CN110538551B - Radioactive hot air condensation demister - Google Patents
Radioactive hot air condensation demister Download PDFInfo
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- CN110538551B CN110538551B CN201910886789.8A CN201910886789A CN110538551B CN 110538551 B CN110538551 B CN 110538551B CN 201910886789 A CN201910886789 A CN 201910886789A CN 110538551 B CN110538551 B CN 110538551B
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- radioactive
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- hot air
- demister
- condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
- B01D5/0006—Coils or serpentines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses a radioactive hot air condensation demister which can generate a large amount of hot air with radioactivity and containing more water vapor in the processes of evaporating and concentrating radioactive waste liquid, drying in a barrel and drying a filter element and spent fuel, wherein the hot air is directly discharged to a radioactive waste gas treatment system to damage parts which cannot resist high temperature, so that the treatment system is corroded, and the filter element of the radioactive air is damaged and blocked; the invention provides a radioactive hot air condensation demister, which consists of a box body, a hot air condensation pipeline, a demisting system and a circulating cooling water system, wherein radioactive water-containing hot air enters the hot air condensation pipeline from the lower part of the box body for condensation, then is subjected to water vapor removal through the demisting system, and is discharged into a radioactive waste gas treatment system from the upper part of the box body; the invention effectively avoids the damage of high temperature and water vapor to the rear-end waste gas treatment system parts and the radioactive air filter element, and prolongs the service life of the waste gas treatment system and the radioactive air filter element.
Description
Technical Field
The invention relates to the field of radioactive waste gas treatment, in particular to a radioactive hot air condensation demister.
Background
During the operation of nuclear facilities, during the processes of evaporation concentration and in-barrel drying of radioactive waste liquid, or drying of replaced radioactive waste water filter elements by using hot air and drying of spent fuel in dry storage of fuel rods, a large amount of hot air with radioactivity and containing much water vapor is generated, the temperature of the hot air is about 150-.
Disclosure of Invention
The inventor researches the background technology and finds that it is necessary for the waste gas treatment system to cool the radioactive hot air containing much water vapor and remove most of the water in the hot air before the radioactive hot air enters the radioactive waste gas treatment system.
In order to meet the requirement of radioactive water-containing hot air treatment, the invention provides a radioactive hot air condensation demister, which is used for solving the problem that radioactive hot air contains more moisture and is high in temperature and inconvenient to treat, so that the radioactive water-containing hot air treatment process is convenient and efficient, the water vapor content is reduced, the influence of water vapor and high temperature on a radioactive waste gas treatment system is reduced, the service life of a radioactive air filter core is prolonged, and the safety and the integrity of the radioactive waste gas treatment system are protected.
The technical problems solved by the invention are as follows: the invention provides a radioactive hot air condensation demister which is suitable for a radioactive waste gas treatment system to pretreat radioactive hot air containing more water vapor, cool the hot air and remove most of water in the hot air.
To achieve the above object, the present application provides a radioactive heat air condensation mist eliminator, the mist eliminator comprising:
the device comprises a box body, a hot air condensation pipeline, a demisting system and a circulating cooling water system; the box body is of a main structure and is used for accommodating and supporting other parts in the demister and exhausting air; hot air enters from an air inlet pipe of a hot air condensation pipeline, and the gas is condensed by a plurality of condensation pipes, then passes through a demisting system to remove redundant moisture, and then is discharged to a radioactive waste gas treatment system; the circulating cooling water system is used for providing cooling water to cool the hot air condensation pipeline.
Preferably, the case includes: the lower box body and the upper cover plate, the middle of the lower box body is provided with the circulating water partition plate, the box body is divided into an upper part and a lower part by the circulating water partition plate, radioactive hot air and circulating cooling water are isolated, the upper part is a radioactive waste gas circulation space, the lower part is a circulating cooling water flowing space, and the upper part and the lower part are separated to prevent the radioactive air from polluting the circulating cooling water.
Preferably, the upper cover plate is of a detachable structure and is installed above the box body through bolts, and a sealing gasket is arranged between the upper cover plate and the box body for sealing.
Preferably, an exhaust interface is arranged in the center of the upper cover plate, the exhaust interface is a radioactive air exhaust interface, and the rear end of the exhaust interface is connected with a radioactive waste gas treatment system.
