CN106277061B - One kind fluidisation pillar uranium dioxide gel ball ageing, washing system - Google Patents
One kind fluidisation pillar uranium dioxide gel ball ageing, washing system Download PDFInfo
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- CN106277061B CN106277061B CN201610628781.8A CN201610628781A CN106277061B CN 106277061 B CN106277061 B CN 106277061B CN 201610628781 A CN201610628781 A CN 201610628781A CN 106277061 B CN106277061 B CN 106277061B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G43/00—Compounds of uranium
- C01G43/01—Oxides; Hydroxides
- C01G43/025—Uranium dioxide
Abstract
The present invention relates to washing facility technical field, more particularly to a kind of fluidisation pillar uranium dioxide gel ball ageing, washing system, including dispersion column, distributor and several flyidization columns, the dispersion column disperses a collection of UO every one section of jitter time2The mixed material of gel ball and ammonia mother liquid, the distributor is provided with multiple distribution areas, and the first discharging opening of the dispersion column is connected with the distributor, a collection of mixed material is inserted in a vacant distribution area and carries out UO2The pre- ripening of gel ball, the second discharging opening of the distributor is connected with the flyidization column, when the distribution area completes a collection of UO2After the pre- ripening of gel ball, this batch of mixed material is inserted in a vacant flyidization column and carries out UO2The ripening and carrying out washing treatment of gel ball.The present invention can realize ageing and the continuous feed of two processes of carrying out washing treatment, discharging so that the progress of whole process serialization.
Description
Technical field
The present invention relates to washing facility technical field, more particularly to a kind of fluidisation pillar uranium dioxide gel ball ageing, washing
System.
Background technology
UO2(uranium dioxide) core (diameter~500 μm) is the important component of HTGR spheric fuel element,
UO is prepared at present2The prevailing technology that core is used is sol-gel process.It is different according to gel principle, can be divided into outer gelling,
The full gelatinizing process of interior gelling and the combination of inner and outside.Various gelatinizing process typically all prepare, dispersion agent congeals into ball, old by experience colloidal sol
The step of change, washing, dry, roasting and reduction are sintered, wherein ageing is located at the interstage of whole technique with washing step,
The quality of its technical process is directly connected to the quality of gel ball.
In ageing process, ammoniacal liquor is from gel ball surface to gradually spreading inside it, gel ball and ammoniacal liquor slow reaction, microballoon
Uniform shrinkage is, it is necessary to obtain the gel ball of external and internal compositionses uniformity.In washing process, by deionized water by inside gel ball
Because the ammonium nitrate of reaction generation is removed, it is to avoid it is largely decomposed in follow-up heat treatment process, and causes microballoon to ftracture.Cause
This, is either aged or washing process, and ball liquid all needs abundant contact, homogeneous reaction.And due to its processing be nuclear material,
Used equipment should meet criticality safety requirement.
To reduce the production cost of spheric fuel element, production scale is badly in need of expanding, and the treating capacity of ageing, washing process
It is a big bottleneck of scale, it is necessary to reach that continuous operation could meet production requirement.Disclosed in patent CN202093842U
A kind of UO2Core ageing, washing drying equipment, it is rotatable that its equipment inner cylinder is shaped as flat, is batch operation, it is impossible to continuous
Carry out.Patent CN103366846B discloses a kind of UO of serialization2Core ageing, washing drying system, but its device systems body
Product is huge, and manufacturing cost is high, and particle is in stacking states in ageing and washing process, and the uniformity of ball liquid reaction has to be tested
Card.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is to solve existing UO2 gel balls production equipment to be unable to reach ageing, washing work
The continuous operation of sequence, it is impossible to meet and expand the production-scale production requirement of UO2 gel balls, make the treating capacity of ageing, washing process into
For large-scale production a big bottleneck the problem of.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides one kind fluidisation pillar uranium dioxide gel ball ageing, washing system
System, including dispersion column, distributor and several flyidization columns, the dispersion column disperse a collection of UO every one section of jitter time2It is solidifying
The mixed material of glueballs and ammonia mother liquid, the distributor be provided with multiple distribution areas, the first discharging opening of the dispersion column with
The distributor connection, a collection of mixed material is inserted in a vacant distribution area and carries out UO2Gel ball it is pre- old
Change is handled, and the second discharging opening of the distributor is connected with the flyidization column, when the distribution area completes a collection of UO2Gel ball
After pre- ripening, this batch of mixed material is inserted in a vacant flyidization column and carries out UO2The ripening of gel ball
And carrying out washing treatment.
