CN208250432U - A kind of reaction unit for molten salt system uranium fluorination reaction - Google Patents

A kind of reaction unit for molten salt system uranium fluorination reaction Download PDF

Info

Publication number
CN208250432U
CN208250432U CN201820061345.1U CN201820061345U CN208250432U CN 208250432 U CN208250432 U CN 208250432U CN 201820061345 U CN201820061345 U CN 201820061345U CN 208250432 U CN208250432 U CN 208250432U
Authority
CN
China
Prior art keywords
fluorination
reaction
reactor
molten salt
reaction unit
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
Application number
CN201820061345.1U
Other languages
Chinese (zh)
Inventor
孙理鑫
周金豪
牛永生
胡聪伟
窦强
李晴暖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Applied Physics of CAS
Original Assignee
Shanghai Institute of Applied Physics of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Institute of Applied Physics of CAS filed Critical Shanghai Institute of Applied Physics of CAS
Priority to CN201820061345.1U priority Critical patent/CN208250432U/en
Application granted granted Critical
Publication of CN208250432U publication Critical patent/CN208250432U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Landscapes

  • Inorganic Compounds Of Heavy Metals (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

The utility model discloses a kind of reaction unit for molten salt system uranium fluorination reaction.The reaction unit includes fluorination reactor, which is characterized in that the inner wall of fluorination reactor is equipped with a thickness of 2-5mm crucible lining, and crucible lining is nickel metallic crucible liner, nickel-base alloy crucible lining, ceramic crucible liner or graphite crucible liner；Pipeline where the product gas outlet of fluorination reactor is equipped with filter, filtration pack in filter is the fluoride particles that partial size is 2-6mm, and fluoride particles are one of sodium fluoride particle, magnesium fluoride particle, fluorination titanate particle and fluorination k particle or a variety of；The filling diameter of filtration pack is 3-10cm, and the ratio of the filling diameter of the packed height and filtration pack of filtration pack is 3-10.The reaction unit can resist the dual corrosion of high temperature villiaumite and fluorine gas, will not cause the blocking of reactor outlet tracheae and valve, it can be achieved that the long-term safety of reactor is run.

