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Passive plate type wet dust and mist removal device and treatment technology thereof

A technology of wet dust removal and mist removal device, which is applied in the direction of combination device, liquid separation agent, and dispersed particle separation. The effect of fast operation, simple device structure setting, and optimized treatment process

Active Publication Date: 2015-06-03
BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process, the mist eliminator removes the tiny droplets produced in the wet spraying process. The types of mist eliminators are mainly flat plate and roof type. The removal effect of droplets with a diameter of less than 5um, dust with a particle diameter of less than 5um in the flue gas, and tiny particles such as sulfate, sulfite, nitrate, and nitrite that constitute PM2.5 aerosols are difficult to achieve environmental protection Require
In addition, in the process of processing, a wet electrostatic precipitator is installed after the wet desulfurization unit for dust removal and demisting. Although it can effectively remove tiny particles, the wet electrostatic precipitator has the disadvantages of large space occupation of process equipment, high initial investment, and difficult operation. Many problems such as high energy consumption and difficulty in retrofitting existing projects

Method used

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  • Passive plate type wet dust and mist removal device and treatment technology thereof
  • Passive plate type wet dust and mist removal device and treatment technology thereof
  • Passive plate type wet dust and mist removal device and treatment technology thereof

Examples

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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a passive plate-type wet dedusting and demisting device of the present invention comprises a housing with a smoke inlet channel 1 and a smoke outlet channel 6 at both ends, and an atomizing nozzle 2, a venturi The air guide channel and the mist eliminator 5, wherein the atomizing nozzle 2 is adjacent to the smoke inlet channel 1, and the mist eliminator 5 is connected to the smoke outlet channel 6.

[0028] In the above embodiment, in order to enhance the condensation effect of the flue gas after passing through the Venturi gas channel, as figure 1 with figure 2 As shown, there are multiple groups of the Venturi air guide channels, and each group of the Venturi air guide channels is composed of a plurality of partitions 3 and air guide plates 4; the Venturi air guide channels include sequentially connected contraction sections 7. Throat 8 and diffuser section 9 , wherein the constricted section 7 is adjacent to the atomizing nozzle 2 , and ...

Embodiment 2

[0037] Such as image 3 with Figure 4 As shown, a passive plate type wet dust and mist removal device of the present invention has the same basic configuration and application as in Embodiment 1, wherein the air guide plate 4 is an arc-curved air guide plate 10, and the arc-curved plate 10 It forms a Venturi air guide channel with the partition 3. This setting can increase the number and intensity of collisions between the smoke and the wall of the Venturi air guide channel, accelerate the change of the movement direction and speed of the smoke gas, and increase the shrinkage and diffusion of the smoke gas. Thereby accelerating the condensation, and then more effectively promoting the condensation of tiny particles in the flue gas.

Embodiment 3

[0039] Such as Figure 5 with Image 6 As shown, a passive plate-type wet dedusting and demisting device of the present invention has the same basic configuration and application as that of Embodiment 1 or Embodiment 2, except that the Venturi air guiding channel is composed of multiple groups of Venturi tubes, Each set of venturi tubes is formed by connecting a plurality of partitions 3 and air guiding plates 4 .

[0040] In the above-mentioned embodiment, compared with Embodiment 1 or Embodiment 2, the gap of the Venturi air conduction channel is reduced, and the chance of the flue gas mixing to meet the Venturi air guide channel wall is increased, which is beneficial to increase the resistance of the Venturi air guide channel wall to large Droplet capture ability.

[0041] In the above embodiment, in order to enhance the removal effect of tiny particles in the flue gas, preferably, the distance between adjacent air guide plates 4 is 0.5 meters, the height of the air guide...

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Abstract

The invention relates to a passive plate type wet dust and mist removal device and a treatment technology thereof. The device comprises a shell, wherein a smoke inlet channel and a smoke outlet channel are formed at two ends of the shell; an atomizing nozzle, a venturi air guide channel and a demister are sequentially arranged in the shell; the atomization nozzle is adjacent to the smoke inlet channel; the demister is connected with the smoke outlet channel; dust and mist removal treatment can be carried out through the passive plate type wet dust and mist removal device. The passive plate type wet dust and mist removal device is simple in structure arrangement, low in running resistance, and high in safety and reliability; an optimized treatment technology is adopted, so that the running is fast, and the cost is low; small particles such as small droplets, fine dust particles and aerosol in smoke can be effectively removed; and especially compared with a wet electric dust removal device and technology capable of reaching the same purification effect, the dust and mist removal device and the technology provided by the invention are free of an electrical element; the energy consumption is reduced; the economic cost is greatly reduced; and the wet dust and mist removal device is convenient to mount and is suitable for application in the field of smoke purification, dust removal and mist removal of related industries such as fire coal, fuel oil and gas thermal power plants, metallurgy, chemical engineering, and solid waste (garbage) treatment.

Description

technical field [0001] The invention relates to the technical field of dust and mist removal in flue gas treatment, in particular to a passive plate wet dust and mist removal device and a treatment process for existing flue gas wet treatment. Background technique [0002] At present, there are many flue gas dedusting technologies, among which, the relatively mature and representative technologies are: electrostatic precipitator, bag filter, electrostatic bag combined precipitator, wet electrostatic precipitator and other dust removal technologies, which are used for flue gas wet After desulfurization, the dust and mist removal devices are mainly mist eliminators and wet electrostatic precipitators. In the process, the mist eliminator removes the tiny droplets produced in the wet spraying process. The types of mist eliminators are mainly flat plate and roof type. The removal effect of droplets with a diameter of less than 5um, dust with a particle diameter of less than 5um i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D47/06
Inventor 李媛媛
Owner BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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