CN108645232B - Modular high-level radioactive waste liquid evaporation-calcining furnace - Google Patents
Modular high-level radioactive waste liquid evaporation-calcining furnace Download PDFInfo
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- CN108645232B CN108645232B CN201810399822.XA CN201810399822A CN108645232B CN 108645232 B CN108645232 B CN 108645232B CN 201810399822 A CN201810399822 A CN 201810399822A CN 108645232 B CN108645232 B CN 108645232B
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- evaporation
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- exhaust pipe
- waste liquid
- furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/02—Ohmic resistance heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention provides a modular high-level radioactive waste liquid evaporation-calcining furnace. The modular high-level radioactive waste liquid evaporation-calcining furnace comprises a furnace shell, a furnace lining module, a heating wire and an evaporation-calcining module; the upper end of the furnace shell is provided with a furnace lining module inlet; the furnace lining module comprises a furnace lining shell, a heating cavity is formed in the furnace lining shell, an evaporation-calcination cup placing opening is formed in the top of the furnace lining shell, and a hoisting component is arranged on the furnace lining shell; the heating wire is arranged in the heating cavity; the evaporation-calcination module comprises an evaporation-calcination cup, the evaporation-calcination cup comprises a cup body and a cup cover, the cup body and the cup cover are in openable sealing connection, an exhaust pipe is arranged on the cup cover, an exhaust pipe operating handle is arranged on the exhaust pipe, an exhaust pipe cover is arranged on an outer opening of the exhaust pipe, the exhaust pipe cover and the exhaust pipe are in openable sealing connection, and an exhaust pipe cover operating handle is arranged on the exhaust pipe cover.
Description
Technical Field
The invention belongs to the field of radioactive waste treatment, and particularly relates to high-level radioactive waste liquid treatment equipment.
Background
In the field of radioactive waste treatment, high level radioactive waste liquid can be treated by heating, evaporating and calcining to reduce the volume of radioactive waste. Because high level radioactive waste fluids have strong radioactivity, their waste treatment is typically accomplished by robotic arms in a hot room. In the heating evaporation-calcination process, the corrosivity of the high-level radioactive waste liquid is continuously increased, and nitrogen oxide gas with strong corrosivity is generated, so that the treatment equipment is seriously corroded.
At present, no mature commercial high-level waste liquid evaporation-calcination equipment is sold in the market, and no specific design scheme is disclosed for reference. Considering the difficulty of the operation of the manipulator in the hot chamber and the safety requirement of radioactive operation, if the evaporation-calcination treatment of the high level radioactive waste in the hot chamber is to be realized, the high level radioactive waste evaporation-calcination equipment which is convenient and reliable to operate and has high radioactive operation safety needs to be developed.
Disclosure of Invention
The invention provides a modular high-level radioactive waste liquid evaporation-calcining furnace, which aims to solve the problem that no mature high-level radioactive waste liquid evaporation-calcining equipment is available at present, simultaneously meet the requirements of convenience and reliability of remote operation in radioactive waste treatment, ensure the safety of radioactive operation and reduce the generation amount of radioactive waste.
The modular high-level radioactive waste liquid evaporation-calcining furnace comprises a furnace shell, a furnace lining module, a heating wire and an evaporation-calcining module; the upper end of the furnace shell is provided with a furnace lining module inlet; the furnace lining module comprises a furnace lining shell, a heating cavity is formed in the furnace lining shell, an evaporation-calcination cup placing opening is formed in the top of the furnace lining shell, and a hoisting component is arranged on the furnace lining shell; the heating wire is arranged in the heating cavity; the evaporation-calcination module comprises an evaporation-calcination cup, the evaporation-calcination cup comprises a cup body and a cup cover, the cup body and the cup cover are in openable sealing connection, an exhaust pipe is arranged on the cup cover, an exhaust pipe operating handle is arranged on the exhaust pipe, an exhaust pipe cover is arranged on an outer opening of the exhaust pipe, the exhaust pipe cover and the exhaust pipe are in openable sealing connection, and an exhaust pipe cover operating handle is arranged on the exhaust pipe cover.
According to one embodiment, the furnace shell is provided with a heat preservation cavity at the bottom, and the heat preservation cavity is filled with heat preservation materials.