Description

A kind of reaction unit for molten salt system uranium fluorination reaction
Technical field
The utility model relates to a kind of reaction units for molten salt system uranium fluorination reaction.
Background technique
Without using water as solvent in spentnuclear fuel dry method last handling process, main separating step carries out at high temperature. In addition, the process of spentnuclear fuel dry method post-processing has many advantages, such as that radiation resistance, low critical risk, radioactive waste are few, suitable treatment High burnup, short cooling phase spentnuclear fuel.Fluorination volatilization technology is important dry method post-processing technology, by being reacted as follows by lower valency Uranium fluorination is high-valence state fluoride UF6:
UF4(d)+F2(g)→UF6(g)
Utilize UF6Low boiling point, the volatile separation and recycling that uranium may be implemented, be usually used in natural uranium conversion, uranium combustion The fields such as recycling of uranium in the purifying and concentration of material and MOX or uranium-bearing hardware.
Molten salt reactor is to melt nuclear fuel to be used as one of the liquid fluorinated salt of coolant fluid fueled reactor.Molten salt reactor The concept attention new by scientific circles in last century end and the beginning of this century, be chosen as 6 of forth generation reactor candidate heap-type it One.The big advantage of the one of molten salt reactor is the closed loop mode work of thorium base nuclear fuel and uranium base nuclear fuel utilization.Mode closed loop (follow by enclosed Ring) it is also known as nuclear fuel recycling, it is to prepare and used into heap again by spentnuclear fuel (used nuclear fuel), nuclear fuel, it is real Nuclear fuel cycle process is now repeated several times.The separation and recycling of molten salt reactor center fuel uranium are to realize molten salt reactor nuclear fuel cycle It is crucial.And fluorination volatilization technology can be achieved to the recycling of molten salt system uranium, realize the nuclear fuel cycle of molten salt reactor.
However, place of the existing fluorination reactor as fluorination reaction faces high temperature fluorine with since material selection is improper The dual corrosion of salt and fluorine gas, and after solid corrosion product and salt fog are less easily entrained by, condensation and meeting above reactor Lead to the blocking of reactor outlet tracheae and valve, the presence of above-mentioned technical problem is also difficult to ensure the long-term safety of reactor Operation.
Utility model content
Technical problem to be solved in the utility model is to overcome fluorination reactor in the prior art that can not support The dual corrosion of villiaumite and fluorine gas resistant to high temperatures, the solid corrosion product being less easily entrained by and salt fog are above reactor It condenses and will lead to the blocking of reactor outlet tracheae and valve and then be difficult to ensure lacking for the long-term safety operation of reactor It falls into, and a kind of novel reaction unit for molten salt system uranium fluorination reaction is provided.The reaction unit can resist high temperature fluorine The dual corrosion of salt and fluorine gas, and the blocking of reactor outlet tracheae and valve will not be caused, reactor may be implemented Long-term safety operation.
The utility model solves above-mentioned technical problem by following technical proposals:
The utility model provides a kind of reaction unit for molten salt system uranium fluorination reaction, and the reaction unit includes fluorine Change reactor, the inner wall of the fluorination reactor is equipped with crucible lining, and the crucible lining with molten salt system for contacting, institute State crucible lining with a thickness of 2-5mm, the crucible lining is nickel metallic crucible liner, nickel-base alloy crucible lining, ceramic earthenware Crucible liner or graphite crucible liner；Pipeline where the product gas outlet of the fluorination reactor is equipped with filter, described Filtration pack in filter is fluoride particles；The partial size of the fluoride particles is 2-6mm；The filtration pack Filling diameter is 3-10cm, and the packed height of the filtration pack and the ratio of the filling diameter of the filtration pack are 3- 10。
The fluoride particles are generally used for as known to those skilled in the art in the gaseous product of retention fluorination reactor Corrosion products, preferably, the fluoride particles are sodium fluoride particle, magnesium fluoride particle, fluorination titanate particle and potassium fluoride One of grain is a variety of；More preferably, the fluoride particles are sodium fluoride particle.
Preferably, the filter has dismountable bottom.
In the utility model, the fluorination reactor routinely includes autoclave body, kettle cover and kettle cover heating furnace by this field, described Kettle cover is removably covered on above the autoclave body, such as be can be used and opened flange fastly, and the kettle cover heating furnace is used for the kettle Lid provides heat；And the fluorination reactor is routinely equipped with inert gas entrance by this field.
Wherein, preferably, the product gas outlet is set on the kettle cover, the product gas outlet is vertical by one Pipeline is connected to the filter.
Wherein, preferably, the inert gas entrance is set on the kettle cover, pressure detecting member is additionally provided on the kettle cover Part is also covered with thermal insulation material on the kettle cover.
