CN110560183A - Automatic resin column regeneration device and automatic regeneration method - Google Patents
Automatic resin column regeneration device and automatic regeneration method Download PDFInfo
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- CN110560183A CN110560183A CN201910953645.XA CN201910953645A CN110560183A CN 110560183 A CN110560183 A CN 110560183A CN 201910953645 A CN201910953645 A CN 201910953645A CN 110560183 A CN110560183 A CN 110560183A
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- regeneration
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- 239000011347 resin Substances 0.000 title claims abstract description 139
- 229920005989 resin Polymers 0.000 title claims abstract description 139
- 238000011069 regeneration method Methods 0.000 title claims abstract description 111
- 230000008929 regeneration Effects 0.000 title claims abstract description 96
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 78
- 239000003814 drug Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000011010 flushing procedure Methods 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- 230000001172 regenerating effect Effects 0.000 claims description 19
- 239000002253 acid Substances 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 14
- 239000012535 impurity Substances 0.000 abstract description 7
- 150000002500 ions Chemical class 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 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 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000009103 reabsorption Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/60—Cleaning or rinsing ion-exchange beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/80—Automatic regeneration
- B01J49/85—Controlling or regulating devices therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses an automatic regeneration device and an automatic regeneration method for a resin column. The device includes: the box body is provided with a liquid medicine tank, a water inlet and a water outlet; the first pipeline is connected with the water inlet through a first valve, and the first pipeline is connected with the water outlet through a second valve; the second pipeline is connected with the water inlet through a third valve and is connected with the water outlet through a fourth valve; the resin column regeneration module is respectively connected with the first pipeline and the second pipeline and comprises a plurality of resin columns; and the third pipeline is respectively connected with the liquid medicine tank and the second pipeline and is provided with a fifth valve. The method is a direct-discharge regeneration method, can effectively take away impurity ions, and greatly improves the regeneration degree of the resin column. The device need not to take out resin, easy operation, and direct contact corrosive liquids during the use is high, security.
Description
Technical Field
The invention relates to the technical field of resin regeneration, in particular to an automatic resin column regeneration device and an automatic resin column regeneration method.
Background
After the ion exchange resin is used for a period of time, the adsorbed impurities are close to saturation state, regeneration treatment is carried out, and the ions and other impurities adsorbed by the resin are eluted and removed by chemical agents, so that the functional groups of the resin are recovered to the original state for reuse.
Currently, the commonly adopted ion exchange resin regeneration method is to manually take out the ion exchange resin from the resin column, perform soaking regeneration, and then fill the regenerated resin back into the resin column. The method needs manual operation, the regeneration degree of the resin is low and is less than 70 percent; in addition, the regeneration liquid needs to be manually stirred in the regeneration process, the regeneration liquid has corrosivity, the regeneration liquid is easy to splash during manual operation, and the safety problem exists.
disclosure of Invention
The invention aims to provide an automatic resin column regeneration device and an automatic resin column regeneration method, which aim to solve the problems of low resin regeneration efficiency, low safety and complex operation in the prior art.
in order to solve the above problems, the present invention proposes the following technical solutions:
in a first aspect, an embodiment of the present invention provides an automatic resin column regeneration apparatus, including:
The box body is provided with a liquid medicine tank, a water inlet and a water outlet;
The first pipeline is connected with the water inlet through a first valve, and the first pipeline is connected with a water outlet through a second valve;
The second pipeline is connected with the water inlet through a third valve and is connected with a water outlet through a fourth valve;
The resin column regeneration module is respectively connected with the first pipeline and the second pipeline and comprises a plurality of resin columns;
And the third pipeline is respectively connected with the liquid medicine tank and the second pipeline and is provided with a fifth valve.
the acid liquor tank is connected with the liquid medicine tank through a fourth pipeline; the water inlet is connected with the liquid medicine tank through a fifth pipeline.
The technical scheme is that the fourth pipeline and the fifth pipeline are both provided with a switch valve and a metering pump.
the technical scheme is that the box body further comprises an air outlet, and the air outlet is provided with a fan.
the technical scheme is that a detachable liquid accumulating tank is arranged below the resin column.
