CN1594615A - Sodium purifying process and purification system thereof - Google Patents
Sodium purifying process and purification system thereof Download PDFInfo
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- CN1594615A CN1594615A CN 03156781 CN03156781A CN1594615A CN 1594615 A CN1594615 A CN 1594615A CN 03156781 CN03156781 CN 03156781 CN 03156781 A CN03156781 A CN 03156781A CN 1594615 A CN1594615 A CN 1594615A
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Abstract
The invention belongs to alkali metals refinement field, more specificly it relates to the nucleus-grade sodium refinement process and its refinement system for reactor. The process comprises calcium reaction, two stage precipitation and two stage filtering. The refinement system mainly comprises sodium receiving tank, calcium removing reactor, first stage precipitator, first stage filter, second stage precipitator, second stage filter, sodium storage tank and spare cold trap purging loop. The refinement process can make calcium content reduce to below 0.001% from 0.045% of industrial sodium, oxygen content reduce to below 0.003% from 0.025%.
Description
Technical field
The invention belongs to alkali-metal field of purification, be specifically related to purification process and the purification system thereof of a kind of reactor with nuclear grade sodium.
Background technology
There are metallic impurity such as nonmetallic impurity such as oxygen, carbon, hydrogen, nitrogen and calcium, magnesium, iron, manganese in the sodium in a large number in industry, and these impurity are suspended in the sodium with simple substance or the dissolving of compound state or with graininess, form precipitation easily in karyonide system or non-karyonide system.These throw outs flock together and can hinder the proper flow of refrigerant, influence the works better of device.Therefore, industrial sodium must be purified, remove impurity such as calcium in the sodium, oxygen, hydrogen, carbon to satisfy the needs of reactor.
The Baklushin of USSR (Union of Soviet Socialist Republics), people such as-R.P. have reported the purification of the master loop and the secondary sodium of fast reactor on p.224-228 at Atomnaya-Ehnergiya-USSR. (Mar 1978) .v 44 (3).But the disclosed purification process of the document is fast reactor purifying in labour with sodium, the main purpose of its purification is to remove through impurity such as emerging oxygen, hydrogen, irradiation product in the long playing nuclear grade sodium, therefore, its technology directly is cleaned into the different of nuclear grade sodium with industrial sodium together with system.
People such as Xing Chaoqing disclose the deliming technology of a kind of fast reactor with sodium at " nuclear power engineering " the 16th volume the 5th phase 476-480 page or leaf.This technology is with suitable Na
2O
2After charging in the batch reactor by feeder, under 350 ℃ of temperature,, filter, be pressed into then in the storage sodium jar, wait for the further processing of comprehensive sodium purification circuit with technical grade sodium reaction 24 hours.This technology mainly is that the calcium in the industrial sodium is removed, and system is simple, can not effectively other impurity in the industrial sodium be removed effectively, to reach the standard of nuclear grade sodium.And the technology that the document provides can only be used for the experimental study stage, is difficult to be applied to technical scale.
Summary of the invention
The present invention provides a kind of energy mass-producing ground industrial sodium to be cleaned into the technology and the corresponding purification system thereof of nuclear grade sodium on the basis of existing deliming technology.
A kind of sodium purification process, its technical process is:
1. deliming reaction
With the OAC coefficient 1.2～1.5 reaction reagent Na
2O
2Join in the calcium-removing reactor, be pressed into pending industrial sodium again, stir, and to keep temperature of reaction be 300 ℃～360 ℃, reacted 15～30 hours.
OAC is the oxygen coefficient of discharge, and definition is: OAC=(outer oxygen-adding amount+former aerobic amount)/equivalent oxygen requirement.
2. first grade subsides
Behind the intact sodium cooling to 190 of question response ℃～210 ℃, entered in the first grade subsides device sedimentation impurity 40～50 hours.Keep 130 ℃～150 ℃ low temperature at first grade subsides device inner bottom part, and keep first grade subsides device upper temp to be higher than temperature of lower.
3. one-level is filtered
Sodium after sedimentation is passed through 135 ℃～145 ℃ silk screen filled-type cold-trap, filter.
