CN114242287A - Radioactive waste resin recovery device and method - Google Patents
Radioactive waste resin recovery device and method Download PDFInfo
- Publication number
- CN114242287A CN114242287A CN202111370232.2A CN202111370232A CN114242287A CN 114242287 A CN114242287 A CN 114242287A CN 202111370232 A CN202111370232 A CN 202111370232A CN 114242287 A CN114242287 A CN 114242287A
- Authority
- CN
- China
- Prior art keywords
- sealed container
- waste resin
- pipeline
- water
- free water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- G21F5/00—Transportable or portable shielded containers
- G21F5/002—Containers for fluid radioactive wastes
-
- 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
- G21F9/06—Processing
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a radioactive waste resin recovery device and a method, belonging to the technical field of radioactive waste treatment, wherein the device comprises a lead shielding sealed container, wherein the upper end of the lead shielding sealed container is communicated with a feeding pipeline and a drainage pipeline and is respectively communicated with the upper parts of a waste resin storage tank and a buffer tank; the upper part of the buffer tank is also communicated with a vacuum pipeline, and the other end of the vacuum pipeline is connected with an air inlet of a water ring vacuum pump; under the action of negative pressure formed by a water ring vacuum pump, waste resin and free water in a waste resin storage tank enter a lead shielding sealed container through a feeding pipeline; the terminal filter screen that is provided with of drainage pipe, when the waste resin in the lead shielding sealed container and free water mixed material bury the filter screen, free water passes through drainage pipe and discharges to the buffer tank in, realizes the drop of free water and removes. The invention can convey the waste resin and the free water from the waste resin storage tank/groove into the shielding container, discharge the free water from the shielding container, and retain the waste resin in the closed shielding container for safe transportation.
Description
Technical Field
The invention belongs to the technical field of radioactive waste treatment, and particularly relates to a device and a method for recovering radioactive waste resin.
Background
The safe disposal of radioactive waste resins containing organic substances is one of the difficulties and hot spots of the current domestic radioactive waste management. Radioactive spent resin from nuclear plant operations is collected in a spent resin storage tank/canister, typically containing a large amount of free water.
At present, research on the inorganic volume reduction treatment technology and equipment of radioactive waste resin is being carried out in China, and the technology and the equipment comprise a wet oxidation method, a supercritical water oxidation method, a steam reforming method and the like. These processes all involve the withdrawal of the spent resin from the storage tank/vat and transport to the vicinity of disposal means where it is transported as needed. At present, no relevant waste resin recycling and transferring device exists in China.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a radioactive waste resin recovery device and a radioactive waste resin recovery method, by which waste resin and free water can be conveyed into a shielding container from a waste resin storage tank/groove, the free water can be discharged from the shielding container, and the waste resin is retained in a closed shielding container for safe transportation.
In order to achieve the above purposes, the invention adopts a technical scheme that:
a radioactive waste resin withdrawing device comprises a lead shielding sealed container for transferring waste resin, a water ring vacuum pump for providing negative pressure and a buffer tank for collecting free water, wherein the upper end of the lead shielding sealed container is communicated with a feeding pipeline and a drainage pipeline, is communicated with an external waste resin storage tank through the feeding pipeline and is communicated with the upper part of the buffer tank through the drainage pipeline;
the upper part of the buffer tank is also communicated with a vacuum pipeline, the other end of the vacuum pipeline is connected with an air inlet of the water ring vacuum pump, and a water inlet and an air outlet of the water ring vacuum pump are connected with a water tank; under the action of negative pressure formed by the water ring vacuum pump, waste resin and free water in a waste resin storage tank are conveyed into the lead shielding sealed container through the feeding pipeline;
be located drainage pipe end in the lead shielded sealed container is provided with the filter screen that is used for intercepting useless resin granule, is used for working as useless resin and free water mixed material in the lead shielded sealed container bury during the filter screen, free water passes through drainage pipe discharges in the buffer tank, realize the drop removal of free water.