According to one embodiment, the lining shell inner wall surface may be coated with a thermal insulation material.
According to one embodiment, the modular high level waste liquid evaporation-calciner comprises a dust cover adapted to the evaporation-calciner cup insertion port.
According to one embodiment, the cup body of the evaporation-calcination cup is of an inner-layer structure and an outer-layer structure, wherein the outer layer is made of stainless steel, and the inner layer is made of tantalum metal.
Furthermore, the stainless steel layer at the bottom of the evaporation-calcination cup is provided with heat dissipation holes.
According to one embodiment, the openable sealing connection between the cup body and the cup cover of the evaporation-calcination cup can be a threaded connection and is sealed by a sealing ring.
Further, the sealing ring may be a graphite sealing ring.
According to one embodiment, the outer surface of the cup body of the evaporation-calcination cup is provided with a limiting block.
According to one embodiment, the openable sealing connection between the exhaust pipe cover and the exhaust pipe can be a threaded connection and sealed by a sealing ring.
Further, the sealing ring may be a graphite sealing ring.
According to one embodiment, the modular high level waste liquid evaporation-calciner comprises a thermocouple for measuring the furnace temperature.
The modular high-level radioactive waste liquid evaporation-calcining furnace adopts a modular design, is easy to assemble, disassemble and transfer the furnace lining module and the evaporation-calcining module integrally in a modular manner through a manipulator under the condition of strong radioactivity in a hot chamber, is very convenient to operate and maintain, has reliable performance, better realizes the operation of the manipulator in the whole process, and meets the medium-long-distance operation requirement of radioactive waste treatment.
Specifically, the evaporation-calcination module adopts a cup-cover-pipe integrated modular structure, and the evaporation-calcination module can be directly sealed after the evaporation-calcination module is subjected to evaporation-calcination treatment by adding high-level waste liquid for multiple times until a calcination solid is filled in the evaporation-calcination cup, and then the subsequent treatment procedure is carried out. The exhaust pipe of the evaporation-calcination module is opened outside the calciner, and the furnace body part except the evaporation-calcination module is not contacted with the radioactive waste, so that the contamination area is strictly controlled, and the amount of the radioactive waste is effectively reduced. The cup-cover-pipe structure of the evaporation-calcination module has a good sealing effect, so that the radioactive wastes contained in the evaporation-calcination module can not be subjected to safety accidents such as accidental diffusion and contamination in the operation and transfer processes of the manipulator, and the evaporation-calcination module has good safety and reliability.
Drawings
Fig. 1 is a schematic view of a modular high level waste liquid evaporation-calciner according to an embodiment of the invention.
Reference numerals: 1. the furnace comprises a furnace shell, 2 heating wires, 3 a furnace lining module placing port, 4 a furnace lining shell, 5 a heating chamber, 6 an evaporation-calcination cup placing port, 7 lifting lugs, 8 a cup body, 9 a cup cover, 10 an exhaust pipe, 11 an exhaust pipe operating handle, 12 an exhaust pipe cover, 13 an exhaust pipe cover operating handle, 14 a heat preservation chamber, 15 heat preservation materials, 16 a sealing ring and 17 a thermocouple.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of embodiments of the invention and should not be construed as limiting the invention. The various components in the drawings are not to scale in order to clearly illustrate the details of the various components, and so the proportions of the various components in the drawings should not be taken as limiting.
As shown in fig. 1, the modular high level discharge waste liquid evaporating-calcining furnace of the present invention comprises a furnace shell 1, a furnace lining module, a heating wire 2 and an evaporating-calcining module; the upper end of the furnace shell 1 is provided with a furnace lining module inlet 3; the furnace lining module comprises a furnace lining shell 4, a heating cavity 5 is formed in the furnace lining shell 4, an evaporation-calcination cup placing opening 6 is formed in the top of the furnace lining shell 4, and a hoisting component is arranged on the furnace lining shell 4; the heating wire 2 is arranged in the heating cavity 5; the evaporation-calcination module comprises an evaporation-calcination cup, the evaporation-calcination cup comprises a cup body 8 and a cup cover 9, the cup body 8 is connected with the cup cover 9 in an openable sealing mode, an exhaust pipe 10 is arranged on the cup cover 9, an exhaust pipe operating handle 11 is arranged on the exhaust pipe 10, an exhaust pipe cover 12 is arranged on an outer opening of the exhaust pipe 10, the exhaust pipe cover 12 is connected with the exhaust pipe 10 in an openable sealing mode, and an exhaust pipe cover operating handle 13 is arranged on the exhaust pipe cover 12.
