CN112133466A - Radioactive waste resin recovery device and method - Google Patents
Radioactive waste resin recovery device and method Download PDFInfo
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- CN112133466A CN112133466A CN202011007904.9A CN202011007904A CN112133466A CN 112133466 A CN112133466 A CN 112133466A CN 202011007904 A CN202011007904 A CN 202011007904A CN 112133466 A CN112133466 A CN 112133466A
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- Prior art keywords
- storage tank
- waste resin
- stirring
- waste
- pump
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
Abstract
The invention discloses a device and a method for reclaiming radioactive waste resin, wherein the reclaiming device comprises a shielding cover, the shielding cover is arranged above a waste resin storage tank, and a stirring pump, a lifting mechanism, a feeding pump and a stirring rod are arranged in the shielding cover; the lifting mechanism is used for controlling the lifting of the stirring pump and the feeding pump, the stirring rod is of a hollow structure, the lower end of the stirring rod is a starting end, the bottom of the shielding cover is provided with a through hole for the stirring rod to pass through, and the stirring rod is inserted into the waste resin storage tank through a manhole at the top of the waste resin storage tank; the inlet of the stirring pump extends into the waste liquid layer in the waste resin storage tank, and the outlet of the stirring pump is communicated with the stirring rod; the inlet of the feeding pump extends into the resin layer in the waste resin storage tank, and the outlet of the feeding pump is communicated with the receiving tank of the waste resin treatment facility. The waste resin guiding device can be used for guiding out waste resin in the tank, has good sealing performance, and can avoid the problem of radioactive substance leakage in the process of guiding out the waste resin.
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 device and a method for recovering radioactive waste resin.
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 radioactive waste resin recovery device and a radioactive waste resin recovery method, which are used for guiding out waste resin in a tank, have good sealing performance and avoid the problem of radioactive substance leakage in the guiding-out process of the waste resin.
The invention is realized by the following technical scheme:
a radioactive waste resin recovery device comprises a shielding cover, wherein the shielding cover is detachably arranged above a waste resin storage tank, and a stirring pump, a lifting mechanism, a feeding pump and a stirring rod are arranged in the shielding cover;
the stirring rod is of a hollow structure, the lower end of the stirring rod is an open end, a through hole for the stirring rod to penetrate through is formed in the bottom of the shielding cover, the stirring rod is inserted into the waste resin storage tank through a manhole in the top of the waste resin storage tank, and a sealing structure is arranged between the stirring rod and the manhole;
an inlet of the stirring pump extends into the waste liquid layer in the waste resin storage tank, a sealing structure is arranged at the joint of the inlet of the stirring pump and the resin storage tank, and an outlet of the stirring pump is communicated with the stirring rod;
the inlet of the feeding pump extends into the resin layer in the waste resin storage tank, a sealing structure is arranged at the joint of the inlet of the feeding pump and the resin storage tank, and the outlet of the feeding pump is communicated with the receiving tank of the waste resin treatment facility through a pipeline.
Preferably, the stirring rod is of a sectional type quick-release and quick-connection structure, the length of the stirring rod can be increased or decreased according to the depth of the stirring rod inserted into the waste resin storage tank, so that the resin in the area can be intelligently selected to be quickly stirred and suspended, and the resin in the waste resin storage tank can be completely stirred and suspended.
The stirring device provided by the invention can be used for stirring the waste resin in the waste resin storage tank under the combined action of the stirring pump and the stirring rod, is different from a conventional stirring device, is more beneficial to realizing the sealing of the connection position between the retrieval device and the resin storage tank, and avoids the leakage of the radioactive position in the waste resin storage tank when the waste resin is retrieved.
The stirring rod and the stirring pump are combined to stir the waste resin in the waste resin storage tank, and then the waste resin in the waste resin storage tank can be directly led out through the feeding pump, so that the waste resin in the waste resin storage tank can be efficiently, safely and reliably recycled.
Further, the sealing structure is an annular sealing gasket.
The annular seal gasket can further improve the sealing performance.
Further, the sealed cover of annular is sealed to be established on sealed stirring rod, the sealed cover of annular is sealed to be filled up and is included hollow column sleeve, column sleeve's lower extreme outer wall forms annular pressure pad along radial outside extension.
