CN112133465B - Radioactive waste resin recovery system and method - Google Patents
Radioactive waste resin recovery system and method Download PDFInfo
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- CN112133465B CN112133465B CN202011007897.2A CN202011007897A CN112133465B CN 112133465 B CN112133465 B CN 112133465B CN 202011007897 A CN202011007897 A CN 202011007897A CN 112133465 B CN112133465 B CN 112133465B
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- waste resin
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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
- G21F9/04—Treating liquids
- G21F9/20—Disposal of liquid waste
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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
- G21F9/04—Treating liquids
- G21F9/20—Disposal of liquid waste
- G21F9/22—Disposal of liquid waste by storage in a tank or other container
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- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a radioactive waste resin reclaiming system and a method, wherein the reclaiming system comprises a reclaiming device, a waste resin collecting tank and a control system; the reclaiming device comprises a stirring device and a feeding pump, and the stirring device is arranged in the waste resin storage tank through the top structure of the waste resin storage tank; the waste resin collecting tank is communicated with the waste resin storage tank through a pipeline, the feeding pump is installed on the pipeline between the waste resin storage tank and the waste resin collecting tank, and the waste resin collecting tank is communicated with the treatment equipment through a pipeline; the control system comprises a controller and a plurality of liquid level sensors, wherein the liquid level sensors are arranged in the waste resin storage tank and the waste resin collecting tank, and the liquid level sensors and the feeding pump are electrically connected with the controller. The reclaiming system and the method can be used for reclaiming the waste resin storage in the tank, and are particularly suitable for reclaiming the waste resin storage in the tank of old nuclear facilities.
Description
Technical Field
The invention relates to the technical field of radioactive waste resin and waste liquid treatment of nuclear facilities, in particular to a radioactive waste resin recovery system and a method.
Background
The application process of nuclear energy inevitably generates radioactive waste liquid, and the radioactive waste liquid must be further treated due to industrial particularity, so that the emission standard is met, and the environment is effectively protected. For waste liquid with low radioactive pollution, ion exchange treatment is often adopted. After ion exchange, the resin has radioactivity, and before post-treatment of the waste resin, the waste resin is stored in a tank for a certain period and a certain amount and then is subjected to corresponding centralized treatment. The old nuclear facilities do not consider the method for taking out the waste resin from the tank, or because the original design process method fails in the long term, the waste resin in the tank is urgently taken back as the capacity of the tank is close to full capacity.
Therefore, how to efficiently, safely and reliably realize the recycling of the waste resin in the tank is a requirement in the industry and is also necessary.
Disclosure of Invention
The invention aims to provide a system and a method for reclaiming radioactive waste resin, which are used for reclaiming waste resin storage in a tank, and are particularly suitable for reclaiming the waste resin storage in the tank of old nuclear facilities.
The invention is realized by the following technical scheme:
a radioactive waste resin reclaiming system comprises a reclaiming device, a waste resin collecting tank and a control system;
the reclaiming device comprises a stirring device and a feeding pump, and the stirring device is arranged in the waste resin storage tank through the top structure of the waste resin storage tank;
the waste resin collecting tank is communicated with the waste resin storage tank through a pipeline, the feeding pump is installed on the pipeline between the waste resin storage tank and the waste resin collecting tank, and the waste resin collecting tank is communicated with the treatment equipment through a pipeline;
the control system comprises a controller and a plurality of liquid level sensors, wherein the liquid level sensors are arranged in the waste resin storage tank and the waste resin collecting tank, and the liquid level sensors and the feeding pump are electrically connected with the controller.
Waste resin is stored in the tank, and the tank is interior all to have certain waste liquid usually, prevents that waste resin from hardening, and when static, waste resin deposits in the tank bottom portion, and the upper strata is the waste liquid, therefore waste resin need stir waste resin for the suspended state earlier before retrieving, just can take out the tank with waste resin back smoothly.
