CN113782243A - Reaction kettle device for sodium water reaction and sodium water reaction system - Google Patents
Reaction kettle device for sodium water reaction and sodium water reaction system Download PDFInfo
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- CN113782243A CN113782243A CN202110982288.7A CN202110982288A CN113782243A CN 113782243 A CN113782243 A CN 113782243A CN 202110982288 A CN202110982288 A CN 202110982288A CN 113782243 A CN113782243 A CN 113782243A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 284
- 239000011734 sodium Substances 0.000 title claims abstract description 238
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 238
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 236
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 100
- 239000006260 foam Substances 0.000 claims abstract description 38
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 35
- 238000004321 preservation Methods 0.000 claims description 15
- 239000007769 metal material Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 89
- 239000007789 gas Substances 0.000 description 40
- 239000000243 solution Substances 0.000 description 40
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 15
- 238000005507 spraying Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 12
- 239000003513 alkali Substances 0.000 description 9
- 239000003960 organic solvent Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- NASFKTWZWDYFER-UHFFFAOYSA-N sodium;hydrate Chemical compound O.[Na] NASFKTWZWDYFER-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000021023 sodium intake Nutrition 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
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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
- G21F9/06—Processing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0031—Degasification of liquids by filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Dispersion Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The embodiment of the application discloses a reation kettle device and sodium water reaction system for sodium water reaction relates to the sodium water reaction, has solved and has contained more foam in the sodium hydroxide solution that the sodium water reaction generated, causes the problem of exhaust pipe blockage. A reation kettle device for sodium water reaction, which comprises a housin, advance the sodium subassembly, feed liquor subassembly and blast pipe, be formed with the reaction chamber in the casing, advance the sodium subassembly and stretch into the reaction intracavity, carry liquid sodium to the reaction area of reaction intracavity, the feed liquor subassembly stretches into the reaction intracavity, carry reaction liquid to the reaction area of reaction intracavity, the blast pipe sets up on the casing, with the reaction chamber intercommunication, a gas for the reaction of discharge sodium water produces, be provided with the filter screen between reaction area and the blast pipe, the filter screen is used for preventing the foam to pass through. The reaction kettle device for sodium water reaction is used for eliminating foam generated in the sodium water reaction.
Description
Technical Field
The embodiment of the application relates to the field of sodium water reaction, in particular to a reaction kettle device for sodium water reaction and a sodium water reaction system.
Background
The sodium-cooled fast reactor and the related sodium-involved test loop thereof can generate a large amount of waste sodium in the operation and retirement processes, and the waste sodium contains a large amount of decay products and fission products, has strong radioactivity and belongs to radioactive waste. At present, a continuous sodium-water reaction or sodium-alkali solution reaction technical route is adopted for treating radioactive sodium waste, metal simple substance sodium with strong reaction activity is converted into a stable sodium hydroxide aqueous solution, and the sodium waste is further converted into a substance form which is easy to be finally treated by means of neutralization, solidification and the like. The sodium-water reaction or sodium-alkali solution reaction is a key step of the technical route, and the sodium-water reaction generates a large amount of hydrogen and the reaction is violent, so the step is also the step with the largest processing difficulty and risk.
The existing sodium water reaction process comprises: french NOAH process, Argonne process in the United states and continuous sodium treatment process in Japan, the French NOAH process is that flowing sodium is sprayed to collide with alkali liquor in a reaction vessel for reaction, and then generated gas is washed and diluted and discharged through an external gas defoaming treatment and cleaning device; the Argonne flow in the united states and the continuous sodium treatment flow in japan in order to increase the degree of mixing of sodium with the solution, the reaction was carried out by spraying sodium directly in the alkaline solution.
However, the sodium hydroxide and the gaseous product are produced as the products of the reaction between sodium and the alkali solution, so the sodium oxide solution is easy to generate more foams, the foams contact with the exhaust pipeline to cause the blockage of the exhaust pipeline, the blockage of the exhaust pipeline can affect the normal discharge of the gaseous product, and the safe operation of the reaction system is not facilitated.
