CN115945230A - Online cleaning device and online cleaning method for ion exchange column - Google Patents
Online cleaning device and online cleaning method for ion exchange column Download PDFInfo
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- CN115945230A CN115945230A CN202310059623.5A CN202310059623A CN115945230A CN 115945230 A CN115945230 A CN 115945230A CN 202310059623 A CN202310059623 A CN 202310059623A CN 115945230 A CN115945230 A CN 115945230A
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- 238000005342 ion exchange Methods 0.000 title claims abstract description 132
- 238000004140 cleaning Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 131
- 229920005989 resin Polymers 0.000 claims abstract description 131
- 239000000463 material Substances 0.000 claims abstract description 64
- 239000002245 particle Substances 0.000 claims abstract description 58
- 230000009471 action Effects 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007863 gel particle Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- 238000012546 transfer Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 6
- 239000011152 fibreglass Substances 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 7
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- 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
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses an online cleaning device and an online cleaning method for an ion exchange column, and belongs to the technical field of application of the ion exchange column. The online cleaning device comprises an ion exchange column, a negative pressure material lifting tank, a vacuum negative pressure pump and air compression equipment, wherein a material lifting pipe penetrating through the inner side and the outer side of the ion exchange column is arranged on the upper portion of the ion exchange column, the outer side end of the material lifting pipe is communicated with the lower portion of the negative pressure material lifting tank through a guide pipe, the upper portion of the negative pressure material lifting tank is communicated with the vacuum negative pressure pump and the air compression equipment, negative pressure and positive pressure inside the negative pressure material lifting tank are alternately formed, suction and discharge actions of resin in the ion exchange column are conveniently formed, stirring of resin particles in the ion exchange column is achieved, and effective washing of the surfaces of the stirred resin particles is further achieved. The invention realizes the suction and discharge actions of the resin in the ion exchange column by using a vacuum drainage negative pressure material lifting method, simply and conveniently realizes the stirring of the resin, provides favorable conditions for the online washing of resin particles, can also achieve the optimized degumming of the resin particles and improves the online cleaning effect.
Description
Technical Field
The invention relates to the technical field of application of ion exchange columns, in particular to an online cleaning device and an online cleaning method for an ion exchange column.
Background
The preparation of silica sol usually uses sodium silicate as raw material, and utilizes ion exchange technology to remove sodium ion after dissolution and dilution to obtain silicic acid and its polymer, and then uses hydrothermal synthesis method to make particle stabilization. During the ion exchange process, the silicic acid is unstable due to the change of pH, gel is formed and coated on the surfaces of the ion exchange resin particles, and the exchange effect is influenced, so that the resin needs to be washed by water immediately after the exchange. The gel particles are very fine, and if the water washing is insufficient and thorough, the gel particles are mixed into silicic acid in the next exchange process, so that the quality of the silica sol is influenced.
In order to solve the above problems, many manufacturers add a stirring device when designing an ion exchange column, so as to separate and remove the generated gel from the exchange resin particles by water washing. Although this design can ameliorate the effects of the gelling problem, the device is not well enclosed and is an open cylinder. The open type column causes the overflow of the regenerated acid gas, pollutes the working environment, and easily causes impurities in the air to enter the column to pollute materials. And the stirring device is inconvenient to maintain, oil stains and the like easily pollute materials, the maintenance workload is large, and resin washing and transferring are also inconvenient. If a centrifugal pump is used for pumping, resin particles are easy to grind, and the problem that the production requirement cannot be met is also solved.
Therefore, the inconvenience and disadvantages of the above-mentioned conventional ion exchange column for cleaning the resin particles still remain, and further improvement is desired. How to create a new on-line cleaning device and on-line cleaning method for ion exchange columns, which can simply and conveniently meet the requirements of resin transfer, resin cleaning and glue removal of resin particles, and achieve the technical effects of avoiding resin particle breakage, easily removing glue and thoroughly cleaning, and becomes the object of urgent need for improvement in the current industry.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an on-line cleaning device for an ion exchange column, which can simply and conveniently meet the requirements of resin transfer, resin particle cleaning and resin particle degumming, and achieve the technical effects of avoiding resin particle crushing, easily removing the degumming and thoroughly cleaning, thereby overcoming the defects of the existing ion exchange column in resin particle cleaning.
