47results about How to "Efficient electrolysis" patented technology

An integrated photoelectrochemical (PEC) cell generates hydrogen and oxygen from water while being illuminated with radiation. The PEC cell employs a liquid electrolyte, a multi-junction photovoltaic electrode, and a thin ion-exchange membrane. A PEC system and a method of making such PEC cell and PEC system are also disclosed.

A photoelectrochemical (PEC) cell includes a photovoltaic electrode that generates voltage under radiation; a solid membrane electrode assembly that includes at least one solid polymer electrolyte and first and second electrodes; a mechanism that collect gases from oxidation and reduction reactions; and an electrical connection between the photovoltaic electrode and the solid membrane electrode assembly. A PEC system and a method of making such PEC cell and PEC system are also disclosed.

The invention relates to an electrolytic machining method for multi-electrode screw feeding integral impeller flow passages, and belongs to the technical field of electrolytic machining. The method adopts a plurality of tool electrodes which are positioned on the same plane and arranged on an electrolytic machining clamp. In the machining process, a translation stage of a machine tool drives the plurality of the tool electrodes to simultaneously feed linearly along the axes direction of an impeller blank, and a turn table on the translation stage drives the plurality of the tool electrodes to rotate; meanwhile, the impeller blank rotates around the axes of the impeller blank, and the tool electrodes perform electrolytic machining along a motion trail determined by the resultant motion. The electrodes and the impeller blank keep a small clearance; electrolyte flows out at a high speed from gaps of the tool electrodes to continuously take away products of electrolysis; and a plurality of impeller flow passages are machined finally. The number and distribution positions of the tool electrodes can be adjusted to meet machining requirements of integral impellers in different types. Because the plurality of the electrodes are adopted to perform machining simultaneously, the machining efficiency for the integral impeller is greatly improved, and the rotation of the electrodes makes machining allowance more even at the same time.

Disclosed is an electrolyzed water manufacturing method and electrolyzed water manufacturing device capable of producing efficiently weakly acidic through weakly alkaline electrolyzed water, and capable of producing said electrolyzed water on a large scale. The electrolyzed water manufacturing device 10 comprises: an anode chamber 20 that is provided with an anode electrode 22; a cathode chamber 30 that is provided with a cathode electrode 32; a middle chamber 40 for containing an aqueous electrolytic solution, disposed between the anode chamber 20 and the cathode chamber 30; an anion exchange membrane 24 for partitioning between the anode chamber 20 and the middle chamber 40; and a cation exchange membrane 34 for partitioning between the cathode chamber 30 and the middle chamber 40. The anode chamber 20 and the cathode chamber 30 are connected by a connecting hole 52 provided in a partitioning wall 50.

A solid polymer membrane-type water-electrolysis apparatus according to the present invention includes a solid polymer electrolyte membrane, an oxygen electrode mounted in contact with one side of the solid polymer electrolyte membrane, a hydrogen electrode mounted in contact with the other side of the solid polymer electrolyte membrane, separator plates mounted adjacent the outsides of the oxygen electrode and the hydrogen electrode and serving as current collector plates having passages for water and generated gasses, fixing plates disposed outside the separator plates and made of a non-conductive material, and reservoirs disposed outside said fixing plates for storing water and the generated gasses. The fixing plates include pressing members build therein for pressing the oxygen electrode and the hydrogen electrode against the solid polymer electrolyte membrane, and flow passages are included in the pressing members. The reservoirs are fixed integrally by tie bolts by clamping the solid polymer electrolyte membrane, the oxygen electrode, the hydrogen electrode, the separator plates and the fixing plates together from outside the fixing plates. Further, the reservoirs have water supply bores provided at locations higher in level than the position of the water electrolysis level, and discharge bores for discharging the generated gasses. In this apparatus, storage tanks for the produced oxygen and hydrogen gasses are formed integrally into a compact structure. Thus, the apparatus is convenient for movement and preservation, and the oxygen and hydrogen gasses stored can be brought into a pressure equal to or higher than the atmospheric pressure and supplied to a remote place.