According to one example, the furnace shell 1, the lining shell 4, the transpiration-calcination cup, and the exhaust pipe 10 can all be made of stainless steel.
Furthermore, the stainless steel material can be 310S stainless steel or 316L stainless steel.
According to one example, the furnace shell 1 is provided with a holding chamber 14 at the bottom, and the holding chamber 14 is filled with a holding material.
Further, the heat insulation material can be heat insulation cotton.
According to an example, the inner wall surface of the lining shell 4 may be coated with a heat insulating material.
Further, the heat insulation material can be heat insulation cotton.
According to an example, the hoisting member may be a lifting lug.
According to one example, the modular high level waste liquid evaporating-calcining furnace comprises a dust cover adapted to the inlet opening 6 of the evaporating-calcining cup for preventing dust when the evaporating-calcining cup is not inserted, and for removing it during operation.
According to an example, the evaporation-calcination cup body 8 is of an inner-layer structure and an outer-layer structure, the outer layer is made of stainless steel, and the inner layer is made of metal tantalum, so that the high temperature resistance, the corrosion resistance and the radiation resistance of the evaporation-calcination cup are improved.
Furthermore, the stainless steel layer at the bottom of the evaporation-calcination cup is provided with heat dissipation holes, so that deformation can be more effectively resisted in the subsequent storage process, and heat dissipation is facilitated.
According to an example, the openable sealing connection between the cup body 8 and the cup cover 9 of the evaporation-calcination cup can be a threaded connection and sealed by a sealing ring.
Further, the sealing ring may be a graphite sealing ring.
According to an example, the outer surface of the cup body 8 of the evaporation-calcination cup is provided with a limiting block to limit the evaporation-calcination cup.
According to an example, the openable sealing connection between the exhaust pipe cover 12 and the exhaust pipe 10 may be a threaded connection and sealed with a sealing ring.
Further, the sealing ring may be a graphite sealing ring.
According to one example, the modular high level waste liquid evaporation-calciner comprises a thermocouple 17 for measuring the furnace temperature.
According to an exemplary modular high level emission waste liquid evaporating and calcining furnace, the high level emission waste liquid is evaporated and calcined, and the treatment process is as follows:
firstly, under the operation of a manipulator, a cup cover 9 of an evaporation-calcination cup is unscrewed by rotating an exhaust pipe operating handle 11, and a proper amount of high-volume waste liquid is filled into a cup body 8 of the evaporation-calcination cup; then, the cover 9 of the evaporation-calcination cup is screwed down by rotating the exhaust pipe operating handle 11 by a manipulator.
Removing a dust cover on the evaporation-calcination cup inlet 6 by using a manipulator, and placing part of the evaporation-calcination cup body 8 into the heating cavity 5 through the evaporation-calcination cup inlet 6; the exhaust pipe cover operating handle 13 is turned by a robot hand to remove the exhaust pipe cover 12, and then the exhaust gas discharge pipe is connected to the exhaust pipe 10 (the joint structure of the exhaust gas discharge pipe to the exhaust pipe 10 may be similar to that of the exhaust pipe cover 12).
Setting the heating temperature, heating the evaporation-calcination cup by the heating wire 2, and evaporating and calcining the high-level radioactive waste liquid in the cup body 8 to form a solid matter.
And step four, stopping heating, and after the evaporation-calcination cup is cooled, removing the tail gas discharge pipe through the manipulator, and covering the exhaust pipe cover 12.
And step five, repeating the operation from the step one to the step four for a plurality of times until the solid radioactive waste is basically filled in the inner space of the cup body 8 of the evaporation-calcination cup, and stopping the operation. The resulting evaporation-calcination module with the solid radioactive waste sealed is directly handed over to a subsequent treatment and disposal procedure.
Because the modular high-level discharge waste liquid evaporating-calcining furnace adopts the modular structural design, if the local damage condition occurs in the treatment process, the problem can be solved by directly replacing the corresponding module through the manipulator (according to an example, the damage of the heating wire 2 can be solved by replacing the furnace lining module), the replacement operation is simple and quick, and the influence on the treatment process is small.
