CN219591136U - Reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid - Google Patents
Reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid Download PDFInfo
- Publication number
- CN219591136U CN219591136U CN202222803944.5U CN202222803944U CN219591136U CN 219591136 U CN219591136 U CN 219591136U CN 202222803944 U CN202222803944 U CN 202222803944U CN 219591136 U CN219591136 U CN 219591136U
- Authority
- CN
- China
- Prior art keywords
- feed liquid
- heat exchanger
- fixed bed
- feed
- bed reactor
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid, which comprises a feed liquid storage tank (1), a feed pump (2), a heat exchanger (3), a fixed bed reactor (4), a gas-liquid separator (5) and a feed liquid receiving tank (7) which are sequentially communicated through pipelines; and a sampler (6) is arranged on a pipeline connected with the feed liquid receiving tank (7) through the gas-liquid separator (5). The fixed bed reactor adopts a spring compression mode to fix the catalytic bed layer, so that the bed layer is prevented from loosening due to long-time operation; the material liquid flowing mode of upper feeding and upper discharging is adopted, so that the material liquid leakage during disassembly is prevented; the fixed bed reactor adopts a heat preservation mode, the feed liquid is preheated by the heat exchanger, the reactor is not required to be heated, the fixed bed reactor is easy and convenient to disassemble, and the catalyst is convenient to replace.
Description
Technical Field
The utility model relates to a reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid, and belongs to the fields of nuclear power waste treatment and environmental protection.
Background
The nuclear power is a green low-carbon clean energy source with higher technical maturity, and is an important and preferable technical route for solving the energy problem for human beings in the future. However, the safety problem of the strong radioactive waste, namely spent fuel, is one of the main factors restricting the large-scale popularization and application of nuclear power. The nuclear power reactor has low overall utilization rate of nuclear fuel, the spent fuel containing unconverted uranium is an important nuclear element resource, and a closed cycle route of the nuclear fuel is adopted at present to separate, purify and further utilize the nuclear elements such as uranium, plutonium, neptunium and the like in the spent fuel. For example, PUREX procedure: dissolving the spent fuel rod by using nitric acid, extracting tributyl phosphate and n-dodecane organic diluent, and reducing and back-extracting by using reducing agents such as hydrazine nitrate and/or hydroxylamine nitrate to realize the separation, purification and enrichment of each nuclear element. In the process, a large amount of nitric acid waste liquid containing hydrazine nitrate is generated, and according to the principle of minimizing radioactive waste after spent fuel post-treatment, nitric acid is recycled in the subsequent process, and the residue after distillation is vitrified and solidified for deep burying treatment. The hydrazine nitrate and the hydroxylamine nitrate have strong reducibility, are high-energy-content easily-oxidized explosive substances, and are required to be removed in order to eliminate the explosion risk in the concentration treatment process of the waste liquid. The method for removing hydrazine nitrate and hydroxylamine nitrate mainly comprises the steps of adding an oxidant such as sodium nitrite or introducing dinitrogen tetroxide gas and the like, and oxidizing the hydrazine nitrate and the hydroxylamine nitrate into products such as nitrogen, water, nitrogen oxides and the like for removal, and has the following defects: the oxidant consumption is large, the cost is high, the reaction is extremely severe, and a certain safety risk exists; when sodium nitrite is used as an oxidant, new solid waste sodium nitrate is easy to generate; nitrogen dioxide availability is low and there is a risk of leakage. The mode of adopting hydrazine nitrate and hydroxylamine nitrate in the catalytic decomposition spent fuel waste liquid has the advantages of safety, high efficiency and economy, however, the spent fuel waste liquid is generally radioactive, and in practical application, the traditional reaction device is difficult to prevent the leakage of feed liquid when the catalyst is replaced, and the reaction process is a reaction of a large amount of in-situ gas production, so that the catalyst is easy to wear, the bed layer is loosened, and on the basis, the reaction device for preventing the catalyst bed from loosening and simply, conveniently and quickly replacing the catalyst needs to be provided.
Disclosure of Invention
Aiming at the characteristics of catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate for mass gas production and the characteristic of radioactivity of feed liquid, the utility model provides a reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid, which can be used for treating spent fuel waste liquid.