4. secondary sedimentation
The filtering sodium of one-level was transferred in the secondary settling vessel sedimentation impurity 40～50 hours.Keep 130 ℃～150 ℃ low temperature equally at secondary settling vessel inner bottom part, and keep upper temp to be higher than bottom temp.
5. cascade filtration
To under 110 ℃～130 ℃ temperature, filter through the sodium after the secondary sedimentation by Stainless Steel Cloth, stainless ceramic duplex filter.After the filtration qualified sodium is filled in the whole basin.
Be the discharging of sodium slag in addition.The impurity in the I and II settling vessel bottom deposit district after operation for some time in confined conditions, can adopt modes such as negative pressure emission, malleation discharging or recoil stirring discharging to discharge.
What match with above-mentioned technology is sodium clean-up system, comprise sodium receiving tank, calcium-removing reactor, between calcium-removing reactor and sodium receiving tank, be connected with first grade subsides device, grade one filter, secondary settling vessel, secondary filter, sodium hold tank in turn, and be connected with vapour trap on calcium-removing reactor, first grade subsides device and the secondary settling vessel by pipeline and valve.
Defective in order to prevent the product through secondary filtration, at secondary filter with receive and be provided with a minor loop between the hold tank.
It is barrel-shaped that calcium-removing reactor is, and top is provided with the sodium import and export, and crown center is provided with whipping appts, is provided with heater block around the whipping appts, and outer wall is provided with cooling jacket.Whipping appts can be by the magnetic force driving sealing and prevent vapour colloidal sol consolidated structure, and impeller is rotated, and plays the effect of stirring.Can also be the conduit of root bottom part sealing, side-wall hole, this conduit communicates with argon system, by being blown into argon gas, plays the purpose of stirring.
It is barrel-shaped that vapour trap is, in establish Stainless Steel Cloth and thermopair, the bottom is taper, and is provided with sodium steam and enters pipeline.The top of vapour trap is respectively equipped with the argon gas import and export, links to each other with argon system, by argon gas sodium vapor is cooled to Liquid Sodium, along the inwall backflow of vapour trap.
I and II settling vessel top is cylindricality, and the bottom is tapered, and its top has the import and export of sodium, and links to each other with vapour trap, and the bottom is got rid of pipeline with the sodium slag and linked to each other by valve, in establish hygrosensor, liquidometer and heating rod.Its type of heating can also be to be provided with annular end heater strip on outer wall, and distribution is a upper tightly lower sparse.
Grade one filter can be a silk screen filled-type cold-trap, or is similar to silk screen filled-type cold-trap.Silk screen filled-type cold-trap is barrel-shaped, in establish the ring stainless steel silk screen, the bottom of ring stainless steel silk screen links to each other with the inwall of one-level strainer, top is interior pipe sealing-in.Outer wall is provided with cooling jacket.The top of cold-trap is provided with the entrance and exit pipe of sodium, and wherein outlet pipe passes the ring stainless steel twine, extend into the bottom of cold-trap.Being similar to silk screen filled-type cold-trap structure of filter is, sets up the inlet of sodium in the bottom of barrel containers, and the outlet of sodium is set up at the top.In establish upper and lower shunting orifice plate, upper and lower shunting orifice plate links to each other with the inwall of barrel containers, the centre is provided with the centre bearing post, the centre bearing post is separately fixed on the upper and lower shunting orifice plate.Annular distributing damper arranged in a crossed manner and circular distributing damper between the upper and lower shunting orifice plate, wherein annular distributing damper is fixed on the inwall of barrel containers, and circular distributing damper is fixed on the centre bearing post.Between every layer of annular distributing damper and circular distributing damper, place Stainless Steel Cloth.
The two-grade dual strainer is barrel-shaped, the bottom of container is provided with the inlet of sodium, the top is provided with the outlet of sodium, the centre is provided with 4～7 stainless ceramic strainer tubes, stainless ceramic strainer tube group with basket Stainless Steel Cloth around, the top of stainless ceramic strainer tube group and basket Stainless Steel Cloth links to each other with the shunting orifice plate, and the shunting orifice plate links to each other with the duplex filter inwall.