Further, in the radioactive waste resin recovery device, valves for controlling the on-off of the pipeline are arranged on the feeding pipeline close to the upper end of the lead shielding sealed container and on the drainage pipeline close to the upper end of the lead shielding sealed container.
Further, according to the above radioactive waste resin recovery device, the vacuum pipeline is provided with valves for controlling the on-off of the pipeline at the position close to the air inlet of the water ring vacuum pump and the water inlet pipeline of the water ring vacuum pump.
Further, as above radioactive waste resin reclaimer, the lead shielded sealed container upper end still is provided with the charge level indicator, the probe of charge level indicator inserts in the lead shielded sealed container, be used for real-time supervision the liquid level height of waste resin in the lead shielded sealed container.
Further, according to the above radioactive waste resin recovery device, a discharge pipeline is reserved at the upper end of the lead shielding sealed container, and a valve is arranged on the discharge pipeline and used for discharging the recovered waste resin to a corresponding facility for treatment in a subsequent process.
Further, as above radioactive waste resin withdrawing device, a glass window is arranged on the feeding pipeline, the drainage pipeline and the discharge pipeline at the upper end of the lead shielding sealed container, and the conveying condition of the waste resin and free water mixed suspension material in each pipeline is observed through the glass window.
Further, as for the radioactive waste resin recovery device, an exhaust pipeline is arranged at the upper end of the water tank, a filter is arranged on the exhaust pipeline, and radioactive aerosol generated by polluted water in the water tank is filtered and discharged to the air after being subjected to compliance through the filter.
Further, in the radioactive waste resin recovery device, the lower part of the water tank is connected with a waste liquid treatment system for discharging the polluted water in the water tank after the polluted water is treated in compliance.
Further, the radioactive waste resin recovery device is arranged on the movable support, and is convenient for integral transfer through a trailer or a forklift.
The waste resin recovery method based on the radioactive waste resin recovery device comprises the following steps:
starting a water ring vacuum pump, forming negative pressure in the lead shielding sealed container, and allowing waste resin and free water in the waste resin storage tank to enter the lead shielding sealed container under the action of the negative pressure;
when the mixed material of the waste resin and the free water entering the lead shielding sealed container is buried in the filter screen at the tail end of the drainage pipeline, the free water is discharged from the lead shielding sealed container through the drainage pipeline, and the discharged free water is collected in the buffer tank, so that the free water is drained;
and moving the radioactive waste resin withdrawing device through a trailer or a forklift, and transferring the waste resin withdrawn into the lead shielding sealed container to a treatment facility of a subsequent process.
The device and the method for recovering the radioactive waste resin have the following remarkable technical effects:
1) the invention provides a method for conveying waste resin from a storage tank/tank into a lead shielding sealed container by adopting a negative pressure hydraulic conveying method aiming at the characteristic that the content of free water in the waste resin stored in the storage tank/tank is high.
2) The invention adopts a negative pressure suction filtration method to remove free water entering a lead shielding sealed container.
3) The process and the device provided by the invention are not influenced by the type of the waste resin and the free water content, and can realize the recycling of the waste resin in various storage tanks/tanks.
4) The device provided by the invention can be designed in a modularized way, has the functions of radiation protection and mobility, and realizes safe transfer after the waste resin is retrieved.
5) The device provided by the invention can be matched with a waste resin wet oxidation system, and has obvious economical efficiency, safety and application prospect.
Drawings
FIG. 1 is a schematic structural view of a radioactive waste resin recovery apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of a process flow for recycling radioactive spent resin provided in an embodiment of the present invention;
in the figure, 1-lead shields the sealed container; 2-water ring vacuum pump; 3-a water tank; 4-a filter; 5, filtering the filter screen; 6-a level indicator; 7-glass window; 8-buffer tank.
Detailed Description
The invention is further described with reference to specific embodiments and drawings attached to the description.