Its further technical scheme does, resin regeneration module is equipped with erection joint and elasticity clamp, the resin post set up in erection joint and by the elasticity clamp is fixed.
according to the technical scheme, the side face of the box body is further provided with a PLC control module, the PLC control module is respectively connected with the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the switch valve and the metering pump, and the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the switch valve and the metering pump are all controlled by the PLC control module.
the technical scheme is that the box body is also provided with universal wheels, a handle and a hanging ring, and the universal wheels are arranged on the bottom surface of the box body; the handle is arranged on the side surface of the box body; the lifting ring is arranged on the top surface of the box body.
In a second aspect, an embodiment of the present invention further provides an automatic resin column regeneration method, which is applied to the automatic resin column regeneration apparatus according to the first aspect, and includes the following steps:
Forward flushing, keeping the second valve, the third valve and the fifth valve closed, opening the first valve and the fourth valve, introducing desalted water into the water inlet, and allowing the desalted water to flow to the resin column regeneration module through the first pipeline and flow to the water outlet through the fourth valve;
Back flushing, namely keeping the first valve, the fourth valve and the fifth valve closed, opening the second valve and the third valve, introducing desalted water into the water inlet, and allowing the desalted water to flow to the resin column regeneration module through a second pipeline and flow to a water outlet through the second valve;
performing first countercurrent regeneration, keeping the first valve, the third valve and the fourth valve closed, opening the second valve and the fifth valve, enabling first liquid medicine in the liquid medicine tank to enter the second pipeline from the third pipeline, performing regeneration washing on resin columns at the flow rate of 50-100 ml/min of each resin column, enabling the resin columns to flow to a water outlet from the second valve, and performing regeneration washing for 30-60 min;
Performing second countercurrent regeneration, keeping the first valve, the third valve and the fourth valve closed, opening the second valve and the fifth valve, enabling second liquid medicine in the liquid medicine tank to enter a second pipeline from a third pipeline, flushing the resin columns at the flow rate of 50-100 ml/min of each resin column, and enabling the resin columns to flow to a water outlet from the second valve, wherein the flushing time is 5-10 min;
Repeating the forward flushing step and the backward flushing step, and finishing regeneration when the conductivity value of the solution at the water outlet is in a preset interval;
Wherein the first liquid medicine is a hydrochloric acid solution with the volume fraction of 4-6%;
The second liquid medicine is hydrochloric acid solution with the volume fraction of 0.1-3.9%.
The further technical proposal is that the washing time of the forward washing step is 5-20 min; the washing time of the back washing step is 5-20 min.
Compared with the prior art, the invention can achieve the following technical effects:
According to the automatic resin column regeneration device provided by the embodiment of the invention, the arrangement of the pipeline and the valve is adopted, the desalted water and the regeneration liquid are controlled to be directly discharged after being washed by the resin column, the resin does not need to be taken out, other impurities are avoided, the operation process is simplified, and the resin regeneration efficiency is improved.
in addition, the automatic resin column regeneration device provided by the embodiment of the invention is automatically controlled, the regeneration of the resin column can be automatically realized through the PLC control module, the whole process does not need manual operation after parameters are set, corrosive liquid cannot be contacted, and the safety is greatly improved.
The resin column automatic regeneration method provided by the embodiment of the invention is a direct-discharge regeneration method, desalted water and regeneration liquid are directly discharged after passing through the resin column, the liquid washed through the resin column does not flow back any more, impurity ions of the resin column can be effectively taken away by the flowing water type washing, air bubbles are not introduced, the regeneration degree of the resin column is greatly improved, and the resin column automatic regeneration method has higher regeneration degree compared with the traditional soaking reflux method.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of an automatic resin column regenerating apparatus according to an embodiment of the present invention;
FIG. 2 is a front view of an automatic resin column regenerating apparatus according to an embodiment of the present invention;
FIG. 3 is a left side view of an automatic resin column regenerating apparatus according to an embodiment of the present invention;
FIG. 4 is a right side view of an automatic resin column regenerating apparatus according to an embodiment of the present invention;
FIG. 5 is a top view of an automatic resin column regenerating apparatus according to an embodiment of the present invention;
fig. 6 is a piping layout diagram of an automatic resin column regenerating apparatus according to an embodiment of the present invention.