In order to solve the technical problems, the invention provides an online cleaning device for an ion exchange column, wherein the upper part and the lower part of the ion exchange column are respectively provided with a medium inlet and a medium outlet, a flower plate is arranged on the lower side in the ion exchange column, resin is filled above the flower plate, the online cleaning device further comprises a negative pressure lifting tank, a vacuum negative pressure pump and an air compression device which are connected with the negative pressure lifting tank, a lifting pipe penetrating through the inner side and the outer side of the ion exchange column is arranged on the upper part of the ion exchange column, the inner side end of the lifting pipe extends to the vicinity of the upper part of the flower plate, the outer side end of the lifting pipe is communicated with the lower part of the negative pressure lifting tank through a guide pipe, the upper part of the negative pressure lifting tank is communicated with the vacuum negative pressure pump and is used for forming negative pressure in the negative pressure lifting tank and facilitating vacuum drainage of resin in the ion exchange column, the upper part of the negative pressure lifting tank is also communicated with the air compression device and is used for forming positive pressure in the negative pressure in the lifting tank and is used for repressurizing resin in the ion exchange column so as to achieve stirring of resin particles in the ion exchange column, and the online cleaning of the stirring particles.
The negative pressure material lifting tank is further improved by adopting a tank body made of glass fiber reinforced plastics, a reinforcing ring fixedly connected with the tank body is arranged on the outer side of the tank body, and a breathing through pipe orifice is arranged on the upper part of the ion exchange column.
The improved negative pressure material lifting tank is characterized in that a flushing water inlet, a pressure gauge and an observation window are further arranged on the upper portion of the negative pressure material lifting tank, and an upper liquid level gauge and a lower liquid level gauge are respectively arranged on the upper side and the lower side of the interior of the negative pressure material lifting tank.
The improved negative pressure material extracting device is characterized by further comprising a hydrocyclone separator, wherein a tangent inlet of the hydrocyclone separator is communicated with a guide pipe at the lower part of the negative pressure material extracting tank, a lower outlet of the hydrocyclone separator is communicated with the upper part of the ion exchange column, an upper overflow port of the hydrocyclone separator is used for discharging fine gel particles and broken resin particles in the resin particles, and regulating valves are arranged on pipelines connected with the tangent inlet, the lower outlet and the upper overflow port of the hydrocyclone separator.
The improved negative pressure material extracting tank is characterized in that a resin transfer pipe is further connected to a guide pipe on the lower portion of the negative pressure material extracting tank, and the resin transfer pipe and the guide pipe are close to the side of the material extracting pipe and are provided with regulating valves.
In a further improvement, the regulating valve adopts a solenoid valve or a manual regulating valve.
The vacuum negative pressure pump is formed by a vacuum negative pressure pump station consisting of one or two water ring vacuum pumps.
