30results about How to "Increase the electrolysis area" patented technology

To maintain compactibility, and to improve electrolytic efficiency while suppressing heat generation. A hollow electrode 21 in which many bore holes 23 are formed on the circumferential wall is arranged at the inside of a vertical, cylindrical treatment tank 10 in a state where an annular flow passage 18 is secured between the hollow electrode 21 and the inner wall of the treatment tank 10, and a rod-shaped electrode 22 is cocentrically arranged at the inside thereof. The circumferential wall 12 of the treatment tank 10 is provided with an introduction port 13 for introducing the liquid to be treated from the outside of the treatment tank 10 into the lower end of the hollow electrode 21, and an introduction-out port 14 for introducing-out the liquid to be treated flowed out from each bore hole 23 inside the treatment tank 10 at the upper end side of the hollow electrode 21 to the outside of the treatment tank 10.

The invention discloses a process for removing tetrabromobisphenol A in wastewater based on an iron-carbon micro-electrolysis technology, which is specifically carried out according to the following steps: preparing a spherical iron-carbon filler which mainly comprises the following raw materials in parts by weight: 35-45 parts of scrap iron, 15-18 parts of graphite, 20-25 parts of activated carbon and 5-8 parts of a phenolic adhesive, adding the scrap iron into a vacuum smelting furnace for smelting, spraying the smelted liquid iron out through an atomizing nozzle, conducting cooling to form spherical powder, punching hole grooves in the surface of the iron scrap spherical powder, smashing and mixing graphite and activated carbon, then adding the mixture, the iron scrap spherical powder and a phenolic adhesive into a centrifugal machine together, and preparing an iron-carbon filler; introducing the wastewater into a purification tank, and adjusting the pH value of the wastewater to 3-4; enabling the wastewater to pass through the filler in an electrolytic purification pipe; and adding sodium hydroxide into a purification cylinder to enable the pH value of the purified water to be 6-10, conducting stirring, standing and precipitating, and taking supernate of the purified water. The method is simple in process, low in cost and suitable for wide popularization.

The invention relates to a method for joint production of chromium oxide green, iron oxide red and high-purity chromate by electrolyzed ferrochromium. The method comprises the following steps: an electrolysis reaction is performed by adopting a self-circulating mode; the temperature is automatically controlled within 20-60 DEG C; the circulating reaction time is controlled according to a formula I; high-concentration chromate solution and solid slag are obtained; the gravity sorting is performed on the obtained solid slag to obtain iron hydroxide; the iron oxide red is obtained by calcining at a temperature of 500-800 DEG C; the hydrothermal reaction is performed on the obtained high-concentration chromate solution to obtain a high-purity chromate purified solution and a chromium hydroxide solid; the high-purity chromate purified solution is filtered, crystallized and separated to obtain a high-purity chromate product; and the chromium hydroxide solid is calcined to obtain the chromium oxide green.

The invention discloses an integrated multi-point-surface electrolysis module device, belonging to water electrolyzers and relating to drinking water electrolysis devices. The device consists of a plurality of cathode or anode rings (1) made from inert metal materials, wherein the cathode or anode rings (1) are of staggered distribution from inside to outside, so as to form a plurality of electrolysis zones of big and small gaps. The invention further discloses an electrolysis cup with the integrated multi-point-surface electrolysis module device. According to the integrated multi-point-surface electrolysis module device, the electrolysis area is large, the occupied internal space of the cup is small, the efficiency is high, the power consumption is low, and drinking water can be effectively electrolyzed, so that the drinking of a human body is healthier.

The invention discloses a titanium foam material modified with cerium-doped iron oxyhydroxide and a preparation method thereof. A titanium foam plate is used as a working electrode, a platinum sheet is used as a counter electrode, and a saturated calomel electrode is used as a reference electrode to form a three-electrode system. The aqueous solution of cerium chloride, sodium sulfate, polyvinylpyrrolidone and hydrogen peroxide is used as the electrolyte, and the cyclic voltammetry is used to sweep the circle, and then the working electrode is taken out, washed and dried to obtain the final product; the invention also discloses the doped Application of cerium iron oxyhydroxide modified titanium foam material in water treatment. The invention uses porous titanium foam as a matrix, and the surface is modified with cerium-doped iron oxyhydroxide, which improves the applicability and activity of iron oxyhydroxide, has higher porosity, adsorption and oxidation capabilities, and can be used as an adsorption filler, filter core or electrode When used in water treatment, it will not cause secondary pollution to the treated water, and the preparation process has good controllability and stability.