In the utility model, the material of the fluorination reactor can be the material that this field routinely uses, such as can be by gold Belong to alloy to be made.
In the utility model, the fluorination reactor is routinely equipped with snorkel by this field, and the snorkel is used for fluorine The gaseous mixture of gas and argon gas is passed through the inner cavity of the fluorination reactor, and the snorkel is protruded into from the side wall of the fluorination reactor In the cavity of the fluorination reactor, and removably it is connected on the inner sidewall of the fluorination reactor.Preferably, described logical Tracheae has head end and bottom end, and the bottom center of the inner cavity of the fluorination reactor is stretched in the bottom end of the snorkel, and described The bottom end of snorkel is equipped with gas distributor；The material of the snorkel can for nickel metal, nickel-base alloy, stainless steel, copper, gold, Any one of silver, platinum, graphite and silicon carbide.
Preferably, the reaction unit further includes purification feed channel, the clean gas outlet of the filter and the purification Feed channel removably connects, such as can be used and open flanged joint fastly.
Preferably, the reaction unit is additionally provided with temperature sleeves, side wall of the temperature sleeves from the fluorination reactor The inner cavity of the fluorination reactor is protruded into, and is removably connected on the inner sidewall of the fluorination reactor；The temperature set Pipe is provided with temperature thermocouple for measuring the temperature of reaction system in the fluorination reactor.More preferably, the temperature sleeves Material can be any one of for nickel metal, nickel-base alloy, stainless steel, copper, gold, silver, platinum, graphite and silicon carbide.
Preferably, the reaction unit further includes heater, the heater is separable to be set in the fluorination reaction Outside device, for the side wall and bottom wall offer heat to the fluorination reactor, and insulating layer is also covered with outside the heater.More preferably Ground, the heater is liftable to be set on vertical supporting rod.
Without prejudice to the field on the basis of common sense, above-mentioned each optimum condition, can any combination it is each to get the utility model Preferred embodiments.
The utility model agents useful for same and raw material are commercially available.
The positive effect of the utility model is: the utility model provides a kind of novel for molten salt system uranium fluorine Change the reaction unit of reaction.The reaction unit can resist change during the fluorination volatilization batch processed of high-temperature molten salt system uranium Learn corrosion and High Temperature Hot-corrosion Behaviorof, and condensation of the reaction product above reactor will not be caused, will not cause to export tracheae with And the blocking of valve, the long-term safety operation of reactor may be implemented.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the reaction unit for molten salt system uranium fluorination reaction of the utility model embodiment 1.
Description of symbols:
Fluorination reactor 1
Filter 2
Snorkel 3
Crucible lining 4
Inert gas entrance 5
Product gas outlet 6
Gaseous product entrance 7
Filtration pack 8
Purify feed channel 9
Flange 10 is opened fastly
Temperature sleeves 11
Specific embodiment
The utility model is further illustrated below by the mode of embodiment, but is not therefore limited in the utility model Among the embodiment described range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, Or it is selected according to product manual.
Embodiment 1
One, the reaction unit for molten salt system uranium fluorination reaction
Reaction unit for molten salt system uranium fluorination reaction as shown in Figure 1, reaction unit include fluorination reactor 1, Filter 2 and snorkel 3；The inner wall of fluorination reactor 1 is equipped with nickel metallic crucible liner 4, crucible lining 4 with a thickness of 2mm, For crucible lining 4 for contacting with molten salt system, fluorination reactor 1 is additionally provided with inert gas entrance 5 and product gas outlet 6；It is logical Tracheae 3 is used to for the gaseous mixture of fluorine gas and argon gas being passed through the inner cavity of fluorination reactor 1；Filter 2 is equipped with 7 He of gaseous product entrance Clean gas outlet is filled with filtration pack 8, filtering in the filter 2 between gaseous product entrance 7 and clean gas outlet Filler 8 is NaF particle, and the partial size of fluoride particles is 2-6mm；The filling diameter of filtration pack 8 is 3cm, filled by filtration The ratio of the filling diameter of the packed height and filtration pack 8 of object 8 is 10；Product gas outlet 6 and gaseous product entrance 7 connect It is logical.
Fluorination reactor 1 is made of metal alloy.
Fluorination reactor 1 includes autoclave body, kettle cover and kettle cover heating furnace, and kettle cover use is opened flange 10 fastly and is covered on autoclave body Side, kettle cover heating furnace are used to provide heat to kettle cover；Product gas outlet 6 and inert gas entrance 5 are set on kettle cover, on kettle cover It is additionally provided with pressure detecting element, is also covered with thermal insulation material on kettle cover.
Filter 2 has dismountable bottom, and gaseous product entrance 7 is set to the bottom of filter 2, product gas outlet 6 It is connected to gaseous product entrance 7 by straight tube.
