbon monoxide gas is burnt, the smoke enters a heat storage temperature uniformizing device, a high-temperature heat pipe evaporator and a waste heat exchange chamber, heat is released, and the smoke enters a sinter-plate dust remover and is exhausted into the atmosphere by being pressed into an exhaust funnel through a main fan after dust removal; and meanwhile, circulating water absorbs heat of the smoke from a heat exchanger to form a steam-water mixture which enters an evaporator, heat is released, an organic liquid working medium absorbs heat of smoke waste heat carriers in a low-pressure stage evaporator and a high-pressure stage evaporator to become working medium steam which works in an organic turbine with a steam supplementary port in an expanding mode and drives a power generator to generate power, and R134a is adopted as the circulating organic working medium. According to the method, heat energy in the smoke can be recovered to the greatest extent and directly converted into high-grade electric energy, the dust removing capacity can be improved, and the good environment protection effect is achieved.

Description

technical field [0001] The invention relates to an energy-saving and dust-removing method for flue gas of a metallurgical copper-smelting furnace. Specifically, the heat energy in the flue gas can be recovered to the greatest extent and converted into high-grade electric energy, and the dust removal ability can be improved. It belongs to the waste heat utilization and dust-removal technology of a copper-smelting furnace field. Background technique [0002] The metallurgical industry consumes a large amount of energy every year, and the high-temperature flue gas generated during the smelting process and the heat dissipation of equipment take away a large amount of energy. Due to the high temperature of the flue gas from the copper smelting furnace, the temperature entering the pipeline is generally around 750°C, and the dust concentration reaches 15g / Nm 3 , the ash less than 5um accounts for more than 65% of the total amount of dust, the amount of dust is large, and it is st...

AI Technical Summary

Problems solved by technology

Moreover, the temperature of the flue gas fluctuates violently and the dust content is large. It is difficult for ordinary water tube waste heat boilers to be used for waste heat recovery of flue gas from copper smelting furnaces.

At present, the heat pipe heat exchanger has been successfully used in the waste heat recovery of the flue gas of the copper smelting furnace. The popularization of the steel industry still faces many problems

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