Industrial sodium is cleaned into nuclear grade sodium, and its main indexes is, the content of calcium is dropped to below 0.001% by 0.045%, and the content of oxygen is reduced to below 0.003% by 0.025%.Method provided by the present invention is by the method for physics and chemistry, removes impurity such as calcium in the sodium, oxygen.In the I and II settling vessel, keep low temperature and thermograde up and down, except that the direct sedimentation of the reaction product that makes calcium, also make impurity that those solubility with temperature change equably crystallization, nucleation, grow up, and to cold-zone diffusion deposition, and finally remove.The classification baffle plate that is similar to silk screen filled-type cold-trap strainer both satisfied the distribution of sodium transverse flow in strainer, increased sodium again and flowed through time of strainer, improved purification efficiency.It is better that the filter effect ratio of silk screen filled-type cold-trap is similar to silk screen filled-type cold-trap, is suitable for large-scale purification technology.The two-grade dual strainer has played good decontamination effect improving under 110 ℃～130 ℃ temperature.The discharging of sodium slag can adopt modes such as negative pressure emission, malleation discharging or recoil stirring discharging to discharge in confined conditions, and discharging is stirred in not only economy but also safety, especially recoil can solve sodium slag agglomeration problems well.Operation purification process provided by the invention on purification system provided by the present invention can make the content of calcium in the industrial sodium, oxygen reduce to index below 0.001% and 0.003% respectively.
Description of drawings
Fig. 1 single loop sodium clean-up system schema;
Fig. 2 calcium-removing reactor structural representation;
Argon gas agitator structure synoptic diagram in Fig. 3 calcium-removing reactor;
Fig. 4 vapour trap structural representation;
Fig. 5 settling vessel structural representation;
Fig. 6 outer wall is tied with the settling vessel synoptic diagram of heater strip;
Fig. 7 silk screen filled-type cold-trap structural representation;
Fig. 8 is similar to silk screen filled-type cold-trap structural representation;
Fig. 9 two-grade dual structure of filter synoptic diagram.
Wherein 1, calcium-removing reactor, 2, the first grade subsides device, 3, grade one filter, 4, the secondary settling vessel, 5, the two-grade dual strainer, 6, the sodium storage tank, 7, sodium connects jar, 8, minor loop, 9, cooling jacket, 10, the heater strip conduit, 11, heater strip, 12, magnetic force driving sealing and prevent the aerosol consolidated structure, 13, magnetic motor, 14, impeller, 15, vapour trap, 16, charging opening, 17, baffle plate, 18, thermopair, 19, Stainless Steel Cloth, 20, sodium steam enters pipeline, 21,22,23, liquidometer, 24, hygrosensor, 25, radiator element, 26, sodium slag discharge tube, 27,28,29, heater strip, 30, annular distributing damper, 31, Stainless Steel Cloth, 32, central support posts, 33, the shunting orifice plate, 34, circular distributing damper, 35, cooling jacket, 36, the ring stainless steel silk screen, 37, the shunting orifice plate, 38, the sealing orifice plate, 39, stainless ceramic strainer tube group, 40, basket Stainless Steel Cloth.
Embodiment
Below will the present invention is further elaborated by specific embodiment.
A kind of sodium purification process, its technical process is:
With the OAC coefficient 1.4 reaction reagent Na
2O
2Add in the calcium-removing reactor 1, be pressed into pending industrial sodium from sodium receiving tank 7 again, stir, and to keep temperature of reaction be 350 ℃, reacted 28 hours.
When the sodium cooling to 200 that has reacted ℃, open valve and make it to enter into first grade subsides device 2 sedimentation impurity 45 hours.Keep 140 ℃ low temperature at first grade subsides device 2 inner bottom parts, and keep the temperature difference of first grade subsides device 2 tops and bottom.
Step 3 one-level is filtered
Make the sodium after sedimentation pass through 140 ℃ silk screen filled-type cold-trap 3, filter.
The sedimentation of step 4 secondary
Make sodium enter into secondary settling vessel 4, sedimentation impurity 45 hours through silk screen filled-type cold-trap 3.Keep 140 ℃ low temperature at secondary settling vessel inner bottom part, and keep the temperature difference of secondary settling vessel 4 tops and bottom.