As a further improvement, the present invention further provides an on-line cleaning method for an ion exchange column, which is implemented by using the on-line cleaning apparatus for an ion exchange column described above, and comprises three cleaning modes:
the first mode is a material lifting gel breaking mode: the negative pressure lifting tank enables the interior of the negative pressure lifting tank to form negative pressure under the action of the vacuum negative pressure pump, and resin in the ion exchange column is sucked into the negative pressure lifting tank in a vacuum drainage negative pressure lifting mode; then under the action of the air compression equipment, positive pressure is formed inside the negative pressure material lifting tank, resin inside the negative pressure material lifting tank is spitted into the ion exchange column again, stirring of resin particles in the ion exchange column is formed, one cycle is completed by sucking and spitting, and after set times are reached, automatic washing is completed through a medium inlet and a medium outlet of the ion exchange column;
the second is a material-lifting rotational flow degumming mode: the negative pressure lifting tank enables the interior of the negative pressure lifting tank to form negative pressure under the action of the vacuum negative pressure pump, and resin in the ion exchange column is sucked into the negative pressure lifting tank in a vacuum drainage negative pressure lifting mode; then under the action of the air compression equipment, positive pressure is formed inside the negative pressure material lifting tank, and resin inside the negative pressure material lifting tank is spitted into the ion exchange column again through the hydrocyclone separator, so that the resin particles in the ion exchange column are stirred, the removal of fine gel particles and broken resin particles on the surfaces of the resin particles is realized, one cycle is completed by sucking and spitting, and after the set times are reached, automatic washing is completed through a medium inlet and a medium outlet of the ion exchange column;
the third is resin roll-out mode: the negative pressure lifting tank enables the interior of the negative pressure lifting tank to form negative pressure under the action of the vacuum negative pressure pump, and resin in the ion exchange column is sucked into the negative pressure lifting tank in a vacuum drainage negative pressure lifting mode; then under the effect of air compression equipment, positive pressure is formed inside the negative pressure material lifting tank, and resin inside the negative pressure material lifting tank is rotated out through the resin rotating-out pipe, so that the resin in the ion exchange column is rotated out until all the resin in the ion exchange column is rotated out.
As another improvement, the invention also provides an online cleaning method of the ion exchange column, which adopts a vacuum drainage negative pressure material-lifting method to suck and discharge the resin in the ion exchange column to stir the resin particles in the ion exchange column, and then realizes online washing of the resin particles in stirring.
In the further improvement, the separation of the fine gel ions and the broken resin particles in the resin particles is realized by a hydrocyclone during the process that the resin is recycled to the ion exchange column.
After adopting such design, the invention has at least the following advantages:
1. the online cleaning device for the ion exchange column forms the negative pressure state and the positive pressure state of the negative pressure lifting tank by arranging the negative pressure lifting tank and utilizing the vacuum negative pressure pump and the air compression equipment, realizes the suction and discharge actions of the resin in the ion exchange column by a vacuum drainage negative pressure lifting method, simply and conveniently realizes the stirring of resin particles in the exchange column, can avoid the crushing of the resin particles as much as possible, provides favorable conditions for the online washing of the resin particles, overcomes the problems of large maintenance workload, difficult maintenance and easy pollution caused by the maintenance due to the arrangement of stirring equipment in the conventional exchange column, has excellent cleaning effect, belongs to a closed type ion exchange column, and can prevent pollution and pollution.
2. Still through setting up hydrocyclone, can inhale in-process of telling at the resin and realize getting rid of the fine gel particle and broken resin granule on resin particle surface, reach the optimization of removing glue to the resin, further promote online cleaning effect.
3. And the resin transfer pipe is arranged, so that the resin can be transferred without damage by using a vacuum negative pressure material lifting method, and the method is simple, convenient, safe and reliable.
4. And the internal pressure of the ion exchange column is not changed along with the positive pressure and the negative pressure in the negative pressure lifting tank by arranging the mouth of the breathing through pipe, so that the consistency of the internal pressure and the external pressure of the ion exchange column is kept, and the use safety of the ion exchange column is ensured.
5. The online cleaning method utilizes a vacuum drainage negative pressure material lifting method to suck and spit resin in the ion exchange column to form stirring of the resin in the ion exchange column, and separation of fine gel ions and broken resin particles in the resin is realized through the hydrocyclone in the process of spitting the resin back to the ion exchange column, so that the cleaning effect is remarkable, the automation degree is high, the labor input and the production operation difficulty are greatly saved, the safety is high, and the water-saving effect is obvious.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
FIG. 1 is a schematic view showing the structure of an on-line cleaning apparatus for an ion exchange column according to the present invention.
