Flue ozone distributor, and arrangement mode and application thereof

A distributor and flue technology, applied in the field of environmental engineering, can solve problems such as harm to human health, environment, ecology and social economy, and achieve the effect of simple structure, convenient installation and guaranteed mixing effect.

Inactive Publication Date: 2014-05-28
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are various pollutants in flue gas emitted by industries such as thermal power and iron and steel. Most of the existing flue gas purification devices in domestic enterprises are aimed at SO 2 governance, while NO x As a major air pollutant, it also seriously endangers human health, environment, ecology and social economy.

Method used

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  • Flue ozone distributor, and arrangement mode and application thereof
  • Flue ozone distributor, and arrangement mode and application thereof
  • Flue ozone distributor, and arrangement mode and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A flue ozone distributor, the flue ozone distributor includes a distribution main pipe, a plurality of distribution branch pipes and a plurality of Venturi distributors; the plurality of distribution branch pipes are drawn from different longitudinal sections of the distribution main pipe in parallel, and multiple The distribution branch pipes are arranged in a staggered manner; the multiple Venturi distributors are arranged symmetrically and staggered on both sides of the distribution branch pipes.

[0047] When the flue ozone distributor is arranged in the flue, the multiple Venturi distributors in the flue ozone distributor are perpendicular to the flue gas flow direction, and the horizontal distance between the ends of the multiple distribution branch pipes and the side wall of the flue is the flue 1 / 2 of the width. Even groups of flue ozone distributors are installed symmetrically and misplaced on both sides of the flue.

Embodiment 2

[0049] Such as Figure 1 to Figure 3 Shown, a kind of flue ozone distributor, described flue ozone distributor comprises distribution main pipe 2, a plurality of distribution branch pipes 3 and a plurality of Venturi distributors 4; The vertical section is branched out in parallel, and a plurality of distribution branch pipes 3 are arranged in a staggered manner;

[0050] The distribution branch pipe 3 is divided into two sections, the front distribution branch pipe 3-1 section is drawn out from the distribution main pipe 2, and the rear distribution branch pipe section 3-2 is connected by a connecting flange 6. The front distribution branch pipe 3-1 is provided with a regulating valve 6, which can regulate the amount of ozone passing through according to the NO concentration in the flue gas. The distance between the different longitudinal sections is 200mm. The spacing between the centerlines of adjacent distribution branch pipes 3 of different longitudinal sections is equa...

Embodiment 3

[0057] The difference between this embodiment and embodiment 2 is:

[0058] The distance between the different longitudinal sections is 100mm. The distance between the centerlines of adjacent distribution branch pipes 3 of different longitudinal sections is 300mm.

[0059] The air velocity in the distribution main pipe 2 is 25m / s; the air velocity in the distribution branch pipe 3 is controlled at 20m / s.

[0060] The distance between two adjacent Venturi distributors 4 on the same distribution branch pipe 3 on the same side is 50mm.

[0061] The constriction angle of the Venturi distributor 4 is 70°, and the divergence angle is 25°.

[0062] The throat height-diameter ratio of the Venturi distributor 4 is 1.0, and the gas velocity at the throat is 8m / s.

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Abstract

The invention relates to a flue ozone distributor, and an arrangement mode and an application thereof. The flue ozone distributor comprises a distribution main pipe, a plurality of distribution branch pipes and a plurality of Venturi distributors, wherein the plurality of distribution branch pipes are branched and led out from different longitudinal sections of the distribution main pipe; the plurality of distribution branch pipes are in staggered arrangement; and the plurality of Venturi distributors are arranged alternatively and symmetrically at two sides of the distribution branch pipes. The flue is provided with the flue ozone distributor. The flue ozone distributor is generally applied in the fields of low temperature ozone denitration of industrial boiler/kiln gas in industries such as thermoelectricity and steel. The flue ozone distributor is simple in structure and convenient for installation. A direction that ozone is sprayed into the flue is vertical to a gas flow direction. No dust deposition blockage problem exists. Besides, the inlet content of O3 is adjusted according to the concentration of NO in the gas; operability is strong; and operational economic benefits are increased, thereby meeting practical industrial applications.

Description

technical field [0001] The invention relates to a flue ozone distributor, its layout and application, and belongs to the technical field of environmental engineering. Background technique [0002] There are various pollutants in flue gas emitted by industries such as thermal power and iron and steel. Most of the existing flue gas purification devices in domestic enterprises are aimed at SO 2 governance, while NO x As a major air pollutant, it also seriously endangers human health, environment, ecology and social economy. The newly promulgated flue gas emission standards for thermal power, steel, etc. have already imposed NO x strict requirements on emissions. NO 2 with SO 2 Similar properties are all acid gases, which are easy to combine with alkaline substances to react to achieve the purpose of removal. Due to the NO in the flue gas x More than 90% of the gas is NO, which needs to be oxidized to NO first 2 , There are many kinds of oxidation removal technology. Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/76B01D53/56B01F5/04B01F5/00B01F3/02B01F23/10
Inventor 朱廷钰赵瑞壮徐文青刘文王雪
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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