Preferably, the hot air condensing line includes: the air inlet joint, the condenser pipe, the condensed water drain pipe, the radiating fin and the air outlet of the condenser pipe; hot air enters the box body from the air inlet joint and then enters the plurality of condensing pipes through the main pipeline, and the radiating fins are distributed on the condensing pipes at intervals; after passing through the condenser pipe, the radioactive air enters the upper space of the box body from the air outlet of the condenser pipe; the hot air condensation pipeline is of a square structure, and a large number of radiating fins are distributed on the hot air condensation pipeline for heat exchange.
Preferably, the air outlets of the plurality of condensing pipes are distributed at different positions, so that the air entering the demister is uniformly dispersed; the condenser tube is of a metal clip structure and is made of a copper tube.
Preferably, the radioactive wastewater generated by the demister flows back into the condenser pipe through the air outlet of the condenser pipe, and is collected and gathered with the condensed radioactive wastewater generated in the condensation process of the condenser pipe through the condensed water drain pipe and then discharged into the radioactive wastewater treatment system.
Preferably, the circulating cooling water system is located in the lower space of the box body, and circulating cooling water flows into the cooling water tank through the cooling water inlet joint, cools the condensation pipe, and then flows out from the cooling water outlet joint.
Preferably, the welding of box upper portion has the defroster backup pad, installation defogging system above the defroster backup pad, and the defogging system includes: the demister A, the demister B and the sealing gasket; the demister A and the demister B are sealed with the demister supporting plate and the upper cover plate through sealing gaskets.
Preferably, the demister supporting plate is of a frame-shaped structure, is continuously welded around the box body, and the sealing gaskets are made of heat-resistant rubber materials and are continuously arranged on the upper portion and the lower portion of the demister A and the demister B to prevent radioactive hot air from flowing into the exhaust port.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
1. hot air from the front end is effectively condensed, and the damage of high temperature to parts and radioactive air filter cores of the rear radioactive waste gas treatment system which are not high in temperature resistance is avoided;
2. the water vapor only contained in the radioactive gas is effectively removed, the corrosion of moisture to a radioactive waste gas treatment system is avoided, and the blockage to a radioactive air filter core is avoided;
3. a small amount of radioactive wastewater formed in the condensation process is connected into a wastewater system through a side pipeline, so that the circulating cooling water is prevented from being polluted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic overall structure diagram of an embodiment of the present invention;
in the figure: 1-box body, 11-lower box body, 12-circulating water partition plate, 13-demister support plate, 14-upper cover plate and 15-exhaust interface; 2-a hot air condensation pipeline, 21-an air inlet joint, 22-a condensation pipe, 23-a condensation water drain pipe, 24-a radiating fin and 25-a condensation pipe air outlet; 3-demisting system, 31-demister A, 32-demister B, 33-sealing gasket; 4-circulating cooling water system, 41-cooling water tank, 42-cooling water inlet joint and 43-cooling water outlet joint.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1, the present invention provides a radioactive hot air condensing demister, which mainly comprises a tank 1, a hot air condensing pipeline 2, a demisting system 3 and a circulating cooling water system 4. The box body 1 is a main structure and has the functions of accommodating, supporting other parts and exhausting air; hot air enters from an air inlet pipe 21 of the hot air condensation pipeline 2, and the gas is condensed by a plurality of condensation pipes 22, then passes through the demisting system 3 to remove redundant moisture, and then is discharged to the radioactive waste gas treatment system; the circulating cooling water system 4 provides cooling water to cool the hot air condensing line 2.
As shown in fig. 1 and 2, the box body 1 is composed of a lower box body 11 and an upper cover plate 14, a circulating water partition plate 12 is arranged in the middle of the lower box body 11, the box body 1 is divided into an upper part and a lower part by the circulating water partition plate 12, radioactive waste gas circulation space is arranged at the upper part, circulating cooling water flow space is arranged at the lower part, and pollution of the radioactive air to the circulating cooling water is prevented; the upper cover plate 14 is of a detachable structure and is installed above the box body through bolts.
Preferably, a gasket is used to seal the upper cover plate 14 and the case to prevent leakage of radioactive air.
The exhaust port 15 is a quick connector, is installed at the center of the upper cover plate 14, is a radioactive air exhaust port, and is connected with a radioactive waste gas treatment system at the rear end.