FIG. 2 is a schematic structural diagram of a negative pressure lift tank in the on-line cleaning device of the ion exchange column of the present invention.
FIG. 3 is a schematic view showing the structure of a hydrocyclone in the on-line cleaning apparatus for an ion exchange column of the present invention.
In the figure, 1. Ion exchange column; 10. a support structure; 11. a material lifting pipe; 12. a pattern plate; 13. a media inlet; 14. a media outlet; 15. a water cap; 16. side manholes and sight glasses; 17. a breathing through-tube orifice; 2. negative pressure material lifting tank; 21. a reinforcing ring; 22. an observation window; 23. a pressure gauge; 24. an upper level gauge; 25. a lower level gauge; 26. a tap water flushing inlet; 3. a vacuum negative pressure pump station; 4. an air compression device; 5. a hydrocyclone separator; 51. a tangent inlet; 52. a lower outlet; 53. an upper overflow port; 6. a conduit; 7. a resin transfer pipe; 8. a conduit.
Detailed Description
Referring to fig. 1, the on-line cleaning apparatus for an ion exchange column of the present embodiment includes an ion exchange column 1, and a medium inlet 13 and a medium outlet 14 are respectively formed at an upper portion and a lower portion of the ion exchange column 1. The inside downside of ion exchange column 1 is equipped with card 12, be equipped with water cap 15 on the card, the card top is used for filling resin.
The embodiment also comprises a negative pressure lifting tank 2, and a vacuum negative pressure pump 3 and an air compression device 4 which are connected with the negative pressure lifting tank. The upper part of the ion exchange column 1 is provided with a material lifting pipe 11 penetrating through the inner side and the outer side of the ion exchange column 1, the inner side end of the material lifting pipe 11 extends to the vicinity of the upper part of the flower plate 12, and the outer side end of the material lifting pipe 11 is communicated with the lower part of the negative pressure material lifting tank 2 through a guide pipe 6. The upper portion of negative pressure lifting bucket 2 be equipped with the first through-hole of 3 intercommunications of vacuum negative pressure pump is used for forming the negative pressure of negative pressure lifting bucket 2 inside is convenient for the vacuum drainage resin in the ion exchange column 1, the upper portion of negative pressure lifting bucket 2 still be equipped with the second through-hole of 4 intercommunications of air compression equipment is used for forming the malleation of negative pressure lifting bucket 2 inside is convenient for impress its inside resin again in the ion exchange column 1, it is right to reach the stirring of resin granule in the ion exchange column 1. Of course, the first through hole and the second through hole can also realize the communication between the negative pressure lifting tank 2 and the vacuum negative pressure pump 3 or the air compression equipment 4 through the on-off matching of a three-way pipe and a valve. The medium inlet 13 and the medium outlet 14 of the ion exchange column 1 are used for realizing the on-line flushing of the stirred resin particles in the ion exchange column 1.
Specifically, in this embodiment, the ion exchange column 1 is a closed glass fiber reinforced plastic exchange column, the upper and lower parts are respectively provided with a head with a manhole, the upper part of the sidewall of the column is provided with a side manhole and a sight glass 16, and the ion exchange column 1 is supported by a support structure 10. The flower plate 12 is provided with water caps 15 in regular triangle arrangement, and the specification of the water caps is one inch. The flower plate 12 is fixed on the inner wall of the exchange column by an upper flange ring and a lower flange ring. The middle straight cylinder of the exchange column has the diameter of 1600mm and the height of 2000mm. The material lifting pipe 11 is a PVC pipe of DN80-DN100, the inner side end of the material lifting pipe is positioned 100mm above the water cap 15, and the outer side end of the material lifting pipe is fixedly connected with the guide pipe 6 through a flange.
