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Decontamination plant for radioactive aerosol and treatment method thereof

A purification device and radioactive technology, applied in the field of radioactive aerosol purification devices, can solve the problems that aerosols cannot achieve the same treatment effect, cannot handle sub-micron aerosols, and have limited application scope, and achieve sustainable and stable output air volume. Reliable performance and improved anti-interference effect

Inactive Publication Date: 2018-06-29
上海穗杉实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN206040223 U discloses a mobile nuclear air purification vehicle, the equipment is small in size, flexible in handling, large in air volume, and high in processing efficiency, but the purification method used is relatively simple, the processing components are single, and the scope of application is greatly limited
CN 202683004 U discloses a radioactive aerosol purification device suitable for high-humidity occasions. The device can be used for the purification of general micron-scale radioactive aerosols, but the purification method only uses filtration and cannot process sub-micron-scale aerosols.
CN106297931 A discloses a radioactive aerosol high-efficiency purification and recovery device and its working method. The device includes processing units such as a filter unit and a bubbling unit, and a detection unit is arranged to improve the purification efficiency of radioactive aerosol. However, the method used in the device It is still relatively simple, and cannot achieve the same treatment effect on aerosols of different particle sizes

Method used

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  • Decontamination plant for radioactive aerosol and treatment method thereof
  • Decontamination plant for radioactive aerosol and treatment method thereof
  • Decontamination plant for radioactive aerosol and treatment method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0085] This embodiment provides a radioactive aerosol purification device. The three-dimensional schematic diagram of the device is as figure 1 As shown, the main view and external structure diagram are as figure 2 with image 3 As shown, the device mainly includes the main body of the equipment, the main body of the equipment is a vertical casing, the bottom of which is provided with an air inlet, and the top is provided with an air outlet, from bottom to top, including a pre-filtering part 1, an electrocoagulation and collecting part 2. The fan 3 and the end filter adsorption part 4.

[0086] Wherein, the pre-filter part 1 includes a stainless steel metal filter screen 11 and a glass fiber filter paper 12 in order from the direction of the air inlet, the mesh size of the stainless steel metal filter screen 11 is 140 mesh; the electrocoagulation and collection part 2 It is mainly composed of an electric coagulator and an electrostatic precipitator. The electric coagulator adopts...

Embodiment 2

[0091] This embodiment provides a radioactive aerosol purification device. The device refers to the device in Embodiment 1. The difference is that the mesh size of the stainless steel metal filter 11 is 80 meshes; the maximum air volume of the fan 3 is 750m 3 / h, the maximum wind pressure is 300Pa, and the noise index is 45dB; the porous adsorption material 41 of the end filter adsorption part 4 is molecular sieve, and the mesh size of the brass metal filter 42 is 50 mesh; The voltage of the high-voltage power supply is 8kV.

Embodiment 3

[0093] This embodiment provides a radioactive aerosol purification device. The device refers to the device in Embodiment 1. The difference is: the mesh size of the stainless steel metal filter 11 is 200 meshes; the maximum air volume of the fan 3 is 1000m 3 / h, the maximum wind pressure is 400Pa, and the noise index is 60dB; the porous adsorption material 41 of the end filter adsorption part 4 is a molecular sieve, and the mesh size of the brass metal filter 42 is 150 mesh; the electric control part 7 The voltage of the high-voltage power supply is 20kV.

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Abstract

The invention provides a decontamination plant for radioactive aerosol and a treatment method thereof. The plant mainly comprises equipment body parts, wherein one side of the equipment body is provided with an air inlet, the other side of the equipment body is provided with an air outlet, and the equipment body is internally provided with a preposed filtering part, an electrocoagulation and collection part, a draught fan and a tail end filtration and adsorption part in turn from the side where the air inlet locates to the other side. The decontamination plant for the radioactive aerosol and the treatment method thereof have the advantages that filtration technology, electrocoagulation and collection technology and adsorption technology are coupled to decontaminate gas containing radioactive aerosol, submicron particles are coagulated into micron particles, the particle size range of to-be-removed particles is enlarged, and the removal rate of the radioactive aerosol particles in the gas reaches up to 99% or above. The decontamination plant for radioactive aerosol and the treatment method thereof have the advantages that each part of the plant is differently designed, parts of theparts are designed into drawer type structures, the structure optimization and layout optimization are used to achieve high-efficiency combination, each part can be dismounted separately, and the operation and maintenance are convenient.

Description

Technical field [0001] The invention belongs to the technical field of gas purification, and relates to a radioactive aerosol purification device and a processing method thereof. Background technique [0002] Radioactive aerosol is a dispersion system of radioactive solid or liquid particles suspended in air or gas medium. The radioactive aerosol has a wide range of particle size distribution, and is in 10 -2 There are also some in the μm range, and the aerosol is unstable. The particles smaller than 0.1 μm make Brownian motion in the gas and do not settle due to gravity; the particles of 1 to 10 μm settle slowly and are suspended in the air for a long time. The formation of radioactive aerosol mainly includes natural nuclides and artificial nuclides. Natural nuclides are mainly distributed in the earth's crust, soil, rocks, groundwater and surface water; artificial nuclides mainly come from tactical nuclear weapons and nuclear power plants during operation and after decommissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/02B01D53/02B01D50/00
CPCB01D50/00B01D53/02G21F9/02
Inventor 郑久汉郑力顾修筑郑昭张正赵自航李海霞王晨
Owner 上海穗杉实业股份有限公司
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