CN213348917U - Ion exchange resin's regenerating unit - Google Patents
Ion exchange resin's regenerating unit Download PDFInfo
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- CN213348917U CN213348917U CN202021983876.XU CN202021983876U CN213348917U CN 213348917 U CN213348917 U CN 213348917U CN 202021983876 U CN202021983876 U CN 202021983876U CN 213348917 U CN213348917 U CN 213348917U
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Abstract
The utility model relates to the technical field of ion exchange resin treatment, in particular to a regeneration device of ion exchange resin, which comprises a second valve group, wherein one end of the second valve group is connected with the water inlet end of an ion exchange column; one end of the valve group III is connected with the water outlet end of the ion exchange column; the outlet of the first valve is connected with the other end of the second valve group through a pipeline; the outlet of the second valve is connected with the other end of the third valve group through a pipeline; the outlet of the circulating pump is connected with the inlets of the first valve and the third valve through pipelines; a seventh valve, the outlet of which is connected with the inlet of the circulating pump through a pipeline; the acid/alkali liquor tank is butted with an inlet of the valve VII through a pipeline; and the inlet of the valve III is connected with the other end of the valve group II through a pipeline. The regeneration device can perform back flushing during the regeneration of the ion exchange resin, and resin hardening and agglomeration are avoided, so that the regeneration conversion rate of the resin is improved, and the service life and the service performance of the resin are effectively improved.
Description
Technical Field
The utility model relates to an ion exchange resin handles technical field, specifically is an ion exchange resin's regenerating unit.
Background
The ion exchange column is widely applied in the fields of nuclear power plants, thermal power plants, water treatment plants, petrochemical industry and the like, the failure frequency of cation exchange resin or anion exchange resin filled in the ion exchange column is high, and the current common method is to detach the ion exchange column from a system and lead out the resin in the column for in-vitro off-line regeneration. The basic process of in vitro regeneration comprises back flushing, replacement (regeneration) and cleaning. The off-line regeneration of the ion exchange resin needs to detach the ion exchange column from the system, then lead out the ion exchange resin, refill regenerated or new resin, and finally install the ion exchange column back on the system, so that the problems of more processes, complex operation, and the sealing failure of the ion exchange column and the loss increase of the ion exchange resin can occur when the ion exchange column is frequently disassembled and assembled. After the resin in the ion exchange column is led out, the resin is easily polluted in the off-line regeneration and filling processes in vitro, and the condition that the resin pollutes the water quality of a system is easy to occur.
For this reason, utility model with application number CN201720932062.5 discloses a regenerating unit of ion exchange resin, need not to take off the resin exchange column and carry out the regeneration of exchange resin, only need let in the regenerant among the regenerant storage device in the resin exchange column and can regenerate, simplified the regeneration process of exchange resin for regeneration efficiency can improve. However, this regeneration apparatus has only a replacement (regeneration) and cleaning process, and cannot perform back flushing. The resin regeneration back flushing process is to use demineralized water to feed water from the bottom (water outlet end) of the regeneration container and reversely flush the resin, which is a key step for eliminating resin agglomeration and improving the regeneration conversion rate of the resin.
SUMMERY OF THE UTILITY MODEL
The utility model provides a regenerating unit of ion exchange resin capable of backflushing, aiming at the problems in the prior art.
The utility model provides a technical scheme that its technical problem adopted is: a regeneration device of ion exchange resin comprises
One end of the valve group II is connected with the water inlet end of the ion exchange column;
one end of the valve group III is connected with the water outlet end of the ion exchange column;
the outlet of the first valve is connected with the other end of the second valve group through a pipeline;
the outlet of the second valve is connected with the other end of the third valve group through a pipeline;
the outlet of the circulating pump is connected with the inlets of the first valve and the third valve through pipelines;
a seventh valve, the outlet of which is connected with the inlet of the circulating pump through a pipeline;
the acid/alkali liquor tank is butted with an inlet of the valve VII through a pipeline;
an inlet of the valve III is connected with the other end of the valve group II through a pipeline;
the inlet of the valve IV is connected with the other end of the valve group III through a pipeline;
the inlet of the valve III is connected with the outlets of the valve III and the valve IV through pipelines;
the inlet of the valve V is connected with the outlets of the valve III and the valve IV through a pipeline, and the outlet of the valve V is butted with the acid/alkali liquid tank through a pipeline;
the conductivity meter is arranged on a pipeline between the third valve and the sixth valve;
and the desalted water part is connected with an inlet or an outlet of the circulating pump.