The device further comprises a control system, wherein the control system comprises a controller and a liquid level sensor, the liquid level sensor is installed in the waste resin storage tank, the liquid level sensor is electrically connected with the controller, and the controller is electrically connected with the stirring pump, the lifting mechanism and the feeding pump.
The invention can carry out remote control by arranging the control system, thereby reducing the irradiated dose of personnel.
Further, the shield case is made of a lead plate.
The lead plate has a shielding function.
Furthermore, a channel for an operator to enter and exit is arranged on the side wall of the shielding cover, and a door is arranged on the channel in a matching mode.
The stirring pump, the lifting mechanism, the feeding pump and the stirring rod are convenient to overhaul through the arrangement.
Further, a lifting lug is arranged at the top of the shielding cover.
The whole withdrawing device is convenient to hoist.
Furthermore, the lifting mechanism is of a chain wheel and chain structure and can be prevented from slipping, is connected with a lifting point at the top of the stirring rod through a lifting hook and has a self-locking function, and the lifting mechanism is prevented from falling off.
Further, a shield cover is installed above a manhole of the waste resin storage tank by an expansion bolt.
The retrieval method based on the radioactive waste resin retrieval device comprises the following steps:
s1, installing a withdrawing device above the waste resin storage tank;
s2, checking the performances of the stirring pump, the lifting mechanism and the feeding pump;
s3, placing the lower end of the stirring rod into the bottom of the waste resin storage tank by using a lifting mechanism, placing the inlet of the stirring pump into a waste liquid layer in the waste resin storage tank, and placing the inlet of the feeding pump into a waste resin layer in the resin storage tank, wherein the area needs to be quickly stirred;
s4, starting a stirring pump, pumping the upper-layer waste liquid through an inlet of the stirring pump, enabling the upper-layer waste liquid to flow out through the lower end of a stirring rod, quickly stirring the waste resin in a quick stirring area in the waste resin storage tank, and then stirring the rest waste resin in the waste resin storage tank to enable the waste resin to reach a suspension state;
and S5, starting the feeding pump, extracting the mixed liquid of the waste resin and the waste liquid out of the waste resin storage tank through the inlet of the feeding pump, and conveying the mixed liquid to a receiving tank of a waste resin treatment facility through a pipeline of a withdrawing device.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the stirring device provided by the invention can be used for stirring the waste resin in the waste resin storage tank under the combined action of the stirring pump and the stirring rod, is different from a conventional stirring device, is more beneficial to realizing the sealing of the connection position between the retrieval device and the resin storage tank, and avoids the leakage of the radioactive position in the waste resin storage tank when the waste resin is retrieved.
2. The stirring rod and the stirring pump are combined to stir the waste resin in the waste resin storage tank, and then the waste resin in the waste resin storage tank can be directly led out through the feeding pump, so that the waste resin in the waste resin storage tank can be efficiently, safely and reliably recycled.
3. The withdrawing device is compact in structure and stable in performance.
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 structural diagram of the retrieval device of the present invention.
Reference numbers and corresponding part names in the drawings:
1-a shielding cover, 2-a stirring pump, 3-a lifting mechanism, 4-a lifting lug, 5-a feeding pump and 6-a stirring rod.