Make through the two-grade dual strainer 5 of the sodium after 4 sedimentations of secondary settling vessel and filter by 120 ℃.
After the filtration qualified sodium is filled in the sodium hold tank 6.Underproof sodium purifies through a standby cold-trap purification circuit 8 again, fills in the sodium hold tank 6 after qualified again.
The discharging of step 6 sodium slag
The impurity in the bottom deposit district of the I and II settling vessel after operation for some time in confined conditions, adopts recoil to stir the discharging modes discharging.
With the purification system of the supporting enforcement of described purification process be:
A kind of sodium clean-up system, form by sodium receiving tank 7, calcium-removing reactor 1, first grade subsides device 2, grade one filter 3, secondary settling vessel 4, secondary filter 5, sodium hold tank 6 and pipeline, valve, airing system, instrument control electric system, and the outlet of the sodium of previous instrument links to each other with the sodium import of a back instrument.
Wherein calcium-removing reactor 1 is barrel-shaped as shown in Figure 2, and top is respectively equipped with sodium import and export and feeder 16, and inwall is provided with and prevents that the top has pipeline to link to each other with vapour trap 15 because of stirring the baffle plate 17 of generation eddy current.Be provided with mechanical stirring device in the middle of the staving, this whipping appts is sealed by magnetic force driving by magnetic motor 13 and prevents vapour colloidal sol consolidated structure 12, and impeller 14 is rotated, and plays the effect of stirring.6 heater strip conduits 10 that have vertical slot run through calcium-removing reactor 1 top, are evenly distributed in the calcium-removing reactor 1, run through heater strip 11 in the every heater strip conduit 10.Outer wall at calcium-removing reactor 1 is provided with cooling jacket 9, and interior blowing air is accelerated the cooling of calcium-removing reactor 1.
First grade subsides device 2, secondary settling vessel 4 are that top is cylindricality, the tapered container in bottom all as shown in Figure 5, and its top has the import and export of sodium, and are linked to each other with vapour trap 14 by pipeline, and bottom and sodium slag discharge tube 26 link to each other by valve.Establish hygrosensor 24 liquidometer different 21,22,23 in first grade subsides device 2, the secondary settling vessel 4 with length.In order to reach the settled purpose of the temperature difference better, evenly be furnished with the heater strip 27,28 of varying length in first grade subsides device 2, the secondary settling vessel 4, the hot spots on top is more than the bottom, simultaneously, bottom at first grade subsides device 2, secondary settling vessel 4 adds radiator element 25, can guarantee that like this head temperature is higher than bottom temp, the formation temperature gradient.
Grade one filter 3 is a silk screen filled-type cold-trap as shown in Figure 7, is barrel-shaped.In do not have ring stainless steel silk screen 36, the bottom of ring stainless steel silk screen 36 links to each other with the inwall of one-level strainer 3, top is interior pipe sealing-in.The top of grade one filter 3 is provided with the import and export of sodium, and wherein outlet pipe passes the sealing of going up of ring stainless steel silk screen 36, extend into the bottom of cold-trap.Outer wall at grade one filter 3 is provided with cooling jacket 35, and interior blowing air is accelerated the cooling of grade one filter 3.
Two-grade dual strainer 5 as shown in Figure 9, be barrel-shaped, the bottom of container is provided with the inlet of sodium, the top is provided with the outlet of sodium, the centre is provided with 4～7 stainless ceramic strainer tube groups 39, the basket Stainless Steel Cloth 40 of stainless ceramic strainer tube 39 usefulness links to each other with sealing orifice plate 38 around, the top of basket Stainless Steel Cloth 40, and stainless ceramic strainer tube 39 passes and seals orifice plate 38.Between sealing orifice plate 38 and sodium outlet, be provided with shunting orifice plate 37.
Use above-mentioned purification process and corresponding purification system, make the content of calcium drop to 0.0004%, the content of oxygen is reduced to 0.0021% by 0.0071%, meet the requirement of nuclear grade sodium by 0.0395%.