Wherein, the distributor is shaped as disc, and the center of the distributor is provided with rotating shaft, multiple distribution
Area is uniformly distributed around the rotating shaft, and the distributor rotates around the rotating shaft, the time rotated a circle and UO2Gel ball it is pre-
It is identical the time required to ripening.
Wherein, compressed air piping is connected with the compressed air inlet of the bottom of the flyidization column, with to the flyidization column
Inside it is passed through compressed air.
Wherein, the inside of the flyidization column the compressed air inlet top and on the cross section of the flyidization column
Provided with gas distribution grid, the compressed air being passed through is disperseed, and the gas distribution grid is provided with multiple stomatas, the stomata
Diameter be less than UO2The diameter of gel ball.
Wherein, the compressed air piping is provided with heater, by after compressed air heat temperature raising be passed through it is described
Flyidization column.
Wherein, in addition to ammonia vessel, ammonia vessel washing lotion outlet respectively with the bottom of the flyidization column and described point
The overfall connection at the top of orchestration, will be pre- old in the ammoniacal liquor and the distributor discharged after ripening in the flyidization column
Change the ammoniacal liquor overflowed during processing to collect；The washing lotion outlet of the bottom of the flyidization column is also connected by washing lotion pipeline and wash pools groove
Connect, the deionized water discharged after carrying out washing treatment in the flyidization column is collected.
Wherein, the top of the flyidization column is connected by discharge duct with device for collecting ammonia gas, by the flyidization column
The ammonia produced during ripening is discharged and collected.
Wherein, the top of the flyidization column is provided with deionized water pipeline, during injecting carrying out washing treatment into the flyidization column
The deionized water used.
Wherein, the 3rd discharging opening of the bottom of the flyidization column is connected with drying machine, by washup in the flyidization column
UO after reason2Gel ball, which is expelled on the drying machine, carries out drying process.
(3) beneficial effect
The above-mentioned technical proposal of the present invention has the following advantages that：Present invention fluidisation pillar uranium dioxide gel ball ageing, washing
The dispersion column of system is in a collection of UO for disperseing after certain jitter time2The mixed material of gel ball and ammonia mother liquid,
And a vacant distribution on distributor is discharged to by the first discharging opening, therefore each distribution area on distributor is only equipped with one
Criticize mixed material and carry out UO2The pre- ripening of gel ball, distributes area when one and completes UO2After the pre- ripening of gel ball, by it
This batch of mixed material being equipped with is expelled in a vacant flyidization column by the second discharging opening, therefore each flyidization column is each
UO only is carried out to a collection of mixed material in work2Mixture in the ripening and carrying out washing treatment of gel ball, other distribution areas
Material is also placed into other and is not in the flyidization column of working condition carrying out UO successively2The ripening and carrying out washing treatment of gel ball,
One distribution area of distributor can continue the UO loaded in next group mixed material, flyidization column after discharge mixed material2Gel
The mixed material in a distribution area on distributor can be continued to be fitted into after ball discharge, so as to enable the invention to realize ageing and wash
Wash continuous feed, the discharging of two processes of processing so that the progress of whole process serialization.Flyidization column can enter simultaneously with distributor
Row work, the production flux bottleneck for overcoming batch operation to bring, it is to avoid the stagnation of processing work is waited in production process；Equipment
Compact, floor space is small, and equipment meets the requirement of geometry criticality safety, is adapted to the production in enormous quantities behaviour of nuclear industry pipeline system
Make.