The utility model provides a reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid, which comprises a feed liquid storage tank (1), a feed pump (2), a heat exchanger (3), a fixed bed reactor (4), a gas-liquid separator (5) and a feed liquid receiving tank (7) which are sequentially communicated through pipelines;
a sampler (6) is arranged on a pipeline connected with the feed liquid receiving tank (7) through the gas-liquid separator (5);
the fixed bed reactor (4) comprises a reactor end cover (41) and a catalyst filling cylinder (44) which are arranged from top to bottom, the reactor end cover (41) is provided with a feed liquid inlet I (47) and a feed liquid outlet I (48), the feed liquid inlet I (47) is connected with the heat exchanger (3) through a pipeline, and the feed liquid outlet I (48) is connected with the gas-liquid separator (5) through a pipeline;
a stainless steel sieve plate (46) is arranged between the reactor end cover (41) and the catalyst filling cylinder (44), and a feed liquid distribution plate (45) is also arranged in the catalyst filling cylinder (44);
the fixed bed reactor (4) also comprises a compression spring (42) and a feed liquid conveying core pipe (43);
the top end of the feed liquid conveying core pipe (43) is connected with the feed liquid inlet I (47).
The compression spring (42) is positioned above the stainless steel sieve plate and is matched with the stainless steel sieve plate (46).
Wherein, the feed liquid conveying core pipe (43) is used for conveying feed liquid.
Optionally, the reactor end cap (41) and the catalyst loading cartridge (44) are sealingly connected by a flange structure;
the inner diameter of the reactor end cover (41) is equal to the inner diameter of the catalyst filling cylinder (44);
the ratio of the inner diameter of the catalyst loading cylinder (44) to the cylinder height of the catalyst loading cylinder (44) is 1:1-1:3.
Optionally, a seal is provided between the reactor end cap (41) and the catalyst loading cartridge (44);
the sealing member material is fluororubber.
Optionally, the outside of the fixed bed reactor (4) is wrapped with insulation cotton (49);
the heat-insulating cotton (49) is made of aluminum silicate;
the thickness of the heat preservation cotton (49) is 30-50 mm.
Optionally, the feed liquid conveying core pipe (43) is positioned at the axle center of the fixed bed reactor (4);
the lower end of the feed liquid conveying core pipe (43) is positioned below the feed liquid distribution plate (45);
the inner diameter of the feed liquid conveying core pipe (43) is 4-6 mm, the outer diameter is 10-12 mm, and the length is 200-300 mm.
Optionally, the wire diameter of the compression spring (42) is 2-4 mm, and the working stroke is 6-10 mm.
Optionally, the feed liquid distribution plate (45) is a multilayer sintering net;
the thickness of the feed liquid distribution plate (45) is 1-2 mm, and the filtering precision is 40-80 meshes.
Optionally, the gas-liquid separator (5) consists of a separator housing (51), a coil pipe II (52) and a cylinder (53);
the top end of the separator shell (51) is provided with a feed liquid inlet II (54) and a gas outlet (55), and the bottom end of the separator shell is provided with a feed liquid outlet II (56);
the upper end of the cylinder (53) is respectively connected with the feed liquid inlet II (54) and the gas outlet (55), and the lower end of the cylinder (53) is connected with the upper end of the coil pipe II (52);
the lower end of the coil pipe II (52) is connected with the feed liquid outlet II (56);
the gas-liquid separator shell (51) is also provided with a cooling water inlet (57) and a cooling water outlet (58);
the feed liquid inlet II (54) is connected with the fixed bed reactor (4) through a pipeline;
the feed liquid outlet II (56) is connected with the feed liquid receiving tank (7) through a pipeline.
Optionally, the heat exchanger (3) is a spiral coil jacket heat exchanger;
the heat exchanger (3) consists of a coil pipe I (31) and a heat exchanger shell (32);
the top end of the heat exchanger shell (32) is provided with a feed liquid outlet III (34), and the bottom end of the heat exchanger shell is provided with a feed liquid inlet III (33);
the coil I (31) is arranged in the heat exchanger shell (32), the lower end of the coil I (31) is connected with the feed liquid inlet III (33), and the upper end of the coil I (31) is connected with the feed liquid outlet III (34);
the heat exchanger shell (32) is also provided with a heat conducting liquid inlet (35) and a heat conducting liquid outlet (36);
the feed liquid inlet III (33) is connected with the feed pump (2) through a pipeline;
and the feed liquid outlet III (34) is connected with the fixed bed reactor (4) through a pipeline.