And, the upper portion of the said ion exchange column 1 also has breathing and leads to the mouth 17, is used for keeping the internal and external pressure consistency of the ion exchange column 1, make the internal pressure of the ion exchange column 1 not change with the positive, negative pressure in the negative pressure bucket 2, have guaranteed the safe in utilization of the ion exchange column 1 like this.
Referring to fig. 2, the negative pressure bucket 2 of the present embodiment is a glass fiber reinforced plastic tank having a volume of about 0.176m 3 Because the pressure fluctuation range is from negative pressure of-0.098 MPa to positive pressure of 0.2MPa, two reinforcing rings 21 fixedly connected with the tank body are arranged on the outer side of the tank body, and the service life of the tank body is prolonged.
The upper part of the negative pressure lifting tank 2 is also provided with a flushing water inlet 26, a pressure gauge 23 and an observation window 22, and the upper side and the lower side in the negative pressure lifting tank 2 are respectively provided with an upper liquid level meter 24 and a lower liquid level meter 25 for controlling the lifting amount and the lifting times of resin.
In this embodiment, the vacuum negative pressure pump 3 is composed of a vacuum negative pressure pump station composed of one or two water ring vacuum pumps, and includes a vacuum tank for serving as a vacuum storage device. The vacuum negative pressure pump station, such as the HJZF series vacuum pump station, is used in the occasion of frequently using the vacuum source and needing not too large air extraction amount, can greatly save energy and prolong the service life of the vacuum pump. The process requirements of the vacuum negative pressure pump are as follows: the vacuum degree is 0 to-0.09 Mpa, and the volume of the vacuum tank is 0.5m 3 The model of the vacuum pump station is ZF-0.5A, the number of the water ring vacuum pumps is 2BV2061 multiplied by 2, the power is 1.5kW multiplied by 2, the fluctuation range of the vacuum degree is 0-minus 0.09Mpa, and the caliber of the interface is 50mm. The air compression equipment 4 adopts the existing commercially available equipment, and can reach the internal positive pressure of the negative pressure material lifting tank.
In this embodiment, the vacuum negative pressure pump station provides negative pressure of-0.09 Mpa, and the theoretical water column supported by the negative pressure pump station is 9m, so the installation height of the negative pressure lifting tank 2 must be setAnd (4) limiting. In actual installation, the plane of the lower pattern plate 12 of the exchange column is taken as a zero point H 0 Taking the top flange opening of the negative pressure lifting bucket 2 as the maximum height H MAX . During installation time (H) 0 -H MAX In between) should reasonably control the height and shorten the pipeline path as much as possible according to the field conditions, and reduce the number of elbows. During the cleaning and transferring process, the resin and water are in a mixed suspension state, and the density of the resin particles is very similar to that of the water. The system calculates the loss H of the pressure head according to the water system Decrease in the thickness of the steel (10 m long pipeline is estimated according to 1m head loss, and one elbow is estimated according to 0.5m loss.) to finally meet the judgment condition of whether the pipeline absorbs the water: h MAX +H Decrease in the thickness of the steel ≤9m。
In a further improvement, referring to fig. 3, the online cleaning apparatus for an ion exchange column in this embodiment further includes a hydrocyclone 5, a tangential inlet 51 of the hydrocyclone 5 is communicated with a conduit 6 at a lower portion of the negative pressure lift tank 2 through a conduit 8, a lower outlet 52 of the hydrocyclone 5 is communicated with an upper portion of the ion exchange column 1, an upper overflow port 53 of the hydrocyclone 5 is used for discharging fine gel particles and broken resin particles in the resin, and pipelines connected with the tangential inlet 51, the lower outlet 52 and the upper overflow port 53 of the hydrocyclone 5 are respectively provided with an adjusting valve for controlling on-off of the hydrocyclone 5.
