102results about How to "Reduce electrolysis energy consumption" patented technology

The invention discloses an electrochemical method for the hydrodechlorination of a chlorinated organic pollutant. The method comprises: adding the chlorinated organic pollutant into an alkaline solution so as to obtain electrolytic reaction liquid; and carrying out electrolytic reaction in a non-diaphragm electrolytic cell using a conductive material modified by palladium as a cathode and a chemically inert conductive material as an anode so as to obtain a fully dechlorinated compound. The electrochemical method for the hydrodechlorination of the chlorinated organic pollutant, provided by the invention, utilizes the palladium for catalysis, simultaneously realizes high current efficiency, high current density and low electrolytic voltage and does not use a diaphragm. The electrochemical method for the hydrodechlorination of the chlorinated organic pollutant not only can greatly reduce the usage quantity of the palladium catalyst and reduce the volume of the electrolytic cell, but also can simplify the structure of the electrolytic cell, reduce the cost of the electrolytic cell and reduce electrolytic energy consumption.

The invention relates to a rotating negative electrode scale scraping and removing device which comprises negative electrode conductive columns 1, negative electrode plates 2, a rotating shaft 6, positive electrode plates 7 and scrapers 8. The negative electrode conductive columns 1 are closely attached to the negative electrode plates 2. The negative electrode conductive columns 1, the negative electrode plates 2, the scrapers 8 and the positive electrode plates 7 are sequentially connected to the rotating shaft 6 in series. A central limiting and correcting block 3 is arranged between the scrapers 8 and the positive electrode plates 7. The negative electrode plates 2 rotate around the rotating shaft 6. A jackscrew 4 is arranged on one side of each negative electrode conductive column 1. Currents are guided into the negative electrode plates 2 by the negative electrode conductive columns 1. In the rotating process of the negative electrode plates 2, the scrapers 8 are closely attached to and scrap the surfaces of the negative electrode plates 2. The purpose of inputting currents to the rotating negative electrode plates without electric brushes is achieved, electrode intervals are easily decreased to the maximum degree, and the scale scraping and removing effects of the negative electrode plates are improved.

The invention provides a method for electrolytic synthesis of butanedioic acid and a fixed bed electrochemical reaction device. The method comprises the following steps: by taking a maleic anhydride solution with the mass concentration of 5-20% and a sulfuric acid solution with the mass concentration of 3-15% as an electrolyte, introducing the electrolyte into a circulating tank by virtue of a liquid storage tank; inputting the electrolyte into an electrolytic tank by virtue of a magnetic circulating pump; controlling the temperature of the electrolytic tank to be 30-80 DEG C and the current density to be 200-1000A/m<2>, and electrifying for electrolysis; after reaction, discharging the obtained reaction solution from a liquid outlet of a three-way valve, and performing cooling crystallization on the electrolyte, filtration and drying to obtain butanedioic acid; and recovering the filtrate after filtering out butanedioic acid, adding an appropriate amount of raw materials of maleic anhydride and concentrated sulfuric acid to re-prepare the filtrate into an electrolyte for cycle use. The device comprises the electrolytic tank, the liquid storage tank, the circulating tank, the heat exchanger and the magnetic circulating pump. The method and the device provided by the invention have the beneficial effects of improving the productivity and achieving energy conservation and high efficiency.

Belonging to the field of environment protection, the invention relates to an approach of deeply processing percolate of landfill of refuse field and other sewages. Through adjusting PH value of percolate, add iron salt and use electrobath with a water-fast anode to conduct electroanalysis. Adjust the PH value of percolate to neutrality, deposit iron ion and the deposited iron can be used circularly. After the treatment, CODcr chroma of supernatant is less than 250mg/L which can reach discharging standard grade 2 of percolate. It can reach grade 1 that chroma is less than 10 times and chroma of NH3-N is less than 10mg/L. The invention remarkably reduces electricity consumption and reaches the level of engineering application.

The invention provides a method for electrolysis reuse of alkaline etching waste liquid. The method comprises the following steps that (1) the alkaline etching waste liquid or mixed liquid of the alkaline etching waste liquid and a reducing agent serves as anode electrolyte to be added into an anode region, and the mixed liquid of the alkaline etching waste liquid and the reducing agent serves ascathode electrolyte to be added into a cathode region; (2) an electrolysis power supply is started for electrolysis operation, and metal copper is separated out on an electrolysis cathode; and (3) according to a specific alkaline etching process, ammonium chloride, ammonia, water and one or more of components contained in other alkaline etching liquid are added into anode liquid and/or cathode liquid after electrolysis operation in the step (2) to prepare regenerated alkaline etching sub-liquid capable of being reused on an alkaline etching production line. According to the method, the electrolysis copper separate-out efficiency can be improved, and the waste liquid can be prepared to form the regenerated alkaline etching sub-liquid capable of maintaining the ideal etching effect after electrolysis reuse.