Optionally, the length of the coil pipe I (31) is 5-10 m, and the drift diameter is 6-10 mm.
Optionally, the materials of the feed liquid storage tank (1), the heat exchanger (3), the fixed bed reactor (4), the gas-liquid separator (5), the sampler (6) and the feed liquid receiving tank (7) are all independently selected from one of 316L stainless steel or 304 stainless steel.
The utility model has the beneficial effects that:
(1) According to the utility model, the heat exchanger is adopted to heat the feed liquid, the reactor adopts a heat preservation mode, heating is not needed, and the reactor is convenient to install and disassemble.
(2) The material liquid circulation mode adopts a mode of upper feeding and upper discharging, so that the material liquid is prevented from being scattered during the replacement of the catalyst, and the radioactive material liquid is prevented from leaking.
(3) The utility model fixes the catalytic bed layer in a spring compression mode, and prevents the catalytic bed layer from loosening caused by long-time operation, so that the catalyst is broken and lost.
Drawings
FIG. 1 is a schematic structural diagram of a reaction apparatus for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid in example 1 of the present utility model;
FIG. 2 is a schematic view of a heat exchanger in embodiment 1 of the present utility model;
FIG. 3 is a cross-sectional view of a fixed bed reactor in example 1 of the present utility model;
FIG. 4 is a schematic diagram showing the structure of a gas-liquid separator in example 1 of the present utility model.
Wherein:
1. the device comprises a feed liquid storage tank, a feed pump, a heat exchanger, a fixed bed reactor, a gas-liquid separator, a sampler and a 7-feed liquid receiving tank, wherein the feed liquid storage tank, the feed pump, the heat exchanger, the fixed bed reactor, the gas-liquid separator, the sampler and the 7-feed liquid receiving tank are sequentially arranged;
31. coil pipes I and 32, a heat exchanger shell 33, a feed liquid inlet III and 34, a feed liquid outlet III and 35, a heat conducting liquid inlet 36 and a heat conducting liquid outlet;
41. reactor end cover, 42, compression spring, 43, feed liquid conveying core pipe, 44, catalyst filling cylinder, 45, feed liquid distribution plate, 46, stainless steel sieve plate, 47, feed liquid inlet I,48, feed liquid outlet I,49, heat preservation cotton;
51. the separator comprises a separator shell, 52, coils II,53, a barrel, 54, a feed liquid inlet II,55, a gas outlet, 56, a feed liquid outlet II,57, a cooling water inlet, 58 and a cooling water outlet.
Detailed Description
The following drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
A reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid is shown in figure 1, and comprises a feed liquid storage tank 1, a feed pump 2, a heat exchanger 3, a fixed bed reactor 4, a gas-liquid separator 5 and a feed liquid receiving tank 7 which are sequentially communicated through pipelines; the gas-liquid separator 5 is provided with a sampler 6 on a pipeline connected with the feed liquid receiving tank 7.
As shown in fig. 2, the heat exchanger 3 is a spiral coil jacket heat exchanger; the heat exchanger 3 consists of a coil pipe I31 and a heat exchanger shell 32; the top end of the heat exchanger shell 32 is provided with a feed liquid outlet III34, and the bottom end is provided with a feed liquid inlet III33; the coil I31 is arranged in the heat exchanger shell 32, the lower end of the coil I31 is connected with the feed liquid inlet III33, and the upper end of the coil I31 is connected with the feed liquid outlet III 34; the heat exchanger housing 32 is also provided with a heat transfer fluid inlet 35 and a heat transfer fluid outlet 36; the feed liquid inlet III33 is connected with a pipeline of the feed pump 2; the feed liquid outlet III34 is connected with the fixed bed reactor 4 through a pipeline; the coil I31 has a length of 5m and an drift diameter of 6mm.
