Flue gas dedusting and desulfurization tower, flue gas desulfurization and wastewater treatment method

A desulfurization tower and flue gas technology, applied in the direction of gaseous effluent wastewater treatment, neutralized water/sewage treatment, water/sewage treatment, etc., can solve the problems of white smoke, ground dust rain, strong visual impact, etc., to reduce energy consumption Low energy consumption, high dust removal efficiency, and the effect of eliminating the need for 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

[0007] 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 dedusting and desulfurization tower, flue gas desulfurization and wastewater treatment method
  • Flue gas dedusting and desulfurization tower, flue gas desulfurization and wastewater treatment method
  • Flue gas dedusting and desulfurization tower, flue gas desulfurization and wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A flue gas dedusting and desulfurization tower, from top to bottom are the flue gas discharge area 1, the mist removal area 3, the tower area 4, the spray area 6 and the waste water treatment area 7, the flue gas discharge area 1 and the mist removal area 3 It is connected by a cone-shaped diameter 2, and below the demisting area 3 is a tray area 4, and the tray area 4 and the spray area 6 are connected by an inverted cone-shaped diameter 5, and below the spray area 6 is a waste water treatment area 7.

[0069] 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 openings, the upper edge of the outer sleeve 35 is 5m higher than the top of the chimney 34, and the lo...

Embodiment 2

[0081] The boiler flue gas temperature of an enterprise is 135°C, where SO 2 The concentration is 850mg / Nm 3 , Dust concentration is 280mg / Nm 3 , using the flue gas dedusting and 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 and the waste water treatment area 7. The diameter of the tower body is 8m. The temperature of the flue gas discharged from the flue gas discharge area 1 is 48°C, and the dust content is 6.5mg / Nm 3 , SO 2 The content is 10mg / Nm 3 ; When the ambient temperature is 25°C, the ambient wind speed is 4m / s, and the ambient humidity is 70%, the length of the "white smoke" at the chimney mouth is 45m.

Embodiment 3

[0083] As a comparison, the flue gas dedusting and desulfurization tower is not equipped with an outer sleeve 28, and the rest is the same as that of Example 1, and the length of the "white smoke" at the chimney mouth is 80m.

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Abstract

The invention discloses a flue gas dedusting and desulfurization tower and a flue gas desulfurization and waste water treatment method. The flue gas dedusting and desulfurization tower consists of flue gas discharge area, demisting area, tower plate area, spray area and wastewater treatment area from top to bottom; It is connected with the spray area through an inverted cone-shaped diameter; the center of the wastewater treatment area is divided into an oxidation flocculation area and a circulating clear liquid area through a vertical partition I, and the top of the circulating clear liquid area is connected to the oxidation flocculation area through a partition II. The flocculation area and the spray area are completely separated; 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 dedusting, desulfurization and waste water treatment in one tower, and utilizes flue gas The wastewater is stirred to realize the oxidation flocculation concentration operation, and the liquid level difference on both sides of the vertical partition is used as the driving force to realize the filtration operation of the desulfurization wastewater, which greatly reduces the occupied area, significantly reduces the cost and equipment required for the construction and transformation of the equipment operating costs.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50B01D53/96B01D50/00C02F9/04C02F103/18
CPCB01D50/00B01D53/504B01D53/80B01D53/96C02F1/001C02F1/5245C02F1/56C02F1/66C02F1/727C02F1/74C02F1/78C02F9/00C02F2101/101C02F2103/18
Inventor 韩天竹李磊刘忠生李欣王海波金平
Owner CHINA PETROLEUM & CHEM CORP
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