Fig. 1 shows a schematic structural diagram of a radioactive spent resin reclaiming device provided in an embodiment of the present invention, and fig. 2 shows a schematic flow diagram of a process for reclaiming radioactive spent resin, as can be seen from the diagram, the device mainly comprises a lead shielding sealed container 1 for transporting spent resin, a water ring vacuum pump 2 and a buffer tank 8, wherein the upper end of the lead shielding sealed container 1 is communicated with a feed pipeline and a drain pipeline, is communicated with an external spent resin storage tank through the feed pipeline, and is communicated with the upper part of the buffer tank 8 through the drain pipeline; the upper part of the buffer tank 8 is also communicated with a vacuum pipeline, the other end of the vacuum pipeline is connected with the air inlet of the water ring vacuum pump 2, and the water inlet and the air outlet of the water ring vacuum pump 2 are connected with the water tank 3.
A valve v1 is arranged on the feed pipeline close to the upper end of the lead shielding sealed container 1, and a valve v3 is arranged on the drainage pipeline close to the upper end of the lead shielding sealed container 1; a valve v5 is arranged on the vacuum pipeline close to the air inlet of the water ring vacuum pump 2, and a valve v6 is arranged on the water inlet pipeline of the water ring vacuum pump 2.
The water ring vacuum pump 2 forms negative pressure in the lead shielding sealed container 1, and under the action of certain negative pressure, waste resin and free water in the waste resin storage tank are conveyed into the lead shielding sealed container 1 through a feeding pipeline and a valve v 1.
The end of the drainage pipeline positioned in the lead shielding sealed container 1 is provided with a filter screen 5 for intercepting waste resin particles. When the mixed material of the waste resin and the free water entering the lead shielding sealed container 1 is buried in the filter screen 5, the free water enters the drainage pipeline and is discharged from the lead shielding sealed container 1 through the valve v3, and the discharged free water is collected in the buffer tank 8, so that the free water is drained, and the maximum recovery amount of the waste resin is realized.
And a discharge pipeline is reserved at the upper end of the lead shielding sealed container 1, and a valve v2 is arranged on the discharge pipeline and used for discharging the retrieved waste resin to a corresponding facility for treatment in the subsequent process.
The upper end of the lead shielding sealed container 1 is also provided with a charge level indicator 6, and a probe of the charge level indicator 6 is inserted into the lead shielding sealed container 1, so that the liquid level height of waste resin in the lead shielding sealed container 1 can be monitored in real time, an alarm function is provided, and the recovery amount of the waste resin is controlled.
An exhaust pipeline is arranged at the upper end of the water tank 3, and a valve v7 and a filter 4 are arranged on the exhaust pipeline. The clean water in the water tank 3 is polluted by waste resin after being used for a period of time, and radioactive aerosol generated by the polluted water in the water tank can be discharged to the air after being filtered and regulated by the filter 4.
The high-level and the lower part of the water tank 3 are connected with a waste liquid treatment system through two pipelines, a valve v8 is arranged on the high-level pipeline, and after the high liquid level in the water tank is reached, the valve v8 is controlled to be opened to discharge redundant water to the waste liquid treatment system; the lower pipeline is provided with a valve v9 for controlling the polluted water in the water tank to be discharged into the waste liquid treatment system.
Whole device installs on movable support, is convenient for carry out whole the transfer through trailer or fork truck.
The process flow for recycling the waste resin by using the radioactive waste resin recycling device is as follows:
s1, waste resin recovery: under the action of negative pressure, the waste resin and free water in the storage tank/tank enter the lead shielding sealed container.
Before the waste resin is recovered, the valves v1, v3, v5 and v6 are opened, and the valve v2 is closed. And starting the water ring vacuum pump 2, and forming negative pressure in the lead shielding sealed container 1. When the negative pressure in the lead shielding sealed container 1 reaches a certain value, the waste resin and the free water in the storage tank/tank are conveyed into the lead shielding sealed container 1 through a feeding pipeline and a valve v1 under the negative pressure. The conveying condition of the mixed suspended material of the waste resin and the free water can be observed through the glass window 7. The level gauge 6 controls the amount of the recovered waste resin.