Except it is described above present invention solves the technical problem that, constitute technical scheme technical characteristic and have this
Outside the advantage that the technical characteristic of a little technical schemes is brought, what other technical characteristics of the invention and these technical characteristics were brought
Advantage, will be further illustrated with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation that the embodiment of the present invention fluidizes pillar uranium dioxide gel ball ageing, washing system；
Fig. 2 is the A direction views of distributor in Fig. 1.
In figure：1：Dispersion column；2：Distributor；3：Flyidization column；4：Gas distribution grid；5：Ammonia vessel；6：Device for collecting ammonia gas；
7：Wash pools groove；8：Drying machine；9：Compressed air piping；10：Discharge duct；11：Deionized water pipeline；12：Washing lotion pipeline；
21：Distribute area；22：Rotating shaft.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In addition, in the description of the invention, unless otherwise indicated, " multiple ", " many ", " multigroup " be meant that two or
Two or more, " several ", " some ", " some groups " are meant that one or more.
As depicted in figs. 1 and 2, fluidisation pillar uranium dioxide gel ball ageing, washing system provided in an embodiment of the present invention,
Including dispersion column 1, distributor 2 and several flyidization columns 3, dispersion column 1 disperses a collection of UO every one section of jitter time2Gel ball
With the mixed material of ammonia mother liquid, distributor 2 is provided with multiple distribution areas 21, and the first discharging opening and the distributor 2 of dispersion column 1 connect
Connect, a collection of mixed material is inserted UO is carried out in a vacant distribution area 212The pre- ripening of gel ball, distributor 2
The second discharging opening be connected with flyidization column 3, when distribution area 21 complete a collection of UO2It is mixed by this batch after the pre- ripening of gel ball
Compound material is inserted in a vacant flyidization column 3 and carries out UO2The ripening and carrying out washing treatment of gel ball.
The dispersion column of present invention fluidisation pillar uranium dioxide gel ball ageing, washing system is passing through certain jitter time
Disperse a collection of UO afterwards2The mixed material of gel ball and ammonia mother liquid, and be discharged to by the first discharging opening one on distributor
Individual vacant distribution, therefore each distribution area on distributor only carries out UO equipped with a collection of mixed material2Gel ball is in advance at ageing
Reason, distributes area when one and completes UO2After the pre- ripening of gel ball, this batch of mixed material being equipped with passes through the second discharging
Mouth is expelled in a vacant flyidization column, therefore each flyidization column only carries out UO in every task to a collection of mixed material2
Mixed material in the ripening and carrying out washing treatment of gel ball, other distribution areas is also placed into other and is not in work shape successively
UO is carried out in the flyidization column of state2The ripening and carrying out washing treatment of gel ball, a distribution area of distributor is in discharge mixture
The UO loaded in next group mixed material, flyidization column can be continued after material2It can continue to load on distributor one after gel ball discharge
The mixed material distributed in area, so that enable the invention to realize ageing and the continuous feed of two processes of carrying out washing treatment, discharging,
So that the progress of whole process serialization.Flyidization column can be operated simultaneously with distributor, the production for overcoming batch operation to bring
Flux bottleneck, it is to avoid the stagnation of processing work is waited in production process；Facility compact, floor space are small, and equipment is met
The requirement of geometry criticality safety, is adapted to the production in enormous quantities operation of nuclear industry pipeline system.
Wherein, as shown in Fig. 2 distributor 2 is shaped as disc, and the center of distributor 2 is provided with rotating shaft 22, Duo Gefen
It is uniformly distributed with area 21 around rotating shaft 22,22 rotation around the shaft of distributor 2, the time rotated a circle and UO2Gel ball it is pre- old
It is identical the time required to changing processing.Distributor is geometry criticality safety shape, is divided into multiple distribution areas, distribution area's number with it is pre- old
The hourage for changing processing time is corresponding, and as each region is built with the scattered gel ball obtained for one hour of dispersion column；Distribution
The rotating shaft at Qi Keraoqi centers slowly rotates, and the time rotated a circle is consistent with pre- ripening required time；Each distribution area
Bottom can with flyidization column is convenient dock, mixed material therein all can be transferred into flyidization column.