The regeneration device can also perform back flushing on the basis of ion exchange resin replacement and cleaning, and resin hardening and cohesion are avoided, so that the regeneration conversion rate of the resin is improved, and the service life and the service performance of the resin are effectively improved.
Preferably, the brine removal component comprises
A desalting water tank;
and an inlet of the valve eighth is connected with the demineralized water tank through a pipeline, and an outlet of the valve eighth is connected with an inlet of the circulating pump.
Preferably, the desalting water tank is provided with a first discharge valve.
Preferably, the brine removal component comprises
A desalting water pipe;
and the inlet of the valve eighth is connected with the demineralized water pipe, and the outlet of the valve eighth is connected with the outlet of the circulating pump.
Preferably, the acid/alkali liquor tank is provided with a second discharge valve.
Preferably, it further comprises
And the pressure gauge is arranged on the pipeline between the circulating pump and the first valve.
Preferably, it further comprises
The first valve bank is connected with the water inlet end of the ion exchange column;
and the valve group IV is connected with the water outlet end of the ion exchange column.
Preferably, it further comprises
And the waste liquid collecting tank/tank is in butt joint with the outlet of the valve II through a pipeline.
Preferably, the second valve bank and the third valve bank are connected with the ion exchange column through stainless steel hoses provided with stainless steel quick connectors.
Preferably, the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the seventh valve are stop valves, and the sixth valve is a ball valve.
Advantageous effects
The regeneration device can perform back flushing during the regeneration of the ion exchange resin, and resin hardening and agglomeration are avoided, so that the regeneration conversion rate of the resin is improved, and the service life and the service performance of the resin are effectively improved; the regeneration device can be used for on-line regeneration and off-line regeneration, and is wide in applicability.
Drawings
FIG. 1 is a flow chart of a back flushing process of a regeneration device for ion exchange resin according to the present application;
FIG. 2 is a flow chart of the replacement process of the regeneration apparatus of ion exchange resin according to the present application;
FIG. 3 is a flow chart of a cleaning process of the regeneration apparatus for ion exchange resin according to the present invention;
FIG. 4 is a schematic view of another embodiment of the present invention for regenerating ion exchange resin.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
A regeneration device of ion exchange resin comprises a second valve group, a third valve group, a first valve group, a second valve group, a circulating pump, a seventh valve group, an acid/alkali liquid tank, a second discharge valve, a third valve group, a fourth valve group, a sixth valve group, a fifth valve group, a sixth valve group, a fifth valve group, a sixth valve group, an eighth valve group, a sixth valve group, a fifth valve group, a sixth valve group, a fifth valve group, a third, the device comprises a conductivity meter arranged on a pipeline between a third valve and a sixth valve, a demineralized water component connected with an inlet or an outlet of the circulating pump, a pressure gauge arranged on a pipeline between the circulating pump and the first valve, and a waste liquid collecting tank/tank in butt joint with an outlet of the sixth valve through a pipeline. The regeneration device can perform back flushing during the regeneration of the ion exchange resin, and resin hardening and agglomeration are avoided, so that the regeneration conversion rate of the resin is improved, and the service life and the service performance of the resin are effectively improved.
Wherein, the demineralized water part can be as shown in figures 1, 2 and 3, and comprises a demineralized water tank and a valve eight, wherein the inlet of the valve eight is connected with the demineralized water tank through a pipeline, and the outlet of the valve eight is connected with the inlet of the circulating pump, and the demineralized water tank is provided with a first discharge valve. The demineralized water section may also be as shown in fig. 4, including a demineralized water pipe, and a valve eight having an inlet connected to the demineralized water pipe and an outlet connected to the outlet of the circulation pump.