Specifically, in the structure of the hydrocyclone 5 in this embodiment, the upper portion is a cylindrical portion, the lower portion is a conical portion, the feed liquid enters from the tangential inlet 51 of the cylindrical portion in the tangential direction, the feed liquid rotates to generate centrifugal force, and the conical portion which moves downward to the lower portion rotates more vigorously. Thus, the fine gel particles or the liquid with higher density in the feed liquid are thrown to the wall of the device under the action of centrifugal force, and flow downwards along the wall of the device to the lower outlet 52 along a spiral line to enter the ion exchange column 1; while the fine gel particles and the crushed resin particles carried in the clear liquid or liquid rise and overflow from the upper overflow port 53 at the center, thereby completing the removal of the fine gel particles and the crushed resin particles on the surface of the resin particles. The hydrocyclone has simple structure, small volume, high production efficiency, and wide range of gel particles, such as 150mm diameter hydrocycloneThe separator has a treatment capacity of 10-15m under a working pressure of 0.2MPa 3 And/h, under normal working conditions, can remove 50 percent of gel particles with the size of about 40 mu m and 95 percent of gel particles with the size of about 15 mu m, and can simultaneously remove fine light gel particles with the size of less than about 12 mu m.
In addition, in this embodiment, a resin transfer pipe 7 is further connected to the conduit 6 at the lower portion of the negative pressure lifting tank 2, and the resin transfer pipe 7 and the conduit 6 are close to the side of the lifting pipe 11 and are provided with adjusting valves, so as to realize the shunting control of the resin transfer or transfer.
In this embodiment, the regulating valves can all adopt electromagnetic valves, thereby improving automatic control. Of course, the regulating valve can also adopt a manual regulating valve to realize manual control.
As the ion exchange column 1 can be contacted with acid-base media, the tank body, the pipeline, the manual valve, the electromagnetic valve and the liquid level meter in the device all adopt corrosion-resistant materials, such as glass fiber reinforced plastics and PVC pipes. Wherein, the hydrocyclone separator is made of 316L stainless steel plate because of difficult processing and easy abrasion.
The online cleaning method of the ion exchange column comprises three cleaning modes:
the first mode is a material lifting gel breaking mode:
namely, the negative pressure lifting tank 2 forms negative pressure inside under the action of the vacuum negative pressure pump 3, and resin inside the ion exchange column 1 is sucked into the negative pressure lifting tank 2 in a vacuum drainage negative pressure lifting mode; then, under the action of the air compression device 4, positive pressure is formed inside the negative pressure lifting tank 2, the resin inside the negative pressure lifting tank is spitted into the ion exchange column 1 again, so that the resin particles in the ion exchange column 1 are stirred, one cycle of sucking and spitting completion is taken as one time, the cycle time is controlled by the upper liquid level meter 24 and the lower liquid level meter 25, and after the set times are reached, the resin particles are automatically washed on line through the medium inlet 13 and the medium outlet 14 of the ion exchange column 1.
The second is a material-lifting rotational flow degumming mode: the negative pressure material lifting tank 2 forms negative pressure inside the negative pressure material lifting tank under the action of the vacuum negative pressure pump 3, and resin inside the ion exchange column 1 is sucked into the negative pressure material lifting tank 2 in a vacuum drainage negative pressure material lifting mode; then, under the action of the air compression device 4, positive pressure is formed inside the negative pressure lifting tank 2, the resin inside the negative pressure lifting tank is spitted into the ion exchange column 1 again through the hydrocyclone 5, so that the resin particles in the ion exchange column 1 are stirred, the removal of fine gel particles and broken resin particles on the surfaces of the resin particles is realized, one cycle is completed by sucking and spitting, the cycle time is controlled by the upper liquid level meter 24 and the lower liquid level meter 25, and after the set times are reached, the automatic washing is completed through the medium inlet 13 and the medium outlet 14 of the ion exchange column 1.