reference numerals
The box 1, hydrops groove 2, door plant 3, transparent window 4, resin column 5, ball valve 6, flowmeter 7, PLC control module 8, air exit 9, water inlet 10, outlet 11, rings 12, handle 13, universal wheel 14, first valve MV1, second valve MV3, third valve MV2, fourth valve MV4, fifth valve BV2, medicinal liquid tank T1, acidizing fluid tank T2.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, wherein like reference numerals represent like elements in the drawings. It is apparent that the embodiments to be described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
it will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Referring to fig. 1 to 6, an embodiment of the present invention provides an automatic resin column regeneration apparatus, including:
The box body 1 is provided with a liquid medicine tank T1, a water inlet 10 and a water outlet 11;
A first pipe connected to the water inlet 10 through a first valve MV1, and connected to the water discharge port 11 through a second valve MV 3;
A second pipe connected to the water inlet 10 through a third valve MV2, and connected to the water discharge port 11 through a fourth valve MV 4;
the resin column regeneration module is respectively connected with the first pipeline and the second pipeline and comprises a plurality of resin columns 5;
and the third pipeline is respectively connected with the liquid medicine tank T1 and the second pipeline, and is provided with a fifth valve BV2 and a metering pump.
The metering pump on the third pipeline can control the amount of the liquid medicine flowing into the second pipeline so as to reasonably distribute the liquid medicine for use and avoid waste.
the water inlet 10 is provided with an adjusting valve and a pressure gauge, and can monitor and adjust the flow and pressure of inlet water. The water outlet 11 is arranged at the bottom of the box body 1.
specifically, the resin column regeneration module provided by this embodiment can regenerate 8 small-volume resin columns (column length 650 mm/inner diameter 40mm) or 4 large-volume resin columns (column length 400 mm/inner diameter 86mm) simultaneously, each resin column is equipped with a control valve and a flowmeter, and regeneration and flushing are performed through connection of a quick connector and a resin column inlet and outlet, and the number of the resin columns regenerated simultaneously can be flexibly selected.
The liquid medicine tank T1 is filled with liquid medicine, and the regeneration amount of the resin can be controlled by setting the volume of the liquid medicine tank. For example, the liquid medicine tank T1 has a maximum volume of 30L and a total amount of regenerated resin of 8-10L.
the liquid medicine is the regeneration liquid.
according to the automatic resin column regeneration device provided by the embodiment of the invention, the arrangement of the pipeline and the valve is adopted, the desalted water and the regeneration liquid are controlled to be directly discharged after being washed by the resin column, the resin does not need to be taken out, other impurities are avoided, the operation process is simplified, and the resin regeneration efficiency is improved.
The acid liquor tank T2 is further included, and the acid liquor tank T2 is connected with the liquid medicine tank T1 through a fourth pipeline; the water inlet 10 is connected with a liquid medicine tank T1 through a fifth pipeline.
specifically, a preset volume of acid liquid is conveyed to the liquid medicine tank from the acid liquid tank, a preset volume of demineralized water is added through the water inlet, and the mixture is mixed to form the liquid medicine for resin regeneration. For example, a 30% hydrochloric acid solution in an acid tank is prepared into a 5% hydrochloric acid solution in a liquid medicine tank for resin regeneration.
and the fourth pipeline and the fifth pipeline are both provided with a switch valve and a metering pump. The amount of desalted water entering the liquid medicine tank and the amount of acid liquid tank output to the liquid medicine tank can be controlled by the metering pump.
in specific implementation, the box body further comprises an air outlet 9, and the air outlet is provided with a fan.
In the regeneration process of the resin, acid mist can be generated by preparing or replacing the liquid medicine, and residual smell in the box body can be prevented by arranging the air outlet.
In specific implementation, the resin regeneration module is provided with an installation joint and an elastic clamp, and the resin column is arranged on the installation joint and fixed by the elastic clamp. The elastic clamp is convenient for fixing the resin column after installation, and normal operation of a regeneration process is ensured.
In specific implementation, the detachable liquid accumulating tank 2 is arranged below the resin column 5. Although water in the pipeline is directly discharged after passing through the resin column, accumulated water is remained at the mounting joint after the resin column is taken away, and the residual liquid can be contained by arranging the accumulated liquid tank 2 to keep the box body clean.
