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53results about How to "Increase the rate of oxidation reactions" patented technology
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Liquid-phase oxidation method for cyclohexane
ActiveCN101293810AIncreased reaction rate and heat transfer rateIncrease speedOrganic compound preparationPreparation by hydrogenationCyclohexanoneCyclohexanol
A liquid-phase oxidation method of cyclohexane is provided. The oxidation method is characterized in that the method comprises carrying out reaction of molecular oxygen-containing gas and cyclohexane at a mole ratio of (0.1-10):1 in a micro-reactor under 0.8-2.5MPa at 145-200 DEG C for 0.5-30min. The micro-reactor is a micro-channel reactor or a micro-tube reactor. The method ensures safety and enhances heat transfer, and can remarkably improve the oxidizing reaction speed of cyclohexane and the total selectivity of cyclohexanone, cyclohexanol and cyclohexyl hydrogen peroxide.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for preparing spherical active cardon with base of asphaltum riched in mesopores
InactiveCN1480398AStir wellInhibition of contractionCarbon compoundsWorking-up pitch/asphalt/bitumenActivated carbonPetroleum
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Preparation method for manganic manganous oxide
ActiveCN105417586AImprove solubilitySpeed up replenishmentManganese oxides/hydroxidesReaction rateAtmospheric pressure
The invention relates to a preparation method for manganic manganous oxide. The method is as follows: in an enclosed reaction container, a manganese source with an average valence of manganese being less than 8 / 3 is placed in a reaction solution, the reaction is carried out with heating, the situation is kept that the pressure or partial pressure of oxidizing gases in the reaction system is more than or equal to 1 standard atmospheric pressure, and a crude product of manganic manganous oxide can be prepared after the reaction is completed. Optionally, the enclosed reaction container has an oxidizing gas inlet or has an oxidizing gas inlet and a generation gas outlet simultaneously. The oxidation reaction rate is raised, the oxidation reaction time is shortened, the manganic manganous oxide crystal growth integrality is raised, the crystal defect is reduced, and high purity and high quality are obtained.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Continuous wet oxidation process for degrading high concentration organic waste water and equipment thereof
PendingCN106348421AEasy to handleSave spaceSpecific water treatment objectivesWater contaminantsHigh concentrationEnergy consumption
The invention discloses a continuous wet oxidation process for degrading high concentration organic waste water, belonging to the field of water treatment. The continuous wet oxidation process for degrading high concentration organic waste water comprises the procedures: a waste water pressurizing procedure: pressurizing waste water to be treated; a waste water heat exchange procedure: carrying out direct and / or indirect heat exchange on the pressurized waste water and treated waste water so the temperature of the pressurized waste water rises; an oxidizer pressurizing procedure: pressurizing an oxidizer; a mixing procedure: thoroughly mixing the pressurized and heated waste water with the pressurized oxidizer; a reaction procedure: causing the mixed waste water and the oxidizer to generate oxidation reaction, obtaining the treated waste water and generating gas; and a separation procedure: continuously separating the treated waste water from gas. The continuous wet oxidation process for degrading high concentration organic waste water has the advantages of high efficiency, less energy consumption, stability of operation and the like.
Owner:羿太环保科技(上海)有限公司
New type purification filtering material
InactiveCN1824380AEfficient removalSimple structureOther chemical processesLighting and heating apparatusMolecular sieveChemistry
The present invention belongs to the field of air purification and water purification technology. Its technical scheme is characterized by that it utilizes various adsorption materials (such as various active carbons, molecular sieves, zeolites, silica gels and active carbon fibre, etc.) with high specific surface area and high-valent oxides of Mn (such as various MnO2 and Mn2O3, etc.), and makes them undergo the processes of mixing and stamping to obtain various filter materials (including plates type, cabinet type, column type and granules type, etc.). The polluted air (or sewage) can be passed through said filter material, the pollutant can be adsorbed on the material surface by adsorbing agent, after the pollutant is oxidated by oxide of Mn, it can be converted into CO2 and H2O, and the adsorbing agent can be regenerated, so that said invention can high-effectively purify air or sewage.
