104results about How to "Eliminate Concentration Polarization" patented technology

The invention discloses a ceramic filter film of rare-earth modified attapulgite with a nano coating, which comprises a ceramic supporting body and separation film, wherein the ceramic supporting body is plate-type porous ceramic sintered by modifier added with rate-earth oxide in attapulgite clay and intensifier, the ceramic supporting body has the characteristics of high porosity, uniform pore diameter, high strength, light weight and the like; the separation film is a nano decoration coating, and has outstanding hydrophilicity and lipophobicity. The coating film liquid is produced by nano attapulgite mixing with nano rare-earth oxide and relevant additive dispersing in water, coated on the ceramic supporting body surface via a soak-lifting method, and is sintered at high temperature to form porous separation film with nano surface characteristics; the ceramic filter film can be made into a hollow cavity-type structure, a plurality of combined revolving film components are used in rotary manner, more efficient initiative cross-flow operation can be realized, the film surface is self-cleaned by filter liquid brushing in the revolving process, and the blockage and pollution of the film can be greatly delayed.

The dual water supply system for household includes a soft water module with KDF filter connected to the raw water pipeline, a water softening resin device with salt box and resin jar, an adsorbing module with active carbon with water outlet connected to toilet water pipeline, an ultrafilter module, an RO module with pressurizing water pump, a bath water inlet pipeline, and a pressure container connected to the pure water outlet of the RO module. The dual water supply system makes the drinking water and the living use water flow separately, and has reverse resin regeneration, active carbon surface flushing and ultrafiltering membrane cross flow filtering to complete the timely system washing for eliminating pollutant and prolonging service life.

The invention provides a formation technology of a flexible package lithium ion battery. The formation technology comprises the following steps: heating and pressing the lithium ion battery in the formation process, and controlling the atmosphere to form current and voltage, so that a compact SEI film is formed on the electrode surface of the flexible package lithium ion battery, the cycle life ofthe battery is prolonged, and the capacity retentivity of the battery is improved.

The invention relates to a preparation method of flaky metal powder. The preparation method comprises the following steps in sequence: machining a metal to be prepared into flaky powder into a flake and using the flake as a soluble anode; in an anode chamber of an electrochemical reactor, taking sulfate of the metal and sulfuric acid water solution as an electrolyte, oxidizing the soluble anode into corresponding metal ions and enabling the metal ions to enter anolyte; and after solid-liquid separation and anolyte impurity removal, adding an alkyl glycoside surfactant to the anolyte and adjusting the pH value to 5.0-6.5, then injecting the electrolyte into a cathode chamber of the electrochemical reactor, carrying out electrochemical reduction reaction on the cathode and separating out the metal to be prepared through deposition, simultaneously starting an ultrasonic generating device to strip the metal to be prepared on the cathode and deposit the metal to be prepared in the electrolyte below the cathode and then obtaining the qualified flaky metal powder through solid-liquid separation, washing, vacuum drying, screening and packaging. The preparation method has the advantages of reasonable and convenient process, safe and reliable preparation course and good prepared product quality.

The invention relates to a pulse charging method used for prolonging VRLA battery service life. The invention aims at provides a pulse charging method used for prolonging VRLA battery service life, such that the service life of a valve-regulated lead acid battery is prolonged. The invention adopts a technical scheme that, a VRLA battery has an output voltage of U and a capacity of C. The method is characterized in that the method is preceded in three sections which are a section A, a section B, and a section C. In the section A, constant-current charging is carried out with a charging limited current I. In the section B, periodic-change charging is carried out with constant current of the limited current I and constant-voltage of a second charging voltage U2. In the section C, periodic-change charging is carried out with constant-voltage of a first charging voltage U1 and constant-voltage of the charging voltage U2. In the section A, when a voltage is increased to U1, the process turns to the section B. In the section B, when the battery is charged to almost full, the process turns to the section C. The invention is suitable to be used in a field of storage battery charger.

The invention relates to a preparation method of a gel polymer dielectric film by conveying an interpenetrating network structure P (LiAMPS) single ion, which belongs to a preparation method of polymer electrolyte films. The present invention solves the problems of low transport numbers and dimension stability of the present gel polymer electrolyte ions. The invention employs 2-acrylamide-2-methyl propanesulfonic acid lithium (LiAMPS) and vinyltriethoxysilane free radical polymerization to obtain a linear polymer P (LiAMPS-co-VTES), P (LiAMPS-co-VTES) containing an ethoxy functional group enables hydrolysis and polycondensation to form a net structure, simultaneously a cross-linking agent monomer polyethylene glycol dimethyl methacrylate is performed a free radical polymerization to form another net structure. The invention is capable of raising the dimension stability of the polymer electrolyte. Through heat weightlessness analysis, the polymer electrolyte films have good heat stability, the initial weightless temperature of the films is more than 200 DEG C, so that the requirement of lithium ion battery can be satisfied.

The invention belongs to the water processing technology field, concretely provides a device and a technology for processing degradation-resistant waste water through a hypergravity multistage sacrificial anode electro-Fenton method, and solves the problem of mass transfer limitation in processing degradation-resistant waste water through a sacrificial anode electro-Fenton method. The device comprises a plurality of corrugated cylindrical anodes and anode connection disks and a plurality of corrugated cylindrical cathodes and cathode connection disks. The corrugated cylindrical cathodes and the cathode connection disks are stationary relative to a shell. The centers of the anode connection disks are connected with a rotating shaft. In the technology, the rotary corrugated cylindrical anodes and anode connection disks, the stationary corrugated cylindrical cathodes and cathode connection disks and a H2O2 solution form a hypergravity multistage sacrificial anode electro-Fenton reaction system. The device and the technology can reinforce the mass transfer process of the electro-Fenton reaction. The electrode area utilization rate, the oxygen utilization rate, the H2O2 production rate and the processing efficiency are all raised. The device has advantages of small size, low load and low energy consumption, and is suitable for continuous operation and scale processing.

The invention discloses an accumulator charger and charging method, which comprises the following parts: commutating circuit, pulse power amplification and transformation circuit, charging sampling circuit and microcomputer control circuit. The charger uses down rectangular wave pulse charging to produce segment charging peak current within ideal curved scale, which eliminates accumulator resistance polarization and concentration polarization of common intelligent charger. When the pulse down segment stops charging, the accumulator possesses enough cooling restoring time. The invention realizes rapid charging, which lengthens utility lifetime of accumulator.

The invention discloses a method for recovering tellurium by swirl electrolysis of a tellurium-containing solution, which comprises the following steps: adding concentrated sulfuric acid into the tellurium-containing solution until the pH value of the tellurium-containing solution is 5.7-6.5, controlling the temperature of the tellurium-containing solution to be higher than React at 90°C for 2 to 4 hours, filter; leach the filter residue obtained after filtration with sodium hydroxide solution; perform swirl electrolysis on the leaching solution obtained after leaching, and take out the cathode after swirl electrolysis; The solution is boiled, washed, and dried to obtain high-purity tellurium. The invention adopts swirl electrolysis to recover tellurium in the tellurium-containing solution, which avoids the influence of unfavorable factors on electrowinning such as the decrease of current efficiency and the increase of concentration polarization caused by the slow flow of the solution in the traditional electrolysis process, and shortens the electrolysis cycle of tellurium , which reduces the concentration requirements of impurity elements in the electrolyte, and has many advantages such as high selectivity, high current density, and high product purity.

The invention aims to provide a free-standing internal formation charging process for a storage battery. Through the adoption of the internal formation process in which charging is performed for six times and discharging is performed for four times, an original acid extraction step is advanced to the time after the fifth charging, so that the storage battery is unnecessary to stand for 24 hours, battery quality is guaranteed while production efficiency is improved, in addition, concentration polarization can be eliminated, and voltage stability can be ensured.

The invention discloses a centrifugal ultrafiltration device suitable to be used in the preprocessing of a micro sample, which comprises a centrifuge tube, and is characterized in that a hollow fiber film which is parallel to the axis of the centrifuge tube and of which the outlet extends out of the centrifuge tube are arranged in the centrifuge tube. The centrifugal ultrafiltration device can bewidely used in the preprocessing of the micro sample as well as the separation, purification and concentration of micro biological samples. The use of the device is simple, quick and convenient; the processed sample suffers little interference and has high sensitivity; and, the service life of a chromatographic column is prolonged effectively.

The invention relates to a rotational flow electrolyzing device for separating and recycling a metal composite waste material. The rotational flow electrolyzing device comprises an anode basket, a liquid intake channel, a power supply, an anode mud channel, an anode mud collecting tank and a cathode, wherein the cathode is internally provided with the anode basket and a clearance is formed between the cathode and the anode basket; the anode basket is internally filled with a metal composite waste material so as to form an anode integrally; the anode basket is internally provided with a liquid intake channel; electrolyte flows into a metal composite waste material outside the channel via the liquid intake channel, is in full contact with the metal composite waste material for reacting, further penetrates through the anode basket to enter the clearance between the anode and the cathode, and then flows out; metal required to be electrolyzed and purified in the metal composite waste material is dissolved in an ion mode under the specific electrode potential and is separated out from the cathode; although metal with low electrode potential is dissolved at the anode, the metal cannot be separated out at the cathode, and metal with high electrode potential is remained at the anode as anode mud, and flows into an anode mud collecting tank via the anode mud channel. According to the invention, metal can be separated and recycled efficiently with zero pollution and low cost.

The embodiment of the invention provides a charging method and device. The charging method is characterized in that the charging for a battery includes a first charging stage and a second charging state, wherein the first charging state comprises at least two charging sub-steps; the battery is sequentially subjected to first constant-current charging, second constant-current charging, constant-current discharging and third constant-current discharging in each charging sub-step; the battery is subjected to constant-voltage charging in the second charging state. According to the technical scheme provided by the embodiment of the invention, the charging method and device can solve the problem of high safety risk, caused by the increase of the charging speed, of the battery in an existing charging method, can be solved.

The invention discloses a spent solution treatment method of a silver electrolyte. A silver electrolyte spent solution, as a silver electro-deposition liquid, is fed into a whirl-flow electro-deposition system to perform primary electro-deposition; and then metal copper is added to a low-silver liquid to replace crude silver powder; a desilverized solution, as a copper electro-deposition mother liquid, is fed into the whirl-flow electro-deposition system to perform secondary electro-deposition; and finally, a part of a low-copper liquid is fed back to a sliver liquid preparing system, while the rest part of the low-copper liquid is sent to an environmental protection workshop for treatment. The spent solution treatment method of the silver electrolyte is simple in processes, convenient to carry out and low in cost, can be used for directly recycling valuable metal, such as silver, copper and the like, in a high-effective, low-cost and high-recovery-rate manner.

The invention relates to a continuous salinity gradient power generation device. The device comprises a dilution device, a reverse electrodialyzer, a forward osmosis device, a concentrated salt liquid tank and a light salt liquid tank; the concentrated salt solution tank contains a concentrated salt solution, the light salt solution tank contains a light salt solution, and the concentration of the concentrated salt solution is greater than that of the light salt solution; the reverse electrodialyzer is provided with a cathode and an anode, and a cation exchange membrane, an anion exchange membrane, a thick liquid chamber and a thin liquid chamber are alternately arranged between the cathode and the anode; a potential difference is formed between the cathode and the anode of the reverse electrodialyzer; the concentrated salt solution circulates between a concentrated solution chamber and a concentrated salt solution tank of the reverse electrodialyzer, the light salt solution circulates between a light solution chamber and a light salt solution tank of the reverse electrodialyzer, the dilution device provides a diluent to maintain the light salt solution at a low concentration, the forward osmosis device provides a concentration effect to maintain the concentrated salt solution at a high concentration, and part of the light salt solution is concentrated and then is used for supplementing the strong salt solution. The device disclosed by the invention can realize cyclic continuous power generation by utilizing the salt concentration difference and has the characteristic of high power generation efficiency.

The invention belongs to the technical field of surface engineering and surface treatment, and discloses an electroplating solution for directly electrodepositing iron on the surface of a magnesium alloy and an electroplating process thereof. The electroplating solution comprises the following components in concentration of 1-300 g/L of water soluble iron/ferrous salt, 1-1000 g/L of citric acid and/or citrate, 1-50 g/L of sodium fluoride, 0.01-200 g/L of a surfactant, 0.1-500 g/L of a co-complexing agent and 1-1000 mL/L of ammonia, and water is used as a solvent. The electroplating solution can be used for electrodepositing the iron on the surface of the magnesium alloy in a one-step method, and a prepared pure iron coating is compact, uniform, good in binding force, good in biocompatibility, degradable and stable in effect, can provide effective corrosion protection for a magnesium alloy matrix, and can also realize controllable preparation of coating morphology, grain size and thickness and the like. The electroplating solution and the electroplating process thereof have the advantages of low cost, simple operation and easiness in large-scale production.

The invention relates to a device for treating refractory wastewater through electrocatalytic oxidation and a method. The device comprises a cylindrical cyclone electrocatalytic oxidation device, wherein a liquid outlet and a liquid inlet are formed in the upper and lower ends of the device and are separately located at tangent planes of a cylindrical device body, and the wastewater enters along acylindrical tangent line direction through a magnetic driving pump and forms cyclone along the internal wall of a cylinder. An electrode assembly consists of a DSA anode, stainless steel and a titanium cathode, and the DSA anode is lead dioxide, iridic oxide, ruthenium dioxide or a titanium-plated platinum anode. The core of the device is that the cyclone is formed by using forced water flow, a concentration polarization phenomenon inside an electrocatalytic reactor is eliminated, the mass transfer efficiency of the reactor is increased, and the reaction efficiency is increased. Proven by treatment of high-salinity wastewater of coal chemical industry, the device has good electrocatalytic oxidation capacity, the chromaticity and COD (chemical oxygen demand) of the high-salinity wastewatercan be obviously lowered, effluent can enter an evaporation crystallizing system, produced salts are qualified through detection by national salt product quality testing center, and the purity of sodium chloride and sodium sulfate reaches 99.5%.

The invention provides a recovery method of N-methyl pyrrolidone. The method is characterized by comprising the following steps: heating an N-methyl pyrrolidone material liquid with the water contentof 1-50 wt.% in a circulating tank to 30-190 DEG C; introducing the heated N-methyl pyrrolidone material liquid into a pervaporation membrane assembly to make water in the material liquid be separatedfrom the material liquid side of the pervaporation membrane and enter the permeation side, wherein the pervaporation membrane assembly comprises 1-3000 organic-inorganic or inorganic-organic hybrid membrane single-pass pipes or multi-pass pipes, an absolute pressure of the permeation side is set to be 100-15000 Pa, and a membrane feeding speed of the material liquid is set to be 0.15-1.6 m/s; after the material liquid passes through the pervaporation membrane assembly, making the material liquid on the material liquid side return to the circulating tank, and making the water on the permeationside be condensed and recovered; and performing circulation for multiple times on the material liquid in the circulating tank to obtain recovered N-methyl pyrrolidone.

The invention provides a nano porous gold enzyme-free flexible sensing electrode for detecting glucose through sweat, and a preparation method and application thereof. The invention provides a three-electrode coplanar integrated enzyme-free glucose sensing electrode, nano porous gold with high catalytic activity is combined with a fine interdigital electrode through electrodeposition, and a feasible method for electrodeposition of a nano material in a microelectrode area is provided. The nano porous gold modified flexible sensing electrode provided by the invention has higher sensitivity, extremely low detection limit, wider detection range and excellent stability and anti-interference performance, wherein the detection limit is 0.55 micrometers, in the detection ranges of 0.001-2.50mM and2.50-10.0mM, the electrode respectively has high sensitivity of 1297 mu A/mM.cm2 AND 854.7 mu A/mM.cm2.

The invention belongs to the technical field of electrolytic recycling of metallic copper and gold, and particularly relates to a method of selective electrolytic leaching recycling gold and copper from waste memory strips. The method comprises the following specific steps that (1) a broken abandoned golden finger is put into an electrolytic bath containing an electrolytic solution I and an annexing agent I for electrolysis; (2) after reaction is finished, the broken abandoned golden finger is taken out and is replaced with a cathode plate, crude copper is recycled, and filtering and washing are carried out; (3) an electrolytic solution II and an annexing agent II are supplied in the electrolytic bath for re-electrolysis; (4) crude gold powder on a cathode is recycled after reaction is finished; and (5) a leaching solution is recycled and subjected to concentration and enrichment, and re-electrolysis and recycling are carried out. According to the method of selective electrolytic leaching recycling gold and copper from the waste memory strips, the recycling cost is low, the purpose of selective resource recycling the gold and copper is realized by adding different annexing agents in a same electrolytic solution system, and the recycling rates of the gold and the copper both can reach more than 98.5%.

The invention relates to a copper-plated steel wire and a production method thereof. The production method for the copper-plated steel wire comprises the following steps of pre-treating low-carbon steel, carrying out copper pre-plating, carrying out copper preliminary activating after carrying out water washing, carrying out acid thick copper plating and then carrying out post-treatment so as to obtain the copper-plated steel wire. According to the copper-plated steel wire and the production method thereof, an existing process for a copper-plated steel wire is improved, and therefore the working procedures taking the three modes, namely oil removing-copper pre-plating-acid thick copper plating as the principal things are determined; an HEDP solution is adopted for activating and pre-plating a copper layer, and therefore the copper-steel binding force can be greatly enhanced; and meanwhile, high-temperature, high-current-density and high-speed air agitation is adopted for electroplating, and a compact and smooth coating can be quickly achieved by means of the synergistic effect of multiple aspects.

The invention provides a membrane distillation device and a membrane distillation system. The membrane distillation device comprises a membrane assembly and at least three sets of liquid delivery assemblies. The sets of liquid delivery assemblies are sequentially connected in the membrane assembly along the axial direction of the membrane assembly, and are used for inputting and/or outputting liquid into and/or out of the membrane assembly. According to the invention, feed liquid inlet/outlet numbers in the membrane assembly are increased; inlet/outlet positions are changed; and different inlets/outlets are switched during working, such that turbulence intensity of the feed liquid in the membrane assembly is enhanced; a membrane outer surface feed liquid concentration polarization phenomenon is reduced and eliminated; a temperature polarization phenomenon on two sides of the membrane is reduced and eliminated; a steam productivity in the membrane is improved; and membrane assembly anti-pollution capacity and service life are improved.

The invention discloses a direct scrap copper electrolysis method. The direct scrap copper electrolysis method comprises the following steps that firstly, a non-conductive anode frame is adopted, a copper sheet serves as a conductive material for the anode frame, scrap copper is arranged on the two sides of the copper sheet, the non-conductive anode frame is loaded on a conductive bar, a permanentstainless steel cathode plate serves as a cathode, and an acid copper sulfate solution serves as an electrolyte; secondly, gelatin, albumen powder, thiourea, acitretin and an additive A are added inan electrolytic cell to serve as an electrolysis additive; and thirdly, electrolysis is conducted, scrap copper in the non-conductive anode frame is constantly dissolved, and A-level copper standard electrolytic copper is obtained through stainless steel cathode deposition. The direct scrap copper electrolysis method has the beneficial effects that through electrolysis additive optimization improvement and electrolysis process electrolyte filter quality control, the double-spraying-flow collaborative bottom liquid inflow manner is adopted, concentration polarization is eliminated, the voltageof the electrolytic cell and the electrolytic copper impurity content are greatly reduced, the electrolytic copper product quality is improved, and the electrolytic product economic additional value is increased.