The liquid level sensor is used for sensing the liquid level conditions in the waste resin storage tank and the waste resin collecting tank in real time, transmitting liquid level signals to the controller, and sending out an instruction to close the feeding pump by the controller after the waste resin storage tank is evacuated or the waste resin collecting tank is full; the withdrawing device is arranged above a manhole of the waste resin storage tank.
The reclaiming system can stir the waste resin in the waste resin storage tank and convey the waste resin to the waste resin collecting tank to realize the reclaiming of the waste resin in the waste resin storage tank, and then convey the waste resin in the waste resin collecting tank to subsequent treatment equipment as required, so that the reclaiming of the waste resin in the tank of the old nuclear facility is realized.
The invention can be used for efficiently, safely and reliably retrieving and conveying the waste resin in the tank, and can be controlled by the controller to reduce the irradiation dose of personnel.
Furthermore, an overflow port is arranged on the waste resin collecting tank and is communicated with the waste resin storage tank through an overflow pipe.
The excessive waste liquid can be returned to the waste resin storage tank by arranging the overflow port and the overflow pipe.
Furthermore, a filter is arranged on the overflow pipe close to the overflow port, and can filter the waste resin.
Further, still include the air compressor machine, the air compressor machine passes through the pipeline and is connected with the overflow pipe, and this pipeline sets up in the filter rear end with overflow pipe hookup location.
The rear end of the present invention is with respect to the direction of flow of the waste liquid.
The invention uses compressed air to perform back flushing on the overflow port filter of the waste resin collecting tank, thereby preventing the resin from blocking the filter.
Further, an overflow port is provided at an upper portion of the waste resin collecting tank.
Further, still include the washing water tank, it is used for storing demineralized water to wash the water tank, wash the water tank and retrieve the pipeline intercommunication of system
The conveying pipeline is cleaned by using the demineralized water in the cleaning water tank, so that the waste resin is prevented from blocking the conveying pipeline.
Further, the cleaning water tank is communicated with the demineralized water storage tank through a pipeline.
Further, be provided with rabbling mechanism in the useless resin collecting vat.
The waste resin collecting tank has a stirring function and can prevent resin from precipitating.
Further, tail gas in the waste resin collecting tank enters a tail gas processor for processing through a pipeline.
Furthermore, the pipelines of the retrieval system are all quick-release steel pipes.
The retrieval method based on the radioactive waste resin retrieval system comprises the following steps:
s1, communicating the withdrawing system with a waste resin storage tank;
s2, starting a retrieval device, and stirring the waste resin in the waste resin storage tank to enable the waste resin to reach a suspension state;
s3, starting a feeding pump of the withdrawing device, and conveying the waste resin in the waste resin storage tank to the waste resin collecting tank;
s4, monitoring the liquid levels in the waste resin storage tank and the waste resin collecting tank in real time by the liquid level sensor, and when the waste resin storage tank is evacuated or the waste resin collecting tank is full of liquid, giving an instruction to close the feeding pump by control;
and S5, conveying the waste resin of the waste resin collecting tank to subsequent processing equipment according to requirements.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the reclaiming system can stir the waste resin in the waste resin storage tank and convey the waste resin to the waste resin collecting tank to realize the reclaiming of the waste resin in the waste resin storage tank, and then convey the waste resin in the waste resin collecting tank to subsequent treatment equipment as required, so that the reclaiming of the waste resin in the tank of the old nuclear facility is realized.
2. The invention can be used for efficiently, safely and reliably retrieving and conveying the waste resin in the tank, and can be controlled by the controller to reduce the irradiation dose of personnel.
3. The overflow port and the overflow pipe are arranged, so that redundant waste liquid can flow back to the waste resin storage tank; a filter is arranged on the overflow pipe close to the overflow port and can filter waste resin; and compressed air is used for carrying out back flushing on an overflow port filter of the waste resin collecting tank, so that the filter is prevented from being blocked by resin.
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 embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of a retrieval system of the present invention.