As shown in fig. 3, the fixed bed reactor 4 comprises a reactor end cover 41 and a catalyst filling cylinder 44 which are arranged from top to bottom, the reactor end cover 41 is provided with a feed liquid inlet I47 and a feed liquid outlet I48, the feed liquid inlet I47 is connected with a pipeline of the heat exchanger 3, and the feed liquid outlet I48 is connected with a pipeline of the gas-liquid separator 5; a stainless steel sieve plate 46 is arranged between the reactor end cover 41 and the catalyst filling cylinder 44, and a feed liquid distribution plate 45 is arranged at the bottom of the cavity of the catalyst filling cylinder 44; the fixed bed reactor 4 also comprises a compression spring 42 and a feed liquid conveying core pipe 43; the hold-down spring 42 is located between the reactor end cap 41 and the stainless steel screen plate 46; the top end of the feed liquid conveying core pipe 43 is connected with the feed liquid inlet I47; the reactor end cover 41 and the catalyst filling cylinder 44 are connected in a sealing way through a flange structure, a sealing piece is arranged between the reactor end cover 41 and the catalyst filling cylinder, and the sealing piece is made of fluororubber; the inside diameter of the reactor end cap 41 is equal to the inside diameter of the catalyst loading cylinder 44; the ratio of the inside diameter of the catalyst loading cylinder 44 to the cylinder height of the catalyst loading cylinder 44 is 1:1; the outside of the fixed bed reactor 4 is wrapped with heat preservation cotton 49, the heat preservation cotton 49 is made of aluminum silicate, and the thickness of the heat preservation cotton 49 is 30mm; the feed liquid conveying core pipe 43 is positioned at the axle center of the fixed bed reactor 4; the lower end of the feed liquid conveying core pipe 43 is positioned below the feed liquid distribution plate 45; the inner diameter of the feed liquid conveying core pipe 43 is 6mm, the outer diameter is 12mm, and the length is 200mm; the wire diameter of the compression spring 42 is 4mm, and the working stroke is 6-10 mm. The feed liquid distribution plate 45 is a multilayer sintering net; the thickness of the feed liquid distribution plate 45 is 2mm, and the filtering precision is 80 meshes.
As shown in fig. 4, the gas-liquid separator 5 is composed of a separator housing 51, a coil II 52, and a cylinder 53; the top end of the separator shell 51 is provided with a feed liquid inlet II54 and a gas outlet 55, and the bottom end is provided with a feed liquid outlet II56; the upper end of the cylinder 53 is respectively connected with a feed liquid inlet II54 and a gas outlet 55, and the lower end of the cylinder 53 is connected with the upper end of the coil pipe II 52; the lower end of the coil pipe II 52 is connected with a feed liquid outlet II56; the gas-liquid separator housing 51 is also provided with a cooling water inlet 57 and a cooling water outlet 58; the feed liquid inlet II54 is connected with the fixed bed reactor 4 through a pipeline; the feed liquid outlet II56 is connected with the feed liquid receiving tank 7 through a pipeline.
The material of the feed liquid storage tank 1, the heat exchanger 3, the fixed bed reactor 4, the gas-liquid separator 5, the sampler 6 and the feed liquid receiving tank 7 is 316L stainless steel.
Example 1
With the reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid obtained in example 1, 1500g of ruthenium-carbon catalyst is weighed and placed in the catalyst filling cylinder 44 of the fixed bed reactor 4, a stainless steel sieve plate 46 is covered above the catalyst above a feed liquid distribution plate 45, the catalyst is compacted by a compression spring 42, and then the end cover 41 of the reactor is covered and screwed, so that the connection of all components of the device is ensured to be smooth. The feed liquid storage tank 1 is filled with feed liquid of 0.3mol/L hydroxylamine nitrate, 0.1mol/L hydrazine nitrate, 1.0mol/L nitric acid and 0.06g/L hexavalent uranium, the feed liquid enters the heat exchanger 3 through the feed pump 2 at a flow rate of 50mL/min, the feed liquid is preheated to 60 ℃, the feed liquid enters the reactor through the feed liquid inlet I47 of the fixed bed reactor 4 to react, the reacted solution flows out from the feed liquid outlet I48, enters the gas-liquid separator 5, the gas generated in the product is discharged from the gas outlet 55 of the gas-liquid separator 5, the liquid flows into the feed liquid receiving tank 7, the sample is taken and analyzed through the sampler 6, and the hydrazine nitrate content of the reacted solution is 0.0002mol/L and the hydroxylamine nitrate content is 0.000005mol/L.