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, the radioactive waste resin recovery device comprises a shielding case 1, wherein the shielding case 1 is installed above a manhole of a waste resin storage tank through an expansion bolt, and a stirring pump 2, a lifting mechanism 3, a feeding pump 5 and a stirring rod 6 are arranged in the shielding case 1;
the upper end of hoisting mechanism 3 is installed at shield cover 1 top, hoisting mechanism 3 is used for controlling the lift of agitator pump 2, material loading pump 5, stirring rod 6 is hollow structure, just the lower extreme of stirring rod 6 is the beginning, the bottom of shield cover 1 is provided with the through-hole that is used for passing stirring rod 6, stirring rod 6 inserts in the useless resin storage tank through the manhole at useless resin storage tank top, be provided with seal structure between stirring rod 6 and the manhole, seal structure is the annular sealing gasket, the annular sealing gasket is used for realizing the sealed in the clearance between stirring rod 6 and the manhole, the annular sealing gasket cover is established on sealed stirring rod 6, the annular sealing gasket cover includes hollow column sleeve, the lower extreme outer wall of column sleeve forms the annular pad along radial outside extension, the annular sealing gasket is provided with a plurality of sizes, the stirring rod 6, the inlet of the stirring pump 2 and the inlet of the feeding pump 5 are respectively matched;
an inlet of the stirring pump 2 extends into a waste liquid layer in the waste resin storage tank, an outlet of the stirring pump 2 is communicated with the stirring rod 6, the inlet of the stirring pump 2 and the waste resin storage tank are sealed through an annular sealing gasket, the annular sealing gasket is sleeved on the inlet of the stirring pump 2, and the position where the outlet of the stirring pump 2 is communicated with the stirring rod 6 is arranged in the shielding cover 1;
the inlet of the feeding pump 5 extends into a resin layer in the waste resin storage tank, the inlet of the feeding pump 5 and the waste resin storage tank are sealed through an annular sealing gasket, the inlet of the stirring pump 2 is sleeved on the inlet of the feeding pump 5, and the outlet of the feeding pump 5 is communicated with a receiving tank of a waste resin treatment facility through a pipeline;
The retrieval method of the retrieval device in this embodiment includes the following steps:
s1, installing a withdrawing device above the waste resin storage tank;
s2, checking the performances of the stirring pump 2, the lifting mechanism 3 and the feeding pump 5;
s3, placing the lower end of the stirring rod 6 into a region needing rapid stirring at the bottom of the waste resin storage tank by using the lifting mechanism 3, placing the inlet of the stirring pump 2 in a waste resin layer in the waste resin storage tank, and placing the inlet of the feeding pump 5 in a waste resin layer in the resin storage tank;
s4, starting the stirring pump 2, pumping the upper-layer waste liquid through the inlet of the stirring pump 2, enabling the upper-layer waste liquid to flow out through the lower end of the stirring rod 6, rapidly stirring the waste resin in the rapid stirring area in the waste resin storage tank, and stirring the rest waste resin in the waste resin storage tank to enable the waste resin to reach a suspension state;
and S5, starting the feeding pump 5, extracting the mixed liquid of the waste resin and the waste liquid out of the waste resin storage tank through the inlet of the feeding pump 5, and conveying the mixed liquid to a receiving tank of a waste resin treatment facility through a pipeline of a withdrawing device.
In this embodiment, stirring of waste resin in the waste resin storage tank is realized through the combined action of the stirring pump 2 and the stirring rod 6, which is different from a conventional stirring device, and is more beneficial to realizing sealing of a connection position between the retrieval device and the resin storage tank, so that leakage of radioactive positions in the waste resin storage tank is avoided when the waste resin is retrieved.
In this embodiment, after the stirring of the waste resin in the waste resin storage tank is realized by the combined action of the stirring pump 2 and the stirring rod 6, the waste resin in the waste resin storage tank can be directly led out by the feeding pump 5, and the waste resin in the waste resin receiving tank can be efficiently, safely and reliably retrieved.
Example 2:
as shown in fig. 1, this embodiment is based on embodiment 1, and further includes a control system including a controller, a level sensor, the level sensor being installed in the waste resin storage tank, the level sensor being electrically connected to the controller, and the controller being electrically connected to the stirring pump 2, the lifting mechanism 3, and the feeding pump 5.
In this embodiment, by providing the control system, the retrieval device can be remotely controlled:
the liquid level in the waste resin storage tank is monitored in real time through the liquid level sensor, and when the liquid in the waste resin storage tank is pumped out, the feeding pump is automatically stopped through the controller.
Example 3:
as shown in fig. 1, this embodiment is based on embodiment 1 or embodiment 2, and the shielding case 1 is made of a lead plate; a passage for an operator to enter and exit is arranged on the side wall of the shielding case 1, and a door is arranged on the passage in a matching way; the top of the shielding case 1 is provided with a lifting lug 4.
In this embodiment, get back the device and have open closed passageway, make things convenient for personnel and equipment business turn over, have the hoisting point, make things convenient for equipment transportation, and the stereotype has the shielding effect, can shield certain radioactive ray.