Further, compressed air piping 9 is connected with the compressed air inlet of the bottom of flyidization column 3, with into flyidization column 3
It is passed through compressed air.Compressed air is passed through into flyidization column, in ripening, UO can be made2Gel ball keeps living in ammoniacal liquor
Dynamic state carries out fluidization processing, in carrying out washing treatment, can make UO2Gel ball keeps active state to be flowed in deionized water
Stateization processing, can be prevented effectively from UO2Gel ball is accumulated, it is ensured that UO2Gel ball is uniformly contacted with surrounding liquid, under fluidized state
It can ensure that the reaction of ball liquid is more abundant.
Wherein, the inside of flyidization column 3 compressed air inlet top and on the cross section of flyidization column 3 provided with gas point
Fabric swatch 4, the compressed air being passed through is disperseed, and gas distribution grid 4 is provided with multiple stomatas, and the diameter of stomata is less than gel ball
Diameter.Gas distribution grid is used to be uniformly distributed the compressed air that is passed through flyidization column, passes through its stomata shape and gas cell distribution
Design, is adjusted to the pressure and flow of compressed air, can make UO2Gel ball forms fluidization in flyidization column, microballoon it
Between without violent collision so as to UO2Gel ball carries out fluidization processing, shortens the ball liquid reaction time, and then shortens UO2Gel
Ball Chen Hua processing and the time of carrying out washing treatment, improve production efficiency.Gas distribution grid not only has good sealing to connect with flyidization column
Connect, and easily can be extracted out from flyidization column, because the aperture of gas distribution grid is less than the diameter of gel ball, UO2Gel ball
Gas distribution grid top carry out ball liquid reaction, when ripening complete discharge ammoniacal liquor when and carrying out washing treatment complete discharge from
During sub- water, UO2Gel ball can be intercepted at the top of gas distribution grid, it is ensured that not miss UO while emptying liquid2Gel
Ball, discharge needs UO after the completion of carrying out washing treatment2During gel ball, gas distribution grid can be extracted out, by UO2Gel ball is released.
Specifically, compressed air piping 9 is provided with heater, flyidization column will be passed through after compressed air heat temperature raising
3.Heater is to heating the compressed air being passed into flyidization column in compressed air piping, while can ensure that compression is empty
The temperature of gas, to adjustable between 80 DEG C, is to UO in flyidization column in room temperature2The ripening and carrying out washing treatment of gel ball are provided
Suitable ball liquid reaction temperature.
Further, the fluidisation pillar uranium dioxide gel ball ageing, washing system of the present embodiment also includes ammonia vessel 5, ammonia
Overfall of the tank 5 respectively with the outlet of the washing lotion of the bottom of flyidization column 3 and the top of distributor 2 is connected, will be old in flyidization column 3
The ammoniacal liquor overflowed in the ammoniacal liquor and distributor 2 discharged after change processing during pre- ripening is collected；The washing lotion of the bottom of flyidization column 3 goes out
Mouth is also connected by washing lotion pipeline 12 with wash pools groove 7, and the deionized water discharged after carrying out washing treatment in flyidization column 3 is received
Collection.Be equipped with overfall at the top of each distribution area on distributor, in the mixed material in distribution area unnecessary ammoniacal liquor by
Overfall is flowed out in ammonia vessel, after the completion of ripening, and the ammoniacal liquor in flyidization column in mixed material is exported by washing lotion to flow
Go out into peace tank, ammonia vessel storage ammoniacal liquor prevents it from volatilizing, environmental protection is recycled and economized on resources.It is complete in carrying out washing treatment
Cheng Hou, deionized water also can flow out to wash pools groove by washing lotion outlet and be recycled.
