CN118122393A - Control method and control system for continuous ion exchange device for selective separation of metal ions - Google Patents
Control method and control system for continuous ion exchange device for selective separation of metal ions Download PDFInfo
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- CN118122393A CN118122393A CN202311076921.1A CN202311076921A CN118122393A CN 118122393 A CN118122393 A CN 118122393A CN 202311076921 A CN202311076921 A CN 202311076921A CN 118122393 A CN118122393 A CN 118122393A
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 229910021645 metal ion Inorganic materials 0.000 title claims abstract description 40
- 238000005342 ion exchange Methods 0.000 title claims abstract description 34
- 238000000926 separation method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 10
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 10
- 150000002739 metals Chemical class 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 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 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 150000002500 ions Chemical class 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 10
- 230000008929 regeneration Effects 0.000 claims description 9
- 238000011069 regeneration method Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007670 refining Methods 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
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/02—Column or bed processes
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by quality surveillance of production
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Automation & Control Theory (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention relates to a control method and a control system of a continuous ion exchange device for selectively separating metal ions. Based on the selective sequence of ion exchange resin to different metal ions, the method analyzes and compares the parameters by detecting various parameters of different column positions of the continuous ion exchange device, and automatically controls each technological process to finish the separation of different metal ions by exchange (adsorption). The continuous ion exchange device consists of a plurality of resin columns and distribution valves, and realizes the continuous switching of the resin columns through the conversion of the distribution valves, so that the device can complete all the technological processes in one technological cycle. And the on-site detection instrument is used for collecting the operation parameters, analyzing and comparing the parameters, and completing the automatic control of the ion exchange separation of different metals. The invention has the advantages of high real-time performance, high automation degree, good accuracy, good separation effect, wide application range and the like.
Description
Technical Field
The invention relates to a control method and a control system of a continuous ion exchange device for selectively separating metal ions, in particular to a control method and a control system for detecting various parameters of different column positions of the continuous ion exchange device based on the selective sequence of ion exchange resins for different metal ions, analyzing and comparing the various parameters, automatically controlling each process of exchange (adsorption), washing, regeneration, washing, transformation, washing and the like according to the comparison condition, and completing the separation of different metal ions.
Background
Heavy metal ion separation is an important application value field, however, the traditional separation method is low in efficiency, and the requirements of the modern industry on high-efficiency, continuous and accurate control cannot be met. In addition, these methods often require large amounts of chemicals and human resources, increasing the cost of operation. In addition, traditional separation methods tend to be difficult to meet increasingly stringent environmental requirements. Therefore, the novel, efficient and continuously controllable heavy metal ion separation method is developed, and has important significance for improving the industrial efficiency and reducing the environmental impact.
The continuous ion exchange device is a completely innovative separation process technology, and is developed by combining the technical advantages of a continuous countercurrent system on the basis of the traditional fixed bed resin adsorption and ion exchange process. The continuous ion exchange device can be used for separating, refining and recovering specific effective substances and harmful substances in various industrial water and other solutions, and the system can use traditional adsorbents (such as ion exchange resins, activated carbon, synthetic adsorbents and the like). The continuous ion exchange device consists of a plurality of resin columns (10-50 exchange columns) and distribution valves, and the continuous switching of the resin columns is realized through the switching of the distribution valves, so that the continuous ion exchange device can complete all the process procedures of exchange (adsorption), washing, regeneration, washing, transformation and washing in one process cycle.
Because of the different affinities of ion exchange resins for different metal ions, the separation and purification of metal ions in metal separation by using ion exchange (adsorption) technology is an excellent mode. The higher-valence metal is preferentially exchanged (adsorbed) by the resin; metal ions with the same ionic valence state, and the affinity of the resin to the metal ions is reduced along with the increase of the radius of hydrated ions; in the same valence state, metal ions having a small ionic radius are preferentially exchanged (adsorbed) by the resin. Therefore, the same resin is used, and the mixed wastewater (solution) containing different metals is passed through the resin, so that the metal ions with the earlier selectivity are preferentially adsorbed by the resin, thereby realizing the selective exchange (adsorption) separation of the different metal ions by the continuous ion exchange device.
The control method and the control system of the invention simultaneously integrate the advantages of the continuous ion exchange device and the ion exchange resin selectivity, can efficiently and automatically finish the separation and extraction of different metals in the wastewater (waste liquid), have the advantages of high instantaneity, high degree of automation, good accuracy, good separation effect, wide application range and the like, and compared with the existing control method and technology, the system reduces the manual intervention, improves the working efficiency, is suitable for various industrial processes requiring metal ion separation, such as chemical industry, electroplating, smelting, garbage treatment, water treatment, medicine, food processing and other fields, and has great significance.