As shown in fig. 1, the back-flushing is performed by using demineralized water to flush out the spent ion exchange resin in the ion exchange column in a loose state in preparation for the next replacement. The specific flow of the back flushing is shown as the flow direction mark in fig. 1, the eighth valve, the second valve, the third valve and the sixth valve are opened, the seventh valve, the first valve, the fourth valve and the fifth valve are closed, the circulating pump is used for providing power to enable demineralized water to enter along the water outlet end (taking the normal running state of the ion exchange column as the standard) of the ion exchange column, the water inlet end (taking the normal running state of the ion exchange column as the standard) of the ion exchange column flows out, and then waste liquid is discharged. The backflushing time is comprehensively considered according to the flow rate of a circulating pump, the characteristic parameters (diameter and length) of the ion exchange column, the capacity of the ion exchange resin, the running time of the ion exchange column and the like, and the backflushing is finished according to the condition that all the resin in the ion exchange column is loose.
As shown in fig. 2, the replacement (regeneration) is to replace various impurity anions or cations bound in the ion exchange resin with hydrogen radicals or hydroxide ions in the regenerant. Hydrochloric acid, sulfuric acid, nitric acid, and the like are generally used as regenerants for cation exchange resins, and sodium hydroxide is generally used as regenerants for anion exchange resins. The specific flow of the replacement is shown as the flow direction mark in fig. 2, the valve seven, the valve one, the valve two, the valve three, the valve four and the valve five are opened, the valve eight, the valve two, the valve three and the valve six are closed, the circulating pump is used for providing power to enable desalted water containing a regenerant (the concentration of the general regenerant is 3%) to enter along the water inlet end (taking the normal operation state of the ion exchange column as the standard) of the ion exchange column, the water outlet end (taking the normal operation state of the ion exchange column as the standard) of the ion exchange column flows out, and then the desalted water flows back to the acid/alkali liquid tank. The replacement time is determined by taking the comprehensive consideration of the flow rate of the circulating pump, the characteristic parameters (diameter and length) of the ion exchange column, the capacity of the ion exchange resin, the operation time of the ion exchange column, the failure ratio of the ion exchange resin and the like into consideration, and the resin in the ion exchange column is completely converted into the initial color (only for the color-changing resin). If the ion exchange resin is a non-discoloring resin, the replacement is usually carried out for 1 to 2 hours. And judging according to the change condition of the outlet conductivity representation value, wherein the conductivity representation value is basically maintained unchanged after replacement is completed.
As shown in FIG. 3, the cleaning is to clean the regenerant in the ion exchange column with demineralized water, so as to prevent the regenerant from being introduced into the system to pollute the water. The specific cleaning process is shown as the fluid direction mark in fig. 3, opening valve eight, valve one, valve group two, valve group three, valve four and valve six, closing valve seven, valve two, valve three and valve five, using the circulating pump to provide power to enter demineralized water along the water inlet end of the ion exchange column (taking the normal operation state of the ion exchange column as the standard), and discharging the waste liquid after the water outlet end (taking the normal operation state of the ion exchange column as the standard). The cleaning time is based on the comprehensive consideration of the flow rate of the circulating pump, the characteristic parameters (diameter and length) of the ion exchange column, the capacity of the ion exchange resin, the using amount of the regenerant and the like, and the basis of the condition that the cleaning is finished is that the outlet conductivity is from the value indicated by the outlet conductivity to the specified value. After the ion exchange column is washed, the seventh valve, the second valve bank, the third valve bank and the fifth valve bank are required to be closed, and the eighth valve, the first valve, the second valve, the third valve, the fourth valve and the sixth valve are opened to wash out the residual regenerant in the pipeline. And finally, opening the first discharge valve and the second discharge valve as required to discharge the regenerated residual desalted water and acid/alkali liquor to the designated positions.
The regeneration device of the ion exchange resin further comprises a first valve bank connected with the water inlet end of the ion exchange column and a fourth valve bank connected with the water outlet end of the ion exchange column. The method and the device can be used for carrying out on-line regeneration and off-line regeneration. During on-line regeneration, the ion exchange column and the system need to be dismantled firstly, then the ion exchange column and the system are reconnected through the first valve group and the fourth valve group, and then other parts of the regeneration device are connected with the ion exchange column. And the first valve bank and the fourth valve bank are required to be closed in the whole regeneration process, so that the purpose of isolating the ion exchange column from the system is achieved, the second valve bank and the third valve bank are closed after regeneration is completed, and the first valve bank and the fourth valve bank are opened according to requirements. During off-line regeneration, the ion exchange column and the system are only required to be dismantled and then connected with the regeneration device (the first valve bank and the fourth valve bank can be not connected).