A kind of sodium purification process, its technical process is:
With the OAC coefficient 1.2 reaction reagent Na
2O
2Add in the calcium-removing reactor 1, be pressed into pending industrial sodium from sodium receiving tank 7 again, stir, and to keep temperature of reaction be 300 ℃, reacted 15 hours.
When the sodium cooling to 190 that has reacted ℃, open valve and make it to enter into first grade subsides device 2 sedimentation impurity 40 hours.Keep 130 ℃ low temperature at first grade subsides device 2 inner bottom parts, and keep upper temp and be higher than temperature of lower.
Step 3 one-level is filtered
Make the sodium after sedimentation pass through 135 ℃ silk screen filled-type cold-trap 3, filter.
The sedimentation of step 4 secondary
Make sodium enter into secondary settling vessel 4, sedimentation impurity 40 hours through silk screen filled-type cold-trap 3.Keep 130 ℃ low temperature at secondary settling vessel inner bottom part, and keep upper temp and be higher than temperature of lower.
Make through the two-grade dual strainer 5 of the sodium after 4 sedimentations of secondary settling vessel and filter by 110 ℃.
After the filtration qualified sodium is filled in the sodium hold tank 6.Underproof sodium purifies through a standby cold-trap purification circuit 8 again, fills in the hold tank 6 after qualified.
The discharging of step 6 sodium slag
The impurity in the bottom deposit district of the I and II settling vessel after operation for some time in confined conditions, adopts the discharging of malleation discharging modes.
With the purification system of the supporting enforcement of described purification process be:
A kind of sodium clean-up system is made up of sodium receiving tank 7, calcium-removing reactor 1, first grade subsides device 2, grade one filter 3, secondary settling vessel 4, two-grade dual strainer 5, sodium hold tank 6 and pipeline, valve, airing system, instrument control electric system.Wherein sodium receiving tank 7, two-grade dual strainer 5, sodium hold tank 6 are equal to embodiment 1, and the places different with embodiment 1 are:
The conduit of sealing, side-wall hole as shown in Figure 3 bottom whipping appts in the calcium-removing reactor 1 was one.This conduit communicates with argon system, by being blown into argon gas, plays the purpose of stirring.
The heater block of first grade subsides device 2, secondary settling vessel 4 is the heater strips 29 that are looped around on first grade subsides device 2, secondary settling vessel 4 outer walls, as shown in Figure 6.The distribution of this heater strip is a upper tightly lower sparse, is higher than bottom temp to guarantee first grade subsides device 2, secondary settling vessel 4 upper temps.
Grade one filter 3 is the cold-traps that are similar to the silk screen filled-type, as shown in Figure 8, is barrel shaped structure, and its bottom is provided with the sodium inlet, and the top is provided with the sodium outlet.In establish upper and lower shunting orifice plate 33, upper and lower shunting orifice plate 33 links to each other with the inwall of grade one filter 3, the centre is provided with centre bearing post 32, centre bearing post 32 is separately fixed on the upper and lower shunting orifice plate 33.Annular distributing damper 30 arranged in a crossed manner and circular distributing damper 34 between the upper and lower shunting orifice plate 33.Wherein annular distributing damper 30 is fixed on the inwall of grade one filter 3, and circular distributing damper 34 is fixed on the centre bearing post 32.Between every layer of annular distributing damper 30 and circular distributing damper 34, place Stainless Steel Cloth 31.
Use above-mentioned purification process and corresponding purification system, can make the content of calcium drop to 0.0006%, the content of oxygen is reduced to 0.0024% by 0.0071%, meet the requirement of nuclear grade sodium by 0.0395%.
Embodiment 3
A kind of sodium purification process, its technical process is:
With the OAC coefficient 1.5 reaction reagent Na
2O
2Add in the calcium-removing reactor 1, be pressed into pending industrial sodium from sodium receiving tank 7 again, stir, and to keep temperature of reaction be 360 ℃, reacted 30 hours.
When the sodium cooling to 210 that has reacted ℃, open valve and make it to enter into first grade subsides device 2 sedimentation impurity 50 hours.Keep 150 ℃ low temperature at first grade subsides device 2 inner bottom parts, and keep the temperature difference of first grade subsides device 2 tops and bottom.