The invention belongs to the field of heavy metal wastewater treatment and provides an electric flocculation unit, an electric flocculation device and a heavy metal wastewater treatment system. The electric flocculation unit comprises a shell, an anode bar, a cathode tube, iron carbon ball filler, a rotary type scraper device, an ultraviolet lamp, an aerating device, a power module and a liquid conveying mechanism, wherein the cathode tube is vertically arranged in the shell, the anode rod is vertically arranged in the cathode tube, the rotary type scraper device and the ultraviolet lamp are arranged in the cathode tube, the rotary type scraper device is movably connected with the shell through a bearing, the shell is detachably connected with the cathode tube and the anode bar, an insulating plate where a diffluence hole is formed is detachably connected to the cathode tube, and the iron carbon ball filler is stacked on the insulating plate. The electric flocculation device disclosed by the invention comprises a plurality of electric flocculation units, supports and liquid storage tanks, wherein the electric flocculation units, the supports and the liquid storage tanks are communicated through pipelines to be in parallel connection or serial connection. The heavy metal wastewater treatment system comprises the electric flocculation device, an air floating device and an ion exchange device, wherein are sequentially connected with each other. The heavy metal wastewater treatment system disclosed by the invention has a good heavy metal wastewater treatment effect and convenience in disassembling and cleaning.

A method of preparing magnesium metal with bischofite, pertains to the field of metallic material. The invention is characterized in that it takes the bischofite as stock and prepare magnesium hydroxide with ammonia process under the following conditions: at the temperature between 45~55 DEG C for 20~30 minutes, with the proportion between magnesium and ammonia 1:1.2~1.5:2.2 and with the concentration of magnesium chloride about 35~55 g/L, calcinating the magnesium hydroxide under the temperature of 900~1000 DEG C for 3-4hours, getting the magnesia with the purity of more than 99.5%,in the molten salt electrolyte system of lanthanum chloride and magnesium chloride, the proportion between lanthanum chloride and magnesium chloride in moles is 10~30%, the solubility of magnesia is 5~10 mass%, thaw temperature is 700~750 DEG C, the tank voltage 4.5~6.5 volt, the current efficiency comes to 85~90%, the consumption of the direct current of magnesium is 11~12.5kWh per kilogram and the purity of magnesium is above 95%. The method avoids the dehydration process of bischofite and is characterized by the energy-saving and consumption-deducing, the highly effective and cleaning of electrolytic process, particularly for its not emitting chlorine and not polluting the environment.

The invention relates to a method for recycling copper extracted from alkaline copper chloride etching waste liquid. Alkaline chloride system copper-contained etching waste liquid adopts a direct electrolytic copper removal and regeneration industrial method, and adopts a direct copper electrolysis mode; and liquid after removing copper is mixed with collected and absorbed ammonia and electrolysis copper washing water to form standard regenerated alkaline chloride system etching liquid. The method electrolytically deposits copper by independent circulating speed of a cathode plate and high current density, so that the current efficiency is high, the power consumption is low, the quality of a copper plate reaches national first standard cathode copper, the realization is easy, and the alkaline chloride system etching liquid recovers the etching activity; the all-closed replenishing, collection and absorption of ammonia volatilized from the internal are performed to replenish the alkalinity of the regenerated etching liquid; and effective salt attached on the copper plate is mixed in two circulating liquid by a reasonable ratio, so that all effective chemical substances in the internal are stably recycled.

There is provided an ion exchange membrane electrolyzer, wherein at least one electrode is energized by coming into contact with plate spring bodies formed on the electrode side of an electrode holding member forming a space with an electrode chamber partition bonded to a plate-like electrode chamber partition by a strip-like bonded portion, the electrode has a connected portion extending from a plane parallel to the ion exchange membrane toward the electrode holding member side in a direction perpendicular to the electrode plane, the connected portion is provided with an engaging opening extending in a direction perpendicular to the electrode plane, and the engaging opening engages with an engaging member, permitting the electrode to move in a direction perpendicular to the electrode plane within the displacement range of the plate spring bodies.

The invention discloses a high-efficiency electrolytic water catalyst HRu4O8 microrod and a preparation method thereof. The invention aims to solve the problem that the conventional electrocatalyst cannot simultaneously present excellent catalytic performance and stability on HER and OER. According to the HRu4O8 microrod disclosed by the invention, an atomic ratio of H to Ru to O is 1:4:8, and the HRu4O8 microrod has the diameter of 1-10 microns and the length of 5-100 microns. The preparation method comprises the following steps: 1, preparing RuO2 nanoparticles; 2, preparing a ruthenate microrod; 3, preparing the HRu4O8 microrod. The HRu4O8 microrod prepared by the invention can be applied to the HER and OER and is excellent in performance and stability. The high-efficiency electrolytic water catalyst HRu4O8 microrod and the preparation method disclosed by the invention are applied to the field of electro-catalysis.

The invention discloses a method for gradient separation of titanium copper and titanium silicon from titaniferous slag through liquid copper cathode electrolysis, and belongs to the field of electrochemical metallurgy. The method comprises the following steps of placing copper powder or copper blocks at the bottom of a crucible to serve as a cathode, and placing the titaniferous slag above the copper powder or the copper blocks to serve as an electrolyte, wherein an inert electrode or a graphite electrode serves as an anode; using high-melting-point metals such as molybdenum and tungsten as a conductive rod, and using silicon nitride, zirconium oxide and other materials as protective sleeves for wrapping; placing the crucible filled with the cathode and the electrolyte in a high-temperature furnace, and installing the anode and the conductive rod; and raising the furnace temperature to be 20 DEG C-100 DEG C higher than the melting point of the titaniferous slag, keeping the temperature for 0.5 h-2 h, lowering a cathode conductive rod and the anode, and carrying out direct current electrolysis. When the titanium ion activity in the titaniferous slag is 10%-60%, titanium-copper alloy can be obtained through direct current electrolysis; when the titanium ion activity in the titaniferous slag is 1%-10%, titanium-silicon alloy can be obtained through direct current electrolysis; and when the titanium ion activity in the titanium-containing slag is less than 1%, the electrolysis is stopped. According to the method disclosed by the invention, metallurgical secondary resources are comprehensively recycled through utilizing an electrochemical metallurgy method; and meanwhile, the operation is simple and the cost is low.

The invention discloses an electrochemical sewage treatment apparatus and an electrode cleaning mechanism thereof. The electrochemical sewage treatment apparatus comprises a treatment pool, an aeration device, electrode plates and decontamination beads, wherein the electrodes of the electrode plates on both sides of the treatment pool are opposite, the electrode plates installed on both sides havethe same number and are opposite, the outer side of the electrode plate is movably sleeved with the decontamination beads, or the decontamination beads arranged on the electrode plate can be producedinto the integration so as to form a decontamination plate when plural groups of the electrode plates arranged side by side exist, the decontamination bead comprises a decontamination bead body and decontamination brushes, the decontamination bead body has an abacus-bead-like structure, the decontamination brushes are uniformly arranged on the inner side wall of the decontamination bead body andcontacts the plate wall of the electrode plate, the gas bubbles generated by the aeration device at the beginning of the operation can drive the decontamination beads to move upward along the electrode plate, the generation of the gas bubbles is stopped when the aeration device stops working, and the decontamination beads move downward along the electrode plates under the action of gravity. According to the present invention, the electrode cleaning mechanism can efficiently electrolyze the electrolyte in sewage and conveniently clean the dirt of electrode plates, and is mainly used for electrochemical treatment of sewage.

The embodiment of the invention provides a water quality electrolyzer and a cleaning machine. The water quality electrolyzer comprises a shell, the shell is internally provided with an electrolysis cavity; the water quality electrolyzer also comprises an electrolysis sheet arranged in the electrolysis cavity, wherein the middle part of the electrolysis sheet is provided with an inner hole; a powerassembly which comprises a power part and a stirring piece driven by the power part, the power part is fixed to the shell, and the stirring piece is located in the electrolysis cavity and extends into the inner hole so as to stir water in the electrolysis cavity and enable the water to quickly enter the electrolysis sheet. According to the water quality electrolyzer, the stirring piece capable ofstirring water flow is arranged in the center of the electrolysis sheet, water can be rapidly stirred into the electrolysis sheet, meanwhile, the electrolysis sheet with the large electrolysis area is matched, and therefore efficient electrolysis is achieved, and the performance of electrolyzed water quality is greatly improved.

Disclosed is an electrolysis module including: an electrolysis unit module including a plurality of pipe-type electrolysis cells connected in series with each other; a molding case surrounding the periphery of the electrolysis unit module to protect the electrolysis module; a cell guide member installed in the molding case to support the electrolysis unit module; a power cable having a first end connected to the electrolysis unit module and a second end extending to an outside through the molding case; and a resin layer formed by filling the inside of the molding case to cover the outer surface of the electrolysis unit module disposed in the molding case.

The present invention relates to a method for recovering elemental silicon from silicon sludge by electrolysis in a non-aqueous electrolyte. The recovery method of silicon according to the present invention can achieve direct reduction of silicon by electrolysis at a low temperature (below 200° C.), control the structure of silicon by a simple process and a change in electrolysis conditions, and perform a continuous process by adding a silicon salt.

An electrolyzed water generation device 1 comprising: an electrolysis chamber (40) that generates electrolyzed water by electrolyzing water and is divided by a partitioning membrane (43), such as a solid polymer membrane, etc., into a first polar chamber (40A) having a first feeder (41) arranged therein and a second polar chamber (40B) having a second feeder (42) arranged therein; a first water supply path 11a connected to the first polar chamber (40A) and supplying water to be electrolyzed, to the first polar chamber (40A); a first water outlet path (12) connected to the first polar chamber (40A) and discharging electrolyzed water that has been electrolyzed, from the first polar chamber (40A); a second water supply path 11b connected to the second polar chamber (40B) and supplying water to be electrolyzed, to the second polar chamber (40B); and a second water outlet path (13) connected to the second polar chamber (40B) and letting out electrolyzed water that has been electrolyzed, from the second polar chamber (40B). The second outlet path (13) has provided therein a water level detection means (26) that detects the water level inside the second water outlet path (13).

The invention discloses a magnetic disk stirring pulse, sine wave gear disk pulse and magnetic drum pulse type electrolysis impurity removing tank. An electrolytic manganese chemical combination leachate storage tank communicates with an electrolytic manganese qualification liquid storage tank through an impurity removing electrolytic tank; the impurity removing electrolytic tank is provided with an electrolysis pole plate with a cathode being stainless steel and an anode being lead alloy; a magnetic disk stirring pulse generator and a sine wave gear disk pulse generator are arranged; the impurity removing electrolytic tank is connected to a liquid inlet of a magnetic drum differential motion type circulating pump through a pipeline, and a liquid outlet of the magnetic drum differential motion type circulating pump communicates with the impurity removing electrolytic tank through a pipeline. According to the electrolysis impurity removing tank, the stainless steel serves as the cathode, the lead alloy serves as the anode, and ions of heavy metal such as copper, zinc, nickel, cadmium and cobalt in solutions are removed during cathodic deposition through electrolysis; through the multiple pulse generators installed in the electrolytic tank, bubble adhesion generated on the surface of the pole plate can be removed, ion distribution can be uniform, and efficient electrolytic impurity removal can be guaranteed; the impurity ion concentration can be lowered to be lower than 1 mg/L, the recovery rate of heavy metal can be higher than 95%, and secondary pollution can be avoided.