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Sectional absorption ammonia desulfurization process and device

A desulfurization device and desulfurization process technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., to achieve the effects of simple process, long-term operation, and land saving

Active Publication Date: 2012-10-03
WUHAN KAIDI ELECTRIC POWER ENVIRONMENTAL
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to overcome the above-mentioned shortcomings of the double-tower, multi-tower and traditional single-tower technologies in the traditional process, and to provide a segmented absorption ammonia desulfurization process and device, which can realize desulfurization, oxidation and desulfurization in the same tower. Crystallization, complex process, not easy to block, ensuring long-term operation of the equipment; not only can effectively remove sulfur dioxide, but also effectively remove ammonium sulfate dust particles generated during the desulfurization process

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  • Sectional absorption ammonia desulfurization process and device

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Embodiment 1

[0024] A stepwise absorption ammonia desulfurization device implemented according to the present invention includes an absorption tower 2, which is characterized in that: above the middle of the absorption tower 2, a spray layer 3, a packing layer 5, and a mist removal washing layer are arranged in the tower from bottom to top. The spray layer 3 is provided with one or several layers according to the level of sulfur dioxide content in the flue gas, and each spray layer 3 is provided with a spray slurry circulating pump 10 outside the tower; packing layer 5 and spray layer An inclined plate collector 4 (liquid collector) is set between 3, a trough distributor 6 (liquid distributor) is set between the packing layer 5 and the defogging flushing layer, and the liquid distributor is connected to the packing spray pump 12 outside the tower , The liquid collector is connected to the packing spray box 11, and the packing spray box 11 is connected to the packing spray pump 12; the demist...

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Abstract

The invention relates to a sectional absorption ammonia desulfurization process and device. Desulfurization, oxidation and crystallization can be realized in a same absorption tower, and different structures and different absorbents are adopted in different absorption section layers, so that crystallization, absorption, dust removal and oxidation can be respectively performed in the corresponding sections; sulfur-containing smoke gas can enter from an inlet at the middle part of the absorption tower, sequentially upwards flow back and pass through a spraying layer, a packing layer and a defogging and washing layer, sulfur dioxide in the smoke gas can be removed, and the smoke gas can leave the absorption tower for exhaust after dust removal and defogging; the process flow is complex, the blockage is difficult to occur and long-period operation of equipment can be ensured; and the sulfur dioxide can be effectively removed, and ammonia sulfate dust particles generated during the desulfurization process can be simultaneously effectively removed.

Description

technical field [0001] The invention relates to a desulfurization process and device using the segmented absorption ammonia method, in particular to the flue gas ammonia desulfurization technology, which can be applied to the technical fields of electric power, metallurgy, environmental protection and chemical industry. Background technique [0002] The ammonia desulfurization technology, which uses ammonia as a raw material to remove sulfide in flue gas, has been widely used in flue gas desulfurization projects in the fields of electric power, metallurgy and chemical industry. [0003] At present, the ammonia desulfurization technology has a variety of technologies such as single tower, double tower, and multiple towers. Among them, the double tower ammonia desulfurization technology was first used in actual desulfurization projects. The characteristic of this technology is that desulfurization and crystallization are carried out in two towers respectively. , The flue gas f...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/50B01D47/06
Inventor 赵红韩长民严学安张轶许芳静
Owner WUHAN KAIDI ELECTRIC POWER ENVIRONMENTAL
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