Example 2
With the reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid obtained in example 1, 1500g of ruthenium-carbon catalyst is weighed and placed in the catalyst filling cylinder 44 of the fixed bed reactor 4, a stainless steel sieve plate 46 is covered above the catalyst above a feed liquid distribution plate 45, the catalyst is compacted by a compression spring 42, and then the end cover 41 of the reactor is covered and screwed, so that the connection of all components of the device is ensured to be smooth. The feed liquid storage tank 1 is filled with feed liquid of 0.3mol/L hydroxylamine nitrate, 0.1mol/L hydrazine nitrate, 1.0mol/L nitric acid and 0.06g/L hexavalent uranium, the feed liquid enters the heat exchanger 3 through the feed pump 2 at a flow rate of 50mL/min, the feed liquid is preheated to 80 ℃, the feed liquid enters the reactor through the feed liquid inlet I47 of the fixed bed reactor 4 to react, the reacted solution flows out from the feed liquid outlet I48 and enters the gas-liquid separator 5, the gas generated in the product is discharged from the gas outlet 55 of the gas-liquid separator 5, the liquid flows into the feed liquid receiving tank 7, the sample analysis is carried out from the sampler 6, and the hydrazine nitrate content and the hydroxylamine nitrate content of the solution after the reaction are not detected.
Example 3
With the reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid obtained in example 1, 1500g of ruthenium-carbon catalyst is weighed and placed in the catalyst filling cylinder 44 of the fixed bed reactor 4, a stainless steel sieve plate 46 is covered above the catalyst above a feed liquid distribution plate 45, the catalyst is compacted by a compression spring 42, and then the end cover 41 of the reactor is covered and screwed, so that the connection of all components of the device is ensured to be smooth. The feed liquid storage tank 1 is filled with feed liquid of 0.3mol/L hydroxylamine nitrate, 0.1mol/L hydrazine nitrate, 1.0mol/L nitric acid and 0.06g/L hexavalent uranium, the feed liquid enters the heat exchanger 3 through the feed pump 2 at a flow rate of 70mL/min, the feed liquid is preheated to 60 ℃, the feed liquid enters the reactor through the feed liquid inlet I47 of the fixed bed reactor 4 for reaction, the reacted solution flows out from the feed liquid outlet I48, enters the gas-liquid separator 5, the gas generated in the product is discharged from the gas outlet 55 of the gas-liquid separator 5, the liquid flows into the feed liquid receiving tank 7, the sample is taken and analyzed through the sampler 6, and the hydrazine nitrate content of the reacted solution is 0.0004mol/L and the hydroxylamine nitrate content is 0.000009mol/L.
Example 4
With the reaction device for catalytically decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid obtained in example 1, 1500g of ruthenium-carbon catalyst is weighed and placed in the catalyst filling cylinder 44 of the fixed bed reactor 4, a stainless steel sieve plate 46 is covered above the catalyst above a feed liquid distribution plate 45, the catalyst is compacted by a compression spring 42, and then the end cover 41 of the reactor is covered and screwed, so that the connection of all components of the device is ensured to be smooth. The feed liquid storage tank 1 is filled with feed liquid of 0.3mol/L hydroxylamine nitrate, 0.1mol/L hydrazine nitrate, 1.0mol/L nitric acid and 0.06g/L hexavalent uranium, the feed liquid enters the heat exchanger 3 through the feed pump 2 at a flow rate of 50mL/min, the feed liquid is preheated to 90 ℃, the feed liquid enters the reactor through the feed liquid inlet I47 of the fixed bed reactor 4 to react, the reacted solution flows out from the feed liquid outlet I48 and enters the gas-liquid separator 5, the gas generated in the product is discharged from the gas outlet 55 of the gas-liquid separator 5, the liquid flows into the feed liquid receiving tank 7, the sample is taken and analyzed through the sampler 6, and the content of the hydrazine nitrate and the hydroxylamine nitrate in the solution after the reaction is detected.