Reference numbers and corresponding part names in the drawings:
1-a waste resin storage tank, 2-a recovery device, 3-a waste resin collecting tank, 4-a cleaning water tank, 5-a stirring device, 6-an overflow pipe, 7-a filter, 8-an air compressor, 9-a demineralized water storage tank, 10-a tail gas treater and 11-treatment equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1, a radioactive spent resin reclaiming system comprises a reclaiming device 2, a spent resin collecting tank 3 and a control system;
the reclaiming device 2 comprises a stirring device 5 and a feeding pump, and the stirring device 5 is arranged in the waste resin storage tank 1 through the top structure of the waste resin storage tank 1;
the waste resin collecting tank 3 is communicated with the waste resin storage tank 1 through a pipeline, the feeding pump is installed on the pipeline between the waste resin storage tank 1 and the waste resin collecting tank 3, and the waste resin collecting tank 3 is communicated with the treatment equipment 11 through a pipeline;
the control system comprises a controller and a plurality of liquid level sensors, wherein the liquid level sensors are arranged in the waste resin storage tank 1 and the waste resin collecting tank 3, and the liquid level sensors and the feeding pump are electrically connected with the controller.
The retrieval method of the embodiment comprises the following steps:
s1, communicating the withdrawing system with the waste resin storage tank 1;
s2, starting the reclaiming device 2 to stir the waste resin in the waste resin storage tank 1 to enable the waste resin to reach a suspension state;
s3, starting a feeding pump of the withdrawing device 2, and conveying the waste resin in the waste resin storage tank 1 to the waste resin collecting tank 3;
s4, monitoring the liquid levels in the waste resin storage tank 1 and the waste resin collecting tank 3 in real time by a liquid level sensor, and when the waste resin storage tank 1 is evacuated or the waste resin collecting tank 3 is full of liquid, controlling to send out an instruction to close the feeding pump;
s5, conveying the waste resin in the waste resin collecting tank 3 to subsequent treatment equipment 11 as required, and enabling the tail gas in the waste resin collecting tank 3 to enter a tail gas processor 10 for treatment through a pipeline.
Example 2:
as shown in fig. 1, the present embodiment is based on embodiment 1, an overflow port is provided on the waste resin collecting tank 3, and the overflow port is communicated with the waste resin storage tank 1 through an overflow pipe 6; a filter 7 is arranged on the overflow pipe 6 and close to the overflow port; the filter is characterized by further comprising an air compressor 8, wherein the air compressor 8 is connected with the overflow pipe 6 through a pipeline, and the connecting position of the pipeline and the overflow pipe 6 is arranged at the rear end of the filter 7; the overflow port is provided at the upper portion of the waste resin collecting tank 3.
The retrieval method of the embodiment comprises the following steps:
s1, communicating the withdrawing system with the waste resin storage tank 1;
s2, starting the reclaiming device 2 to stir the waste resin in the waste resin storage tank 1 to enable the waste resin to reach a suspension state;
s3, starting a feeding pump of the withdrawing device 2, and conveying the waste resin in the waste resin storage tank 1 to the waste resin collecting tank 3;
s4, refluxing redundant waste liquid in the waste resin collecting tank 3 to the waste resin storage tank 1 through an overflow pipe 6, and filtering waste resin by arranging a filter 7 at an overflow port;
s5, monitoring the liquid levels in the waste resin storage tank 1 and the waste resin collecting tank 3 in real time by a liquid level sensor, and when the waste resin storage tank 1 is evacuated or the waste resin collecting tank 3 is full of liquid, controlling to send out an instruction to close the feeding pump;
s6, starting the air compressor 8, and performing back blowing on the filter 7 to prevent the filter 7 from being blocked by resin;
s7, conveying the waste resin in the waste resin collecting tank 3 to subsequent treatment equipment 11 as required, and enabling the tail gas in the waste resin collecting tank 3 to enter a tail gas processor 10 for treatment through a pipeline.
Example 3:
as shown in fig. 1, this embodiment is based on embodiment 1, and further includes a cleaning water tank 4, where the cleaning water tank 4 is used for storing demineralized water, and the cleaning water tank 4 is communicated with a pipeline of a retrieval system; the cleaning water tank 4 is communicated with a demineralized water storage tank 9 through a pipeline.