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. The radioactive waste resin recovery device is characterized by comprising a shielding cover (1), wherein the shielding cover (1) is detachably arranged above a waste resin storage tank, and a stirring pump (2), a lifting mechanism (3), a feeding pump (5) and a stirring rod (6) are arranged in the shielding cover (1);
the lifting mechanism (3) is used for controlling the lifting of the stirring pump (2) and the feeding pump (5), the stirring rod (6) is of a hollow structure, the lower end of the stirring rod (6) is an open end, a through hole for penetrating through the stirring rod (6) is formed in the bottom of the shielding cover (1), the stirring rod (6) is inserted into the waste resin storage tank through a manhole in the top of the waste resin storage tank, and a sealing structure is arranged between the stirring rod (6) and the manhole;
an inlet of the stirring pump (2) extends into a waste liquid layer in the waste resin storage tank, a sealing structure is arranged at the joint of the inlet of the stirring pump (2) and the resin storage tank, and an outlet of the stirring pump (2) is communicated with the stirring rod (6);
the inlet of the feeding pump (5) extends into the resin layer in the waste resin storage tank, a sealing structure is arranged at the joint of the inlet of the feeding pump (5) and the resin storage tank, and the outlet of the feeding pump (5) is communicated with the receiving tank of the waste resin treatment facility through a pipeline.
2. A radioactive spent resin retrieval device according to claim 1, wherein the sealing structure is an annular packing.
3. The radioactive spent resin recovery device according to claim 2, wherein the annular sealing gasket is sleeved on the sealing stirring rod (6), the annular sealing gasket comprises a hollow cylindrical sleeve, and the outer wall of the lower end of the cylindrical sleeve extends outwards in the radial direction to form an annular pressing gasket.
4. The radioactive spent resin reclaiming device according to claim 1, further comprising a control system, wherein the control system comprises a controller and a liquid level sensor, the liquid level sensor is installed in the spent resin storage tank, the liquid level sensor is electrically connected with the controller, and the controller is electrically connected with the stirring pump (2), the lifting mechanism (3) and the feeding pump (5).
5. The radioactive spent resin retrieval device of claim 1, wherein the shield (1) is made of lead plate.
6. The radioactive spent resin retrieval device according to claim 1, wherein the side wall of the shielding case (1) is provided with a passageway for operator access, and the passageway is provided with a door.
7. The radioactive spent resin recovery device according to claim 1, wherein the top of the shielding case (1) is provided with a lifting lug (4).
8. The radioactive spent resin recovery device according to claim 1, wherein the lifting mechanism (3) is of a chain wheel and chain structure, and the lifting mechanism (3) is connected with a lifting point at the top of the stirring rod (6) through a lifting hook.
9. The radioactive spent resin retrieval device according to any one of claims 1 to 8, wherein the shield (1) is installed above a manhole of a spent resin storage tank by means of an expansion bolt.
10. The method for recovering a radioactive spent resin recovery apparatus according to any one of claims 1 to 9, comprising the steps of:
s1, installing a withdrawing device above the waste resin storage tank;
s2, checking the performances of the stirring pump (2), the lifting mechanism (3) and the feeding pump (5);
s3, placing the lower end of the stirring rod (6) into the bottom of the waste resin storage tank by using a lifting mechanism (3), placing the inlet of the stirring pump (2) into a waste liquid layer in the waste resin storage tank, and placing the inlet of the feeding pump (5) into a waste resin layer in the resin storage tank;
s4, starting the stirring pump (2), pumping the upper-layer waste liquid through the inlet of the stirring pump (2), and then enabling the upper-layer waste liquid to flow out through the lower end of the stirring rod (6) to stir the waste resin in the waste resin storage tank so as to enable the waste resin to reach a suspension state;
and S5, starting the feeding pump (5), extracting the mixed liquid of the waste resin and the waste liquid out of the waste resin storage tank through the inlet of the feeding pump (5), and conveying the mixed liquid to a receiving tank of a waste resin treatment facility through a pipeline of a withdrawing device.
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| CN202011007904.9A CN112133466B (en) | 2020-09-23 | 2020-09-23 | Radioactive waste resin recovery device and method |
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| CN202011007904.9A CN112133466B (en) | 2020-09-23 | 2020-09-23 | Radioactive waste resin recovery device and method |
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| CN112133466A true CN112133466A (en) | 2020-12-25 |
| CN112133466B CN112133466B (en) | 2022-02-11 |
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