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Flue gas dust removal and desulfurization tower and dust removal and desulfurization method

A desulfurization tower, flue gas technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve problems such as difficulty in meeting emission standards

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing wet desulfurization devices are difficult to meet the requirements of emission standards

Method used

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

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Embodiment

[0082] 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 12.

[0083] 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 method for flue gas. The dusting and desulfurizing tower comprises a pretreatment unit, an advanced treatmentunit and a tower bottom liquid tank, 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-stage sprayingarea, 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 areascooperate 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 method. 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 from...

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 李磊李欣方向晨刘忠生刘淑鹤韩天竹王海波王昊辰
Owner CHINA PETROLEUM & CHEM CORP
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