Owner:刘阳生 +1
Non-manganese element-containing trimanganese tetraoxide complex, preparation method, used reaction system and uses thereof
ActiveCN107540021AImprove solubilityImprove dissolution rateHybrid capacitor electrodesCell electrodesGeneration rateReaction rate
The present invention relates to a preparation method and a preparation system of a trimanganese tetraoxide complex. The preparation method comprises: introducing micro-nano gas bubbles into a reaction liquid mixture containing a manganese source and a non-manganese element-derived raw material to obtain a reaction liquid-gas mixture, and carrying out a reaction to obtain a non-manganese element-containing trimanganese tetraoxide complex, wherein the micro-nano gas bubbles contain oxidizing gas, can be introduced along with a solvent, can be directly introduced along with the reaction mixture,can be continuously introduced, and can further be introduced in one time. According to the present invention, by introducing the micro-nano gas bubbles containing the oxidizing gas into the reactionsystem containing the manganese source and the non-manganese element-derived raw material, the oxidation reaction rate is improved, and the oxidation reaction time is shortened; and the generation rate of the trimanganese tetraoxide complex is increased, the particle size of the trimanganese tetraoxide complex is reduced, and the develop integrity of the trimanganese tetraoxide complex crystal and the mixing uniformity of the complex are improved.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Process for producing alkyl aromatic hydroperoxide
InactiveCN101003505AIncrease the rate of oxidation reactionsOxidation reaction rate is stableOrganic compound preparationPeroxy compound preparationWater solubleOxygen
A process for producing an alkyl aromatic hydroperoxide, which comprises oxidizing an alkyl aromatic compound with an oxygen-containing gas in the presence of a water-soluble iron compound, wherein a concentration of the iron compound in the oxidation reaction system is 0.0001 to 10 ppm by weight in terms of iron metal.
Owner:SUMITOMO CHEM CO LTD
Preparation method and used reaction system of trimanganese tetraoxide, and uses of used reaction system
ActiveCN107540022AGuaranteed SolubilityGuaranteed dissolution rateManganese oxides/hydroxidesMicro nanoGeneration rate
The invention relates to a preparation method and a preparation system of trimanganese tetraoxide. The preparation method comprises: introducing micro-nano gas bubbles into a reaction liquid mixture containing a manganese source to obtain a liquid-gas mixture containing the micro-nano gas bubbles and the reaction liquid mixture, and carrying out a reaction to obtain trimanganese tetraoxide, wherein the micro-nano gas bubbles contain oxidizing gas, and the average valence of the manganese in the manganese source is less than 8 / 3. According to the present invention, by introducing the micro-nanogas bubbles containing the oxidizing gas into the reaction system containing the manganese source, the oxidation reaction rate is improved, and the oxidation reaction time is shortened; and the generation rate of the trimanganese tetraoxide is increased, the particle size of the trimanganese tetraoxide is reduced, the develop integrity of the trimanganese tetraoxide crystal is improved, and the defect of the crystal is reduced.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Hollow core-shell structure catalyst for catalytic oxidation of nitrogen oxide and preparation method of hollow core-shell structure catalyst
ActiveCN111545193AReduce exposureExtended service lifeGas treatmentDispersed particle separationPtru catalystNitrogen oxides
The invention discloses a hollow core-shell structure catalyst for catalytic oxidation of nitrogen oxide and a preparation method of the hollow core-shell structure catalyst. The catalyst is a gamma-MnO2@MOx catalyst with a hollow core-shell structure, which is obtained by taking gamma-MnO2 of a hollow structure as a catalyst core and coating a mesoporous structure metal oxide MOx shell with a certain mass fraction on the catalyst core. The invention also discloses a preparation method of the catalyst. The hollow core-shell structure catalyst obtained by the method has the multi-functional advantages of high activity at low temperature, strong poisoning resistance and good stability, and has the advantages of simple preparation process, low raw material cost and good industrial applicationprospect.