The third is resin roll-out mode: the negative pressure material lifting tank 2 forms negative pressure in the negative pressure material lifting tank under the action of the vacuum negative pressure pump 3, and resin in the ion exchange column 1 is sucked into the negative pressure material lifting tank 1 in a vacuum drainage negative pressure material lifting mode; then, under the action of the air compression device 4, positive pressure is formed inside the negative pressure lifting tank 2, and the resin inside the negative pressure lifting tank is discharged through the resin discharge pipe 7, so that the resin in the ion exchange column 1 is discharged until all the resin in the ion exchange column 1 is discharged.
The online cleaning method of the ion exchange column can switch different cleaning modes according to different requirements to achieve different cleaning purposes, and is simple and convenient in the whole device, safe and reliable in method and good in cleaning effect.
The online cleaning method of the ion exchange column can realize the suction and discharge actions of the resin in the ion exchange column by utilizing the vacuum drainage negative pressure material extraction method, simply and conveniently realizes the stirring of the resin particles in the ion exchange column, provides favorable conditions for the online washing of the resin particles, and ensures the use safety of the ion exchange column. Still through inhaling the setting of telling in-process hydrocyclone separator, can realize getting rid of the fine gel particle on resin particle surface and broken resin granule, reach the optimization of removing glue to resin particle, further promote online cleaning effect, overcome and set up agitated vessel in the current exchange column and lead to that resin particle is broken, maintenance work load is big, the maintenance is difficult, the maintenance easily brings the problem of pollution. The online cleaning method has the advantages of excellent cleaning effect and high automation degree, greatly saves the labor input and the production operation difficulty, and can prevent pollution and pollution by using the closed ion exchange column.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides an online cleaning device of ion exchange column, the upper portion and the lower part of ion exchange column are equipped with medium entry and medium export respectively, the inside downside of ion exchange column is equipped with the card, the card top is used for packing resin, its characterized in that still includes negative pressure lifting bucket and the vacuum negative pressure pump and the air compression equipment of being connected with it, the upper portion of ion exchange column is equipped with and runs through the material lifting pipe of ion exchange column inside and outside, the medial extremity of material lifting pipe stretches to near the upper portion of card, the lateral extremity of material lifting pipe pass through the pipe with negative pressure lifting bucket lower part intercommunication, the upper portion of negative pressure lifting bucket with vacuum negative pressure pump intercommunication is used for forming the inside negative pressure of negative pressure lifting bucket, be convenient for vacuum drainage the resin in the ion exchange column, be convenient for the resin granule's in the ion exchange column stirring is reached, the medium entry and the medium export of ion exchange column are used for realizing the washing of the online resin granule that stirs in the ion exchange column.
2. The on-line cleaning device for the ion exchange column according to claim 1, wherein the negative pressure material lifting tank is a tank body made of glass fiber reinforced plastic, a reinforcing ring fixedly connected with the tank body is arranged on the outer side of the tank body, and a breathing through pipe orifice is arranged at the upper part of the ion exchange column.
3. The apparatus for cleaning ion exchange column in-line according to claim 2, wherein the negative pressure lift tank is further provided with a flushing water inlet, a pressure gauge and an observation window at the upper part, and the upper and lower sides of the inside of the negative pressure lift tank are respectively provided with an upper liquid level gauge and a lower liquid level gauge.
4. The on-line cleaning device for the ion exchange column according to any one of claims 1 to 3, further comprising a hydrocyclone, wherein a tangential inlet of the hydrocyclone is communicated with a conduit at the lower part of the negative pressure stripping tank, a lower outlet of the hydrocyclone is communicated with the upper part of the ion exchange column, an upper overflow port of the hydrocyclone is used for discharging fine gel particles and crushed resin particles of the resin particles, and pipelines connected with the tangential inlet, the lower outlet and the upper overflow port of the hydrocyclone are provided with regulating valves.
5. The on-line cleaning device for the ion exchange column according to claim 4, wherein a resin transfer pipe is further connected to the guide pipe at the lower part of the negative pressure stripping tank, and the resin transfer pipe and the guide pipe are provided with regulating valves at the sides close to the stripping pipe.