Specifically, the top of flyidization column 3 is connected by discharge duct 10 with device for collecting ammonia gas 6, will be old in flyidization column 3
Change the ammonia produced during processing to discharge and collect.Wherein, the top of flyidization column 3 is provided with deionized water pipeline 11, with to flyidization column
The deionized water used in 33 during injection carrying out washing treatment.Wherein, the 3rd discharging opening of the bottom of flyidization column 3 is connected with drying machine 8,
With by the UO after carrying out washing treatment in flyidization column 32Gel ball, which is expelled on drying machine 8, carries out drying process.During ripening,
Ammoniacal liquor in mixed material easily produces ammonia, therefore sets discharge duct to be connected with device for collecting ammonia gas at the top of flyidization column,
Ammonia is discharged and collected, prevents ammonia from polluting environment；Deionization pipeline is required when carrying out washing treatment is passed through into flyidization column to be gone
Ionized water；Complete after carrying out washing treatment, UO2Gel ball can be expelled directly out entering drying by fluidizing the 3rd discharging opening of column bottom
Machine, carries out the drying process of subsequent processing.Flyidization column is designed for geometry criticality safety, and its specific number is had by processing operation time
Body is determined.
In use, the scattered obtained UO in front end2Gel ball is dispersed through column bottom discharging opening together with ammonia mother liquid and together entered
Into one of distributor distribution area, the overfall of unnecessary ammoniacal liquor at the top of the distribution area is flowed into ammonia vessel, and distributor delays
Slow rotation, after 1 hour, UO2Gel ball enters together with ammonia mother liquid in next distribution area of distributor, and such gel ball is together with ammonia
Jellyfish liquid is continuously entered in each distribution area of distributor, proceeds by pre- ripening.
After the pre- ageing of gel ball in first region of distributor terminates, entered by the first discharging opening of dispenser bottom
Enter into first flyidization column, the bottom of flyidization column is passed through the compressed air with temperature, after gas distribution grid, makes UO2
Gel ball fluidizes in flyidization column, the ripening heated up.Therebetween, the ammonia of generation is via the top of flyidization column
Discharge duct enters ammonia recycling device.After ripening terminates, washing lotion outlet of the ageing liquid through the bottom of flyidization column 2 is drained into ammonia
In tank, deionized water pipeline of the deionized water at the top of flyidization column is entered in flyidization column, the pressure that flyidization column is set by bottom
Contracting air duct is passed through the compressed air with temperature, UO2Gel ball proceeds by washing process.After washing terminates, washing lotion warp
The washing lotion outlet of fluidisation column bottom is drained into wash pools device, and washing need to be carried out repeatedly.After washing terminates, gas can be distributed
Plate is extracted out, UO2Gel ball enters next drying process by the discharging opening for fluidizing column bottom.
Gel ball in second distribution area of distributor is entered in second flyidization column after ageing terminates in advance, with such
Push away, because the pre- ageing process time is more than the ageing, washing process time, so the quantity of flyidization column can be distributed less than on distributor
The quantity in area.First distribution area of distributor can continue to load UO after rotating a circle2Gel ball and ammonia mother liquid, first stream
Change the UO in post2The mixed material in a distribution area on distributor can be continued to be fitted into after gel ball discharge, so that whole old
Change washing procedure and realize continuous feed, discharging so that the progress of whole process serialization.