S2, free water draining: and (3) draining the free water entering the lead shielding sealed container 1, reducing the occupied space of the free water and realizing the maximum recovery amount of the waste resin.
The method comprises the following specific implementation steps: the free water is drained while the waste resin is withdrawn. When the mixed material of the waste resin and the free water entering the lead shielding sealed container 1 is buried in the filter screen 5, the free water enters the drainage pipeline and is discharged from the lead shielding sealed container 1 through the valve v3, and the discharged free water is collected in the buffer tank 8, so that the free water is drained.
S3, waste resin transfer: the radioactive waste resin recovery device is moved by a trailer or a forklift, and the waste resin recovered into the lead-shielded sealed container 1 is transferred to a treatment facility.
The invention provides a device and a method for recovering radioactive waste resin, which adopt a negative pressure hydraulic conveying method to convey waste resin and free water from a waste resin storage tank/groove into a shielding container, discharge the free water from the shielding container, and retain the waste resin in a closed shielding container for safe transportation. The device has the advantages of simple process, low cost and strong applicability, can receive the waste resin in the storage tank/tank remotely through the hose line, and is particularly suitable for the retrieval and transportation of the waste resin in the pit tank/tank which is difficult to access.
The above-described embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (10)
1. The radioactive waste resin recovery device is characterized by comprising a lead shielding sealed container (1) for transferring waste resin, a water ring vacuum pump (2) for providing negative pressure and a buffer tank (8) for collecting free water, wherein the upper end of the lead shielding sealed container (1) is communicated with a feeding pipeline and a drainage pipeline, is communicated with an external waste resin storage tank through the feeding pipeline, and is communicated with the upper part of the buffer tank (8) through the drainage pipeline;
the upper part of the buffer tank (8) is also communicated with a vacuum pipeline, the other end of the vacuum pipeline is connected with an air inlet of the water ring vacuum pump (2), and a water inlet and an air outlet of the water ring vacuum pump (2) are connected with a water tank (3); under the action of negative pressure formed by the water ring vacuum pump (2), waste resin and free water in a waste resin storage tank are conveyed into the lead shielding sealed container (1) through the feeding pipeline;
be located drainage pipe end in the lead shielding sealed container (1) is provided with filter screen (5) that are used for intercepting useless resin granule, is used for working as useless resin and free water mixed material in the lead shielding sealed container (1) bury during filter screen (5), free water passes through drainage pipe discharges to in buffer tank (8), realize the drop of free water.
2. The radioactive spent resin reclaiming device according to claim 1, wherein valves for controlling the on-off of the pipeline are arranged on the feeding pipeline close to the upper end of the lead shielding sealed container (1) and on the drainage pipeline close to the upper end of the lead shielding sealed container (1).
3. The radioactive spent resin reclaiming device according to claim 2, wherein valves for controlling the on-off of the water inlet pipeline of the water ring vacuum pump (2) and the water inlet pipeline of the water ring vacuum pump (2) are arranged on the vacuum pipeline.
4. The radioactive waste resin recovery device according to claim 3, wherein a level indicator (6) is further arranged at the upper end of the lead shielded and sealed container (1), and a probe of the level indicator (6) is inserted into the lead shielded and sealed container (1) and used for monitoring the liquid level height of the waste resin in the lead shielded and sealed container (1) in real time.
5. The radioactive spent resin reclaiming device according to claim 1, wherein a discharge pipeline is reserved at the upper end of the lead shielding sealed container (1), and a valve is arranged on the discharge pipeline and used for discharging the reclaimed spent resin to a corresponding facility for treatment in a subsequent process.
6. The radioactive spent resin reclaiming device according to claim 5, wherein a glass window (7) is provided on each of the feed pipe, the drain pipe and the discharge pipe at the upper end of the lead shielded and sealed container (1), and the conveying condition of the mixed suspended material of the spent resin and the free water in each pipe is observed through the glass window (7).