Disclosure of Invention
The embodiment of the application provides a reation kettle device and sodium water reaction system for sodium water reaction eliminates the foam in the gas that gets into the blast pipe, avoids the foam to get into the blast pipe and causes the blast pipe to block up.
In a first aspect, an embodiment of the present application provides a reaction kettle device for sodium water reaction, including: casing, advance sodium subassembly, feed liquor subassembly and blast pipe, wherein, be formed with the reaction chamber in the casing for carry out the sodium water reaction and hold the sodium hydroxide solution that the sodium water reaction produced, advance the sodium subassembly and stretch into the reaction intracavity, be used for to the reaction intracavity the reaction regional reaction liquid that carries, the blast pipe setting on the casing, with the reaction chamber intercommunication for the gas that the sodium water reaction of discharging produced is provided with the filter screen between reaction region and the blast pipe, and the filter screen is used for preventing gas smuggleing secretly the foam and passes through.
The utility model provides a reaction kettle device for sodium water reaction prevents through the filter screen that gas secretly to take the foam to get into the blast pipe, realizes preventing the effect of blast pipe jam. Specifically, be formed with the reaction chamber in the casing, advance the sodium subassembly and stretch into the reaction intracavity, carry liquid sodium to the reaction area, the feed liquor subassembly stretches into the reaction intracavity, carry the reaction area with the reaction liquid, liquid sodium reacts with the reaction liquid in the reaction area and generates sodium hydroxide and gas, therefore, can produce more foam in the sodium hydroxide solution, also can smuggle a large amount of foams secretly during gas outgoing, consequently, set up the filter screen between reaction area and blast pipe, eliminate the foam, only allow gas to pass through the blast pipe. Compare in prior art directly with the gaseous result discharge that sodium water reaction produced, the outside gaseous defoaming of rethread is handled and is handled gas with belt cleaning device, has avoided the foam to get into the blast pipe, can effectively prevent that the blast pipe from blockking up, avoids gaseous result unable normal discharge to lead to the emergence of unsafe accident, has improved the stability and the security of device operation.
The reaction area is specifically an area where liquid sodium and the reaction liquid coincide, for example, if the sodium inlet assembly and the liquid inlet assembly are arranged oppositely and liquid sodium and the reaction liquid are discharged in a spraying manner, the reaction area is an area where the liquid sodium is sprayed coincides with the area where the reaction liquid is sprayed out, and an area where the liquid sodium and the reaction liquid that do not coincide with each other in the spraying area coincide with each other in a falling process.
In one possible implementation of the present application, the exhaust pipe is disposed at the top of the housing, and the filter screen is disposed at the lower side of the exhaust pipe to remove the foam in the gas product before entering the exhaust pipe.
In a possible implementation of this application, advance the sodium subassembly including advancing the sodium pipe and being located the sodium shower nozzle that advances the sodium pipe tip, the position that the reaction intracavity corresponds into the sodium pipe is equipped with the heat preservation solute chamber that the heat preservation shell encloses, keeps warm through the liquid sodium that heat preservation solute chamber in to advancing the sodium pipe, prevents that liquid sodium temperature from reducing to become solid-state, can't normally get into and react in the reaction chamber.
In a possible implementation of this application, advance the sodium subassembly and stretch into the reaction intracavity by the top of casing, the blast pipe is close to the edge setting of reaction chamber, forms airflow channel between the outer wall of heat preservation shell and the inner wall of casing, and the filter screen setting is in airflow channel, and through communicating airflow channel and blast pipe that will advance sodium subassembly and casing inner wall, then set up the filter screen and can eliminate the foam in the gas production before getting into the blast pipe in airflow channel.
In one possible implementation of the present application, the filter screen is fixed in the air flow passage by a support frame fixed on the outer wall of the heat-insulating casing.
In one possible implementation of the present application, the reaction chamber is a cylindrical pot structure, the reaction area is located on the central axis of the reaction chamber, and the air flow channel and the filter screen are both in an annular structure.