The invention discloses an electrocatalytic oxidation-biochemical coupling method for treating high-salinity high-concentration organic wastewater and relates to the technical field of sewage treatment. The method comprises the following steps: pretreating high-salinity high-concentration organic wastewater and discharging first-stage organic wastewater; treating the first-stage organic wastewaterin an electrocatalytic oxidation mode and discharging second-stage organic wastewater; biochemically treating the second-stage organic wastewater until the second-stage organic wastewater reaches a standard and is discharged. According to the method disclosed by the invention, electrocatalytic oxidation and a biochemical treatment technology are coupled, so that high-efficient treatment on the high-salinity high-concentration organic wastewater is achieved; furthermore, in an electrocatalytic oxidation process, the characteristic that the concentration of chlorine ions in the high-salinity organic wastewater is high is fully utilized, high-efficient reclamation on the chlorine irons is achieved, and the chlorine ions are activated into chlorine activity free radicals when electrified to degrade pollutants.

The invention discloses a method for slotting an anode in the electrolytic aluminum industry. The technical scheme is that: the method comprises the following steps of: placing a die core plate consisting of a left part and a right part in an anode molding die sleeve; and after the anode is made into a block and molded, pulling the die core plate out from the two sides of the die sleeve by using a drive device. The slotting method has good effect, namely, irregularly-shaped slots of which middle parts are lower than tops at two ends can be reserved, and compared with straight slots, are more favorable for driving CO2 foams to quickly leave the bottom of the anode; and the slotting method also has the advantages of simple process, convenient use and raw material saving.

The invention relates to a continuous anode device for intelligent electrolytic baths and an application method thereof, belonging to the field of metallurgy. The continuous anode device for intelligent electrolytic baths comprises a continuous anode carbon block, an anode carbon block positioning push system, a continuous anode carbon block crawler-type displacement system, a slide power supply system and an intelligent control system. The application method comprises the following steps: (1) a continuous anode carbon block is installed; (2) the continuous anode carbon block is fixed to the continuous anode carbon block crawler-type displacement system to implement continuous movement; (3) when the crawler operates, the working anode carbon block is driven to move downwards, and the anode carbon block positioning push system can push a standby anode carbon block to the fixed position so as to be connected with the original carbon block; and (4) when the continuous anode carbon block moves downwards, the slide power supply system correspondingly moves upwards so as to implement the connection between the anode carbon block and the anode. The device implements the continuity of the aluminum electrolytic bath anodes, solves the problem of discontinuous anode replacement and stub generation at present, and lowers the cost of the aluminum electrolysis process.

The invention discloses an ozone electrolysis structure which comprises an anode piece and a cathode piece which are arranged at an interval, the anode piece is located at a water inlet end, the cathode piece is located at a water outlet end, and a main proton exchange membrane is arranged between the anode piece and the cathode piece; a water inlet hole is formed in the anode piece, a water through hole is formed in the main proton exchange membrane, and a bulge structure is arranged on the side surface of a water inlet side of the cathode piece. When the ozone electrolysis structure is usedfor preparing ozone water, incrustation accumulation on electrode surfaces can be avoided, the electrode service life is prolonged, the ozone preparation efficiency is improved, the electrolysis energy consumption is reduced, and the ozone electrolysis structure has the advantages of high ozone water concentration, low energy consumption and long service life.

The invention discloses a continuous pre-baked anode carbon block with a split type independent carbon bowl and ultra-long filling block structure. The continuous pre-baked anode carbon block comprises a carbon block body, wherein carbon bowl assembly connecting pits are formed in the carbon block body, carbon bowl assemblies are arranged in the carbon bowl assembly connecting pits, carbon bowls are arranged on the carbon bowl assemblies, mechanical steel claw connecting ring grooves are formed in the positions, at the bottoms of the carbon bowls, of the charcoal bowl assemblies, and ultra-long carbon bowl filling blocks are movably arranged in the parts, on the carbon bowl assemblies, of the carbon bowls. The continuous pre-baked anode carbon block cooperates with casting-mechanical steelclaws so that the continuous use of a pre-baked anode can be realized, the time for connecting a new anode carbon block is short, the labor intensity is low, the use is convenient, the filling rate of the continuous pre-baked anode carbon block is improved, the connection strength of the carbon block is improved, the whole resistance of the anode carbon block is reduced, the service life of the single carbon block is prolonged, the production cost is low, moreover, manufacturing, roasting, transportation and use of the carbon block body, the split type independent carbon bowls, and the ultra-long filling blocks are all simple, and the characteristics of being high in manufacturing finished product rate, low in expense is low, low in cost and the like are achieved.

The invention provides an integrated membrane electrode. The integrated membrane electrode comprises a porous composite membrane and a porous catalyst layer compounded with the porous composite membrane. Wherein the porous composite membrane contains inorganic powder, polysulfone and a support body, and can greatly improve the current density and reduce the electrolysis energy consumption on the basis of high mechanical strength and product gas purity. The porous catalyst layer contains polysulfone and a a catalyst, and has high catalytic activity and product selectivity. The invention also provides an integrated forming preparation method of the membrane electrode, which comprises the following steps: directly preparing the catalyst layer on the surface of an unformed liquid composite membrane blank, and preparing the integrated membrane electrode in one step by a phase inversion method, thereby greatly enhancing the stability of the membrane electrode.

The invention relates to a bipolar electrode plate for preparing metal aluminum by aluminum chloride electrolysis and a using method of the bipolar electrode plate, and belongs to the technical fieldof electrolytic aluminum. The bipolar electrode plate for preparing metal aluminum by aluminum chloride electrolysis comprises a bipolar electrode plate base block and an insulating block. The bipolarelectrode plate base block is divided into a cathode end and an anode end. In the bipolar electrode plate base block, the remaining periphery is provided with insulating blocks correspondingly exceptthe end surface of the cathode end and the end surface of the anode end. The width of the insulating block needs to comply with the following relation: (Rho<C>*h+2.15/D*S)<<Rho<L>*(b+h). According tothe bipolar electrode plate, the insulating block is connected to the bipolar electrode plate base block, and the width of the insulating block is defined, so that when the bipolar electrode plate for preparing the metal aluminum by aluminum chloride electrolysis, bypass current can be effectively reduced, current efficiency is improved, and the electrolytic energy consumption is reduced.

The invention relates to an electrolysis method and device for a self-cleaning carbon electrode, and belongs to the technical field of electrochemistry electrolysis. A periodic swerving electrolysis device is adopted and comprises an electrolytic cell, a periodic swerving controller and a direct-current power supply system, wherein the positive electrode and the negative electrode of the electrolytic cell are carbon electrodes, and the periodic swerving controller can be used for realizing the circular operations of electrifying, switching off, carrying out swerving electrification and switching off. The electrolysis method comprises the following steps of: 1) introducing materials into the electrolytic cell, wherein the electric conductivity of electrolysis material is more than 0.1S/m; 2) regulating the periodic swerving controller; and 3) electrifying to carry out electrolytic oxidation and reduction reaction. According to the method and the device disclosed by the invention, the carbon electrode can be cleaned by self in the electrolytic oxidation and reduction process, concentration polarization is lowered, the electrolysis efficiency is improved, the electrolysis energy consumption is lowered, and industrial implementation is easily carried out.

The invention relates to a method and a device for electrolysis of a self-cleaning composite graphite electrode, and belongs to the technical field of electrochemical electrolysis. The device is a periodic turning electrolyzer comprising an electrolysis bath, a periodic turning controller and a direct current supply system, wherein the positive electrode and the negative electrode are made of insoluble metal; a graphite or glass carbon complex pole is arranged in the middle; and the periodic turning controller realizes the circulating operations of power turn-on, power turn-off, turning power turn-on and power turn-off. The electrolysis method comprises the following steps: (1) materials are fed into the electrolysis bath, wherein the electric conductivity for the electrolyzed materials is larger than 0.1 S/m; (2) the periodic turning controller is adjusted; and (3) power is turned on to carry out electrolytic oxidation reduction reaction. The method and the device can realize self-cleaning of the electrode in the electrolytic oxidation reduction process, improve the electrolysis efficiency and reduce the electrolysis energy consumption and are easy for industrial implementation.

The invention discloses a method for decomposing rhodamine B wastewater. The method comprises steps as follows: firstly, rhodamine B wastewater is desilted through a grating and then heated to 10-60 DEG C, the pH is regulated to 2-7, filtration is performed after 1 h, a filtrate obtained after the filtration is an electrolyte, one of platinum sheet, iron, copper, gold, ruthenium, palladium, aluminum, graphite, lead and BDD (boron-doped diamond) electrodes is taken as an oxidation electrode, a saturated calomel electrode is taken as a reference electrode, oxidation is performed for 5 min underthe condition of oxidation voltage of 1.0-1.5 V, rhodamine B wastewater is subjected to an electropolymerization reaction, and precipitates are produced; an electrolyte obtained after an oxidation reaction is filtered by a 0.22 mu m filter membrane, and a clear liquid is obtained. Compared with other methods for decomposing rhodamine B, the method has the advantages that C-N bonds on ethyl of rhodamine B are broken to generate -NH2, electropolymerization is performed on the electrode, polyaniline-like products are produced, the degradation time can be greatly shortened and electrolysis energyconsumption can be greatly reduced.