Dry dedusting, decoking, desulfurizing and defluorinating apparatus suitable for aluminum industry

Abstract

The invention provides a dry dedusting, decoking, desulfurizing and defluorinating apparatus suitable for the aluminum industry. The apparatus comprises a decoking unit, a desulfurization unit, a defluorination unit and a chimney which are sequentially serially connected, the decoking unit comprises a CaO powder nozzle arranged in a smoke pipeline, and the outlet of the smoke pipeline is connected with a pre-deduster; the desulfurization unit comprises a fluidized bed absorption tower, a mechanical deduster and a first cloth bag deduster, the bottom end of the fluidized bed absorption tower is provided with a Venturi device, the gas outlet of the pre-deduster is connected with the Venturi device, the fluidized bed absorption tower is connected with the mechanical deduster, and the first cloth bag deduster is connected with the mechanical deduster; and the defluorination unit comprises a defluorination device, a second cloth bag deduster and a second induced draught fan, and the gas outlet of the second cloth bag deduster is connected with the chimney through the second induced draught fan. The dry dedusting, decoking, desulfurizing and defluorinating apparatus suitable for the aluminum industry has the advantages of scientific design, realization of one-shot treatment of dry dedusting, decoking, desulfurizing and defluorinating, good treatment effect, and recycling of an intermediate.

Description

technical field [0001] The invention relates to a flue gas treatment device, in particular to a new flue gas treatment device suitable for the aluminum industry, an electrolytic aluminum workshop and a roasting workshop of a carbon branch factory. Background technique [0002] With the improvement of domestic industrial and mining enterprises, especially the flue gas emission requirements of the aluminum industry, the existing extensive processing equipment has been unable to adapt to the new standards. Although some large-scale processing equipment can meet the standards, their scale is too large. For small manufacturers, the cost is too high and the burden is too heavy, and most of the existing equipment can only play a separate processing role, operate independently, and have no cooperative relationship with each other, and some intermediate products are wasted, which is a pity. [0003] In order to solve the above problems, people have been looking for an ideal technical...

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Problems solved by technology

[0002] With the improvement of domestic requirements for industrial and mining enterprises, especially the flue gas emission of the aluminum industry, the existing extensive processing equipment has been unable to meet the new standards, and some large-scale processing equipment can meet the standards, but the scale is too large. For some For small manufacturers, the cost is too high, the burden is too heavy, and most of the existing equipment can only play a separate processing role, independent operation, no cooperation between each other, some intermediate products are wasted, which is a pity

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