While the utility model has been described in terms of preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the utility model, and it is intended that the utility model is not limited to the specific embodiments disclosed.
Claims (10)
1. A reaction device for catalyzing and decomposing hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid is characterized in that,
the reaction device comprises a feed liquid storage tank (1), a feed pump (2), a heat exchanger (3), a fixed bed reactor (4), a gas-liquid separator (5) and a feed liquid receiving tank (7) which are sequentially communicated through pipelines;
a sampler (6) is arranged on a pipeline connected with the feed liquid receiving tank (7) through the gas-liquid separator (5);
the fixed bed reactor (4) comprises a reactor end cover (41) and a catalyst filling cylinder (44) which are arranged from top to bottom, the reactor end cover (41) is provided with a feed liquid inlet I (47) and a feed liquid outlet I (48), the feed liquid inlet I (47) is connected with the heat exchanger (3) through a pipeline, and the feed liquid outlet I (48) is connected with the gas-liquid separator (5) through a pipeline;
a stainless steel sieve plate (46) is arranged between the reactor end cover (41) and the catalyst filling cylinder (44), and a feed liquid distribution plate (45) is also arranged in the catalyst filling cylinder (44);
the fixed bed reactor (4) also comprises a compression spring (42) and a feed liquid conveying core pipe (43);
the top end of the feed liquid conveying core pipe (43) is connected with the feed liquid inlet I (47).
2. A reaction device according to claim 1, wherein,
the reactor end cover (41) and the catalyst filling cylinder (44) are connected in a sealing way through a flange structure;
the inner diameter of the reactor end cover (41) is equal to the inner diameter of the catalyst filling cylinder (44);
the ratio of the inner diameter of the catalyst loading cylinder (44) to the cylinder height of the catalyst loading cylinder (44) is 1:1-1:3.
3. A reaction device according to claim 1, wherein,
the outside of the fixed bed reactor (4) is wrapped with heat preservation cotton (49);
the heat-insulating cotton (49) is made of aluminum silicate;
the thickness of the heat preservation cotton (49) is 30-50 mm.
4. A reaction device according to claim 1, wherein,
the feed liquid conveying core pipe (43) is positioned at the axle center of the fixed bed reactor (4);
the lower end of the feed liquid conveying core pipe (43) is positioned below the feed liquid distribution plate (45);
the inner diameter of the feed liquid conveying core pipe (43) is 4-6 mm, the outer diameter is 10-12 mm, and the length is 200-300 mm.
5. A reaction device according to claim 1, wherein,
the wire diameter of the compression spring (42) is 2-4 mm, and the working stroke is 6-10 mm.
6. A reaction device according to claim 1, wherein,
the feed liquid distribution plate (45) is a multilayer sintering net;
the thickness of the feed liquid distribution plate (45) is 1-2 mm, and the filtering precision is 40-80 meshes.
7. A reaction device according to claim 1, wherein,
the gas-liquid separator (5) consists of a separator shell (51), a coil II (52) and a cylinder (53);
the top end of the separator shell (51) is provided with a feed liquid inlet II (54) and a gas outlet (55), and the bottom end of the separator shell is provided with a feed liquid outlet II (56);
the upper end of the cylinder (53) is respectively connected with the feed liquid inlet II (54) and the gas outlet (55), and the lower end of the cylinder (53) is connected with the upper end of the coil pipe II (52);
the lower end of the coil pipe II (52) is connected with the feed liquid outlet II (56);
the gas-liquid separator shell (51) is also provided with a cooling water inlet (57) and a cooling water outlet (58);
the feed liquid inlet II (54) is connected with the fixed bed reactor (4) through a pipeline;
the feed liquid outlet II (56) is connected with the feed liquid receiving tank (7) through a pipeline.