In summary, the dispersion column of present invention fluidisation pillar uranium dioxide gel ball ageing, washing system is being passed through necessarily
Disperse a collection of UO after jitter time2The mixed material of gel ball and ammonia mother liquid, and be discharged to point by the first discharging opening
A vacant distribution on orchestration, therefore each distribution area on distributor only carries out UO equipped with a collection of mixed material2Gel ball
Pre- ripening, distributes area when one and completes UO2After the pre- ripening of gel ball, this batch of mixed material being equipped with passes through
Second discharging opening is expelled in a vacant flyidization column, thus each flyidization column in every task only to a collection of mixed material
Carry out UO2Mixed material in the ripening and carrying out washing treatment of gel ball, other distribution areas is also placed into other and not located successively
UO is carried out in the flyidization column of working condition2The ripening and carrying out washing treatment of gel ball, a distribution Qu Pai of distributor
Go out after mixed material to continue the UO loaded in next group mixed material, flyidization column2It can continue to load distribution after gel ball discharge
On device one distribution area in mixed material so that enable the invention to realize ageing and two processes of carrying out washing treatment continuously enter
Material, discharging so that the progress of whole process serialization.Flyidization column can be operated simultaneously with distributor, overcome batch operation band
The production flux bottleneck come, it is to avoid the stagnation of processing work is waited in production process；Facility compact, floor space are small, and
Equipment meets the requirement of geometry criticality safety, is adapted to the production in enormous quantities operation of nuclear industry pipeline system.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. one kind fluidisation pillar uranium dioxide gel ball ageing, washing system, it is characterised in that：If including dispersion column, distributor and
Dry flyidization column, the dispersion column disperses a collection of UO every one section of jitter time2The mixed material of gel ball and ammonia mother liquid,
The distributor is provided with multiple distribution areas, and the first discharging opening of the dispersion column is connected with the distributor, will be a collection of mixed
Compound material inserts progress UO in a vacant distribution area2The pre- ripening of gel ball, the second of the distributor goes out
Material mouth is connected with the flyidization column, when the distribution area completes a collection of UO2After the pre- ripening of gel ball, by this batch of mixture
Material, which is inserted in a vacant flyidization column, carries out UO2The ripening and carrying out washing treatment of gel ball.
2. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 1, it is characterised in that：Described point
Orchestration is shaped as disc, and the center of the distributor is provided with rotating shaft, and multiple distribution areas are uniform around the rotating shaft
Distribution, the distributor rotates around the rotating shaft, the time rotated a circle and UO2Phase the time required to the pre- ripening of gel ball
Together.
3. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 1, it is characterised in that：Compression is empty
Feed channel is connected with the compressed air inlet of the bottom of the flyidization column, to be passed through compressed air into the flyidization column.
4. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 3, it is characterised in that：The stream
Change post inside the compressed air inlet top and on the cross section of the flyidization column be provided with gas distribution grid, will
The compressed air being passed through is disperseed, and the gas distribution grid is provided with multiple stomatas, and the diameter of the stomata is less than UO2Gel ball
Diameter.
5. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 3, it is characterised in that：The pressure
Contracting air duct is provided with heater, will be passed through the flyidization column after compressed air heat temperature raising.
6. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 1, it is characterised in that：Also include
Ammonia vessel, the overfall company of the ammonia vessel respectively with the outlet of the washing lotion of the bottom of the flyidization column and the top of the distributor
Connect, the ammoniacal liquor overflowed in the ammoniacal liquor and the distributor discharged after ripening in the flyidization column during pre- ripening is received
Collection；The washing lotion outlet of the bottom of the flyidization column is also connected by washing lotion pipeline with wash pools groove, by the flyidization column
The deionized water discharged after carrying out washing treatment is collected.
7. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 1, it is characterised in that：The stream
The top for changing post is connected by discharge duct with device for collecting ammonia gas, the ammonia that will be produced in the flyidization column during ripening
Discharge and collect.
8. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 1, it is characterised in that：The stream
The top for changing post is provided with deionized water pipeline, with the deionized water used when injecting carrying out washing treatment into the flyidization column.
9. fluidisation pillar uranium dioxide gel ball ageing, washing system according to claim 1, it is characterised in that：The stream
The 3rd discharging opening for changing the bottom of post is connected with drying machine, by the UO after carrying out washing treatment in the flyidization column2Gel ball is discharged
Drying process is carried out on to the drying machine.
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