In this embodiment, the transfer line is cleaned using the demineralized water in the cleaning water tank 4, and the waste resin is prevented from clogging the transfer line.
Example 4:
as shown in fig. 1, this embodiment is based on any one of embodiment 1 to embodiment 3, and a stirring mechanism is provided in the waste resin collecting tank 3; and pipelines of the retrieval system are all quick-release steel pipes.
In the present embodiment, the waste resin collecting tank 3 has a stirring function, and precipitation of resin can be prevented.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A radioactive waste resin reclaiming system is characterized by comprising a reclaiming device (2), a waste resin collecting tank (3) and a control system;
the reclaiming device (2) comprises a stirring device (5) and a feeding pump, and the stirring device (5) is arranged in the waste resin storage tank (1) through the top structure of the waste resin storage tank (1);
the waste resin collecting tank (3) is communicated with the waste resin storage tank (1) through a pipeline, the feeding pump is installed on the pipeline between the waste resin storage tank (1) and the waste resin collecting tank (3), and the waste resin collecting tank (3) is communicated with the treatment equipment (11) through a pipeline;
the control system comprises a controller and a plurality of liquid level sensors, wherein the liquid level sensors are installed in the waste resin storage tank (1) and the waste resin collecting tank (3), and the liquid level sensors and the feeding pump are electrically connected with the controller.
2. A radioactive spent resin recovery system according to claim 1, wherein the spent resin collecting tank (3) is provided with an overflow port, and the overflow port is communicated with the spent resin storage tank (1) through an overflow pipe (6).
3. A radioactive spent resin retrieval system according to claim 2, wherein a filter (7) is provided on the overflow pipe (6) near the overflow port.
4. The radioactive spent resin recovery system according to claim 3, further comprising an air compressor (8), wherein the air compressor (8) is connected to the overflow pipe (6) through a pipe, and the connection position of the pipe to the overflow pipe (6) is arranged at the rear end of the filter (7).
5. A radioactive spent resin recovery system according to claim 2, wherein the overflow port is provided at an upper portion of the spent resin collection tank (3).
6. The radioactive spent resin recovery system according to claim 1, further comprising a washing water tank (4), wherein the washing water tank (4) is used for storing demineralized water, and the washing water tank (4) is communicated with a pipeline of the recovery system.
7. A radioactive spent resin retrieval system according to claim 6, wherein the washing water tank (4) is communicated with the demineralized water storage tank (9) through a pipe.
8. A radioactive spent resin recovery system according to claim 1, wherein a stirring mechanism is provided in the spent resin collection tank (3).
9. The radioactive spent resin recovery system according to claim 1, wherein the exhaust gas in the spent resin collecting tank (3) enters the exhaust gas processor (10) through a pipeline for processing.
10. The retrieval method of a radioactive spent resin retrieval system according to any one of claims 1 to 8, comprising the steps of:
s1, communicating the reclaiming system with the waste resin storage tank (1);
s2, starting a retrieval device (2) to stir the waste resin in the waste resin storage tank (1) to enable the waste resin to reach a suspension state;
s3, starting a feeding pump of the withdrawing device (2), and conveying the waste resin in the waste resin storage tank (1) to the waste resin collecting tank (3);
s4, monitoring liquid levels in the waste resin storage tank (1) and the waste resin collecting tank (3) in real time by a liquid level sensor, and when the waste resin storage tank (1) is evacuated or the waste resin collecting tank (3) is full of content, controlling to send an instruction to close the feeding pump;
s5, conveying the waste resin of the waste resin collecting tank (3) to a subsequent processing device (11) according to requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007897.2A CN112133465B (en) | 2020-09-23 | 2020-09-23 | Radioactive waste resin recovery system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011007897.2A CN112133465B (en) | 2020-09-23 | 2020-09-23 | Radioactive waste resin recovery system and method |
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| CN112133465A CN112133465A (en) | 2020-12-25 |
| CN112133465B true CN112133465B (en) | 2022-02-11 |
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