Although a few embodiments in accordance with the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. A modular high-level radioactive waste liquid evaporation-calcinator is characterized in that: the modular high-level radioactive waste liquid evaporation-calcining furnace comprises a furnace shell, a furnace lining module, a heating wire and an evaporation-calcining module; the upper end of the furnace shell is provided with a furnace lining module inlet; the furnace lining module comprises a furnace lining shell, a heating cavity is formed in the furnace lining shell, an evaporation-calcination cup placing opening is formed in the top of the furnace lining shell, and a hoisting component is arranged on the furnace lining shell; the heating wire is arranged in the heating cavity; the evaporation-calcination module comprises an evaporation-calcination cup, the evaporation-calcination cup comprises a cup body and a cup cover, the cup body and the cup cover are in openable sealing connection, an exhaust pipe is arranged on the cup cover, an exhaust pipe operating handle is arranged on the exhaust pipe, an exhaust pipe cover is arranged on an outer opening of the exhaust pipe, the exhaust pipe cover and the exhaust pipe are in openable sealing connection, and an exhaust pipe cover operating handle is arranged on the exhaust pipe cover.
2. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: the furnace shell bottom is equipped with the heat preservation chamber, packs thermal insulation material in the heat preservation chamber.
3. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: and the inner wall of the furnace lining shell is coated with a heat-insulating material.
4. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: the modular high-level radioactive waste liquid evaporating and calcining furnace comprises a dustproof cover matched with the accommodating port of the evaporating and calcining cup.
5. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: the cup body of the evaporation-calcination cup is of an inner-layer structure and an outer-layer structure, wherein the outer layer is made of stainless steel, and the inner layer is made of metal tantalum.
6. The modular high level radioactive waste liquid evaporation-calciner according to claim 5, characterized in that: the stainless steel layer at the bottom of the evaporation-calcination cup is provided with heat dissipation holes.
7. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: the openable sealing connection between the evaporation-calcination cup body and the cup cover can be threaded connection and sealed by a sealing ring.
8. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: the openable sealing connection between the exhaust pipe cover and the exhaust pipe can be threaded connection and sealed by a sealing ring.
9. The modular high level radioactive waste liquid evaporation-calciner according to claim 7 or 8, characterized in that: the sealing ring is a graphite sealing ring.
10. The modular high level radioactive waste liquid evaporation-calciner according to claim 1, characterized in that: the modular high level waste liquid evaporating-calcining furnace includes a thermocouple for measuring the temperature of the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399822.XA CN108645232B (en) | 2018-04-28 | 2018-04-28 | Modular high-level radioactive waste liquid evaporation-calcining furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810399822.XA CN108645232B (en) | 2018-04-28 | 2018-04-28 | Modular high-level radioactive waste liquid evaporation-calcining furnace |
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| CN108645232A CN108645232A (en) | 2018-10-12 |
| CN108645232B true CN108645232B (en) | 2020-04-14 |
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| CN201810399822.XA Active CN108645232B (en) | 2018-04-28 | 2018-04-28 | Modular high-level radioactive waste liquid evaporation-calcining furnace |
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| CN110397941A (en) * | 2019-08-15 | 2019-11-01 | 南通山剑防腐科技有限公司 | The incinerator and its operation process of dioxin are not generated |
| CN111879429A (en) * | 2020-07-01 | 2020-11-03 | 中国原子能科学研究院 | Device and method for multipoint temperature measurement of rotary calcining furnace for radioactive waste liquid treatment |
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| CN2286650Y (en) * | 1997-01-29 | 1998-07-29 | 浙江大学 | Universal connector of reagent bottle |
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| CN104990411A (en) * | 2015-07-06 | 2015-10-21 | 中国核电工程有限公司 | Heating furnace structure |
| CN106885473A (en) * | 2015-12-15 | 2017-06-23 | 中核四○四有限公司 | Plutonium product drying roaster |
| KR101726131B1 (en) * | 2016-03-24 | 2017-04-12 | 윤환석 | Waste cable melting furnace of circulation type |
| CN206094897U (en) * | 2016-10-17 | 2017-04-12 | 中国神华能源股份有限公司 | Calcining furnace |
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