6. The apparatus for cleaning ion exchange column in-line according to claim 5, wherein the regulating valve is a solenoid valve or a manual regulating valve.
7. The on-line cleaning device for the ion exchange column according to claim 1, wherein the vacuum negative pressure pump is composed of a vacuum negative pressure pump station composed of one or two water ring vacuum pumps.
8. An on-line cleaning method of an ion exchange column, characterized in that the method adopts the on-line cleaning device of the ion exchange column of claim 5, and comprises three cleaning modes:
the first mode is a material lifting gel breaking mode: the negative pressure material lifting tank enables the interior of the negative pressure material lifting tank to form negative pressure under the action of the vacuum negative pressure pump, and resin in the ion exchange column is sucked into the negative pressure material lifting tank in a vacuum drainage negative pressure material lifting mode; then under the action of the air compression equipment, positive pressure is formed inside the negative pressure material lifting tank, resin inside the negative pressure material lifting tank is spitted into the ion exchange column again, stirring of resin particles in the ion exchange column is formed, one cycle is completed by sucking and spitting, and after a set number of times is reached, automatic washing is completed through a medium inlet and a medium outlet of the ion exchange column;
the second is a material-lifting rotational flow degumming mode: the negative pressure lifting tank enables the interior of the negative pressure lifting tank to form negative pressure under the action of the vacuum negative pressure pump, and resin in the ion exchange column is sucked into the negative pressure lifting tank in a vacuum drainage negative pressure lifting mode; then under the action of the air compression equipment, positive pressure is formed inside the negative pressure material lifting tank, and resin inside the negative pressure material lifting tank is spitted into the ion exchange column again through the hydrocyclone separator, so that the resin particles in the ion exchange column are stirred, the removal of fine gel particles and broken resin particles on the surfaces of the resin particles is realized, one cycle is completed by sucking and spitting, and after the set times are reached, automatic washing is completed through a medium inlet and a medium outlet of the ion exchange column;
the third is resin roll-out mode: the negative pressure lifting tank enables the interior of the negative pressure lifting tank to form negative pressure under the action of the vacuum negative pressure pump, and resin in the ion exchange column is sucked into the negative pressure lifting tank in a vacuum drainage negative pressure lifting mode; then under the effect of air compression equipment, positive pressure is formed inside the negative pressure material lifting tank, and resin inside the negative pressure material lifting tank is rotated out through the resin rotating-out pipe, so that the resin in the ion exchange column is rotated out until all the resin in the ion exchange column is rotated out.
9. The method is characterized in that the resin in the ion exchange column is sucked and discharged by adopting a vacuum drainage negative pressure material lifting method to stir the resin particles in the ion exchange column, and then the resin particles in stirring are washed on line.
10. The method for cleaning an ion exchange column in-line according to claim 9, wherein the separation of the fine gel ions and the broken resin particles in the resin particles is also achieved by a hydrocyclone during the process of the resin being back-discharged to the ion exchange column.
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| CN202310059623.5A CN115945230B (en) | 2023-01-13 | 2023-01-13 | Online cleaning device and online cleaning method for ion exchange column |
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| CN215843018U (en) * | 2021-06-03 | 2022-02-18 | 金川集团股份有限公司 | High-efficient desorption regenerating unit of ion exchange resin column |
| CN219024334U (en) * | 2023-01-13 | 2023-05-16 | 北京航天赛德科技发展有限公司 | Online cleaning device for ion exchange column |
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| US3238126A (en) * | 1963-03-08 | 1966-03-01 | Union Tank Car Co | Method of regenerating particulate ion exchange resin particles |
| CN204848359U (en) * | 2015-08-10 | 2015-12-09 | 广东光耀玻璃有限公司 | Spiral deionized water apparatus for producing |
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| CN115945230B (en) | 2024-04-12 |
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