Flue gas desulfurization tower and flue gas desulfurization and wastewater treatment process

A desulfurization tower and flue gas technology, applied in the direction of gaseous effluent wastewater treatment, gas treatment, water/sewage treatment, etc., can solve problems such as strong visual impact, white smoke, ground dust rain, etc., to reduce energy consumption and dust removal efficiency High, save the effect of flushing equipment

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 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 desulfurization tower and flue gas desulfurization and wastewater treatment process
  • Flue gas desulfurization tower and flue gas desulfurization and wastewater treatment process
  • Flue gas desulfurization tower and flue gas desulfurization and wastewater treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] A flue gas desulfurization tower, from top to bottom is a flue gas discharge area 1, a demisting area 3, a tower area 4, a spray area 6, a rapid cooling cooling area 36 and a waste water treatment area 7, the flue gas discharge area 1 and the The defogging zone 3 is connected by a cone-shaped variable diameter 2, the tower plate zone 4 is below the defogging zone 3, the tower plate zone 4 and the spray zone 6 are connected by an inverted cone-shaped variable diameter 5, and the quenching cooling zone is below the spray zone 6 36. Below the rapid cooling zone 36 is the waste water treatment zone 7.

[0076] The chimney 34 structure in the conventional flue gas wet desulfurization process is set in the flue gas discharge area 1. The bottom of the chimney 34 is connected with the tower body of the demisting area 3 through a cone-shaped diameter 2, and an outer sleeve 35 is set on the top of the chimney 34. The sleeve 35 is a cylindrical structure with upper and lower openi...

Embodiment 2

[0087] The boiler flue gas temperature of an enterprise is 152°C, where SO 2 The concentration is 1000mg / Nm 3 , Dust concentration is 260mg / Nm 3 , using the flue gas desulfurization tower of the present invention, the diameter of the chimney 27 is 4m, the diameter of the outer sleeve is 5m, the diameter of the tower body in the demisting area 3 and the tray area 4 is 10m, the spraying area 6, the quenching cooling area 36 The diameter of the 7th tower body in the waste water treatment area is 8m, and the clean water flow rate in the rapid cooling cooling area is 80 m 3 / h. SO in exhaust flue gas 2 The content is measured by German Testo flue gas analyzer (model Testo-350). The dust content is measured according to GB / T 16157-1996 "Sampling Method for Particulate Matter and Gaseous Pollutants in Exhaust from Stationary Pollution Sources". The gas is filtered, dissolved in water, and the salt content is measured and calculated according to HJ / T51-1999 "Gravimetric Method for...

Embodiment 3

[0089] As a comparison, the flue gas desulfurization tower is not equipped with an outer sleeve 28, and the rest is the same as that of Example 2, and the length of the "white smoke" at the chimney mouth is 80m.

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Abstract

The invention discloses a flue gas desulfurization tower and a flue gas desulfurization and waste water treatment process. The flue gas desulfurization tower includes a flue gas discharge area, a mist removal area, a tray area, a spray area, a quenching cooling area and a wastewater treatment area; the wastewater treatment area is divided into an oxidation flocculation area and a circulating cleaning area through a vertical partition I in the center. In the liquid area, the top of the circulating clear liquid area is completely separated from the oxidation flocculation area and the spray area through the partition II; the oxidation flocculation area is provided with a stirring device; the vertical partition I is provided with a filter medium; The present invention performs flue gas dust removal, desulfurization, desalination and waste water treatment in one tower, utilizes flue gas to stir the waste water to realize oxidation flocculation concentration operation, and uses the liquid level difference on both sides of the vertical partition as the driving force to realize the desulfurization waste water The filter operation can greatly reduce the occupied area, significantly reduce the cost of device construction and transformation and the operating cost of the device.

Description

technical field [0001] The invention belongs to the field of industrial waste gas purification, and relates to a flue gas desulfurization tower and a flue gas desulfurization and waste water treatment 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 fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50B01D47/06B01D50/00C02F9/10C02F103/18
CPCB01D47/06B01D50/00B01D53/50B01D53/80B01D2258/0283C02F1/001C02F1/04C02F1/5236C02F1/5281C02F1/56C02F1/72C02F1/74C02F1/78C02F9/00C02F2001/007C02F2103/18C02F2209/06C02F2209/08
Inventor 周建华李磊王明星金平刘忠生
Owner CHINA PETROLEUM & CHEM CORP
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