The invention relates to a method for preparing high-purity chromate by using ferrochromium, wherein the method comprises the steps: providing an electrolytic device including an electrolytic tank, adouble-cathode device, a double-anode device, an insulating partition plate, a plurality of settling tanks and an electrode; carrying out an electrolytic reaction by a self circulating mode, automatically controlling the temperature at 20 DEG C-60 DEG C, and controlling the electrolyte solution circulating reaction time according to the formula 1 described in the specification, to obtain a high-concentration chromate solution; and inducing the high-concentration chromate solution into a reaction kettle, carrying out a hydrothermal reaction, under the pressure of 2 MPa-10 MPa, heating to the temperature of 180 DEG C-300 DEG C, carrying out a reaction for 2 h-12 h to obtain a hydrothermal reaction slurry, carrying out solid-liquid separation to obtain the high-purity chromate purification solution, and carrying out evaporation concentration, cooling crystallization and filtration separation to obtain the high-purity chromate product.

The invention relates to a method for joint production of chromium oxide green, iron oxide red and high-purity chromate by electrolyzing ferrochrome, comprising the steps of: adopting a self-circulation method for electrolytic reaction, automatically controlling the temperature at 20°C to 60°C, and controlling according to formula 1 Circulate the reaction time to obtain high-concentration chromate solution and solid slag; carry out gravity separation on the obtained solid slag to obtain iron hydroxide, and calcinate at 500°C to 800°C to obtain iron oxide red; The high-concentration chromate solution is subjected to hydrothermal reaction to obtain a high-purity chromate purification solution and chromium hydroxide solid; the high-purity chromate purification solution is filtered and crystallized to obtain a high-purity chromate product; Chromium oxide solid is calcined to obtain chromium oxide green.

The invention discloses a process for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology, which is specifically carried out according to the following steps: preparing spherical iron-carbon fillers, and the iron-carbon fillers mainly include the following raw materials in parts by weight: iron filings 35-45 parts, 15-18 parts of graphite, 20-25 parts of activated carbon, and 5-8 parts of phenolic adhesive, add the iron filings into the vacuum melting furnace for smelting, spray the smelted liquid iron through the atomizing nozzle, and cool it to form a spherical shape The surface of the spherical powder of iron filings is filled with holes and grooves, and the graphite and activated carbon are crushed and mixed, and then added to the centrifuge together with the spherical powder of iron filings and phenolic adhesive to prepare iron-carbon fillers; the waste water is passed into the purification tank Inside, adjust the pH value of the waste water to be between 3-4; pass the waste water through the packing in the electrolytic purification tube; add sodium hydroxide to the purification cylinder to make the pH of the purified water 6-10, stir and let stand for precipitation, and take the purified water. The supernatant of water; the process of the invention is simple, the cost is low, and it is suitable for wide popularization.

The invention relates to a method for preparing chromic anhydride by using ferrochromium, wherein the method comprises the steps: carrying out an electrolytic reaction by a self circulating mode, controlling the circulating reaction time according to the formula described in the specification, to obtain a high-concentration chromate solution, and carrying out a hydrothermal reaction, to obtain a high-purity chromate purification solution; preparing a chromate solution with the mass concentration of 20%-40% with the high-purity chromate purification solution, mixing the chromate solution with adichromate solution with the mass concentration of 23%-50% to prepare an anode mixed feed liquid, and carrying out an electrolytic reaction to obtain a dichromate solution; and adjusting the concentration of the obtained dichromate solution to 27%-73%, taking the obtained dichromate solution as a raw material, carrying out an electrocatalytic synthesis reaction to obtain a mixed solution of chromic acid and dichromate, and carrying out crystallization separation to obtain chromic anhydride.

The invention relates to a device for preparing a high-concentration chromate solution, wherein the device comprises an electrolytic tank, a double-cathode device, a double-anode device, and a plurality of settling tanks; the electrolytic tank comprises a cylindrical main body part and a conical collection part, the upper end of the main body part is provided with an electrolyte solution inlet, and the lower end of the main body part is provided with an electrolyte solution outlet; an inner cathode is arranged in the electrolytic tank, and the cylindrical main body part of the electrolytic tank is used as an outer cathode; the double-anode device comprises a cylindrical inner anode and a cylindrical outer anode arranged outside the cylindrical inner anode in a sleeving manner, and the inner cathode is arranged inside the inner anode in a sleeving manner; an insulation partition plate is used for supporting the double-anode device; each settling tank is provided with a feed port and a discharge port, the feed port of the first settling tank is connected with a discharge port of the electrolytic tank, the discharge port of the first settling tank is connected with the feed port of the second settling tank, and in the way, the discharge port of the last settling tank communicates with the electrolytic tank.

The invention discloses a method for preparing dichromate by using ferrochrome. The method comprises the following steps: an electrolyte solution undergoes an electrolytic reaction in a self-circulation mode, the temperature of the electrolyte solution in an electrolytic cell is automatically controlled to be 20-60 DEG C, the circulating reacting time for the electrolyte solution is controlled according to a formula 1 being t=c1*V1*M2 *Eta / (2*n*M1*I), and a high-concentration chromate solution is obtained; hydrothermal reaction is carried out on the high-concentration chromate solution to obtain a high-purity chromate solution; the high-purity chromate solution is prepared into a chromate solution with the weight percent concentration of 20%-40%, and the prepared chromate solution is mixed with a dichromate solution with the weight percent concentration of 23%-50% to prepare an anode mixed feeding liquid; and a cathode mixed feeding liquid is provided, and the electrolytic reaction is carried out on the anode mixed feeding liquid and cathode mixed feeding liquid to obtain a dichromate solution.

The invention discloses a plasma high-efficiency sewage treatment device and a treatment method thereof, comprising a reaction container, a first plasma electrode assembly, a second plasma motor assembly, an atomization assembly, a layered plate and a rectification assembly, the reaction container It is an inner cavity structure, the layered plate is horizontally placed in the inner cavity of the reaction container, and the inner cavity of the reaction container is divided into the first reaction chamber of the upper layer and the second reaction chamber of the lower layer by the layered plate, so The atomization assembly and the first plasma electrode assembly are respectively arranged above the layered plate, the rectification assembly is arranged in the second reaction chamber, the second plasma electrode assembly is arranged on the rectification assembly, and the second The aqueous solution after the electrolysis of the plasma electrode assembly can ensure the full electrolysis of the sewage solution, and rectify the sewage water flow to ensure the stability of its electrolysis effect.

The invention relates to a method for preparing chromium oxide green by using ferrochrome, comprising the steps of: providing an electrolysis device, including an electrolysis cell, a double cathode device, a double anode device, an insulating partition, a plurality of settling tanks and electrodes; adopting a self-circulation method to carry out The electrolysis reaction is automatically controlled at 20°C to 60°C, and the electrolyte cycle reaction time is controlled according to formula 1. After solid-liquid separation, a high-concentration chromate solution is obtained; the high-concentration chromate solution is introduced into the reactor for hydrothermal reaction , under the pressure of 2MPa~10MPa, heated to 180℃~280℃, reacted for 2h~12h to obtain hydrothermal reaction slurry, filtered and separated to obtain chromium hydroxide solid; calcined chromium hydroxide solid to obtain chromium oxide green.

The invention relates to a method for preparing iron oxide red by using ferrochromium, wherein the method comprises the following steps: a first step, providing a preparation device including an electrolytic tank, a double-anode device, a double-cathode device, an insulating partition plate, a plurality of settling tanks and an electrode; a second step, carrying out an electrolytic reaction by a self circulating mode, automatically controlling the temperature at 20 DEG C-60 DEG C, and controlling the electrolyte solution circulating reaction time according to the formula 1 described in the specification, to obtain a high-concentration chromate solution and a solid slag material; a third step, carrying out conventional gravity magnetic sorting of the solid slag material obtained in the second step, and removing inclusion small-particle ferrochromium to obtain iron hydroxide with the particle size of 30 [mu]m-74 [mu]m; and a fourth step, calcining the iron hydroxide with the particle size of 30 [mu]m-74 [mu]m at the temperature of 500 DEG C-800 DEG C for about 1 h-4 h to obtain iron oxide red.

To maintain compactibility, and to improve electrolytic efficiency while suppressing heat generation. A hollow electrode 21 in which many bore holes 23 are formed on the circumferential wall is arranged at the inside of a vertical, cylindrical treatment tank 10 in a state where an annular flow passage 18 is secured between the hollow electrode 21 and the inner wall of the treatment tank 10, and a rod-shaped electrode 22 is cocentrically arranged at the inside thereof. The circumferential wall 12 of the treatment tank 10 is provided with an introduction port 13 for introducing the liquid to be treated from the outside of the treatment tank 10 into the lower end of the hollow electrode 21, and an introduction-out port 14 for introducing-out the liquid to be treated flowed out from each bore hole 23 inside the treatment tank 10 at the upper end side of the hollow electrode 21 to the outside of the treatment tank 10.