In addition, the acid/alkali liquor tank of the application is made of plastic materials, the volume of the acid/alkali liquor tank is 100L, and all the other pipelines are 316 (L) stainless steel pipes except 316 (L) stainless steel hoses used between the second valve bank and the ion exchange column and between the third valve bank and the ion exchange column. The diameter of the main pipe is 25 mm and the diameter of the branch pipe is 16 mm. The second valve group, the third valve group and the ion exchange column are connected by 316 (L) stainless steel quick joints, and other pipelines are welded with the valves and the pipelines. Except that the first discharge valve, the second discharge valve and the sixth discharge valve are ball valves, all other valves are 316 (L) stainless steel stop valves. The discharge valve is made of plastic material, and the valve six is made of 316 (L) stainless steel material. The conductivity meter flow cell is in threaded connection with the pipeline and is made of stainless steel.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (10)
1. An apparatus for regenerating an ion exchange resin, characterized in that: comprises that
One end of the valve group II is connected with the water inlet end of the ion exchange column;
one end of the valve group III is connected with the water outlet end of the ion exchange column;
the outlet of the first valve is connected with the other end of the second valve group through a pipeline;
the outlet of the second valve is connected with the other end of the third valve group through a pipeline;
the outlet of the circulating pump is connected with the inlets of the first valve and the third valve through pipelines;
a seventh valve, the outlet of which is connected with the inlet of the circulating pump through a pipeline;
the acid/alkali liquor tank is butted with an inlet of the valve VII through a pipeline;
an inlet of the valve III is connected with the other end of the valve group II through a pipeline;
the inlet of the valve IV is connected with the other end of the valve group III through a pipeline;
the inlet of the valve III is connected with the outlets of the valve III and the valve IV through pipelines;
the inlet of the valve V is connected with the outlets of the valve III and the valve IV through a pipeline, and the outlet of the valve V is butted with the acid/alkali liquid tank through a pipeline;
the conductivity meter is arranged on a pipeline between the third valve and the sixth valve;
and the desalted water part is connected with an inlet or an outlet of the circulating pump.
2. The apparatus for regenerating ion exchange resin according to claim 1, wherein: the demineralized water component comprises
A desalting water tank;
and an inlet of the valve eighth is connected with the demineralized water tank through a pipeline, and an outlet of the valve eighth is connected with an inlet of the circulating pump.
3. The apparatus for regenerating ion exchange resin according to claim 2, wherein: the desalting water tank is provided with a first discharge valve.
4. The apparatus for regenerating ion exchange resin according to claim 1, wherein: the demineralized water component comprises
A desalting water pipe;
and the inlet of the valve eighth is connected with the demineralized water pipe, and the outlet of the valve eighth is connected with the outlet of the circulating pump.
5. The apparatus for regenerating ion exchange resin according to claim 1, wherein: and the acid/alkali liquor tank is provided with a second discharge valve.
6. The apparatus for regenerating ion exchange resin according to claim 1, wherein: also comprises
And the pressure gauge is arranged on the pipeline between the circulating pump and the first valve.
7. The apparatus for regenerating ion exchange resin according to claim 1, wherein: also comprises
The first valve bank is connected with the water inlet end of the ion exchange column;
and the valve group IV is connected with the water outlet end of the ion exchange column.
8. The apparatus for regenerating ion exchange resin according to claim 1, wherein: also comprises
And the waste liquid collecting tank/tank is in butt joint with the outlet of the valve II through a pipeline.
9. The apparatus for regenerating ion exchange resin according to claim 1, wherein: and the second valve group and the third valve group are connected with the ion exchange column through stainless steel hoses provided with stainless steel quick connectors.
10. The apparatus for regenerating ion exchange resin according to claim 1, wherein: the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the seventh valve are stop valves, and the sixth valve is a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021983876.XU CN213348917U (en) | 2020-09-11 | 2020-09-11 | Ion exchange resin's regenerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021983876.XU CN213348917U (en) | 2020-09-11 | 2020-09-11 | Ion exchange resin's regenerating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213348917U true CN213348917U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021983876.XU Active CN213348917U (en) | 2020-09-11 | 2020-09-11 | Ion exchange resin's regenerating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213348917U (en) |
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2020
- 2020-09-11 CN CN202021983876.XU patent/CN213348917U/en active Active
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