Snorkel 3 is removably connected to fluorine out of the side wall of fluorination reactor 1 protrudes into fluorination reactor 1 cavity On the inner sidewall for changing reactor 1.Snorkel 3 has head end and bottom end, and the inner cavity of fluorination reactor 1 is stretched in the bottom end of snorkel 3 Bottom center, and the bottom end of snorkel 3 be equipped with gas distributor；Snorkel 3 is made of graphite.
Reaction unit further includes purification feed channel 9, and clean gas outlet is opened flange 10 fastly with the purification use of feed channel 9 and connect.
Reaction unit is additionally provided with temperature sleeves 11, and temperature sleeves 11 protrude into fluorination reactor 1 from the side wall of fluorination reactor 1 Inner cavity, and be removably connected on the inner sidewall of fluorination reactor 1；Temperature sleeves 11 are provided with temperature thermocouple for surveying Measure the temperature of reaction system in fluorination reactor 1.Temperature sleeves 11 are made of graphite.
Reaction unit further includes heater, and heater is separable to be set in outside fluorination reactor 1, is used for fluorination reaction The side wall and bottom wall of device 1 provide heat, and insulating layer is also covered with outside heater.Heater is liftable to be set on vertical supporting rod.
Two, the operation method of the above-mentioned reaction unit for molten salt system uranium fluorination reaction
Operation method includes the following steps:
(1) by solid FLiBe fused salt that uranium content is 8wt%, (the FLiBe fused salt is LiF-BeF2Co-melting salt, and LiF And BeF2Molar ratio be 67:33) be packed into fluorination reactor 1 inner cavity, cover kettle cover, with pure argon replace removal reaction system In air and water；
(2) heater makes the temperature of fused salt, to after 200 DEG C, keep the temperature 2h by room temperature；At the end of heat preservation, use is pure Atmosphere in argon gas displacement fluorination reactor 1, displacement number are 3 times；Continue to heat up, after so that temperature is warming up to 400 DEG C by 200 DEG C, Keep the temperature 2h；At the end of heat preservation, then with atmosphere in pure argon displacement fluorination reactor 1, replacing number is 3 times, heated to remove The water generated in journey；Continue to heat, temperature is made to reach 550 DEG C, 3h is kept the temperature, until fused salt melts completely；
(3) reaction gas that flow is 0.4L/min is passed through into fluorination reactor 1 by mass flowmenter, which is The gaseous mixture of fluorine gas and argon gas, and the volume fraction of fluorine gas is 20%；
(4) after gas liquid reaction, stop heating, stop logical reaction gas, using flow velocity instead is the argon gas of 0.6L/min to fluorine Change reactor 1 and blowing pipeline 30min；Then system is vacuumized, so circulation is 6 times total, opens kettle cover, takes out fused salt.
Effect data: after tested, U content is 20ppm, possible corrosion product element such as Cr, Ni, Fe in fused salt after fluorination Content do not obviously increase.
It is indicated above that nickel crucible liner 4 can be effectively protected reactor, and avoid corrosion product to processing medium Pollution；Entire reaction process gas circulation is unobstructed, does not occur road blocking of working off one's feeling vent one's spleen, and reaction product does not also occur above reactor Condensation deposition.
Embodiment 2
One, the reaction unit for molten salt system uranium fluorination reaction
Reaction unit for molten salt system uranium fluorination reaction as shown in Figure 1, the inner wall of fluorination reactor 1 are equipped with Ceramic crucible liner 4, crucible lining 4 with a thickness of 2mm, filtration pack 8 is magnesium fluoride, and the partial size of fluoride particles is 2- 6mm；The filling diameter of filtration pack 8 is 10cm, the packed height of filtration pack 8 and the filling diameter of filtration pack 8 Ratio be 3, snorkel 3 is made of silicon carbide, and temperature sleeves 11 are made of silicon carbide, remaining is the same as embodiment 1.
Two, the operation method of the above-mentioned reaction unit for molten salt system uranium fluorination reaction
Operation method includes the following steps:
(1) KF-ZrF for being 8wt% by uranium content4Co-melting salt (KF and ZrF in the co-melting salt4Molar ratio be 58:42) dress The inner cavity for entering fluorination reactor 1, covers kettle cover, replaces the air and water in removal reaction system with pure argon；
(2) heater makes the temperature of fused salt, to after 150 DEG C, keep the temperature 2h by room temperature；At the end of heat preservation, use is pure Atmosphere in argon gas displacement fluorination reactor 1, displacement number are 3 times；Continue to heat up, after so that temperature is warming up to 380 DEG C by 150 DEG C, Keep the temperature 2h；At the end of heat preservation, then with atmosphere in pure argon displacement fluorination reactor 1, replacing number is 3 times, heated to remove The water generated in journey；Continue to heat, so that temperature is reached 500 DEG C, heat preservation melts completely to fused salt；
(3) reaction gas that flow is 0.2L/min is passed through into fluorination reactor 1 by mass flowmenter, which is The gaseous mixture of fluorine gas and argon gas, and the volume fraction of fluorine gas is 5%；
(4) after gas liquid reaction, stop heating, stop logical reaction gas, using flow velocity instead is the argon gas of 0.5L/min to fluorine Change reactor 1 and blowing pipeline 30min；Then system is vacuumized, so circulation is 6 times total, opens kettle cover, takes out fused salt.