8. A reaction device according to claim 1, wherein,
the heat exchanger (3) is a spiral coil jacket heat exchanger;
the heat exchanger (3) consists of a coil pipe I (31) and a heat exchanger shell (32);
the top end of the heat exchanger shell (32) is provided with a feed liquid outlet III (34), and the bottom end of the heat exchanger shell is provided with a feed liquid inlet III (33);
the coil I (31) is arranged in the heat exchanger shell (32), the lower end of the coil I (31) is connected with the feed liquid inlet III (33), and the upper end of the coil I (31) is connected with the feed liquid outlet III (34);
the heat exchanger shell (32) is also provided with a heat conducting liquid inlet (35) and a heat conducting liquid outlet (36);
the feed liquid inlet III (33) is connected with the feed pump (2) through a pipeline;
and the feed liquid outlet III (34) is connected with the fixed bed reactor (4) through a pipeline.
9. A reaction apparatus according to claim 8, wherein,
the length of the coil pipe I (31) is 5-10 m, and the drift diameter is 6-10 mm.
10. A reaction device according to claim 1, wherein,
the material of the material liquid storage tank (1), the heat exchanger (3), the fixed bed reactor (4), the gas-liquid separator (5), the sampler (6) and the material liquid receiving tank (7) are all independently selected from one of 316L stainless steel or 304 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222803944.5U CN219591136U (en) | 2022-10-24 | 2022-10-24 | Reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222803944.5U CN219591136U (en) | 2022-10-24 | 2022-10-24 | Reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219591136U true CN219591136U (en) | 2023-08-25 |
Family
ID=87694173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222803944.5U Active CN219591136U (en) | 2022-10-24 | 2022-10-24 | Reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219591136U (en) |
-
2022
- 2022-10-24 CN CN202222803944.5U patent/CN219591136U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Inoue et al. | Development of pyroprocessing and its future direction | |
| AU2015203131B2 (en) | Methods and apparatus for selective gaseous extraction of molybdenum-99 and other fission product radioisotopes | |
| CN104112485B (en) | A kind of device of continuous destruction Spent Radioactive organic solvent | |
| WO2003058642A1 (en) | A nuclear plant spent fuel low temperature reactor | |
| CN219591136U (en) | Reaction device for catalytic decomposition of hydrazine nitrate and hydroxylamine nitrate in spent fuel waste liquid | |
| CN112967829A (en) | Irradiation target for producing molybdenum-99 isotope in heavy water reactor | |
| CN108802267B (en) | Device and method for evaluating activity of hydrogen isotope gas phase exchange hydrophobic catalyst | |
| CN113526558B (en) | Method for preparing uranium nitrate by reducing uranyl nitrate through catalytic hydrogenation | |
| CN110828020A (en) | Preparation system and preparation method of lutetium chloride-177 solution containing carrier | |
| CN211507146U (en) | System for adopt adsorbing material to carry out nuclear power station radioactive waste liquid treatment | |
| RU2125743C1 (en) | Homogeneous reactor | |
| CN111187902B (en) | Aluminum matrix mercury catalysis technology dissolving system | |
| CN112992396B (en) | Tail gas utilization device in calcination preparation process of nuclear pure uranium oxide | |
| Korchagin et al. | Improvement of technology for treatment of spent radioactive ion-exchange resins at nuclear power stations | |
| Chuvilin et al. | Production of 89Sr in solution reactor | |
| CN114570289B (en) | Fixed bed catalytic reactor and application thereof in removal of hydrazine nitrate and hydroxylamine nitrate | |
| CN216646382U (en) | Visual fixed bed reactor for evaluating hydrazine nitrate in catalytic decomposition nitric acid | |
| CN112678939B (en) | Method for removing hydrazine nitrate and hydroxylamine nitrate in nitric acid | |
| CN203950562U (en) | A kind of vaporising device of processing radioactive liquid waste | |
| CN108962414B (en) | Plutonium solution storage tank | |
| RU90609U1 (en) | REACTOR INSTALLATION | |
| KR100969939B1 (en) | An coating apparatus for inner surface of nuclear fuel cladding | |
| Lambert et al. | Corrosion product solubility in the PWR primary coolant | |
| CN218653873U (en) | For recovering 14 C gas chromatographic separation device | |
| CN117373718A (en) | Device and method for treating and recycling C-14 in radioactive waste resin for engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |