16 results about "Electrochemical engineering" patented technology

The invention relates to the field of electrochemical engineering, and discloses a seawater electrolysis chlorine production electrode life prediction method and equipment, and the method comprises the steps: collecting electrode interface electrochemical characteristics, operation environment parameters and material microstructure degradation data synchronously through a multi-channel electrochemical sensing array, an online water quality monitoring module and a microstructure evolution monitoring unit; and constructing a high-dimensional feature vector space, inputting a multi-scale dynamic coupling neural network model, and combining a physical constraint loss function and an online self-updating mechanism to realize high-precision prediction of residual life and performance inflection points. The system comprises a sensing array, a water quality monitoring module, a microstructure scanning unit, a central data processing platform, a neural network operation cluster and a human-computer interaction interface. According to the method, through cross-scale data fusion and physical interpretable modeling, the prediction error is controlled within 5%, inflection point early warning is advanced by more than 200 hours, a maintenance strategy and a parameter optimization suggestion are output, the service life of the electrode is remarkably prolonged, and the operation reliability of the system is remarkably improved.

The present application relates to the organic wastewater and greenhouse gas carbon dioxide resource utilization, biological energy and biological electrochemical engineering cross technical field, disclose a kind of system and method for preparing middle chain fatty acid and sustainable aviation fuel in cooperation, system with organic wastewater as carbon source and electron donor, short-chain organic acid is converted into middle chain fatty acid by anaerobic microorganism carbon chain extension reaction, and is separated in situ by liquid membrane extraction and enriched;Enriched product is introduced into microbial electrosynthesis reactor, and further carbon chain extension is carried out by anode Kolbe electrolysis catalysis, and C10-C14 sustainable aviation fuel is prepared;Carbon dioxide is used as carbon source in cathode, and is converted into acetic acid by microbial catalysis, and carbon chain extension is carried out again by co-fermentation with organic wastewater.The present application realizes the synergic integration of organic wastewater treatment, carbon dioxide resource utilization and high value-added fuel preparation, and has high resource utilization degree, high carbon utilization efficiency and significant environmental benefits.

The invention discloses an efficient and uniform gas distribution stirring device and process for an electroplating bath. Relates to the technical field of metal surface treatment and electrochemical engineering and comprises a stirring device body, an air inlet is formed in one side of the stirring device body, a polymeric membrane is arranged on the stirring device body, a plurality of membrane holes are formed in the surface of the polymeric membrane, and a one-way flow control structure is arranged in the stirring device body. The inner space of the stirring device body is divided into an intra-cavity area and an intra-membrane area through the one-way flow control structure, the intra-cavity area is arranged to be a cavity from the air inlet to the one-way flow control structure, and the intra-membrane area is the space between the outlet of the one-way flow control structure and the membrane holes in the surface of the polymeric membrane. According to the efficient and uniform gas distribution stirring device and process for the electroplating bath, the efficient and uniform gas distribution stirring device is installed at the bottom of the electroplating bath, high-pressure gas is sprayed out from the tiny orifices to form microbubbles, the formed microbubbles can improve flow field distribution in the electroplating bath, uniform distribution of a solution in the electroplating bath is guaranteed, and the electroplating efficiency is improved.

The invention provides a ferrous-containing waste acid electrolytic regeneration and hydrogen production method, and relates to the technical field of industrial waste liquid resourceful treatment and electrochemical engineering. According to the technical scheme, the method comprises the following steps: taking the ferrous waste acid as an electrolyte, controlling the concentration of ferrous ions to be 0.5-3.0 mol / L, and controlling the total content of impurities to be less than or equal to 15wt.%; an automatic acid adding system is adopted, the acid adding rate is dynamically adjusted according to the pH value monitored in real time and a current signal, and the pH fluctuation in the electrolysis process does not exceed + / -15% of an initial set value. Under the conditions that the temperature is 35-85 DEG C and the current density is 200-500 A / m < 2 >, metal iron or iron alloy with the purity being larger than or equal to 99.94 wt.% can be obtained through the cathode, meanwhile, hydrogen with the purity being larger than or equal to 99.96% is separated out, the current efficiency is larger than or equal to 92%, and the unit energy consumption is smaller than or equal to 3.2 kWh / kg. The method has the advantages of stable operation, low energy consumption, high product purity and environmental friendliness, and is suitable for industrial popularization and application.

The invention belongs to the technical field of electrochemical engineering, and relates to an integrated electrochemical treatment system for removing stable metal complexes, which is characterized in that an inlet of a reverse osmosis pretreatment unit is communicated with original wastewater, and an outlet of the reverse osmosis pretreatment unit is communicated with an inlet of an electrocatalytic oxidation module; an outlet of the electrocatalytic oxidation module is communicated with an inlet of the solid-liquid separation unit, an outlet of the solid-liquid separation unit is communicated with an inlet of the adsorption purification unit, and an outlet of the adsorption purification unit is communicated with an external discharge port; the PLC system is electrically connected with the reverse osmosis pretreatment unit, the electrocatalytic oxidation module, the solid-liquid separation unit and the adsorption purification unit respectively; the electrocatalytic oxidation module is communicated with the induced crystallization module, the electrocatalytic oxidation module is electrically connected with the direct-current power supply device, and the electrocatalytic oxidation module is communicated with the auxiliary medicament adding unit; according to the invention, organic ligands are thoroughly destroyed and free metal ions are separated and removed through a multi-unit synergistic effect, so that high-efficiency purification and up-to-standard discharge of wastewater are realized.

The invention relates to the technical field of electrochemical engineering wastewater treatment and resource recovery. The invention discloses a preparation method of alkali metal organic salt mediated porous carbon, the prepared porous carbon and application of the prepared porous carbon in electro-desalting and lithium extraction. The preparation method comprises the following steps that a mixture containing ethylenediamine tetraacetic acid dialkali metal salt and a modifying agent is calcined and subjected to acid pickling under the protective atmosphere, and the catalyst is obtained, and the modifying agent comprises nitrate. According to the preparation method of the porous carbon based on mediation of the alkali metal organic salt, the dependence on highly corrosive activators (such as KOH, H3PO4 and the like) in the traditional process is avoided, and the environmental friendliness and the operation safety of the preparation process are remarkably improved. The method is simple in preparation process, environment-friendly, low in cost and excellent in product performance, fresh water production and strategic resource extraction can be synchronously realized, secondary pollution is hardly generated in the whole preparation process, and the method is suitable for large-scale production and has a good application prospect.

The invention belongs to the technical field of electrochemical engineering, and particularly relates to a method for testing the infiltration angle of molten lithium on the surface of an inorganic solid electrolyte ceramic diaphragm. The method comprises the following steps: firstly preparing an inorganic solid electrolyte ceramic diaphragm, then adhering molten lithium liquid drops to the surface of the inorganic solid electrolyte ceramic diaphragm in a friction infiltration mode, and after the molten lithium is cooled to room temperature and solidified, performing optical photographing to obtain the inorganic solid electrolyte ceramic diaphragm. And testing and analyzing the infiltration angle of molten lithium on the surface of the inorganic solid electrolyte ceramic diaphragm. According to the method, quantitative analysis on the surface microstructure characteristic and the lithium affinity of the inorganic solid electrolyte ceramic diaphragm is realized, expensive special equipment such as an infiltration angle measuring instrument is not needed, the test process is simple, the operability is high, and the method is particularly suitable for a solid-state battery system which takes metal lithium as a negative electrode and oxide inorganic solid electrolyte ceramic as the diaphragm.

The invention discloses a high-concentration sodium hypochlorite solution generator and a control method, and belongs to the technical field of electrochemical engineering. The integrated gas-liquid separation and analysis manifold is hermetically connected to a liquid and gas mixture outlet of the electrolytic cell; the upper part of the manifold is provided with a gas outlet, and the lower part is provided with a liquid outlet; an information capture chamber having a fixed volume and connected to the gas outlet of the manifold; the sensing system comprises a hydrogen mass flow meter, a direct current sensor and an outlet fluid flow meter; the hydrogen mass flow meter is mounted in the information capturing cavity, the direct current sensor is arranged on a circuit for supplying power to the electrolytic tank, and the outlet liquid flow meter is mounted on a product output pipeline led out from a liquid outlet of the manifold; according to the invention, a concentration monitoring system which is based on physical quantity measurement and has strong anti-interference capability is established.

The invention relates to the field of metallurgy and electrochemical engineering, and discloses a calcium molten salt electrolysis zero-carbon emission method and system.The method comprises the steps that the impurity concentration of molten salt is monitored in real time through multispectral online analysis; combining the three-dimensional temperature field data to drive the electrolytic process digital twin model, and generating a purification and temperature control instruction; removing impurities in situ by using a high-frequency electric field and a microporous ceramic filter layer; precise regulation and control of a temperature field are realized through partitioned electromagnetic induction heating; and full-process zero-carbon operation is realized based on a renewable energy power supply system. According to the system, millisecond-level identification and quantification of fused salt impurities are realized through multispectral online analysis; the impurity concentration and temperature field data are converted into executable process regulation and control instructions by utilizing a digital twin model, extensive adjustment depending on experience of operators is replaced, and the automation and intelligence level of the electrolysis process is remarkably improved; the fused salt in-situ purification device synchronously completes impurity removal in the electrolysis process, and productivity loss and energy consumption increase caused by shutdown slag removal are avoided.

The invention belongs to the field of electrochemical engineering devices, and discloses a modular electrochemical reactor. In the device, at least one reactor unit is included. Each reactor unit comprises a gas runner plate, a cathode, a cathode runner plate, a diaphragm and an anode which are sequentially stacked; liquid cooling plates are stacked on one side, back to the cathode, of the gas flow channel plate or / and one side, back to the diaphragm, of the anode respectively, and cooling flow channels are formed in the liquid cooling plates; a gas distribution flow field is arranged on one side surface, facing the cathode, of the gas runner plate; the cathode runner plate is provided with a liquid runner, and liquid in the liquid runner is in contact with the cathode and the diaphragm at the same time. The device can synergistically solve the problems of rapid removal of products, efficient management of reaction heat and low-energy-consumption stable amplification in principle, and is compact in structure.

The utility model relates to the technical field of electrochemical engineering, and discloses a closed anode mechanism which comprises an electrophoresis cell, a first sliding rail and a second sliding rail are arranged in the electrophoresis cell, a sliding block is arranged on the first sliding rail in a sliding mode, a locking mechanism used for locking the sliding block and the first sliding rail is arranged between the sliding block and the first sliding rail, and the side wall of the sliding block is connected with a connecting rod. A first pipe sleeve is connected to the tail end of the connecting rod, a second pipe sleeve is buckled on the first pipe sleeve, an anode pipe is installed between the first pipe sleeve and the second pipe sleeve, a base used for supporting the anode pipe is arranged at the bottom of the anode pipe, a sliding rod is connected to the base, and the tail end of the sliding rod is installed on the second sliding rail in a sliding mode. Through sliding rail linkage and an eccentric wheel locking mechanism, the distance between the anode tubes can be adjusted to adapt to different working conditions, electric field distribution is optimized, the electrolysis efficiency is improved, a buckle positioning structure is adopted to replace traditional multi-bolt connection, the installation and maintenance process is simplified, and a spring elastic supporting structure in the base can always play a role in supporting the bottoms of the anode tubes.

The invention discloses a treatment system and method for photoelectrocatalytic degradation of degradation-resistant organic matter wastewater, and belongs to the field of environmental electrochemical engineering. The system comprises a pretreatment unit, a photoelectric catalytic reaction core unit and a post-treatment unit. A core unit innovatively adopts a three-dimensional porous composite photo-anode and a gas diffusion cathode, so that the problems that a catalyst is easy to lose and inactivate due to pollution and the utilization efficiency of the catalyst and light is low are effectively solved. According to the treatment method, after the pH value of the wastewater is regulated and controlled, under illumination or additional bias voltage, hydroxyl radicals are generated by cooperating with photoelectric oxidation, and a Fenton-like reaction is initiated by in-situ production of hydrogen peroxide by a cathode, so that high-efficiency removal of refractory organic matters is realized. The process technology is simple, the system operation is stable, the energy consumption is low, the secondary pollution is less, and the method is suitable for pretreatment or advanced treatment of Baijiu with different concentrations and different turbidity or other wastewater.

The present application relates to the field of electrochemical engineering, and specifically discloses a kind of PEM electrolytic water hydrogen production system energy efficiency online monitoring method, comprising: by full working condition permeation characteristic experiment, the physical residual network soft measurement model with Fick diffusion law and Henry law hard constraint is constructed, it is converted into.onnx format and deployed to edge gateway;Secondly, real-time acquisition multi-channel working condition signal, after filtering, down-sampling and normalization processing form standardized input vector, online output transient hydrogen permeation flux;Again, according to Faraday's law, hydrogen permeation flux is equivalent to virtual current component, and the effective electrolysis current of real participation electrolysis is obtained after deduction;Subsequently, an external closed loop calibration mechanism is established, and the true value is obtained by a micro gas chromatograph, and only the model output bias is adjusted to correct drift;Finally, based on the effective electrolysis current calculation theoretical hydrogen production rate, combined with the measured value, the real Faraday efficiency is obtained by eliminating the interference of permeation;Real-time monitoring of the real energy efficiency of PEM electrolytic water hydrogen production system is realized.

The invention belongs to the technical field of electrochemical engineering and material surfaces, and particularly relates to a coating for a metal electrolytic cell anode and a coating method.The coating is composed of, by mass, 30-50 parts of rare earth oxide, the rare earth oxide is a mixture of samarium oxide and erbium oxide, and the mass ratio of samarium oxide to erbium oxide is 3-5: 1; 4 to 10 parts of nano diamond powder; 7 to 16 parts of amorphous zirconium boride particles; 5 to 12 parts of nano yttrium oxide stabilized zirconium oxide particles; 10 to 20 parts of an organic silicon resin binder; 1-4 parts of graphene quantum dots; 2 to 6 parts of a fullerene-C < 60 > derivative, wherein the fullerene-C < 60 > derivative is C60 subjected to amino functionalization; the thickness of each hexagonal boron nitride nanosheet is 2-5 layers, the transverse size of each hexagonal boron nitride nanosheet is 200-500 nm, and the surface of each hexagonal boron nitride nanosheet is subjected to hydroxylation treatment; 0.5 to 2.0 parts of a composite dispersant; and the balance of deionized water.

The application discloses a device and method for preparing high-purity large-particle magnesium hydroxide by continuously electrolyzing seawater, and relates to the fields of comprehensive utilization of seawater resources and electrochemistry engineering.The application organically integrates continuous electrolysis extraction of seawater, electrochemical in-situ precipitation and crystallization kinetics regulation, and creatively combines ion directional migration, external circulation and heat exchange, multi-parameter crystallization regulation and crystal concentration dynamic balance, etc., so as to realize controllable growth and continuous separation of magnesium hydroxide crystallization by taking seawater as raw material, without adding an alkaline precipitant, and prepare the magnesium hydroxide with purity > 99.5% and D 50 ≥ 10 mu m, solve the problems of poor controllability of product quality, electrode passivation and great environmental protection pressure in the traditional process, and adapt to green electricity consumption, so as to provide a new path for high-value utilization of seawater magnesium resources.

The application belongs to the technical field of electrochemical engineering, and discloses a droplet microfluidic electrochemical reactor for a two-phase system, wherein the surface of the flow channel plate of the working electrode chamber is engraved with a cross-shaped microchannel, four ports of the cross-shaped microchannel are respectively two continuous phase inlets, one dispersed phase inlet and one liquid outlet, the surface of the cross-shaped microchannel is covered with an inorganic hydrophilic film layer, the aqueous phase fluid is taken as the continuous phase and is injected from the two continuous phase inlets, and the organic phase fluid is taken as the dispersed phase and is injected from the dispersed phase inlet; due to the extremely hydrophilic state of the surface of the cross-shaped microchannel, the aqueous phase continuous phase is preferentially wetted and constructs a physically isolated aqueous phase liquid film, the organic dispersed phase is subjected to the symmetrical shearing of the aqueous phase continuous phase, an oil-in-water (O / W) discrete droplet flow type is generated, and therefore the contact area of the two phases can be increased at the microscale, the current path can be effectively shortened to reduce the ohmic loss, and the low-voltage stable operation of the system can be ensured.