Owner:XI AN JIAOTONG UNIV
Use of pyridine quaternary ammonium salt type alkaline or alkalescent polymer membranous
InactiveCN101328275AIncrease the rate of oxidation reactionsEliminate penetrationFuel cell detailsPolymer scienceAlcohol fuel
The invention discloses a quaternary pyridine salt type alkaline or weak alkaline polymer membrane, which is used as a membrane material of a direct alcohol fuel cell. The quaternary pyridine salt type alkaline or weak alkaline polymer membrane is produced from polymer materials which are subjected to membrane formation, quaternization reaction and alkalization reaction. The polymer materials are polymer materials produced by pyridine quaternization and a blend prepared from the polymer materials and polyvinylidene fluoride, bisphenol A polyether sulfone, polyether-ether-ketone, polyether sulfone, polyethersulfoneketone, poly(phthalazinone ether ketone), poly(phthalazinone ether sulfone) or poly(phthalazinone ether sulfone ketone) and so on which are blended. A direct methanol fuel cell (AMDMFC) adopting the quaternary pyridine salt type alkaline or weak alkaline polymer membrane works under alkaline or weak alkaline conditions, has the advantages of improving the oxidation reaction rate of methanol, eliminating the methanol permeation caused by electric dragging, widening the selection range of catalysts (including the catalysts of anodes and cathodes) and cell materials, simplifying water management and so on.
Owner:SHANDONG UNIV OF TECH
Method and reaction system for producing low-sulfur petroleum coke
ActiveCN111363588AReduce sulfur contentReduce dosageTreatment with plural serial refining stagesPtru catalystPetroleum coke
The invention relates to a method and a reaction system for producing low-sulfur petroleum coke. The method comprises the following steps: (1) uniformly mixing a residual oil raw material with a diluting solvent, adding an oil-soluble oxidation catalyst and an oxidant, and carrying out a reaction, so that the sulfur-containing compound in the residual oil is oxidized into sulfone and sulfoxide; (2) distilling the residual oil after the oxidation reaction to remove the diluting solvent; and (3) feeding the oxidized residual oil into a delayed coking reactor, decomposing the sulfone and the sulfoxide to generate sulfur oxide under a delayed coking condition, and feeding the sulfur oxide into a cracking gas phase to obtain a low-sulfur petroleum coke product and sulfur-containing cracking gas. The method provided by the invention can be used for producing low-sulfur petroleum coke, wherein the sulfur content in the petroleum coke can be reduced by more than 50%, and the sulfur in the petroleum coke is transferred into a gas phase so as to be recycled, so that the requirement of environmental protection is met; and an oil-soluble metal catalyst is adopted, so that the catalyst dosage is small, the catalytic efficiency is high, the catalyst does not need to be separated after reaction, and the technological process is simplified.
Owner:CHINA PETROLEUM & CHEM CORP +1
MoS2/schwertmannite Fenton composite catalyst, and preparation method and application thereof
ActiveCN109999844AIncrease profitIncreased degradation ratePhysical/chemical process catalystsWater treatment compoundsX-rayWastewater
The invention discloses an MoS2 / schwertmannite Fenton composite catalyst, and a preparation method and application thereof, and belongs to the field of water treatment. The structure of the compositecatalyst is as follows: MoS2 with a lamellar structure is distributed on the surface of sphere-shaped schwertmannite. In an X-ray diffraction (XRD) pattern of the catalyst, characteristic diffractionpeaks of schwertmannite exist at positions of 26.26 degrees, 35.16 degrees, 46.53 degrees and 61.34 degrees, and characteristic diffraction peaks of MoS2 exist at positions of 14.38 degrees, 32.67 degrees, 35.87 degrees, 39.53 degrees, 49.79 degrees, 58.33 degrees and 72.79 degrees. The composite catalyst can accelerate circulation of Fe<3+> / Fe<2+> in a Fenton-like oxidation reaction under illumination and light-shielding states, and oxidation reaction efficiency is promoted. The invention further provides the preparation method of the catalyst and application of the catalyst in the field of wastewater treatment.
Owner:NANJING AGRICULTURAL UNIVERSITY
Preparation method of tetrabutylthiuram disulfide used as rubber vulcanization accelerator
ActiveCN104326956AIncrease the rate of oxidation reactionsIncrease concentrationOrganic chemistrySulfonateVulcanization
The invention relates to a preparation method of tetrabutylthiuram disulfide used as a rubber vulcanization accelerator. By virtue of the preparation method, tetrabutylthiuram disulfide is prepared by a two-step process, namely sodium dibenzyl amino sulfonate is prepared from dibenzylamine, carbon disulfide and sodium hydroxide and then oxidized by a hydrogen peroxide oxidant to prepare tetrabutylthiuram disulfide. According to the preparation method, carbon disulfide is excessive, so that dibenzylamine is fully reacted; excessive unreacted carbon disulfide is separated and recycled in time; the production cost is reduced; the pollution to the environment is low; low-concentration hydrogen peroxide with a concentration of 5-20wt% is used as the oxidant and applied to the oxidation reaction; hydrogen peroxide has the characteristics of being low in cost, stable in property, small in pollution, easy to store and transport and high in safety; the cost can be effectively reduced; the pollution to workers in the operation process is alleviated; the safety is improved; meanwhile, the oxidization effect is not reduced.
Owner:山东斯递尔化工科技有限公司
Composite catalyst of MoS2/defective MIL-100 (Fe) and preparation method and application thereof
ActiveCN111659468AOvercoming Mass Transfer Limiting ProblemsWide pH rangeWater treatment compoundsOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystMaterials science
The invention discloses a composite catalyst of MoS2 / defective MIL-100 (Fe) and a preparation method and application thereof. According to the composite catalys, MIL-100 (Fe) grows on MOS2 in situ toobtain a MoS2 / MIL-100 (Fe) material, the MoS2 / MIL-100 (Fe) material is activated at a high temperature to obtain the composite catalyst, the composite catalyst is formed by bonding MOS2 and MIL-100 (Fe), and the mass ratio of MOS2 to MIL-100 (Fe) is 0.2-0.8: 1. According to the composite catalyst, the reduction effect of Mo < 4 + > is utilized; meanwhile, the iron-based active component exposed bythe defective MIL-100 (FE) is utilized, good physicochemical properties of MoS2 and the defect type MIL-100 (Fe) are considered at the same time; a favorable way is provided for diffusion of pollutant molecules and H2O2 molecules in a Fenton-like system; the defect that the promotion effect of MoS2 composite catalysts on Fenton-like compounds in the prior art needs to depend on light conditions is overcome, the oxidation reaction promotion efficiency is improved, the pH application range is wide, and good catalytic degradation performance is still kept under the neutral pH condition.
Owner:NANJING NORMAL UNIVERSITY
Petroleum sulfoxide and preparation method thereof
InactiveCN105017100AIncrease the rate of oxidation reactionsReduce harmOrganic chemistryOrganic compound preparationSolventChemistry
The invention relates to a petroleum sulfoxide and a preparation method thereof. The preparation method includes: taking high-sulfur crude oil with a sulfur content of greater than 2% as the raw material, collecting fraction through true boiling point distillation cutting, taking H2O2 and MnSO4 as the oxidation system to oxidize the collected fraction at room temperature so as to obtain a petroleum sulfoxide crude product, and using benzenesulfonic acid and cyclohexane as the extraction agent for purification of the petroleum sulfoxide crude product so as to finally obtain the petroleum sulfoxide. According to the invention, H2O2 and MnSO4 are adopted as the oxidation system, wherein H2O2 serves as the oxidizing agent and MnSO4 serves as the catalyst. The oxidation system can accelerate the oxidation reaction rate of crude oil fraction, shorten the reaction time, and lower the oxidation reaction temperature so as to save energy consumption. Cyclohexane with low toxicity to human is employed as the solvent so as to reduce the harm of toxic solvent to human and environment, thus being beneficial to environmental protection. The fraction cut by true boiling point distillation has high petroleum thio-ether content, and is conducive to improving the preparation efficiency of petroleum sulfoxide.
Owner:XIAN THERMAL POWER RES INST CO LTD
Method for preparing carbon aerogel catalyst supporting atom-scale noble metals
PendingCN110170322AIncrease profitUniform size distributionGas treatmentDispersed particle separationCarbonizationAlkaline catalyst
The invention discloses a method for preparing a carbon aerogel catalyst supporting atom-scale noble metals. A carrier consists of carbon aerogel, atom-scale noble metals are supported, and the noblemetals are one or more of Pd, Pt, Au and Ag. The method comprises the following steps: firstly, preparing RF (Resorcinol Formaldehyde) organic aerogel, namely preparing the RF organic aerogel from formaldehyde (F) and resorcinol (R) in the presence of an alkali catalyst by using a sol-gel method; secondly, preparing carbon aerogel, namely carrying out high-temperature carbonization on the RF organic aerogel so as to obtain the carbon aerogel; and finally preparing the carbon aerogel catalyst, namely mixing the carbon aerogel with a metal precursor solution, and preparing the catalyst by usinga deposition-settling method. As metals are dispersed onto the carrier on an atom scale, the catalyst prepared by using the method is good in catalysis effect and can be applied to normal-temperaturecatalytic degradation of volatile organic compounds (VOCs) gases.
Owner:TIANJIN UNIV
Preparation method and application of iso-phosphorus-manganese-iron-ore type iron phosphate
ActiveCN112723330AReduce contentPromote productionCell electrodesWaste accumulators reclaimingPregnant leach solutionLithium iron phosphate
The invention belongs to the field of battery material recovery, and discloses a preparation method and application of iso-phosphorus-manganese-iron-ore type iron phosphate, and the method comprises the following steps: mixing lithium iron phosphate with a solvent, adding an acid solution, and adjusting the pH value to be acidic to obtain an acidic lithium iron phosphate solution; and adding a transition metal additive into the acidic lithium iron phosphate solution, strengthening the microenvironment, carrying out leaching reaction, and conducting filtering to obtain iso-phosphorus-manganese-iron-ore type iron phosphate and a lithium-rich solution. According to the method, lithium iron phosphate and water are mixed, acid is added to maintain the pH to be 2-6, then a nickel-cobalt-manganese transition metal additive is added through a microenvironment strengthening method to achieve a surface catalytic enhancement reaction, generation of hydroxyl radicals is promoted, the oxidation reaction rate of ferrous iron is greatly increased, and therefore selective leaching of lithium under the oxygen / air condition is achieved; and the leaching rate of lithium in the leachate reaches 90.5-99.9%, and the content of iron and the content of phosphorus in the leachate are both lower than 0.1 ppm.
Owner:GUANGDONG BRUNP RECYCLING TECH +2
Method for separating and recycling iridium from iridium-containing waste catalyst
InactiveCN106337132AReduce manufacturing costIncrease the rate of oxidation reactionsProcess efficiency improvementChemistryDecomposition
The invention relates to a method for separating and recycling iridium from an iridium-containing waste catalyst. The method comprises the six steps of roasting pretreatment, acid leaching, high-temperature oxidation, iridium trioxide decomposition, reduction, acid pickling and water washing. A strong oxidant is used for treating and recycling metal iridium from the iridium-containing waste catalyst, the strong oxidant O3 produces O2 through ultraviolet irradiation, the production cost is reduced, the oxidation reaction speed is reduced, the period is shortened, the technology is simple, and the method is environmentally friendly and high in iridium recycling rate.
Owner:GUIYAN RESOURCE YIMEN
Composite catalytic oxidation treatment system for high-salinity wastewater
ActiveCN112573624AImprove removal efficiencyImprove performanceWater/sewage treatment by irradiationWater/sewage treatment with mechanical oscillationsUltravioletCatalytic oxidation
The invention relates to a composite catalytic oxidation treatment system for high-salinity wastewater, belonging to the technical field of wastewater treatment. The composite catalytic oxidation treatment system for high-salinity wastewater comprises an electrolytic cell, wherein electrolytic electrodes are arranged in the electrolytic cell in parallel; a positive electrode of a power supply is connected with an anode plate; a negative electrode of the power supply is connected with a cathode plate; ultrasonic vibration rods are vertically fixed between the anode plate and the cathode plate,and two polar plates are arranged between every two ultrasonic vibration rods; the peripheries of ultraviolet lamp tubes are sleeved with quartz sleeves; the quartz sleeves are perpendicular to the ultrasonic vibration rods and fixed between the polar plates; the ultraviolet lamp tubes are transversely arranged between the two polar plates or the multiple polar plates; and one ends of the quartz sleeves are opened to facilitate air entering, and the other ends of the quartz sleeves are sealed by air pipes and connected with perforated air distribution pipes arranged at the bottom of the electrolytic cell through an induced draft fan. The system is simple in structure; the effects of an electrolytic catalytic oxidation device, an ultrasonic device and the ultraviolet lamps are comprehensively utilized; the treatment efficiency of the high-salinity wastewater is high; comprehensive treatment effect is excellent; cost is low; and industrial application is facilitated.
Owner:山东锐海环境科技有限公司
Method for preparing spherical active cardon with base of asphalt riched in mesopores
InactiveCN1247453CIncrease the rate of oxidation reactionsInhibition of contractionCarbon compoundsWorking-up pitch/asphalt/bitumenActivated carbonPetroleum
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
A kind of reaction device and method for preparing benzoic acid and benzaldehyde by direct oxidation of toluene
InactiveCN104907008BReduce backmixingStrong process controllabilityOrganic compound preparationCarbonyl compound preparationBenzoic acidBenzaldehyde
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Flue gas desulfurization system
InactiveCN108905551AIncrease contact areaPromote desulfurization reactionCombination devicesGas treatmentSulfurFlue gas
The invention discloses a flue gas desulfurization system. The flue gas desulfurization system comprises an absorption tower, a wet type electric dust collector, a dehydrating unit and a circulating unit, wherein the absorption tower further comprises a slurry tank which is arranged at the bottom layer of the absorption tower, a flue gas inlet for introducing flue gas into the absorption tower, aspraying device arranged above the flue gas inlet, and a flue gas outlet which is formed in the top of a desulfurization tower. Through the absorption effect of the absorption tower, further dust removal is performed through the wet type electric dust collector, so that a sulfur component and other harmful components in the flue gas are removed, and a second product generated by absorption effectof the absorption tower is processed. Compared with the prior art, the flue gas desulfurization system can improve desulfurization efficiency, reduces corrosion loss in desulfurization reaction, can recycle wastewater generated in a recycling process, and is environmentally friendly and energy-saving.
Owner:百色皓海碳素有限公司
Oxidation method of hydrogen peroxide production process
ActiveCN106892408AImprove mass transfer coefficientIncrease the rate of oxidation reactionsPeroxides/peroxyhydrates/peroxyacids/superoxides/ozonidesDecompositionAnthraquinone process
The invention discloses an oxidation method of a hydrogen peroxide production process. The method comprises: firstly, contacting a hydrogen-peroxide-producing hydrogenated liquid in an anthraquinone method with an oxygen-containing gas in a preprocessor to form an intermediate association complex; then performing a corresponding oxidation reaction on a material containing the intermediate association complex, according to the hydrogenation effect and the tetrahydroanthraquinone content; and finally allowing the oxidation product to undergo gas-liquid separation and to be led out of an apparatus for the next process. The method allows the hydrogenation reaction to reach proper standing time, so that the oxidation reaction rate is greatly increased, decomposition of hydrogen peroxide is reduced, complete oxidation time is shortened, and the oxidation yield is improved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Water area rescue dry-type rescue garment
PendingCN113615903AIncrease the rate of oxidation reactionsNot dangerousBody suitsProtective garmentNeopreneBody movement
The invention discloses a water area rescue dry-type rescue garment which comprises a waterproof breathable layer, a wear-resistant layer, a chloroprene rubber layer and an elastic rope. The wear-resistant layer is sewn on the inner side of the waterproof breathable layer, the chloroprene rubber layer is sewn at the neckline and cuff positions of the waterproof breathable layer, and the elastic rope is sewn at the waist position of the waterproof breathable layer. A heating assembly is also included and is sewn on the inner side of the wear-resistant layer, and the waterproof breathable layer, the wear-resistant layer and the heating assembly jointly form a dry type rescue garment main body. In actual use, the water area rescue dry-type rescue garment can perform self-heating, continuously provide heat for rescue workers and ensure that the body temperature always meets the body movement requirement, meanwhile, the anti-collision capacity of the chest of a user can be improved, the user can carry a life jacket without holding the life jacket by hand, search and rescue work is not hindered, and when buoyancy provided by the rescue garment is insufficient, rapid inflation can be carried out so that the buoyancy of the rescue garment is improved, and the rescue requirements of rescue workers are met.
Owner:万舟救生装备(东台)有限公司
Method for extracting Cr from Cr-containing material by liquid-phase oxidation
InactiveCN109399715AImprove conversion rateIncrease reaction rateChromates/bichromatesReaction rateResource utilization
The invention provides a method for extracting Cr from a Cr-containing material by liquid-phase oxidation. The method comprises the steps as follows: Cr is extracted from the Cr-containing material bythe liquid-phase oxidation, and the Cr-containing material is pretreated before Cr is extracted from the Cr-containing material by the liquid-phase oxidation; the Cr-containing material and alkali are subjected to abrasive treatment and roasting in sequence. According to the method, the Cr-containing material is pretreated, so that reaction rate of Cr is increased, Cr conversion rate is increased, reaction temperature is reduced, reaction time is shortened, Cr content of leaching residues is reduced, resource utilization rate is increased, and production cost is reduced.