In a specific embodiment, the side surface of the box body is further provided with a PLC control module 8, the PLC control module 8 is respectively connected with the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the switch valve and the metering pump, and the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the switch valve and the metering pump are all controlled by the PLC control module.
The PLC control module 8 comprises a control panel, an acid concentration meter display panel and a conductivity display panel, and is arranged on the side face of the box body, so that the parameters of the regeneration process can be observed conveniently. An acid concentration meter and a conductivity meter are further arranged in the pipeline, the conductivity meter is used for evaluating the washing regeneration effect, and data information of the acid concentration meter and the conductivity meter is fed back and displayed in a PLC control panel to monitor conditions at any time. The PLC control module is preset with a main process flow, a regeneration sequence and some key data information, and manual regeneration is carried out by changing the data parameters of resin regeneration and selecting the regeneration steps to be executed; meanwhile, the full-automatic regeneration can be carried out by one key after the parameters are set.
The automatic resin column regeneration device provided by the embodiment of the invention is automatically controlled, the regeneration of the resin column can be automatically realized through the PLC control module, the manual operation is not needed after the parameters are set in the whole process, the safety problem of the traditional regeneration method is solved, and the safety is greatly improved.
The box body is also provided with universal wheels 14, a handle 13 and a hanging ring 12, and the universal wheels 14 are arranged on the bottom surface of the box body 1; the handle 13 is arranged on the side surface of the box body 1; the hanging ring 12 is arranged on the top surface of the box body 1. The box body 1 is convenient to move, transport and hoist.
specifically, the bottom of the box body 1 is provided with 4 universal wheels for bearing 400 Kg. Wherein two universal wheels on right side have the locking plectrum, and the unblock universal wheel can be with its removal to level and smooth position, places steady back locking universal wheel.
The front and the back of the box body are provided with small strong acid corrosion resistant lighting lamps, so that the internal condition of the box body can be observed without being limited by external light.
the connecting pipe fittings inside the box body are made of corrosion-resistant materials, and the hose is made of strong acid-resistant polytetrafluoroethylene materials. The box adopts the stamping forming of the stainless steel plate of 2mm thickness, and inside and outside equal spraying anti-rust paint, steel construction and part are connected closely, and the material all adopts resistant strong acid corrosion material and adopts the design of two opening doors of area lock, and the space utilization is reasonable, makes things convenient for the dismantlement installation of accessory. The door plate 3 is provided with a transparent window 4 made of strong acid corrosion resistant material, so that the condition inside the box body can be observed without repeatedly opening and closing the box door.
With reference to fig. 6, in a second aspect, an embodiment of the present invention further provides an automatic resin column regeneration method applied to the automatic resin column regeneration apparatus, including the following steps:
Forward flushing is carried out for 5-20min, the second valve MV3, the third valve MV2 and the fifth valve BV2 are kept closed, the first valve MV1 and the fourth valve MV4 are opened, the desalted water is introduced into the water inlet, and flows to the resin column regeneration module through the first pipeline and flows to the water outlet through the fourth valve MV 4;
Back flushing for 5-20min, keeping a first valve MV1, a fourth valve MV4 and a fifth valve BV2 closed, opening a second valve MV3 and a third valve MV2, introducing desalted water into the water inlet, and allowing the desalted water to flow to the resin column regeneration module through a second pipeline and flow to a water outlet through a second valve MV 3;
The first countercurrent regeneration is carried out, the first valve MV1, the third valve MV2 and the fourth valve MV4 are kept closed, the second valve MV3 and the fifth valve BV2 are opened, the first liquid medicine in the liquid medicine tank enters the second pipeline from the third pipeline, the resin columns are subjected to regeneration washing at the flow rate of 50-100 ml/min of each resin column, the liquid medicine flows to a water outlet from the second valve MV3, and the regeneration washing time is 30-60 min;
Performing second countercurrent regeneration, keeping the first valve MV1, the third valve MV2 and the fourth valve MV4 closed, opening the second valve MV3 and the fifth valve BV2, feeding a second liquid medicine in the liquid medicine tank into a second pipeline through the third pipeline, flushing the resin columns at the flow rate of 50-100 ml/min of each resin column, and flowing to a water outlet through the second valve MV3 for 5-10 min;
repeating the forward flushing step and the backward flushing step, and finishing regeneration when the conductivity value of the solution at the water outlet is in a preset interval;
Wherein the first liquid medicine is a hydrochloric acid solution with the volume fraction of 4-6%;
the second liquid medicine is hydrochloric acid solution with the volume fraction of 0.1-3.9%.
In one embodiment, the sequence of the forward and reverse flushing steps can be interchanged.
Referring to fig. 6, in the embodiment, when the resin column automatic regeneration device is used for performing the resin column automatic regeneration operation, it is required to check that the pipeline, the pressure, and the like in the device are all in the ready state, and the valve in the pipeline is closed. And after the resin column is installed, the regeneration operation can be carried out. For example, in one embodiment of a piping scheme, the process steps for regenerating the resin column are as follows:
A. Forward flush (10 min): and (4) controlling MV1 and MV4 to be opened, flushing the resin from top to bottom by the demineralized water for 10 minutes, and automatically entering the next step B after the flushing is finished.
B. back flush (10 min): controlling MV2 and MV3 to be opened, and flushing the resin from bottom to top by the demineralized water; the time is 10 minutes, and the washing is finished and the next step D is automatically carried out.
C. during the forward and reverse flushing, the regeneration liquid starts to be automatically configured (within 20 minutes): controlling an electromagnetic valve SV1 to be opened, injecting demineralized water into a mixing box T1, adding water to a position of 25L, and automatically closing SV 1; the dosing pump P2 is automatically started, 5L of 30% hydrochloric acid is injected into the tank T1, the circulating pump P3 is started at the same time, the mixture is stirred and mixed until the hydrochloric acid with the concentration of 5%, and the stirring is stopped after the mixture is completed.
D. First counter-current regeneration (40 min): the electric valve MV3 and the pump P1 were controlled to automatically open, and the regeneration liquid was injected into the resin column. The flow rate of the pump P1 is preset to be 50-100 ml/min for each resin column; when the solution tank reaches a low liquid level (a liquid sample switch is arranged on a pipeline in front of the pump P1), the pump P1 automatically stops; the tank T1 is well matched with the flow rate of the pump in design, and the working time is not less than 30 min. The program ends and automatically enters the next step E.
E. Second counter-current regeneration (10 min): and controlling an electromagnetic valve SV1 to be opened, adding demineralized water into the T1 tank to dilute the residual regeneration liquid in the T1 tank, uniformly mixing, controlling a pump P1 to be opened, and directly discharging the mixed liquid after passing through the resin column to play a role in flushing the residual regeneration liquid in the resin column. The program ends and automatically proceeds to the next step F.
F. discharge forward wash (15 min): and (4) controlling MV1 and MV4 to be opened, flushing the resin from top to bottom by the demineralized water for 15 minutes, and automatically entering the next step G after the flushing is finished.
G. discharge backwash (15 minutes upwards): and (3) controlling MV2 and MV3 to be automatically opened, flushing the resin by the desalted water from bottom to top, and automatically stopping flushing until the conductivity is qualified.
H. Emptying the system: opening a valve MV5, and opening the water in the emptying pipeline and the resin column; BV1 was manually turned on and a small amount of residual liquid (which had been flushed with clear water) that may be present in the line before pump P1 was emptied.
I. Taking out the resin column: and (4) disconnecting the power supply, opening the door plate, and loosening the clamp to take down the resin column. I.e. the regeneration is completed.
According to detection, in the conventional soaking type regeneration mode, because the resin can absorb impurity ions in the soaking solution again, the regeneration is incomplete, so that the regeneration efficiency of the soaking type regenerated resin column is limited, and is usually 60-70%.
the resin column automatic regeneration device provided by the embodiment of the invention is matched with the resin column automatic regeneration method, the regeneration liquid is directly discharged after flowing through the resin column, the problem of reabsorption does not exist, the regeneration degree of the resin reaches more than 98%, the corresponding regeneration liquid dosage is matched according to the resin quantity, the flow of the regeneration liquid flowing to the resin column is controlled, the resin regeneration can be effectively ensured, the regeneration liquid dosage is not wasted, the operation is simple, and the practicability is strong.
In addition, the automatic resin column regeneration device provided by the embodiment of the invention is automatic control, the regeneration of the resin column can be automatically realized through the PLC control module, the whole process does not need manual operation after parameters are set, corrosive liquid cannot be contacted, the safety problem of the traditional regeneration method is solved, and the safety of the device is greatly improved.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. an automatic regenerating device for a resin column, comprising:
the box body is provided with a liquid medicine tank, a water inlet and a water outlet;
The first pipeline is connected with the water inlet through a first valve, and the first pipeline is connected with a water outlet through a second valve;
The second pipeline is connected with the water inlet through a third valve and is connected with a water outlet through a fourth valve;
the resin column regeneration module is respectively connected with the first pipeline and the second pipeline and comprises a plurality of resin columns;
And the third pipeline is respectively connected with the liquid medicine tank and the second pipeline and is provided with a fifth valve.
2. The automatic resin column regenerating device according to claim 1, further comprising an acid solution tank connected to the liquid medicine tank through a fourth pipe; the water inlet is connected with the liquid medicine tank through a fifth pipeline.
3. The apparatus for automatically regenerating a resin column as set forth in claim 2, wherein said fourth pipe and said fifth pipe are each provided with a switching valve and a metering pump.
4. The resin column automatic regenerating device according to claim 1, wherein said case further comprises an air outlet, said air outlet being provided with a fan.
5. The automatic regenerating device of resin column as claimed in claim 1, wherein a detachable liquid accumulating tank is provided below the resin column.
6. The automatic resin column regenerating device according to claim 1, wherein the resin regenerating module is provided with a mounting joint and an elastic clamp, and the resin column is provided to the mounting joint and fixed by the elastic clamp.
7. the automatic resin column regenerating device according to claim 3, wherein a PLC control module is further provided on the side of the box body, the PLC control module is respectively connected with the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the switch valve and the metering pump, and the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the switch valve and the metering pump are all controlled by the PLC control module.
8. The automatic resin column regenerating device according to claim 1, wherein the case is further provided with a universal wheel, a handle and a hanging ring, the universal wheel being provided on the bottom surface of the case; the handle is arranged on the side surface of the box body; the lifting ring is arranged on the top surface of the box body.
9. An automatic resin column regenerating method applied to the automatic resin column regenerating device according to any one of claims 1 to 8, comprising the steps of:
forward flushing for 5-20min, keeping the second valve, the third valve and the fifth valve closed, opening the first valve and the fourth valve, introducing desalted water into the water inlet, wherein the desalted water flows to the resin column regeneration module through the first pipeline and flows to the water outlet through the fourth valve;
Back flushing for 5-20min, keeping the first valve, the fourth valve and the fifth valve closed, opening the second valve and the third valve, introducing desalted water into the water inlet, and allowing the desalted water to flow to the resin column regeneration module through a second pipeline and flow to a water outlet through the second valve;
performing first countercurrent regeneration, keeping the first valve, the third valve and the fourth valve closed, opening the second valve and the fifth valve, enabling first liquid medicine in the liquid medicine tank to enter the second pipeline from the third pipeline, performing regeneration washing on resin columns at the flow rate of 50-100 ml/min of each resin column, enabling the resin columns to flow to a water outlet from the second valve, and performing regeneration washing for 30-60 min;
performing second countercurrent regeneration, keeping the first valve, the third valve and the fourth valve closed, opening the second valve and the fifth valve, enabling second liquid medicine in the liquid medicine tank to enter a second pipeline from a third pipeline, flushing the resin columns at the flow rate of 50-100 ml/min of each resin column, and enabling the resin columns to flow to a water outlet from the second valve, wherein the flushing time is 5-10 min;
repeating the forward flushing step and the backward flushing step, and finishing regeneration when the conductivity value of the solution at the water outlet is in a preset interval;
Wherein the first liquid medicine is a hydrochloric acid solution with the volume fraction of 4-6%;
The second liquid medicine is hydrochloric acid solution with the volume fraction of 0.1-3.9%.
10. The method for automatically regenerating a resin column according to claim 9, wherein the order of the forward washing step and the backward washing step is interchangeable.
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