Step 3 one-level is filtered
Make the sodium after sedimentation pass through 145 ℃ silk screen filled-type cold-trap 3, filter.
The sedimentation of step 4 secondary
Make sodium enter into secondary settling vessel 4, sedimentation impurity 50 hours through silk screen filled-type cold-trap 3.Keep 150 ℃ low temperature at secondary settling vessel inner bottom part, and keep the temperature difference of secondary settling vessel 4 tops and bottom.
Make through the two-grade dual strainer 5 of the sodium after 4 sedimentations of secondary settling vessel and filter by 130 ℃.
After the filtration qualified sodium is filled in the whole basin 6.Underproof sodium purifies through a standby cold-trap purification circuit 8 again, fills in the sodium hold tank 6 after qualified.
The discharging of step 6 sodium slag
The impurity in the bottom deposit district of the I and II settling vessel after operation for some time in confined conditions, adopts the negative pressure emission mode to discharge.
A kind of sodium clean-up system, the formation of each parts are with embodiment 1, and difference is that this system is made up of two loops, promptly connect the shunt circuit of calcium-removing reactor 1 up to two-grade dual strainer 5 and minor loop 8 at opposite side again in schema as shown in Figure 1.
Use above-mentioned purification process and corresponding purification system, make the content of calcium drop to 0.0001%, the content of oxygen is reduced to 0.0015% by 0.0071%, meet the requirement of nuclear grade sodium by 0.0395%.
Claims (14)
1. sodium purification process, concrete steps are:
(1). the deliming reaction
With the OAC coefficient 1.2～1.5 reaction reagent Na
2O
2Join in the calcium-removing reactor (1), from sodium receiving tank (7), be pressed into pending industrial sodium again, stir, and to keep temperature of reaction be 300 ℃～360 ℃, reacted 15～30 hours;
(2). first grade subsides
Behind the intact sodium cooling to 190 of question response ℃～210 ℃, entered in the first grade subsides device (2) sedimentation impurity 40～50 hours, keep 130 ℃～150 ℃ low temperature, and keep first grade subsides device upper temp and be higher than temperature of lower at first grade subsides device inner bottom part;
(3). one-level is filtered
Sodium after sedimentation is passed through 135 ℃～145 ℃ grade one filter (3), filter;
(4). the secondary sedimentation
The filtering sodium of one-level was transferred to the middle sedimentation impurity of secondary settling vessel (4) 40～50 hours.Keep 130 ℃～150 ℃ low temperature equally at secondary settling vessel (4) inner bottom part, and keep upper temp to be higher than bottom temp;
(5). cascade filtration
To under 110 ℃～130 ℃ temperature, filter through the sodium after the secondary sedimentation, after the filtration qualified sodium be filled in the sodium hold tank (6) by two-grade dual strainer (5).
2. a kind of sodium purification process according to claim 1 and 2 is characterized in that:
The OAC coefficient is 1.2～1.4 in the step (1), and temperature of reaction is 350 ℃, and the reaction times is 24 hours;
When the sodium cooling to 200 that has reacted ℃, be transferred in the first grade subsides device (2) in the step (2),, and keep the temperature difference of first grade subsides device (2) top and bottom 140 ℃ low temperature sedimentation impurity 45 hours;
In the step 3, the temperature of silk screen filled-type cold-trap (3) is 140 ℃;
In the step 4, sedimentation impurity is 45 hours under 140 ℃ low temperature, and keeps the temperature difference of secondary settling vessel (4) top and bottom;
In the step 5, duplex filter 5 filtering temperature are 120 ℃.
3. a kind of sodium purification process according to claim 1 and 2 is characterized in that: machine carries out using silk screen filled-type cold-trap or being similar to silk screen filled-type cold-trap when one-level is filtered.
4. a kind of sodium purification process according to claim 1 and 2 is characterized in that: through twice sedimentation, the also underproof sodium of twice filtration purifies minor loop (8) through a standby cold-trap again and purifies.