Effect data: after tested, U content is 25ppm, possible corrosion product element such as Cr, Ni, Fe in fused salt after fluorination Content do not obviously increase.
It is indicated above that ceramic crucible liner 4 can be effectively protected reactor, and avoid corrosion product to processing medium Pollution；Entire reaction process gas circulation is unobstructed, does not occur road blocking of working off one's feeling vent one's spleen, and reaction product is not also sent out above reactor Raw and cold retrogradation product.
Embodiment 3
One, the reaction unit for molten salt system uranium fluorination reaction
Reaction unit for molten salt system uranium fluorination reaction as shown in Figure 1, the inner wall of fluorination reactor 1 are equipped with Graphite crucible liner 4, crucible lining 4 with a thickness of 5mm, filtration pack 8 is fluorination titanate particle and fluorination k particle, fluoride The partial size of particle is 2-6mm；The filling diameter of filtration pack 8 is 10cm, the packed height and filled by filtration of filtration pack 8 The ratio of the filling diameter of object 8 is 10, and snorkel 3 is made of nickel metal, and temperature sleeves 11 are made of nickel metal, remaining is the same as real Apply example 1.
Two, the operation method of the above-mentioned reaction unit for molten salt system uranium fluorination reaction
Operation method includes the following steps:
(1) NaF-ZrF for being 8wt% by uranium content4Co-melting salt (NaF and ZrF in the co-melting salt4Molar ratio than 58: 42) it is packed into the inner cavity of fluorination reactor 1, covers kettle cover, replaces the air and water in removal reaction system with pure argon；
(2) heater makes the temperature of fused salt, to after 250 DEG C, keep the temperature 3h by room temperature；At the end of heat preservation, use is pure Atmosphere in argon gas displacement fluorination reactor 1, displacement number are 8 times；Continue to heat up, after so that temperature is warming up to 420 DEG C by 250 DEG C, Keep the temperature 3h；At the end of heat preservation, then with atmosphere in pure argon displacement fluorination reactor 1, replacing number is 8 times, heated to remove The water generated in journey；Continue to heat, so that temperature is reached 600 DEG C, heat preservation melts completely to fused salt；
(3) reaction gas that flow is 2L/min is passed through into fluorination reactor 1 by mass flowmenter, which is fluorine The gaseous mixture of gas and argon gas, and the volume fraction of fluorine gas is 20%；
(4) after gas liquid reaction, stop heating, stop logical reaction gas, using flow velocity instead is the argon gas of 1L/min to fluorination Reactor 1 and blowing pipeline 2h；Then system is vacuumized, so circulation is 6 times total, opens kettle cover, takes out fused salt.
Effect data: after tested, U content is 15ppm, possible corrosion product element such as Cr, Ni, Fe in fused salt after fluorination Content do not obviously increase.
It is indicated above that graphite crucible liner 4 can be effectively protected reactor, and avoid corrosion product to processing medium Pollution；Entire reaction process gas circulation is unobstructed, does not occur road blocking of working off one's feeling vent one's spleen, and reaction product is not also sent out above reactor Raw and cold retrogradation product
Comparative example 1
One, the reaction unit for molten salt system uranium fluorination reaction
Reaction unit for molten salt system uranium fluorination reaction as shown in Figure 1, filtration pack 8 are sintrered nickel, remaining With embodiment 1.
Two, the operation method of the above-mentioned reaction unit for molten salt system uranium fluorination reaction
Operation method includes the following steps:
(1) by solid FLiBe fused salt that uranium content is 8wt%, (the FLiBe fused salt is LiF-BeF2Co-melting salt, and LiF And BeF2Molar ratio be 67:33) be packed into fluorination reactor 1 inner cavity, cover kettle cover, with pure argon replace removal reaction system In air and water；
(2) heater makes the temperature of fused salt, to after 200 DEG C, keep the temperature 2h by room temperature；At the end of heat preservation, use is pure Atmosphere in argon gas displacement fluorination reactor 1；Continue to heat up, after so that temperature is warming up to 400 DEG C by 200 DEG C, keeps the temperature 2h；Heat preservation terminates When, then with atmosphere in pure argon displacement fluorination reactor 1, to remove the water generated in heating process；Continue to heat, reaches temperature To 550 DEG C, 3h is kept the temperature, until fused salt melts completely；
(3) reaction gas that flow is 0.4L/min is passed through into fluorination reactor 1 by mass flowmenter, which is The gaseous mixture of fluorine gas and argon gas, and the volume fraction of fluorine gas is 20%；
(4) discovery reactor pressure persistently rises after ventilation 20min, and gas vent blocks, and stops ventilation, reacts quilt Compel to stop, stops heating.Filter 2 is opened after being down to room temperature finds that sintrered nickel filter core has blocked.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that These are merely examples, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art Member can make numerous variations or be repaired to these embodiments under the premise of without departing substantially from the principles of the present invention and essence Change, but these change and modification each fall within the protection scope of the utility model.

