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Flue gas dust removal and desulfurization tower and dust removal and desulfurization process

A desulfurization tower and flue gas technology, applied in the direction of gas treatment, separation method, dispersed particle separation, etc., can solve the problems of ground dust rain, strong visual impact, white smoke, etc.

Active Publication Date: 2020-02-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing wet desulfurization devices are difficult to meet the requirements of emission standards
[0006] With the large-scale promotion and application of wet desulfurization technology in my country, an obvious and insurmountable shortcoming of wet desulfurization technology has gradually emerged. The "white smoke long dragon" brings a strong visual impact to people, and sometimes there will be "dust rain" phenomenon on the ground

Method used

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  • Flue gas dust removal and desulfurization tower and dust removal and desulfurization process

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Embodiment

[0084] A flue gas dedusting and desulfurization tower, including a pretreatment unit 1, an advanced treatment unit 3, and a liquid holding tank area 2 at the bottom of the tower. The pretreatment unit 1 and the advanced treatment unit 3 are connected through a flue gas pipeline, and the three form a "neck" structure . The pretreatment unit 1 is the quenching spray area 4, the primary spray area 5, and the Venturi grid washing area 6 from top to bottom; the advanced treatment unit 3 is the middle liquid holding tank area 7 and the secondary spray area from bottom to top. Shower area 8, defogging area 10, smoke discharge area 14.

[0085] The top of the quenching spray area 4 is connected with the flue gas pipeline 1-1, and the quenching spray area 4 is provided with two layers of spray pipelines I 16, the distance between the spray pipelines I 16 is 2m, and the spray pipeline I 16 is provided with a vertical An upward and a vertically downward large-diameter atomizing nozzle 1...

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Abstract

The invention discloses a dusting and desulfurizing tower and a dusting and desulfurizing technology for flue gas. The dusting and desulfurizing tower comprises a pretreatment unit, an advanced treatment unit and a tower bottom liquid tank area, and the pretreatment unit is communicated with the advanced treatment unit by a flue gas pipeline. The pretreatment unit sequentially comprises a quenching and spraying area, a first-stage spraying area and a Venturi grating washing area from top to bottom; and the advanced treatment unit sequentially comprises a middle liquid tank area, a second-stagespraying area, a demisting area and a flue gas discharging area from bottom to top. The triple functions of flue gas dedusting, desulfurizing and demisting are achieved in the tower, and all functional areas cooperate with each other and promote each other, so the occupied area of the tower is greatly reduced, and the cost for construction and reconstruction of the tower is significantly reduced.

Description

technical field [0001] The invention belongs to the field of industrial waste gas purification, and relates to a flue gas dust removal and desulfurization tower and a dust removal and desulfurization process. Background technique [0002] Sulfur dioxide and dust are contained in boiler flue gas and flue gas emitted by factories. Sulfur dioxide and dust are the main components of air pollutants. one. [0003] Wet desulfurization has the advantages of high desulfurization rate, reliable device operation, and simple operation. Therefore, the existing flue gas desulfurization technologies in various countries in the world are mainly based on wet desulfurization. Traditional wet desulfurization technologies mainly include limestone-gypsum desulfurization, double alkali desulfurization, sodium alkali desulfurization, ammonia desulfurization and so on. The above-mentioned flue gas desulfurization technology mainly adopts countercurrent spraying. The alkaline slurry is sprayed fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50B01D47/12
CPCB01D47/12B01D53/50B01D53/80B01D2258/0283
Inventor 方向晨刘忠生李欣李磊韩天竹王昊辰王海波金平
Owner CHINA PETROLEUM & CHEM CORP
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