7. The radioactive spent resin recovery device according to claim 1, wherein an exhaust pipeline is arranged at the upper end of the water tank (3), a filter (4) is arranged on the exhaust pipeline, and radioactive aerosol generated by polluted water in the water tank (3) is filtered and discharged to the air after being regulated by the filter (4).
8. The radioactive spent resin recovery device according to claim 7, wherein a waste liquid treatment system is connected to a lower portion of the water tank (3) for discharging contaminated water in the water tank (3) after compliance.
9. The radioactive spent resin retrieval device of any one of claims 1-8, wherein the device is mounted on a movable support for integral transfer by a trailer or forklift.
10. A waste resin recovery method based on the radioactive waste resin recovery apparatus according to any one of claims 1 to 9, comprising the steps of:
starting a water ring vacuum pump, forming negative pressure in the lead shielding sealed container, and allowing waste resin and free water in the waste resin storage tank to enter the lead shielding sealed container under the action of the negative pressure;
when the mixed material of the waste resin and the free water entering the lead shielding sealed container is buried in the filter screen at the tail end of the drainage pipeline, the free water is discharged from the lead shielding sealed container through the drainage pipeline, and the discharged free water is collected in the buffer tank, so that the free water is drained;
and moving the radioactive waste resin withdrawing device through a trailer or a forklift, and transferring the waste resin withdrawn into the lead shielding sealed container to a treatment facility of a subsequent process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370232.2A CN114242287A (en) | 2021-11-18 | 2021-11-18 | Radioactive waste resin recovery device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370232.2A CN114242287A (en) | 2021-11-18 | 2021-11-18 | Radioactive waste resin recovery device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114242287A true CN114242287A (en) | 2022-03-25 |
Family
ID=80749973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111370232.2A Pending CN114242287A (en) | 2021-11-18 | 2021-11-18 | Radioactive waste resin recovery device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114242287A (en) |
-
2021
- 2021-11-18 CN CN202111370232.2A patent/CN114242287A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4436655A (en) | Process for the continuous purification of contaminated fluids and for conditioning the resulting concentrates | |
| CN105118540B (en) | Radioactive myocardial damage handling process | |
| CN211507142U (en) | Radioactive waste resin negative pressure conveying device | |
| CN104176693B (en) | A kind of nuclear power station resin transfer equipment | |
| US4738799A (en) | Permanent disposal of radioactive particulate waste | |
| CN114242287A (en) | Radioactive waste resin recovery device and method | |
| CN206295661U (en) | A kind of equipment for separating liquid from solid of leached soil solutions | |
| CN106734135A (en) | It is applied to the double pump multiphase extraction device and its control method of soil and groundwater remediation | |
| CN101625908A (en) | Boron recovery system of nuclear power plant | |
| CN114242286A (en) | Radioactive waste resin dehydration measurement feeding device | |
| CN206168050U (en) | Granule analysis waste solution recovery apparatus more than MOX micron order | |
| CN213887576U (en) | System for restoring organic contaminated soil by leaching process | |
| US10192648B2 (en) | Tank closure cesium removal | |
| CN215032284U (en) | Pile type elution repair system for contaminated soil | |
| CN105217922A (en) | A kind of mud quick dewatering drying device | |
| CN205903558U (en) | Continuous detoxification processing apparatus of dangerous incineration fly ash | |
| CN213983015U (en) | Tritium-containing heavy water conveying device | |
| KR100741417B1 (en) | Loading machines for ion exchange resin | |
| CN205413054U (en) | Cationic resin separation recovery system | |
| CN217211629U (en) | Radioactive waste resin sampling device | |
| CN210814008U (en) | Multistage organic solvent condensation recovery device | |
| CN204834068U (en) | Organic liquid water disposal system of radioactivity | |
| CN209334326U (en) | A kind of hard alloy mixed slurry transfer dish circulation cleaning device | |
| CN107362608A (en) | Ship derusting vacuum sewage recovery system | |
| CN206767907U (en) | A kind of bed mud elutes repair system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |