14 results about "Hydrogen peroxide product" patented technology

This invention relates to the field of hydrogen peroxide manufacturing technology, specifically disclosing a fully acidic fixed-bed hydrogen peroxide production process. The process includes: preparing a fully acidic working solution containing a compound anthraquinone and an acid stabilizer; conducting a fixed-bed hydrogenation reaction under fully acidic conditions in the main circulation of the working solution using a dedicated catalyst; subsequently performing oxidation and countercurrent extraction to directly obtain the hydrogen peroxide product; the raffinate enters an independent regeneration system, is treated with a compound regenerator and its pH value adjusted before being returned to the circulation system. This invention avoids contact with alkaline solutions through a fully acidic environment, significantly improving the safety of the production process, while effectively inhibiting the formation of degradation products, optimizing the performance of the working solution, and improving the capacity and stability of the equipment. It also has the advantages of low energy consumption, low pollution discharge, and simple operation.

The invention discloses a method for synthesizing hydrogen peroxide through in-situ curing air electroreduction. The method comprises the following steps: synthesizing a precursor from zinc nitrate powder and 2-methylimidazole in methanol, calcining the precursor powder to obtain a zinc-based catalytic material, loading the zinc-based catalytic material on a carbon substrate to form a zinc-based gas diffusion electrode, and assembling the zinc-based gas diffusion electrode as a working electrode in a liquid flow electrolytic tank to obtain the zinc-based gas diffusion electrode. Air is used as a raw material to generate hydrogen peroxide through electroreduction, a KF solution or a K2SO4 solution is used as an electrolyte, and the KF solution or the K2SO4 solution and the hydrogen peroxide are subjected to an in-situ curing reaction to obtain a cured hydrogen peroxide product. The in-situ curing technology is adopted, decomposition of hydrogen peroxide can be effectively prevented, and the method has wide application potential in the fields of energy, catalysis, pollutant treatment and the like.

The utility model discloses a kind of technical grade hydrogen peroxide product purification device, mainly by oxidation tower, extraction tower, purification tower I, falling film evaporator, rectifying tower, purification tower II is formed, 60% technical grade hydrogen peroxide pipeline after cooling of falling film evaporator is connected with lower part in oxidation tower, hydrogen peroxide pipeline of oxidation tower bottom outlet is connected with upper part of purification tower II, aromatic hydrocarbon pipeline is connected with lower part of purification tower II.In the present application, after 60% technical grade hydrogen peroxide is returned to oxidation tower preliminary purification, it is sent into purification tower II again, continue to reduce TOC, metal ion and other impurities in 60% technical grade hydrogen peroxide, and purified hydrogen peroxide is obtained.The present application does not need to use adsorption tower, can reduce waste liquid, waste adsorbent generated in adsorption process, and the effective component of working fluid is recycled, consumption is reduced, and the safety performance of device is improved;Industrial grade dilute product hydrogen peroxide, industrial grade concentrated product hydrogen peroxide and chemical grade concentrated product hydrogen peroxide can be obtained simultaneously.

The invention relates to the technical field of hydrogen peroxide manufacturing, and particularly discloses a full-acid fixed bed hydrogen peroxide production process. The process comprises the following steps: preparing a fully acidic working solution containing composite anthraquinone and an acidic stabilizer; in the main circulation of the working solution, a fixed bed hydrogenation reaction is carried out under a fully acidic condition, and a special catalyst is used; then oxidation and counter-current extraction are carried out to directly obtain a hydrogen peroxide product; and the raffinate enters an independent regeneration system, is treated by a composite regenerant, is subjected to pH value adjustment, and is returned for circulation. According to the method, alkali liquor contact is avoided through a full-acid environment, the safety of the production process is remarkably improved, meanwhile, generation of degradation products is effectively inhibited, the performance of a working solution is optimized, the productivity and stability of the device are improved, and the method has the advantages of being low in energy consumption, little in pollution discharge and easy and convenient to operate.

A method for purifying hydrogen peroxide capable of producing highly pure hydrogen peroxide is provided. The method for purifying hydrogen peroxide of the present invention includes the steps of regenerating an adsorption resin in a primary purification system using an acidic solution, a basic solution, or a combination thereof, purifying a crude hydrogen peroxide product using the adsorption resin in the primary purification system, and purifying the primary purified hydrogen peroxide solution using a secondary purification system, which includes an electrodeionization system, and the adsorption resin removes organic carbon and cations from the crude hydrogen peroxide product.

The present invention relates to a method for electrosynthesizing hydrogen peroxide using a filled resin, a reactor, and an application thereof. By designing a reactor for electrosynthesizing hydrogen peroxide using a filled resin, a hydrogen peroxide solution is directly prepared using air and pure water. The electrochemical reactor comprises an anode and cathode, a liquid chamber, and a gas chamber. The liquid chamber between the anode and cathode is filled with a 732-type macroporous strong acid cation exchange resin. The anode is an iridium tantalum electrode, and the cathode is a gas diffusion cathode coated with an activated carbon black catalyst. Under direct current electrolysis, the cation exchange resin promotes the dissociation of pure water, and the oxygen in the air is reduced on the surface of the gas diffusion cathode and combines with the protons generated by the dissociation of water to form hydrogen peroxide. The present invention avoids the use of high-concentration electrolytes in the electrosynthesis of hydrogen peroxide, improves the concentration and current efficiency of the prepared hydrogen peroxide, has the advantages of low environmental pollution risk during the production process and high purity of the hydrogen peroxide product, and can be more conveniently applied to water treatment fields such as sterilization and pollutant removal.

The invention relates to the technical field of anthraquinone process hydrogen peroxide production, and discloses a method for reducing the total carbon content in an anthraquinone process hydrogen peroxide product, and the method comprises the following steps: in an oxidation system, introducing initial oxidation tail gas discharged by an oxidation tower into a separation unit, and carrying out cooling and separation treatment to obtain first aromatic hydrocarbon, second aromatic hydrocarbon and third aromatic hydrocarbon; circulating the first aromatic hydrocarbon back to the hydrogenation system and / or the oxidation system to be reused as a circulating working solution; and circulating the second aromatic hydrocarbon and / or the third aromatic hydrocarbon back to the hydrogen peroxide purification system to be reused as the extraction agent. The hydrogen peroxide production method provided by the invention is high in purification efficiency and low in cost, can maintain stable aromatic hydrocarbon mass fraction of a working solution system, and can further reduce the total carbon content of hydrogen peroxide.

The invention belongs to the field of electro-catalysis and process control, and particularly relates to a continuous electro-catalysis preparation device and process for high-purity hydrogen peroxide and a control method. Comprising a double-chamber electro-catalysis unit, a reverse osmosis unit, a conductivity sensor and the like. And the control module coordinates the working conditions of the electrolyte supplement pump, the electro-catalysis unit feed pump, the pure water feed pump and the membrane front pump and the voltage of the power supply according to the collected data and the set threshold value, so that the continuous and stable preparation of the high-purity hydrogen peroxide is realized. The electro-catalysis unit is divided into the cathode chamber and the anode chamber by adopting the ion exchange membrane, so that the anode decomposition problem of hydrogen peroxide is avoided; by coupling the reverse osmosis membrane, the purity of the hydrogen peroxide product is improved; and through the control system, the operation stability and the automation degree are improved.

The utility model provides a working solution washing system for hydrogen peroxide production. The working solution washing system comprises an extraction tower, an alkali washing device, a water washing device and an acidification kettle which are sequentially connected in series, the washing device is also connected with an alkali liquor tank; the acidification kettle is also connected with a phosphoric acid storage tank. According to the system, the alkali washing device is arranged to conduct alkali washing regeneration on extracted working liquid, meanwhile, the water washing device and the acidification kettle are arranged to conduct water washing and acidification on the working liquid obtained after alkali washing, and therefore the stability of hydrogen peroxide in the working liquid is improved; the defect that the quality of a hydrogen peroxide product is reduced due to the fact that degradation products are accumulated in the working solution and normal proceeding of the technological process is affected is overcome.

The invention discloses a technical-grade hydrogen peroxide product purification device and method, the technical-grade hydrogen peroxide product purification device mainly comprises an oxidation tower, an extraction tower, a purification tower I, a falling-film evaporator, a rectifying tower and a purification tower II, a 60% technical-grade hydrogen peroxide pipeline cooled behind the falling-film evaporator is connected with the middle lower part of the oxidation tower, and a hydrogen peroxide pipeline at a tower bottom outlet of the oxidation tower is connected with the upper part of the purification tower II; the aromatic hydrocarbon pipeline is connected with the lower part of the purification tower II. According to the invention, 60% technical-grade hydrogen peroxide is returned to the oxidation tower for preliminary purification, and then is sent to the purification tower II for continuously reducing impurities such as TOC, metal ions and the like in the 60% technical-grade hydrogen peroxide, so that purified hydrogen peroxide is obtained. An adsorption tower is not needed, waste liquid and waste adsorbents generated in the adsorption process can be reduced, meanwhile, effective components of working liquid are recycled, consumption is reduced, and the safety performance of the device is improved; industrial-grade dilute hydrogen peroxide, industrial-grade concentrated hydrogen peroxide and chemical-grade concentrated hydrogen peroxide can be obtained at the same time.

The application discloses a hydrogen peroxide working solution solvent system, which comprises the following components: aromatic hydrocarbon, imide derivative A and diisobutyl carbinol, wherein the aromatic hydrocarbon is 30-95 parts, preferably 60-85 parts, the imide derivative A is 2-30 parts, and the diisobutyl carbinol is 2-20 parts. The solvent system has good solubility for 2-alkyl anthraquinone, especially hydrogen anthraquinone, and the working solution has stable physical and chemical properties, low density and low viscosity. The hydrogen peroxide device operation efficiency can be greatly improved, high-quality and high-concentration hydrogen peroxide products can be directly produced, the safety and reliability of the production process can be improved, the asset investment and production operation cost can be reduced, and the solvent system has a good industrial application prospect.

The invention discloses a method for synthesizing hydrogen peroxide, which comprises the following steps: placing water in a spark discharge area, ionizing the water to generate water free radical cation clusters, introducing argon into a discharge reaction cavity, reacting water free radical cations with argon to obtain a hydrogen peroxide product, and opening the cavity after the reaction is finished to collect hydrogen peroxide. By simulating an atmospheric discharge experiment, argon and water fully act to prepare hydrogen peroxide, a new thought is provided for exploring a possible path of a life origin, and the device has important scientific significance in exploring a material basis of the life origin.

To provide a method for producing hydrogen peroxide by which the content of water-soluble organic acids in hydrogen peroxide as an intermediate product extracted in an extraction column is reduced, corrosive factors of concentration distillation equipment are reduced and the content of the water-soluble organic acids in hydrogen peroxide as a final product is reduced.SOLUTION: Disclosed is a method for producing hydrogen peroxide using an apparatus for producing hydrogen peroxide, which comprises a working solution tank for storing a working solution containing an organic acid ester, and a working solution cleaner for cleaning the working solution, at least a part of which has been withdrawn from the working solution tank, with water, wherein the flow rate ratio (working solution / water) between the working solution, at least a part of which has been withdrawn from the working solution tank, and water for cleaning the working solution is not more than 12. And a working solution washing step of washing the working solution with water to reduce a content of water-soluble organic acids contained in the working solution.SELECTED DRAWING: None

Industrial-grade hydrogen peroxide is purified through heavy aromatics, demulsification is conducted through the coalescer, the hydrogen peroxide is further clarified and transparent, then the hydrogen peroxide is cooled through a low-temperature water cooling method, the solubility of organic matter is reduced, and finally the industrial-grade hydrogen peroxide is conveyed into the filter through the pump to be filtered and then loaded for sale. The method can fully improve the quality of the industrial-grade hydrogen peroxide product, effectively reduce the content of organic matters in hydrogen peroxide, avoid the problem that the organic matters float on the surface of the hydrogen peroxide product due to temperature reduction in the transportation process, and greatly improve the quality of the hydrogen peroxide product.