The hot air condensation pipeline 2 comprises an air inlet joint 21, a condensation pipe 22, a condensation water drain pipe 23, a heat dissipation fin 24 and a condensation pipe air outlet 25. The air inlet joint 21 is a heat-resistant quick joint, hot air enters the plurality of condensing pipes 22 through the main pipeline after entering the box body from the air inlet joint 21, the condensing pipes 22 are of metal clip structures, preferably, the condensing pipes are made of copper pipes, and radiating fins 24 are distributed on the condensing pipes at intervals, so that the condensing pipes can radiate heat conveniently; after passing through the condenser pipe 22, the radioactive air enters the upper space of the box body from the air outlet 25 of the condenser pipe; preferably, the plurality of condenser tube air outlets 25 are distributed at different locations to evenly disperse the air entering the demister.
A small amount of radioactive wastewater generated by the demister flows back into the condenser pipe through the condenser pipe air outlet 25, and is collected and converged by the condensate water drain pipe 23 together with a small amount of condensed radioactive wastewater generated in the condensation process of the condenser pipe and then discharged into the radioactive wastewater treatment system.
The lower space of the cabinet is a circulating cooling water system 4, and circulating cooling water flows into the cooling water tank 41 through the cooling water inlet joint 42, cools the condenser pipe 22, and then flows out through the cooling water outlet joint 43.
The upper part of the box body is welded with a demister support plate 13, the demister support plate 13 is of a frame structure, is continuously welded around the box body, and is provided with a demisting system which consists of a demister A31, a demister B32 and a sealing gasket 33; the demister a31 and the demister B32 are sealed with the demister support plate 13 and the upper cover plate 14 by gaskets 33, and the gaskets 33 are made of heat-resistant rubber material and are continuously attached to the upper and lower parts of the demister a31 and the demister B32 to prevent the radioactive hot air from flowing into the exhaust port 15 from other gaps.
In the first embodiment, the demister a31 is a baffle demister, and the demister B32 is a wire mesh demister; in the second embodiment, the demister A31 and B32 are a combination of wire mesh demisters of different efficiencies; in the third embodiment, the demister a31 is a wire mesh demister, the demister B32 is a dryer, and the filler thereof may be lime, calcium sulfate, calcium chloride, silica gel, or the like. The different demisters have the same overall dimension, the difference is different demisting modes, and different combination modes can be adopted according to the needs.
After a period of use, if the demister a31 and the demister B32 fail, the upper cover plate 14 is opened, and the failed demister is taken out and replaced with a new demister.
The demister combination mode comprises but is not limited to a baffle plate demister and a wire mesh demister, the wire mesh demisters with different efficiencies and the wire mesh demister and a dryer, the overall dimensions of different demisters are the same, and different combination modes are adopted as required.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A radioactive heat air condensation mist eliminator, wherein the mist eliminator comprises:
the device comprises a box body, a hot air condensation pipeline, a demisting system and a circulating cooling water system; the box body is of a main structure and is used for accommodating and supporting other parts in the demister and exhausting air; hot air enters from an air inlet pipe of a hot air condensation pipeline, and the gas is condensed by a plurality of condensation pipes, then passes through a demisting system to remove redundant moisture, and then is discharged to a radioactive waste gas treatment system; the circulating cooling water system is used for providing cooling water to cool the hot air condensation pipeline;
the box includes: the device comprises a lower box body and an upper cover plate, wherein a circulating water partition plate is arranged in the middle of the lower box body and divides the box body into an upper part and a lower part, radioactive hot air and circulating cooling water are isolated, the upper part is a radioactive waste gas circulation space, and the lower part is a circulating cooling water flow space;
the hot air condensing duct includes: the air inlet joint, the condenser pipe, the condensed water drain pipe, the radiating fin and the air outlet of the condenser pipe; hot air enters the box body from the air inlet joint and then enters the plurality of condensing pipes through the main pipeline, and the radiating fins are distributed on the condensing pipes at intervals; after the radioactive air passes through the condenser pipe, the radioactive air enters the upper space of the box body from the air outlet of the condenser pipe.
2. A radioactive heat air condensation mist eliminator as claimed in claim 1 wherein the upper cover plate is of a removable construction and is bolted to the top of the tank, and a gasket is provided between the upper cover plate and the tank to seal the same.