5. sodium clean-up system, comprise sodium receiving tank (7), calcium-removing reactor (1), it is characterized in that: between calcium-removing reactor (1) and sodium receiving tank (7), be connected with first grade subsides device (2), grade one filter (3), secondary settling vessel (4), secondary filter (5), sodium hold tank (6) in turn, and be connected with vapour trap (15) on calcium-removing reactor (1), first grade subsides device (2) and the secondary settling vessel (4) by pipeline and valve.
6. a kind of sodium clean-up system according to claim 5, it is characterized in that: described calcium-removing reactor (1) is barrel-shaped, top is respectively equipped with sodium import and export and charging opening (16), and link to each other with vapour trap (15), the centre is provided with whipping appts, be provided with heater block around it, outer wall is provided with air cooling chuck (9).
7. a kind of sodium clean-up system according to claim 6, it is characterized in that: whipping appts is made up of magnetic motor (13), the anti-vapour colloidal sol consolidated structure (12) of magnetic force driving sealing and impeller (14), inwall at calcium-removing reactor (1) is provided with the baffle plate (17) that prevents that eddy current from producing, heater block is to be made of heating rod conduit (10) that has vertical slot and heater strip (11), and heater strip (11) stretches in the heater strip conduit (10).
8. a kind of sodium clean-up system according to claim 6 is characterized in that: sealing bottom described whipping appts is, side-wall hole and the conduit that links to each other with argon gas.
9. a kind of sodium clean-up system according to claim 5, it is characterized in that: be provided with thermopair (18) and Stainless Steel Cloth (19) in the described vapour trap (15), vapour trap (15) bottom is taper, and be provided with sodium steam and enter pipeline (20), top is provided with the argon gas import and export, links to each other with argon system.
10. a kind of sodium clean-up system according to claim 5, it is characterized in that: described settling vessel (2), (4) top are cylindricality, the bottom is tapered, its top is provided with the import and export of sodium, the bottom links to each other with sodium slag discharge tube (26), in establish hygrosensor (24), liquidometer (21), (22) (23) and heater block that length is different.
11. a kind of sodium clean-up system according to claim 10, it is characterized in that: described heater block is length difference, equally distributed heater strip (27), (28), or upper tightly lower sparse, being wound in the heater strip (29) of settling vessel (2), (4) outer wall, settling vessel (2), (4) bottom are provided with radiator element (25).
12. a kind of sodium clean-up system according to claim 5, it is characterized in that: described grade one filter (3) is a silk screen filled-type cold-trap, be barrel-shaped, in establish ring stainless steel silk screen (36), the bottom of ring stainless steel silk screen (36) links to each other with the inwall of one-level strainer (3), its top is interior pipe sealing-in, outer wall is provided with cooling jacket (35), the top is provided with the import and export of sodium, and outlet pipe passes ring stainless steel silk screen (36) bottom, extend into the bottom of grade one filter (3), and with ring stainless steel silk screen (27) top sealing-in.
13. a kind of sodium clean-up system according to claim 5, it is characterized in that: described grade one filter (3) is the cold-trap that is similar to the silk screen filled-type, its bottom and top are respectively equipped with sodium and advance, outlet, in establish, under shunt orifice plate (33), on, shunting orifice plate (33) down links to each other with the inwall of grade one filter (3), the centre is provided with centre bearing post (32), centre bearing post (32) is separately fixed at, under shunt on the orifice plate (33), on, under shunt annular distributing damper arranged in a crossed manner (30) and circular distributing damper (34) between the orifice plate (33), wherein annular distributing damper (30) is fixed on the inwall of grade one filter (3), circular distributing damper (34) is fixed on the centre bearing post (32), places Stainless Steel Cloth (31) between every layer of annular distributing damper (30) and circular distributing damper (34).
14. a kind of sodium clean-up system according to claim 5, it is characterized in that: described two-grade dual strainer (5) is barrel-shaped, its underpart and top are respectively equipped with advancing of sodium, outlet, the centre is provided with 4～7 stainless ceramic strainer tube groups (39), stainless ceramic strainer tube group (39) with basket Stainless Steel Cloth (40) around, the top of stainless ceramic strainer tube group (39) and basket Stainless Steel Cloth (40) links to each other with shunting orifice plate (37), shunting orifice plate (37) links to each other with two-grade dual strainer (5) inwall, stainless ceramic strainer tube (39) passes sealing orifice plate (38), and shunting orifice plate (37) is between sealing orifice plate (38) and sodium outlet.