Claims (8)

1. a kind of reaction unit for molten salt system uranium fluorination reaction, the reaction unit includes fluorination reactor, feature It is, the inner wall of the fluorination reactor is equipped with crucible lining, and the crucible lining with molten salt system for contacting, the earthenware Crucible liner with a thickness of 2-5mm, the crucible lining is nickel metallic crucible liner, nickel-base alloy crucible lining, in ceramic crucible Lining or graphite crucible liner；Pipeline where the product gas outlet of the fluorination reactor is equipped with filter, the filtering Filtration pack in device is fluoride particles；The partial size of the fluoride particles is 2-6mm；The filling of the filtration pack Diameter is 3-10cm, and the ratio of the filling diameter of the packed height of the filtration pack and the filtration pack is 3-10.
2. being used for the reaction unit of molten salt system uranium fluorination reaction as described in claim 1, which is characterized in that the filter With dismountable bottom.
3. being used for the reaction unit of molten salt system uranium fluorination reaction as described in claim 1, which is characterized in that the gas produces Object outlet is set on the kettle cover of the fluorination reactor, and the product gas outlet is connected by a vertical pipeline and the filter It is logical.
4. being used for the reaction unit of molten salt system uranium fluorination reaction as claimed in claim 3, which is characterized in that on the kettle cover Equipped with inert gas entrance, it is additionally provided with pressure detecting element on the kettle cover, is also covered with thermal insulation material on the kettle cover.
5. being used for the reaction unit of molten salt system uranium fluorination reaction as described in claim 1, which is characterized in that the fluorination is anti- Device is answered to be equipped with snorkel, the snorkel is used to for the gaseous mixture of fluorine gas and argon gas being passed through the inner cavity of the fluorination reactor, institute Snorkel is stated out of, the side wall of the fluorination reactor protrudes into the fluorination reactor cavity, and is removably connected to described On the inner sidewall of fluorination reactor.
6. being used for the reaction unit of molten salt system uranium fluorination reaction as claimed in claim 5, which is characterized in that the snorkel With head end and bottom end, the bottom center of the inner cavity of the fluorination reactor, and the ventilation are stretched in the bottom end of the snorkel The bottom end of pipe is equipped with gas distributor；The material of the snorkel is nickel metal, nickel-base alloy, stainless steel, copper, gold, silver, platinum Any one of gold, graphite and silicon carbide.
7. being used for the reaction unit of molten salt system uranium fluorination reaction as described in claim 1, which is characterized in that the reaction dress It sets and is additionally provided with temperature sleeves, the temperature sleeves protrude into the inner cavity of the fluorination reactor from the side wall of the fluorination reactor, And it is removably connected on the inner sidewall of the fluorination reactor；The temperature sleeves are provided with temperature thermocouple for measuring The temperature of reaction system in the fluorination reactor, the materials of the temperature sleeves be nickel metal, nickel-base alloy, stainless steel, copper, Any one of gold, silver, platinum, graphite and silicon carbide.
8. being used for the reaction unit of molten salt system uranium fluorination reaction as described in claim 1, which is characterized in that the reaction dress Setting further includes heater, and the heater is separable to be set in outside the fluorination reactor, is used for the fluorination reactor Side wall and bottom wall heat is provided, and be also covered with insulating layer outside the heater, the heater is liftable, and to be set to support perpendicular On bar.
CN201820061345.1U 2018-01-15 2018-01-15 A kind of reaction unit for molten salt system uranium fluorination reaction Active CN208250432U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820061345.1U CN208250432U (en) 2018-01-15 2018-01-15 A kind of reaction unit for molten salt system uranium fluorination reaction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820061345.1U CN208250432U (en) 2018-01-15 2018-01-15 A kind of reaction unit for molten salt system uranium fluorination reaction

