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CN-121974448-A - Electrochemical reactor and method based on dynamic regulation and control of flow field and electric field

CN121974448ACN 121974448 ACN121974448 ACN 121974448ACN-121974448-A

Abstract

The invention discloses an electrochemical reactor and a method based on dynamic regulation and control of a flow field and an electric field, which relate to the field of electrochemical water treatment and comprise a tool main body, electrolytic tank pipes and a regulation and control part, wherein two water inlet pipes and water outlet pipes are symmetrically arranged in the tool main body, the number of the electrolytic tank pipes is a plurality of the electrolytic tank pipes and are used for carrying out electrochemical reaction treatment through an electric field and flow field control system, at least one pair of anodes and cathodes are packaged in each electrolytic tank pipe, the electrolytic tank pipes are uniformly arranged between the water inlet pipes and the water outlet pipes, and the water inlet pipes and the water outlet pipes are communicated with the electrolytic tank pipes.

Inventors

  • WANG YIDA
  • Weng Weifei

Assignees

  • 杭州长鸿环保科技有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (10)

  1. 1. The utility model provides an electrochemical reactor based on flow field and electric field dynamic regulation and control, its characterized in that, including frock main part, electrolysis trough pipe and regulation and control part, the inside symmetry of frock main part is provided with two water inlet pipes and outlet pipe, electrolysis trough pipe quantity is a plurality of for carry out electrochemical reaction through electric field and flow field control system and handle, every electrolysis trough pipe inside encapsulation has at least a pair of positive pole and negative pole, electrolysis trough pipe evenly sets up between water inlet pipe and outlet pipe, water inlet pipe and outlet pipe all are linked together with electrolysis trough pipe, regulation and control part installs the surface at electrolysis trough pipe, regulation and control part lower grade is deployed and is had the submodule, includes: The acquisition unit is used for acquiring flow field, electric field, water quality and electrode state parameters in real time through the sensor; the fluid simulation modeling module is used for constructing a fluid simulation model according to the flow and pressure data in the acquired flow field parameters; the electric field simulation modeling module is used for constructing an electric field distribution simulation model based on current and voltage data in the acquired electric field parameters and physical property parameters of the electrode; the regulation and control analysis module is used for pre-constructing a simulation identification model, taking the self-processing capacity attribute of each current electrolytic cell tube, the processed water quality data change and the electrode state information as input, and respectively outputting current density and voltage adjustment parameters and flow and pressure adjustment parameters of water flow of each electrolytic cell tube in the next period by the model; The simulation verification module is used for inputting the current density and voltage adjustment parameters into the electric field simulation modeling module for simulation to generate power adjustment feedback; And the evaluation execution module is used for comprehensively evaluating each adjustment parameter, generating an optimal multi-period execution track and driving the field device to execute.
  2. 2. The electrochemical reactor based on dynamic regulation and control of a flow field and an electric field according to claim 1, wherein the collection unit is arranged at a lower stage, and the submodule comprises a fluid collection module, an electric field collection module and a water quality collection module, wherein: The fluid collection module is used for collecting inlet and outlet flow in each electrolytic tank pipe and pressure data of the inside or the inlet and the outlet of the pipe section in real time; The electric field acquisition module is used for acquiring working current and voltage of each electrolytic cell tube and cell voltage data between electrodes in real time; the water quality acquisition module is used for acquiring water quality data in real time and electrode surface state information through water quality sensing components deployed in the electrolytic cell tubes or at the inlet and the outlet.
  3. 3. The electrochemical reactor based on dynamic regulation and control of flow fields and electric fields according to claim 1, wherein the working logic of the fluid simulation modeling module is: Receiving inlet and outlet flow and pressure data of each electrolytic cell pipe from the acquisition unit in real time, and performing filtering and validity verification; based on the actual physical layout, pipeline size and connection relation of the electrolytic cell pipe array, defining a simulation calculated geometric domain, and inputting the acquired real-time flow and pressure data as dynamic boundary conditions; simulating steady-state or transient flow field distribution, flow velocity profile and pressure field of the electrolytic tank pipe and the connecting pipeline in the geometric domain; From the simulation results, the average flow velocity, hydraulic residence time, wall shear force, and flow field uniformity index in each cell tube were extracted.
  4. 4. The electrochemical reactor based on dynamic regulation and control of a flow field and an electric field according to claim 1, wherein the working logic of the electric field simulation modeling module is as follows: receiving working current, voltage and cell voltage data of each electrolytic cell tube from the acquisition unit in real time, and integrating the geometric dimension, arrangement mode and material conductivity parameters of electrodes in the electrolytic cell tube; based on the actual structure of the electrolytic cell tube, constructing a simulation domain containing electrodes and electrolyte solution, setting the acquired voltage or current data as electric field boundary conditions, and correlating the conductivity attribute of the electrolyte solution with real-time water quality data; calculating potential distribution, electric field intensity distribution and current density distribution in a simulation domain by solving maxwell's equations; And (3) correlating the calculated local current density distribution with preset electrode reaction kinetic parameters so as to evaluate and acquire electrochemical reaction rates, overpotential and side reaction tendencies of different areas of the surface of each electrode.
  5. 5. The electrochemical reactor based on dynamic regulation and control of flow fields and electric fields according to claim 1, wherein the construction process of the simulation identification model in the regulation and control analysis module is as follows: collecting a time sequence data set of each electrolytic tank pipe in a historical operation period, wherein the data set comprises input characteristics and target labels; Selecting a deep neural network as a model infrastructure, wherein the network comprises a shared feature extraction layer and is divided into two parallel task specific branch networks; and performing supervised training on the constructed network model by using the time sequence data set, wherein the loss function is a weighted mean square error between the predicted values of the two task branches and the real labels.
  6. 6. The electrochemical reactor based on dynamic regulation and control of a flow field and an electric field according to claim 1, wherein the evaluation execution module is arranged at a lower level, the submodule comprises an adjustment evaluation module, a track planning module and a dynamic execution module, and the adjustment evaluation module is interactively connected with the track planning module and the dynamic execution module through a wireless network, wherein: The adjustment evaluation module is used for evaluating the power adjustment feedback and the fluid adjustment feedback of the simulation verification module by combining a plurality of preset performance indexes including the energy consumption index, respectively calculating adjustment costs of all adjustments, and selecting a feedback scheme with the minimum adjustment cost as an execution basis; The track planning module is used for integrating the adjustment feedback results of a plurality of continuous regulation and control periods to generate a continuous adjustment track of the combination of the power adjustment parameters and the fluid adjustment parameters of each electrolytic tank tube in the appointed period number in the future; And the dynamic execution module is used for transmitting the continuous adjustment track to the corresponding specified electrolytic cell pipe and driving the power supply and the fluid control system to execute adjustment.
  7. 7. The electrochemical reactor based on dynamic regulation and control of flow field and electric field according to claim 6, wherein the calculation formula of the adjustment cost of each adjustment in the adjustment evaluation module is: ; In the formula, Representing the cost of the overall adjustment, Representing the predicted energy consumption of the system after adjustment, Representing a preset minimum energy consumption threshold, Representing a preset maximum energy consumption threshold, Representing the adjusted predicted contaminant removal rate, Representing the preset target removal rate of the wafer, Representing the adjusted predicted electrode loss rate, Representing the reference loss rate of the sample, Representing the maximum allowable loss rate and, Representing the magnitude of the adjustment of the current or voltage parameter, Representing the magnitude of the adjustment of the flow or pressure parameter, Representing the maximum allowable adjustment range of the current or voltage system, Representing the maximum allowable adjustment range of the fluid control system, 、 、 、 And Representing the corresponding weight coefficients, respectively.
  8. 8. The electrochemical reactor based on dynamic regulation and control of a flow field and an electric field according to claim 1, wherein the acquisition unit is in interactive connection with the fluid simulation modeling module and the electric field simulation modeling module through a wireless network, the regulation and control analysis module is in interactive connection with the fluid simulation modeling module, the electric field simulation modeling module and the simulation verification module through a wireless network, and the simulation verification module is in interactive connection with the evaluation execution module through a wireless network.
  9. 9. Electrochemical reaction method based on dynamic regulation of flow field and electric field, said method being based on the implementation method of electrochemical reactor based on dynamic regulation of flow field and electric field according to any one of claims 1-8, characterized in that it comprises the following steps: step 1, collecting fluid flow and pressure data, input current and voltage data and data representing water quality in each sequentially arranged electrolytic tank tube in an electrochemical reactor in real time; Step 2, based on the collected flow and pressure data, constructing and updating a dynamic fluid simulation model describing the fluid distribution state in the reactor in real time; Step 3, in each regulation and control period, taking the inherent processing capacity attribute of each electrolytic tank pipe in the current period and the change trend of the processed water quality data as input, analyzing and calculating through a simulation recognition model, and respectively outputting current and voltage regulation recommended parameters and water flow and pressure regulation recommended parameters for each electrolytic tank pipe in the next period; Step 4, inputting the current and voltage adjustment recommended parameters into the dynamic electric field distribution simulation model to carry out simulation adjustment to obtain power adjustment feedback, inputting the flow and pressure adjustment recommended parameters into the dynamic fluid simulation model to carry out simulation adjustment to obtain fluid adjustment feedback; step 5, comparing the comprehensive adjustment cost corresponding to the power supply adjustment feedback and the fluid adjustment feedback, and selecting an adjustment scheme with the minimum adjustment cost as a final execution scheme of the current period; And 6, integrating final execution schemes of a plurality of continuous regulation and control periods, forming continuous regulation tracks of each electrolytic tank pipe on power supply parameters and fluid parameters in the specified period number in the future, and transmitting the regulation tracks to corresponding electrolytic tank pipe execution mechanisms to carry out real-time dynamic regulation and control.
  10. 10. The electrochemical reaction method based on dynamic regulation and control of flow field and electric field according to claim 9, wherein the adjustment track in step 6 is planned by using a model predictive control algorithm, and the planning process comprises: Taking the minimum total running cost of the system in a continuous period in the future as an optimization target, wherein the running cost is comprehensively calculated by the multiple evaluation indexes; When each regulation period starts, predicting and solving an optimal adjustment parameter sequence in a plurality of future regulation periods in a rolling way based on the latest system state and the dynamic simulation model; In the whole adjustment parameter sequence obtained by solving, only taking the optimal adjustment parameter corresponding to the first regulation and control period as an actual execution instruction of the current period; And when the next regulation and control period is entered, repeating the solving process, and carrying out prediction and rolling optimization again.

Description

Electrochemical reactor and method based on dynamic regulation and control of flow field and electric field Technical Field The invention relates to the technical field of electrochemical water treatment, in particular to an electrochemical reactor and a method based on dynamic regulation and control of a flow field and an electric field. Background Along with the increasing strictness of environmental protection regulations, the electrochemical technology has great potential in the fields of treating refractory organic matters, recycling heavy metals and the like due to the advantages of environmental protection, no need of adding chemical agents and the like. However, in practical industrial applications, particularly when treating wastewater with complex components and large fluctuations in flow rate or concentration, the treatment efficiency and operation stability of the reactor face serious challenges. The traditional electrochemical reactor generally adopts fixed or simple sectional operation parameters, is difficult to adapt to dynamically-changed water inlet conditions, and causes the problems of energy waste, electrode loss aggravation, substandard treatment effect and the like due to the coexistence of over-treatment and under-treatment. In the prior art, the independent adjustment of an electric field or a flow field is mostly focused, the cooperative overall consideration of the electric field, the flow field and the water quality is lacked, the overall optimization cannot be realized, the existing system is generally controlled based on a fixed threshold value or simple feedback, the impending water inlet fluctuation or reaction progress cannot be predicted and adjusted in advance, the control response is delayed, the system stability is poor, the systematic optimization and long-term planning are lacked, the continuous planning of a plurality of running periods in the future is lacked, frequent and severe parameter adjustment is easily caused, the equipment loss is increased, and the global optimization of long-term running energy consumption, efficiency and stability cannot be realized. Disclosure of Invention (One) solving the technical problems Aiming at the defects existing in the prior art, the invention provides an electrochemical reactor and a method based on dynamic regulation and control of a flow field and an electric field, which can effectively solve the problems in the prior art. (II) technical scheme In order to achieve the above purpose, the invention is realized by the following technical scheme: In a first aspect, the invention discloses an electrochemical reactor based on dynamic regulation and control of a flow field and an electric field, which comprises a tool main body, electrolytic tank pipes and a regulation and control component, wherein two water inlet pipes and two water outlet pipes are symmetrically arranged in the tool main body, the number of the electrolytic tank pipes is a plurality of the electrolytic tank pipes and are used for carrying out electrochemical reaction treatment through the electric field and the flow field control system, at least one pair of anodes and cathodes are packaged in each electrolytic tank pipe, the surfaces of the electrodes can be loaded with catalytic coatings, the electrolytic tank pipes are uniformly arranged between the water inlet pipes and the water outlet pipes, the water inlet pipes and the water outlet pipes are communicated with the electrolytic tank pipes, the regulation and control component is arranged on the surfaces of the electrolytic tank pipes, and sub-modules are arranged at the lower level of the regulation and control component, and the electrochemical reactor comprises: The acquisition unit is used for acquiring flow field, electric field, water quality and electrode state parameters in real time through the sensor and providing a data basis for the construction and intelligent regulation of a subsequent model; the fluid simulation modeling module is used for constructing a fluid simulation model reflecting flow field distribution, flow speed and pressure drop in the system according to the flow and pressure data in the acquired flow field parameters; The electric field simulation modeling module is used for constructing an electric field distribution simulation model reflecting electric field intensity distribution and current density distribution in the system based on current and voltage data in the acquired electric field parameters and physical property parameters of the electrodes, wherein when the model is constructed, the electrodes are regarded as domains with specific boundary conditions, and model parameters such as conductivity and double-layer capacitance can be dynamically calibrated according to electrode potential drift and impedance spectrum change data acquired by the acquisition unit so as to reflect the aging, pollution or passivation state of the electrodes; The system comprises a regulati