Disclosure of Invention
The invention relates to a control method and a control system of a continuous ion exchange device for selectively separating metal ions, in particular to a control method and a control system for detecting various parameters of different column positions of the continuous ion exchange device based on the selective sequence of ion exchange resins for different metal ions, analyzing and comparing the various parameters, automatically controlling each process of exchange (adsorption), washing, regeneration, washing, transformation, washing and the like according to the comparison condition, and completing the separation of different metal ions.
The continuous ion exchange device consists of a plurality of resin columns (10-50 exchange columns) and distribution valves, and the continuous switching of the resin columns is realized through the switching of the distribution valves, so that the continuous ion exchange device can complete all the process procedures of exchange (adsorption), washing, regeneration, washing, transformation and washing in one process cycle.
Because of the different affinities of ion exchange resins for different metal ions, higher-valence metals are preferentially exchanged (adsorbed) by the resins; metal ions with the same ionic valence state, and the affinity of the resin to the metal ions is reduced along with the increase of the radius of hydrated ions; in the same valence state, metal ions having a small ionic radius are preferentially exchanged (adsorbed) by the resin. Therefore, the same resin is used, and the mixed wastewater (solution) containing different metals is passed through the resin, so that the metal ions with the earlier selectivity are preferentially adsorbed by the resin, thereby realizing the selective exchange (adsorption) separation of the different metal ions by the continuous ion exchange device.
The principle of the resin in the regeneration, elution and analysis process is the same as the adsorption principle, and the resin for preferentially regenerating (analyzing) the metal ions with the saturation sequence being in front can meet the separation of different metals; at the same time, the higher the concentration of the regenerating (analyzing) liquid.
The control method and the control system of the invention simultaneously integrate the advantages of the continuous ion exchange device and the ion exchange resin selectivity, can efficiently and automatically finish the separation and extraction of different metals in the wastewater (waste liquid), have the advantages of high instantaneity, high degree of automation, good accuracy, good separation effect, wide application range and the like, and compared with the existing control method and technology, the system reduces the manual intervention, improves the working efficiency, is suitable for various industrial processes requiring metal ion separation, such as chemical industry, electroplating, smelting, garbage treatment, water treatment, medicine, food processing and other fields, and has great significance.
A control method and system for the continuous ion exchange unit for selectively separating metal ions features that the control method and system are used to simultaneously integrate the advantages of continuous ion exchange unit and ion exchange resin selectivity, and can high-effectively and automatically complete the separation and extraction of different metals in waste water.
Wherein, the field detection module includes: the system comprises a pressure field detection module, a pH field detection module, a TDS field detection module, a flow field detection module, a liquid level field detection module, a temperature field detection module and an ion concentration field detection module, wherein the pressure field detection module, the pH field detection module, the TDS field detection module, the flow field detection module, the liquid level field detection module, the temperature field detection module and the ion concentration field detection module are used for collecting various current parameters and device number data and sending the current parameters and device number data to an automatic control platform;
The automatic control platform is used for comparing the color number value with the color standard value according to the color analysis data and the monitoring value of the color analysis module, and then sending an instruction signal to the equipment operation execution module according to the equipment number data; meanwhile, the system is also used for obtaining an abnormal coefficient according to the monitored value and the operation parameter and sending the abnormal coefficient to an abnormal alarm module;
The intelligent learning module is used for receiving, recording, storing and analyzing the color and operation data of all the automatic control platforms, comparing and learning all the data with the optimal data, recording the optimal operation scheme at the moment and feeding back the optimal operation scheme to the automatic control platforms;
The abnormality alarm module is used for carrying out abnormality alarm processing according to the abnormality coefficient;
Wherein, the equipment operation execution module includes: the pump operation execution module and the valve operation execution module are used for operating various on-site devices according to the instruction of the automatic control platform.
The method is characterized in that the field detection module obtains real-time data in the running process of the resin column, and the specific process is as follows:
the pressure field detection module: the pressure value of all the resin columns is detected in real time;
And a pH field detection module: the pH value of adsorption water inlet (liquid inlet), regeneration washing water outlet and transformation washing water outlet is detected in real time;
TDS field detection module: the method is used for detecting the TDS value of the washing effluent after water (liquid) is absorbed in real time;
flow field detection module: the flow value of adsorption water inlet (liquid inlet), regeneration acid inlet and conversion alkali inlet is detected in real time;
The liquid level field detection module: the liquid level value of the liquid storage tank after being used for detecting the water inlet (liquid inlet) storage tank, the regenerated liquid storage tank, the conversion liquid storage tank and the exchange (adsorption) liquid storage tank in real time;
And the temperature field detection module is used for: the device is used for detecting the temperature values of the liquid in the water inlet (liquid inlet) storage tank, the regenerated liquid storage tank, the conversion liquid storage tank and the liquid storage tank after exchange (adsorption) in real time;
Ion concentration on-site detection module: the method is used for detecting the metal ion concentration of water (liquid) in the selective separation column in the processes of water inlet (liquid inlet), liquid after exchange (adsorption) and the middle.
The automatic control platform is characterized in that the specific process is as follows:
According to the required technological requirements and operation flow, a PLC (programmable logic controller) or a DCS (distributed control system) is utilized, the PLC or the DCS performs logic comparison and intelligent judgment on the acquired data and standard numerical values according to the preset operation flow and technological parameters, and instructions are sent to an equipment operation execution module, an abnormality alarm module and an intelligent learning module according to the preset program.
The system is characterized in that the abnormality alarm module comprises the following specific processes:
Comparing the anomaly coefficient with a preset anomaly threshold, wherein the anomaly threshold comprises
Primary anomaly threshold value, secondary anomaly threshold value:
If the anomaly coefficient is greater than the second-level anomaly threshold, ring alarm is carried out and liquid feeding of the relevant process section is stopped;
If the first-level abnormal threshold value is smaller than or equal to the abnormal coefficient and smaller than or equal to the second-level abnormal threshold value, ring alarm is carried out;
If the anomaly coefficient is less than the first-level anomaly threshold value, prompting is performed on a display screen of the control system, and no operation is performed.
The device is characterized in that the device operates the execution module, and the specific process is as follows:
Operating the field process equipment according to the work instruction of the automatic control platform, comprising: various conveying pumps are started and stopped, and operating devices such as valves are opened and closed.
The intelligent learning module is characterized in that the specific process is as follows:
The color and operation data of all the automatic control platforms are received, recorded, stored and analyzed, all the data and the optimal data are subjected to comparison learning and recording, and the optimal operation scheme at the moment is fed back to the automatic control platforms.
The control method and the control system for the continuous ion exchange device for selectively separating metal ions can achieve the following beneficial effects:
1. Realizes the continuous input and output of the solution and the exchange separation of metal ions: by adopting a continuous operation mode, the system can realize continuous input of the solution to be treated and continuous output of the treated solution, and greatly improves the production efficiency.
2. Improving the accurate control capability: through the flow and the ion concentration of real-time supervision solution to the action of real-time adjustment pump and valve, this system can realize the treatment process of accurate control solution, has guaranteed product quality.
3. Stability and safety are enhanced: real-time detection is realized through the on-line detector, so that problems can be found and processed in time, and the stability and safety of the production process are ensured. In addition, the actions of the pump and the valve are controlled through a preset program, so that the risk of manual operation is reduced.
4. The cost and labor intensity are reduced: manual operation is reduced in an automatic control mode, and cost and labor intensity are reduced. Meanwhile, the consumption of waste water, acid and alkali generated in the operation process of the traditional ion exchange device is reduced, the production cost is greatly saved, and the risk of environmental pollution is reduced.
5. The application range is wide: the system is suitable for the fields of chemical industry, electroplating, smelting, garbage treatment, water treatment, medicine, food processing and the like, can be widely applied, and has great significance.
In summary, the control method and the control system of the continuous ion exchange device for selectively separating metal ions have the advantages of high efficiency, high precision, high stability, high safety, low cost, low labor intensity, wide application range, easy installation and maintenance, high reliability and the like, and can provide an efficient and accurate solution for separating and controlling metal ions through exchange (adsorption) in the fields of chemical industry, electroplating, smelting, garbage treatment, water treatment, medicine, food processing and the like.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other embodiments and drawings thereof can be obtained from the embodiments shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram illustrating the technical scheme and implementation process of the present invention.
Claims (6)
1. A control method and system for the continuous ion exchange unit for selectively separating metal ions features that the control method and system are used to simultaneously integrate the advantages of continuous ion exchange unit and ion exchange resin selectivity, and can high-effectively and automatically complete the separation and extraction of different metals in waste water. Wherein, the field detection module includes: the system comprises a pressure field detection module, a pH field detection module, a TDS field detection module, a flow field detection module, a liquid level field detection module, a temperature field detection module and an ion concentration field detection module, wherein the pressure field detection module, the pH field detection module, the TDS field detection module, the flow field detection module, the liquid level field detection module, the temperature field detection module and the ion concentration field detection module are used for collecting various current parameters and device number data and sending the current parameters and device number data to an automatic control platform; the automatic control platform is used for comparing the color number value with the color standard value according to the color analysis data and the monitoring value of the color analysis module, and then sending an instruction signal to the equipment operation execution module according to the equipment number data; meanwhile, the system is also used for obtaining an abnormal coefficient according to the monitored value and the operation parameter and sending the abnormal coefficient to an abnormal alarm module; the intelligent learning module is used for receiving, recording, storing and analyzing the color and operation data of all the automatic control platforms, comparing and learning all the data with the optimal data, recording the optimal operation scheme at the moment and feeding back the optimal operation scheme to the automatic control platforms; the abnormality alarm module is used for carrying out abnormality alarm processing according to the abnormality coefficient; wherein, the equipment operation execution module includes: the pump operation execution module and the valve operation execution module are used for operating various on-site devices according to the instruction of the automatic control platform.
2. The control method and control system for a continuous ion exchange apparatus for selective separation of metal ions according to claim 1, wherein the on-site detection module obtains real-time data during the operation of the resin column, and the specific process is as follows:
the pressure field detection module: the pressure value of all the resin columns is detected in real time;
And a pH field detection module: the pH value of adsorption water inlet (liquid inlet), regeneration washing water outlet and transformation washing water outlet is detected in real time;
TDS field detection module: the method is used for detecting the TDS value of the washing effluent after water (liquid) is absorbed in real time;
flow field detection module: the flow value of adsorption water inlet (liquid inlet), regeneration acid inlet and conversion alkali inlet is detected in real time;
The liquid level field detection module: the liquid level value of the liquid storage tank after being used for detecting the water inlet (liquid inlet) storage tank, the regenerated liquid storage tank, the conversion liquid storage tank and the exchange (adsorption) liquid storage tank in real time;
And the temperature field detection module is used for: the device is used for detecting the temperature values of the liquid in the water inlet (liquid inlet) storage tank, the regenerated liquid storage tank, the conversion liquid storage tank and the liquid storage tank after exchange (adsorption) in real time;
Ion concentration on-site detection module: the method is used for detecting the metal ion concentration of water (liquid) in the selective separation column in the processes of water inlet (liquid inlet), liquid after exchange (adsorption) and the middle.
3. The control method and system for a continuous ion exchange apparatus for selective separation of metal ions according to claim 1, wherein the automatic control platform comprises the following specific processes:
According to the required technological requirements and operation flow, a PLC (programmable logic controller) or a DCS (distributed control system) is utilized, the PLC or the DCS performs logic comparison and intelligent judgment on the acquired data and standard numerical values according to the preset operation flow and technological parameters, and instructions are sent to an equipment operation execution module, an abnormality alarm module and an intelligent learning module according to the preset program.
4. The control method and system for a continuous ion exchange apparatus for selective separation of metal ions according to claim 1, wherein the abnormality alarm module comprises the following specific processes:
Comparing the anomaly coefficient with a preset anomaly threshold, wherein the anomaly threshold comprises
Primary anomaly threshold value, secondary anomaly threshold value:
If the anomaly coefficient is greater than the second-level anomaly threshold, ring alarm is carried out and liquid feeding of the relevant process section is stopped;
If the first-level abnormal threshold value is smaller than or equal to the abnormal coefficient and smaller than or equal to the second-level abnormal threshold value, ring alarm is carried out;
If the anomaly coefficient is less than the first-level anomaly threshold value, prompting is performed on a display screen of the control system, and no operation is performed.
5. The control method and control system for a continuous ion exchange apparatus for selective separation of metal ions according to claim 1, wherein the device operation execution module comprises the following specific processes:
Operating the field process equipment according to the work instruction of the automatic control platform, comprising: various conveying pumps are started and stopped, and operating devices such as valves are opened and closed.
6. The control method and control system for a continuous ion exchange device for selective separation of metal ions according to claim 1, wherein the intelligent learning module comprises the following specific processes:
The color and operation data of all the automatic control platforms are received, recorded, stored and analyzed, all the data and the optimal data are subjected to comparison learning and recording, and the optimal operation scheme at the moment is fed back to the automatic control platforms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311076921.1A CN118122393A (en) | 2023-08-25 | 2023-08-25 | Control method and control system for continuous ion exchange device for selective separation of metal ions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311076921.1A CN118122393A (en) | 2023-08-25 | 2023-08-25 | Control method and control system for continuous ion exchange device for selective separation of metal ions |
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| CN202311076921.1A Pending CN118122393A (en) | 2023-08-25 | 2023-08-25 | Control method and control system for continuous ion exchange device for selective separation of metal ions |
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