Publications (1)

Publication Number Publication Date
CN208250432U true CN208250432U (en) 2018-12-18

Family

ID=64620210

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820061345.1U Active CN208250432U (en) 2018-01-15 2018-01-15 A kind of reaction unit for molten salt system uranium fluorination reaction

Country Status (1)

Country Link
CN (1) CN208250432U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110042434A (en) * 2018-01-15 2019-07-23 中国科学院上海应用物理研究所 Reaction unit and its operation method for molten salt system uranium fluorination reaction
CN110194494A (en) * 2019-06-26 2019-09-03 中国科学院上海应用物理研究所 A method of uranium is recycled by fluorization agent fluorination volatilization of Nitrogen trifluoride
CN112191287A (en) * 2020-09-30 2021-01-08 中国核动力研究设计院 Full-automatic release mechanism for high-temperature melt and control method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110042434A (en) * 2018-01-15 2019-07-23 中国科学院上海应用物理研究所 Reaction unit and its operation method for molten salt system uranium fluorination reaction
CN110042434B (en) * 2018-01-15 2024-04-12 中国科学院上海应用物理研究所 Reaction device for uranium fluorination reaction of molten salt system and operation method thereof
CN110194494A (en) * 2019-06-26 2019-09-03 中国科学院上海应用物理研究所 A method of uranium is recycled by fluorization agent fluorination volatilization of Nitrogen trifluoride
CN112191287A (en) * 2020-09-30 2021-01-08 中国核动力研究设计院 Full-automatic release mechanism for high-temperature melt and control method thereof
CN112191287B (en) * 2020-09-30 2021-11-02 中国核动力研究设计院 Full-automatic release mechanism for high-temperature melt and control method thereof

Similar Documents

Publication Publication Date Title
CN208250432U (en) A kind of reaction unit for molten salt system uranium fluorination reaction
CN110042434A (en) Reaction unit and its operation method for molten salt system uranium fluorination reaction
US4356029A (en) Titanium product collection in a plasma reactor
CN209612365U (en) The filtering and purifying of solid inclusions in a kind of removal fused salt
CN202193821U (en) Vacuum remelting and refining furnace for high-purity crystallizing magnesium
CN104801725B (en) A kind of reaction unit of sodium reduction potassium floutaramite and manufacture the method for tantalum powder with it
CN103143184B (en) Distillation apparatus
CN111097920B (en) Method for producing magnesium-lithium alloy by gaseous co-condensation method
Nikolaev et al. Purification of alkali-metal chlorides by zone recrystallization for use in pyrochemical processing of spent nuclear fuel
JP2022547498A (en) Method for producing high-purity metallic lithium by vacuum thermal reduction method
CN101987725A (en) Method and equipment for producing selenium dioxide by using crude selenium as raw material
CN201842881U (en) Vacuum reduction equipment for directly producing magnesium from magnesite in one-step method
CN106219488B (en) A kind of method and device preparing hydrochloric acid and purifying quartz sand
CN203440069U (en) Fusion furnace for preparing fused salt
Kroll et al. Large‐scale laboratory production of ductile zirconium
Rasmussen et al. Preparing plutonium metal via the chloride process
CN216826132U (en) Bubbling reaction device
Mc Creary High-purity calcium
CN104599733B (en) Self-discharging vertical radioactive iodine-131 distilling apparatus
US2824799A (en) Process for sintering and recovering sponge metal
CN114405419A (en) Bubbling reaction device and application
Kroll et al. Production of malleable zirconium on a pilot-plant scale
US3271132A (en) Method and apparatus for the treatment of aluminum
CN110453084B (en) Preparation method of atomic-level sponge zirconium
CN210409572U (en) Reation kettle tail gas recovery unit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant