Flue gas residual heat utilizing method for copper smelting furnace through dust remover with exhaust funnel

Abstract

The invention discloses a flue gas residual heat utilizing method for a copper smelting furnace through a dust remover with an exhaust funnel. The flue gas residual heat utilizing method is characterized in that flue gas of the copper smelting furnace is exhausted from the furnace, passes through a water cooling flue to be mixed with cold air and enters a burning settling chamber after carbon monoxide gas is combusted, the function of the burning settling chamber is that the flow speed of the flue gas is reduced to enable large-particle dust carried in the flue gas to be settled and cold air to be properly mixed, carbon monoxide gas is burnt out finally, flue gas exhausted from the burning settling chamber enters a heat storage temperature equaling device, and the heat storage temperatureequaling device comprises a carbon-silicon composite material heat storage body, a shock wave ash removing device and an ash bucket. The dust remover is provided with the exhaust funnel, clean gas isdirectly exhausted from a gas purifying bin of the dust remover, exhaust funnel steel consumption and civil engineering investment are reduced, the system occupied area is greatly reduced, the primaryinvestment cost of a dust removal system is reduced, the on-way resistance loss and local resistance loss of gas flow in redundant pipelines are reduced, finally, operation electricity consumption can be finally reduced, and the purpose of reducing the operation cost of the dust removal system is achieved.

Description

technical field [0001] The invention relates to a method for utilizing waste heat of copper smelting furnace flue gas with a dust collector equipped with an exhaust tube, specifically, it can maximize the recovery of heat energy in the flue gas and convert it into high-grade electric energy, and can improve the dust removal ability. Copper furnace waste heat utilization and dust removal technology 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 sticky and fine. Moreove...

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Problems solved by technology

[0005] When the dust collector and the exhaust cylinder are arranged separately, generally the fan is placed next to the dust collector, and the exhaust cylinder is placed next to the fan. The connecting pipelines have high investment costs, large floor space, high resistance and high power consumption.

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