In a possible implementation of this application, be equipped with the overflow pipe with the reaction chamber intercommunication on the casing, the filter screen is higher than the overflow pipe setting, the overflow pipe is used for keeping the liquid level of alkali lye in airtight reaction space, prevent that the liquid level is too high, be higher than the overflow pipe setting with the filter screen, make the filter screen need not eliminate the foam in the solution, reduce the defoaming pressure of filter screen, ensure simultaneously that the liquid level in the reaction chamber remains throughout at the certain limit, ensure going on in succession of sodium water reaction.
In one possible implementation of the present application, the filter screen is made of a metal material, and when the gas passes through the metal material to make the filter screen, water vapor, foam, and the like are condensed on the screen, thereby reducing moisture and foam in the gas discharged from the exhaust pipe and preventing the exhaust pipe from being blocked.
In a possible implementation of this application, the play liquid end that advances the sodium subassembly sets up with the play liquid end of feed liquor subassembly is relative, and goes out the liquid direction and set up along vertical direction, like this, liquid sodium and reaction liquid can fully contact and fully react.
In a second aspect, an embodiment of the present application provides a sodium water reaction system, including any one of a sodium inlet device, a liquid inlet device and the reactor device for sodium water reaction of the first aspect, wherein the sodium inlet device is communicated with a sodium inlet component of the reactor device for sodium water reaction, and the liquid inlet device is communicated with a liquid inlet component of the reactor device for sodium water reaction.
The sodium water reaction system that this application embodiment provided, owing to including the reation kettle device for sodium water reaction of any one in the first aspect, consequently have same technological effect, promptly, avoided the foam to get into the blast pipe, can effectively prevent the blast pipe way jam, avoid gaseous product can't normally discharge to lead to the emergence of unsafe accident, improved the stability and the security of device operation.
Drawings
FIG. 1 is a schematic structural diagram of a sodium water reaction system provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a reaction kettle device for sodium water reaction according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a shell of a reaction kettle device for sodium water reaction according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a cross section A-A of a reaction kettle device for sodium water reaction provided in an embodiment of the present application.
Reference numerals:
1-a sodium inlet device; 2-a liquid inlet device; 3-a reaction kettle device for sodium water reaction; 31-a sodium intake component; 311-sodium inlet pipe; 312-sodium shower head; 32-a liquid inlet component; 321-a liquid inlet pipe; 322-a liquid inlet spray head; 33-a housing; 331-cylindrical barrel; 332-an elliptical head; 333-cover body; 334-overflow pipe; 335-drain pipe; 336-temperature sensor; 337-pressure sensor connection; 338-a heating element; 339-organic solvent tube; 34-an exhaust pipe; 35-a filter screen; 351-a support frame; 36-a heat preservation shell; 361-heating shell; 362-insulating shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The embodiment of the application provides a sodium water reaction system, as shown in figure 1, including advancing sodium device 1, inlet means 2 and being used for the reation kettle device 3 of sodium water reaction, advance sodium device 1 and be used for the reation kettle device 3's of sodium water reaction sodium subassembly 31 intercommunication, inlet means 2 communicates with the inlet means 32 that is used for the reation kettle device 3 of sodium water reaction. The sodium inlet device 1 is used for transmitting the metal simple substance sodium with strong reactivity obtained by other process flows to the reaction kettle device 3 for sodium water reaction, then the metal simple substance sodium is transmitted into the reaction kettle device 3 for sodium water reaction through the sodium inlet component 31 of the reaction kettle device 3 for sodium water reaction, the liquid inlet device 2 is used for transmitting the alkali liquor, new alkali liquor or water obtained by other process flows through reaction to the reaction kettle device 3 for sodium water reaction, then the metal simple substance sodium with strong reactivity in the reaction kettle device 3 for sodium water reaction and the alkali liquor or water are transmitted into the reaction kettle device 3 for sodium water reaction through the liquid inlet component 32 of the reaction kettle device 3 for sodium water reaction to generate sodium hydroxide water solution and gas products, and then the metal simple substance sodium with strong reactivity can be converted into stable sodium hydroxide water solution.