3. A radioactive heat air condensation mist eliminator as claimed in claim 1 wherein the upper cover plate is centrally mounted with an exhaust port, the exhaust port is a radioactive air exhaust port, and the rear end of the exhaust port is connected to a radioactive exhaust gas treatment system.
4. A radioactive heat air condensation mist eliminator as claimed in claim 1 wherein the plurality of condenser tube air outlets are distributed at different locations to disperse the air entering the mist eliminator evenly; the condenser tube is of a metal clip structure and is made of a copper tube.
5. A radioactive air condensation demister as claimed in claim 1, wherein the radioactive waste water generated by the demister flows back into the condenser pipe through the outlet of the condenser pipe, and is collected and converged with the condensed radioactive waste water generated during condensation in the condenser pipe through the condensed water drain pipe and discharged into the radioactive waste water treatment system.
6. A radioactive air condensation mist eliminator as claimed in claim 1 wherein a recirculating cooling water system is located in the lower space of the enclosure, recirculating cooling water flows into the cooling water tank through the cooling water inlet connection, cools the condenser pipe, and then flows out through the cooling water outlet connection.
7. A radioactive hot air condensation mist eliminator as claimed in claim 1 wherein a mist eliminator support plate is welded to the upper portion of the tank, and a mist elimination system is mounted on the mist eliminator support plate, the mist elimination system comprising: the demister A, the demister B and the sealing gasket; the demister A and the demister B are sealed with the demister supporting plate and the upper cover plate through sealing gaskets.
8. A radioactive heat air condensation mist eliminator as claimed in claim 7 wherein the mist eliminator support plate is of frame-like construction continuously welded around the tank and the gaskets are of heat resistant rubber material continuously mounted on the upper and lower parts of the mist eliminator A and mist eliminator B to prevent the flow of radioactive heat air into the exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910886789.8A CN110538551B (en) | 2019-09-19 | 2019-09-19 | Radioactive hot air condensation demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910886789.8A CN110538551B (en) | 2019-09-19 | 2019-09-19 | Radioactive hot air condensation demister |
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| Publication Number | Publication Date |
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| CN110538551A CN110538551A (en) | 2019-12-06 |
| CN110538551B true CN110538551B (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910886789.8A Active CN110538551B (en) | 2019-09-19 | 2019-09-19 | Radioactive hot air condensation demister |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111243772A (en) * | 2020-01-15 | 2020-06-05 | 衡阳师范学院 | Device and method for improving adsorption capacity of radioactive gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102728092A (en) * | 2012-07-03 | 2012-10-17 | 济南巴克超声波科技有限公司 | Condensation-type defogging device |
| CN204214170U (en) * | 2014-10-15 | 2015-03-18 | 浙江凯迪制冷设备有限公司 | A kind of condenser of recirculated water cooling |
| CN108607300A (en) * | 2016-12-12 | 2018-10-02 | 红塔烟草(集团)有限责任公司 | The special cool-down dehumidification case of tobacco |
| CN109737768A (en) * | 2019-01-09 | 2019-05-10 | 哈尔滨拓思科技有限公司 | A kind of pair of air-flow carries out cooling refrigeration system immediately |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1913323A4 (en) * | 2005-07-29 | 2010-08-04 | Freedom Water Company Ltd | Water condenser |
| CN206793088U (en) * | 2017-06-02 | 2017-12-26 | 宁波中科远东催化工程技术有限公司 | A kind of sulfuric acid vapor condenser of wet method Sulphuric acid |
-
2019
- 2019-09-19 CN CN201910886789.8A patent/CN110538551B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728092A (en) * | 2012-07-03 | 2012-10-17 | 济南巴克超声波科技有限公司 | Condensation-type defogging device |
| CN204214170U (en) * | 2014-10-15 | 2015-03-18 | 浙江凯迪制冷设备有限公司 | A kind of condenser of recirculated water cooling |
| CN108607300A (en) * | 2016-12-12 | 2018-10-02 | 红塔烟草(集团)有限责任公司 | The special cool-down dehumidification case of tobacco |
| CN109737768A (en) * | 2019-01-09 | 2019-05-10 | 哈尔滨拓思科技有限公司 | A kind of pair of air-flow carries out cooling refrigeration system immediately |
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| CN110538551A (en) | 2019-12-06 |
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