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| CN100453663C (en) * | 2006-10-26 | 2009-01-21 | 李长阳 | Calcium-removing reactor |
| CN101962781A (en) * | 2010-09-14 | 2011-02-02 | 田秀梅 | Method for removing oxidation film from surface of alkali metal |
| CN101231898B (en) * | 2007-12-11 | 2011-07-20 | 中国原子能科学研究院 | Cold trap for radioactive sodium on-line purification |
| CN102350080A (en) * | 2011-06-30 | 2012-02-15 | 西安交通大学 | Experimental loop purification cold trap of liquid metal sodium |
| CN102582978A (en) * | 2012-03-02 | 2012-07-18 | 西安交通大学 | Equipment for transporting and storing liquid metal sodium |
| CN103757435A (en) * | 2014-02-20 | 2014-04-30 | 贵州省产品质量监督检验院 | Method for purifying metallic sodium |
| CN104036839A (en) * | 2013-03-05 | 2014-09-10 | 中国原子能科学研究院 | Liquid metallic sodium continuous injection method and loop applied to same |
| CN109971978A (en) * | 2019-03-27 | 2019-07-05 | 西安交通大学 | A kind of sodium loop purification system and purification method |
| CN111128418A (en) * | 2020-01-02 | 2020-05-08 | 中国原子能科学研究院 | Method and system for detecting cold trap purification performance |
| CN111192701A (en) * | 2020-01-09 | 2020-05-22 | 中国原子能科学研究院 | Integrated inlet connecting pipe |
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2003
- 2003-09-11 CN CN 03156781 patent/CN1238541C/en not_active Expired - Lifetime
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| CN101231898B (en) * | 2007-12-11 | 2011-07-20 | 中国原子能科学研究院 | Cold trap for radioactive sodium on-line purification |
| CN101962781A (en) * | 2010-09-14 | 2011-02-02 | 田秀梅 | Method for removing oxidation film from surface of alkali metal |
| CN102350080A (en) * | 2011-06-30 | 2012-02-15 | 西安交通大学 | Experimental loop purification cold trap of liquid metal sodium |
| CN102350080B (en) * | 2011-06-30 | 2013-07-31 | 西安交通大学 | Experimental loop purification cold trap of liquid metal sodium |
| CN102582978A (en) * | 2012-03-02 | 2012-07-18 | 西安交通大学 | Equipment for transporting and storing liquid metal sodium |
| CN104036839B (en) * | 2013-03-05 | 2016-12-28 | 中国原子能科学研究院 | Method that liquid metal sodium sprays continuously and loop used |
| CN104036839A (en) * | 2013-03-05 | 2014-09-10 | 中国原子能科学研究院 | Liquid metallic sodium continuous injection method and loop applied to same |
| CN103757435B (en) * | 2014-02-20 | 2016-05-18 | 贵州省产品质量监督检验院 | A kind of method of the sodium of purifying metals |
| CN103757435A (en) * | 2014-02-20 | 2014-04-30 | 贵州省产品质量监督检验院 | Method for purifying metallic sodium |
| CN109971978A (en) * | 2019-03-27 | 2019-07-05 | 西安交通大学 | A kind of sodium loop purification system and purification method |
| CN111128418A (en) * | 2020-01-02 | 2020-05-08 | 中国原子能科学研究院 | Method and system for detecting cold trap purification performance |
| CN111128418B (en) * | 2020-01-02 | 2022-04-08 | 中国原子能科学研究院 | Method and system for detecting cold trap purification performance |
| CN111192701A (en) * | 2020-01-09 | 2020-05-22 | 中国原子能科学研究院 | Integrated inlet connecting pipe |
| CN111192701B (en) * | 2020-01-09 | 2021-11-02 | 中国原子能科学研究院 | Integrated inlet connecting pipe |
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