In some embodiments, the sodium water reaction system of the application can be used for treating a large amount of waste sodium generated in the sodium-cooled fast reactor and a related sodium test loop thereof during operation and decommissioning.
The process of converting the metallic simple substance sodium with strong reactivity into the stable sodium hydroxide aqueous solution in the sodium water reaction system is carried out in the reaction kettle device 3 for sodium water reaction, so the device is the core device of the sodium water reaction system. The reaction kettle device 3 for sodium water reaction has various different structures, the reaction kettle device 3 for sodium water reaction of the related art comprises a sodium inlet component 31 for conveying flowing sodium into the reaction kettle device 3 for sodium water reaction, a liquid inlet component 32 for conveying reaction liquid into the reaction kettle device 3 for sodium water reaction, a reaction cavity formed by a shell 33 for reaction and an exhaust pipe 34 for exhausting gas products, wherein the liquid outlet end of the sodium inlet component 31 and the liquid outlet end of the liquid inlet component 32 are oppositely arranged, corresponding liquid is ejected for reaction, and the gas products generated by the reaction are exhausted from the exhaust pipe 34; or, the reaction kettle device 3 for sodium water reaction comprises a sodium inlet component 31 for conveying flowing sodium into the reaction kettle device 3 for sodium water reaction, a liquid inlet component 32 for conveying reaction liquid into the reaction kettle device 3 for sodium water reaction, a reaction cavity formed by a shell 33 for reaction and an exhaust pipe 34 for exhausting gas products, wherein the sodium inlet component 31 extends into the reaction liquid input by the liquid inlet component 32, the reaction liquid is sprayed in the reaction liquid for reaction, and the gas products generated by the reaction are exhausted by the exhaust pipe 34.
The two schemes have the disadvantages that the products generated by the reaction of sodium and water or alkali liquor are sodium hydroxide solution and gas products, the gas is dispersed in the liquid to generate foam, when the gas is discharged through the exhaust pipe 34, the gas can carry more foam, the foam contacts the exhaust pipe 34 to block the exhaust pipe 34, the normal discharge of the gas is influenced, and the stability and the safety of the operation of the device are influenced.
The reaction kettle device for sodium water reaction of the embodiment of the application carries out new design to the device, and the filter screen 35 is arranged between the area for reacting liquid sodium and reaction liquid and the exhaust pipe 34, so that foam is prevented from entering the exhaust pipe 34, gas can be normally discharged, and the stability and the safety of the operation of the device are improved.
The embodiment of the application provides a reation kettle device for sodium water reaction, as shown in fig. 2, including casing 33, advance sodium subassembly 31, feed liquor subassembly 32 and blast pipe 34, wherein, be formed with reaction chamber in the casing 33, be used for carrying out the sodium water reaction and hold the sodium hydroxide solution that the sodium water reaction produced, it stretches into reaction intracavity to advance sodium subassembly 31, be used for to the regional liquid sodium of carrying of reaction in the reaction chamber, feed liquor subassembly 32 stretches into reaction intracavity, be used for to reaction intracavity reaction regional transport reaction liquid, blast pipe 34 sets up on casing 33, communicate with reaction chamber, a gas for the production of sodium water reaction of discharging, be provided with filter screen 35 between reaction region and the blast pipe 34, filter screen 35 is used for preventing gas entrainment foam to pass through, and allows gas to pass through.
The utility model provides a reaction kettle device for sodium water reaction prevents through filter screen 35 that gas secretly to take the foam to get into blast pipe 34, realizes preventing the effect that blast pipe 34 blockked up. Specifically, be formed with the reaction chamber in the casing 33, advance sodium subassembly 31 and stretch into the reaction intracavity, carry liquid sodium to the reaction area, feed liquor subassembly 32 stretches into the reaction intracavity, carry the reaction liquid to the reaction area, liquid sodium and reaction liquid react in the reaction area and generate sodium hydroxide and gas, because can produce more foam in the sodium hydroxide solution, also can smuggle a large amount of foams during gas outgoing, consequently, set up filter screen 35 between reaction area and blast pipe 34, eliminate the foam, only allow gas to pass through blast pipe 34. Compare in prior art directly with the gaseous result discharge that sodium water reaction produced, the outside gaseous defoaming of rethread is handled and is handled gas with belt cleaning device, has avoided the foam to get into blast pipe 34, can effectively prevent that the exhaust pipe from blockking up, avoids gaseous result can't normally discharge to lead to the emergence of unsafe accident, has improved the stability and the security of device operation.
The reaction area is specifically an area where liquid sodium and the reaction liquid overlap, for example, if the sodium inlet module 31 and the liquid inlet module 32 are disposed opposite to each other, and liquid sodium and the reaction liquid both exit in a spraying manner, the reaction area is an area where liquid sodium is sprayed coincides with an area where the reaction liquid is sprayed, and an area where liquid sodium and the reaction liquid that do not overlap in a spraying area overlap in a falling process, specifically, the reaction area is related to a spraying range of the liquid outlet end of the sodium inlet module 31 and the liquid inlet module 32, if the spraying range of the liquid outlet end of the sodium inlet module 31 and the liquid inlet module 32 completely overlaps or the spraying range of the liquid inlet module 32 completely covers the spraying range of the sodium inlet module 31, the overlapping area is the reaction area, and if the spraying range of the sodium inlet module 31 completely covers the spraying range of the liquid inlet module 32, the reaction area includes the overlapping area, and the liquid sodium falls into the reaction cavity and then contacts with the sodium hydroxide solution in the reaction cavity, if the spraying range of the sodium inlet component 31 is partially overlapped with the spraying range of the liquid inlet component 32, the reaction area comprises an overlapping area, an area overlapped in the falling process of the liquid sodium and the reaction liquid and an area contacted with the sodium hydroxide solution in the reaction cavity after the liquid sodium falls into the reaction cavity.
The sodium water reaction in this application embodiment can be continuous going on, also can not be continuous going on, when the sodium water reaction goes on in succession, can produce sodium hydroxide solution in succession, and the liquid level in the reation kettle device can rise, when the liquid level in the reation kettle device exceeded certain limit, can influence the continuous going on of sodium water reaction.
The exhaust pipe 34 can be disposed on the side wall or the top of the housing 33, if the exhaust pipe 34 is disposed on the side wall, when the disposition position is lower, on the one hand, the solution in the reaction chamber may flood the exhaust pipe 34, and even flow out along the exhaust pipe 34, on the other hand, the gas product is hydrogen with density smaller than air, when the reaction area is higher than the exhaust pipe 34, the exhaust of the gas product is not facilitated, in comparison, the exhaust pipe 34 is disposed on the top of the housing 33, the solution in the reaction chamber is not affected, and the exhaust of the gas product is facilitated. When the exhaust pipe 34 is disposed on the top of the housing 33 and is communicated with the reaction chamber, the filter 35 is disposed on the lower side of the exhaust pipe 34, which may be the inlet end of the exhaust pipe 34 or any position between the inlet end of the exhaust pipe 34 and the reaction region, to remove the foam in the gas product before entering the exhaust pipe 34.
Advance sodium subassembly 31 and be used for carrying liquid sodium to the reaction intracavity, can directly carry through the pipeline, in order to increase liquid sodium and carry out the area of contact who reacts with the reaction liquid after getting into the reaction chamber, refer to fig. 2, advance sodium subassembly 31 in this application embodiment including advancing sodium pipe 311 and being located the sodium shower nozzle 312 of advancing the sodium pipe tip, through advancing sodium pipe 31 transmission liquid sodium, spray out the increase and carry out the area of contact who reacts with the reaction liquid with liquid sodium through sodium shower nozzle 312.
Because sodium can melt when 97.2 ℃ under the ordinary pressure, and liquid sodium is in the transmission course, because ambient temperature is less than the melting point of sodium, so when liquid sodium temperature is less than this temperature, liquid sodium takes place to solidify, can't carry to the reaction intracavity smoothly, consequently, refer to figure 2, this application embodiment is equipped with the heat preservation solute cavity that heat preservation shell 36 encloses at the position that the reaction intracavity corresponds into sodium pipe 311, keep warm through the heat preservation solute cavity to the liquid sodium that advances in sodium pipe 311, prevent that liquid sodium temperature from reducing to become solid-state, can't normally get into the reaction chamber and react.
Referring to fig. 2, the heat-insulating casing 36 includes a heating casing 361 disposed around the sodium inlet pipe 311 in the reaction chamber, and a heat-insulating casing 362 disposed around the heating casing 361, wherein the heating casing 361 encloses a heating chamber for accommodating an organic solvent with good heat-insulating performance, the organic solvent used in the present application is oil, the heat-insulating casing 362 encloses a heat-insulating chamber, and the heat-insulating chamber is filled with heat-insulating material, which is made of glass fiber, asbestos, or rock wool. Because the oil temperature can reduce to some extent because of inside and outside difference in temperature, consequently need heat oil, this application embodiment adopts and stretches into heating chamber to heat oil by casing 33 top with heating element 338, heating element 338 can be the thermocouple etc. further, organic solvent can be with time to some losses, in order to compensate the loss of organic solvent, prevent that the organic solvent dosage is too little, can not be fine keep warm to the liquid sodium of advancing in sodium pipe 311, this application embodiment sets up organic solvent pipe 339 at the heating chamber top, organic solvent pipe 339 stretches into in the heating chamber by casing 33 top, be used for in time replenishing the loss of organic solvent dosage.
The sodium inlet component 31 may extend into the reaction chamber from the top, the side wall, or the bottom of the housing 33, but when the side wall or the bottom extends into the reaction chamber, when the liquid level of the solution in the reaction chamber is too high, the sodium nozzle 312 of the sodium inlet component may be submerged, and the foam generated after the liquid sodium reacts with the reaction liquid may block the sodium nozzle 312, so in this embodiment, the sodium inlet component 31 extends into the reaction chamber from the top of the housing 33, and the exhaust pipe 34 is disposed at a position different from the positions of the sodium inlet component 31 and the thermal insulation shell 36 at the top of the housing 33. Thus, the sodium shower head can be kept away from the liquid surface as far as possible to prevent the sodium shower head from being submerged by the liquid surface, and at the same time, an air flow channel is formed between the outer wall of the heat-insulating shell 36 and the inner wall of the housing 33 and is located between the reaction region and the exhaust pipe 34, so that the filter screen 35 is arranged in the air flow channel to prevent the air from entraining the foam into the exhaust pipe 34.
Referring to fig. 3, in the embodiment of the present application, the housing 33 includes a cylindrical barrel 331, a lower end of the cylindrical barrel 331 is connected to an elliptical sealing head 332, an upper end of the cylindrical barrel 331 is connected to the cover 333 through a flange, a reaction chamber enclosed by the housing 33 is a cylindrical tank-shaped structure, the cover 333 is provided with an exhaust pipe orifice, a sodium inlet pipe orifice, an oil inlet pipe orifice, a heating unit orifice and a pressure sensor pipe orifice, and the pressure sensor pipe orifice 337 extends into the reaction chamber from the pressure sensor pipe orifice to detect the air pressure in the reaction chamber, so as to prevent unsafe accidents caused by excessively high air pressure. The heat preservation shell 36 and the sodium inlet assembly 31 are connected with the cover body 333, and as shown in fig. 4, in order to facilitate cleaning and replacement of the filter screen 35, in the embodiment of the present application, the filter screen 35 is fixed in the airflow channel through a support frame 351 fixed on the outer wall of the heat preservation shell 36.
The reaction chamber of this application embodiment is cylindrical pot shape structure, and it sets up on the central axis of reaction chamber to advance sodium subassembly 31, so, refer to fig. 4, and the cross-section of the airflow channel between the cylindrical barrel 331 inner wall of heat preservation shell 36 and casing 33 is the annular structure, consequently, in order to prevent that gas from smuggleing the foam and getting into the blast pipe, set up filter screen 35 as the annular structure the same with airflow channel in this application embodiment, filter screen 35 can set up one deck or more than the one deck.
Because liquid sodium and reaction solution reaction can generate sodium hydroxide solution, continuous sodium water reaction can make the sodium hydroxide solution liquid level rise in the reaction chamber, even submerge sodium shower nozzle 312 and blast pipe 34, therefore, in order to control the liquid level in the reaction chamber, ensure the continuous going on of sodium water reaction, be equipped with the overflow pipe 334 with the reaction chamber intercommunication on the cylindrical barrel 331 of casing 33 in the embodiment of the application, when the sodium hydroxide solution liquid level in the reaction chamber rises to overflow pipe 334, sodium hydroxide solution can be discharged from overflow pipe 334, ensure that the liquid level in the reaction chamber remains throughout in certain extent, ensure the continuous going on of sodium water reaction.
In order to reduce the defoaming pressure of filter screen 35 for filter screen 35 only need eliminate the foam that gets into blast pipe 34, this application embodiment sets up overflow pipe 334 in the position that is less than filter screen 35, and when the sodium hydroxide solution was discharged from overflow pipe 334, can not pass through filter screen 35, and consequently, filter screen 35 need not eliminate the foam of smuggleing secretly in the sodium hydroxide solution, has reduced filter screen 35's defoaming pressure.
The filter screen 35 can be made of a plastic material or a metal material, and the filter screen 35 in the embodiment of the present application is made of a metal material, so that when gas passes through the filter screen 35 made of a metal material, water vapor and foam are condensed on the filter screen 35, thereby reducing moisture and foam in the gas discharged from the exhaust pipe and preventing the exhaust pipe from being blocked.
In order to ensure that the liquid sodium and the reaction liquid fully react and prevent the sodium hydroxide solution liquid level generated by the sodium water reaction from flooding the sodium spray head 312, the overflow pipe is arranged below the sodium spray head 312 in the embodiment of the application.
Because liquid sodium and reaction solution reaction can generate sodium hydroxide solution, the sodium hydroxide solution liquid level that can make the reaction intracavity of continuous sodium water reaction risees, and overflow pipe 334 can control the solution in the reaction intracavity at certain liquid level, but after the reaction, the solution in the reaction intracavity can't be discharged, consequently, this application embodiment is provided with the fluid-discharge tube 335 with the reaction chamber intercommunication on the oval head 332 of casing 33, discharges the solution in the reaction chamber through fluid-discharge tube 335. Meanwhile, the product of the sodium water reaction is a sodium hydroxide solution, and the sodium hydroxide solution can be used as a reaction solution of the sodium water reaction, so that the liquid discharge pipe 335 can be communicated with the liquid inlet assembly 32, and the sodium hydroxide solution can be recycled.
Because sodium water reaction can produce heat and hydrogen, and continuous sodium water reaction can make temperature and atmospheric pressure in the reaction chamber rise, therefore, need to monitor temperature and atmospheric pressure in the reaction chamber, in order to in time regulate and control in order to reduce temperature and atmospheric pressure when atmospheric pressure and temperature exceed the threshold value, consequently, this application embodiment is provided with the temperature sensor 336 who stretches into the reaction chamber on the cylindrical barrel 331 of casing 33 and is provided with the pressure sensor takeover 337 who stretches into the reaction chamber on the lid 333 of casing 33, through temperature sensor 336 and pressure sensor takeover 337 real-time supervision reaction chamber in temperature and pressure, the convenience is according to the parameter of real-time pressure and temperature regulation reaction, guarantee the stable safe operation of sodium water reaction.
As shown in FIG. 2, a reactor device for sodium water reaction in the example of the present application is supported by legs.
It should be noted that the sodium water reaction system provided in the embodiment of the present application includes a sodium inlet device 1, a liquid inlet device 2 and a reaction kettle device for sodium water reaction in any one of the above embodiments, where the sodium inlet device 1 is communicated with a sodium inlet component 31 of the reaction kettle device 3 for sodium water reaction, the liquid inlet device 2 is communicated with a liquid inlet component 32 of the reaction kettle device 3 for sodium water reaction, when the temperature in the reaction cavity is too high, the liquid inlet device 2 cools the reaction liquid conveyed to the liquid inlet component 32, and when the concentration of the sodium hydroxide solution in the reaction cavity is too high, the liquid inlet device 2 dilutes the reaction liquid conveyed to the liquid inlet component 32 or introduces water as the reaction liquid.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (10)
1. A reaction kettle device for sodium water reaction is characterized by comprising:
a housing having a reaction chamber formed therein;
the sodium inlet assembly extends into the reaction cavity and is used for conveying liquid sodium to a reaction area in the reaction cavity;
the liquid inlet assembly extends into the reaction cavity and is used for conveying reaction liquid to the reaction area in the reaction cavity;
the exhaust pipe is arranged on the shell, is communicated with the reaction cavity and is used for exhausting gas generated by sodium water reaction;
a filter screen is arranged between the reaction area and the exhaust pipe and is used for preventing gas from carrying foam to pass through.
2. The reaction kettle device for sodium water reaction of claim 1, wherein the exhaust pipe is arranged on the top of the shell, and the filter screen is arranged on the lower side of the exhaust pipe.
3. The reaction kettle device for sodium water reaction of claim 2, wherein the sodium inlet assembly comprises a sodium inlet pipe and a sodium spray nozzle positioned at the end part of the sodium inlet pipe, and a heat preservation solute cavity surrounded by a heat preservation shell is arranged in the reaction cavity corresponding to the position of the sodium inlet pipe.
4. The reaction kettle device for sodium water reaction of claim 3, wherein the sodium inlet component extends into the reaction cavity from the top of the shell, the exhaust pipe is arranged near the edge of the reaction cavity, an air flow channel is formed between the outer wall of the heat preservation shell and the inner wall of the shell, and the filter screen is arranged in the air flow channel.
5. The reaction kettle device for sodium water reaction of claim 4, wherein the filter screen is fixed in the airflow channel through a support frame fixed on the outer wall of the heat preservation shell.
6. The reaction kettle device for sodium water reaction of claim 4, wherein the reaction chamber is a cylindrical pot-shaped structure, the reaction area is located on a central axis of the reaction chamber, and the air flow channel and the filter screen are both annular structures.
7. The reaction kettle device for sodium water reaction of claim 6, wherein an overflow pipe communicated with the reaction cavity is arranged on the shell, and the filter screen is arranged higher than the overflow pipe.
8. The reaction kettle device for sodium water reaction of claim 1, wherein the filter screen is made of metal material.
9. The reaction kettle device for sodium water reaction as claimed in any one of claims 1 to 8, wherein the liquid outlet end of the sodium inlet component is opposite to the liquid outlet end of the liquid inlet component, and the liquid outlet direction is arranged along a vertical direction.
10. A sodium water reaction system, comprising:
the reactor apparatus for sodium water reaction of any one of claims 1 to 9;
a sodium inlet device; the sodium inlet component is communicated with the reaction kettle device for sodium water reaction;
and the liquid inlet device is communicated with the liquid inlet component of the reaction kettle device for sodium water reaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110982288.7A CN113782243A (en) | 2021-08-25 | 2021-08-25 | Reaction kettle device for sodium water reaction and sodium water reaction system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110982288.7A CN113782243A (en) | 2021-08-25 | 2021-08-25 | Reaction kettle device for sodium water reaction and sodium water reaction system |
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| CN113782243A true CN113782243A (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114602224A (en) * | 2022-01-24 | 2022-06-10 | 合肥通用机械研究院有限公司 | Intrinsic safety type filtering and washing dual-purpose machine for energetic materials |
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| CN201242883Y (en) * | 2008-08-06 | 2009-05-20 | 中国原子能科学研究院 | Device for atomizing sodium |
| CN107617401A (en) * | 2017-10-27 | 2018-01-23 | 隗阳 | A kind of chemical reaction kettle with exhaust structure |
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Application publication date: 20211210 |