Owner:HUBEI ZHENHUA CHEMICAL CO LTD
A kind of liquid phase oxidation method of cyclohexane
ActiveCN101293810BHigh selectivityGuaranteed selectivityOrganic compound preparationPreparation by hydrogenationCyclohexanoneMicroreactor
Owner:CHINA PETROLEUM & CHEM CORP +1
Catalytic oxidation process device and catalytic oxidation process method for magnesium sulfite
PendingCN111054279APlay a circulating stirring roleIncrease reaction rateMagnesium sulfatesChemical/physical processesPtru catalystPhysical chemistry
The invention relates to the technical field of chemical engineering, and discloses a catalytic oxidation process device for magnesium sulfite. The process device comprises a pulping device, an oxidation device, an evaporation device, a crystallization device and a collection device which are sequentially connected through pipelines, a granular catalyst is arranged in the oxidation device in bulk,the catalyst is in a free suspension state in a reaction solution, and a reflux device communicated with the bottom and the side part of the oxidation device is arranged on the outer side of the oxidation device and is used for stirring the reaction solution in the oxidation device. The process device is reasonable in design, all the devices are connected in series, the magnesium sulfite can be efficiently catalyzed and oxidized to generate magnesium sulfate, magnesium sulfate heptahydrate is finally prepared through evaporation concentration and cooling crystallization, the operation efficiency is high, and energy consumption is low; and a catalytic oxidation process method for the magnesium sulfite, provided by the invention, is simple and feasible, mild in reaction condition, low in energy consumption, short in reaction period, low in operation cost and suitable for promotion and application.
Owner:广东雪迪龙环境科技有限公司
Treatment method of landfill leachate
ActiveCN114212921AHigh removal rateControls are responsiveWater/sewage treatment by irradiationWater treatment compoundsHydration reactionPersulfate
The invention relates to a landfill leachate treatment method, which belongs to the technical field of wastewater treatment, and comprises the following steps: 1, adjusting the pH value of landfill leachate to obtain pH-adjusted wastewater; step 2, adding an iron-carbon filler into the wastewater subjected to pH regulation, and then adding ferrous sulfate heptahydrate and hydrogen peroxide to obtain wastewater subjected to oxidation treatment; 3, aerating the wastewater subjected to oxidation treatment to obtain wastewater subjected to aeration treatment; step 4, adding a flocculating agent and a coagulant aid into the wastewater subjected to aeration treatment for flocculating settling, and filtering to obtain filtrate; and 5, adjusting the pH value of the filtrate, adding persulfate into the wastewater under the conditions of ultraviolet light irradiation activation and ozone aeration, carrying out an oxidation reaction, and discharging. According to the method, the removal rate of organic matters is increased through an iron-carbon micro-electrolysis-Fenton and ozone-ultraviolet-persulfate two-round composite oxidation process; and the modified anionic polyacrylamide coagulant aid is introduced, so that the flocculation effect is improved.
Owner:中新联科环境科技(安徽)有限公司
Method for preparing benzaldehyde catalyst through catalytic oxidation of benzyl alcohol
InactiveCN107983412AUniform porosityLarge specific surface areaOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsSupercritical dryingPolymer science
The invention discloses a method for preparing a benzaldehyde catalyst through catalytic oxidation of benzyl alcohol. The method comprises the following steps: taking La2O3@COF, epoxypropane, hydrochloric acid, deionized water, absolute ethyl alcohol, La2O3, benzidine and anhydrous THFA as main raw materials, preparing La2O3@COF aerogel particles by adopting a supercritical CO2 drying technology,preparing wet gel by adopting a simple sol-gel method, and preparing the aerogel particles with uniform pores and high specific surface area by adopting the supercritical drying technology. Accordingto the method disclosed by the invention, the preparation process is novel, raw material cost is low, application range is wide, a normal pressure drying method can be used, a supercritical drying process can also be used, and the obtained catalyst has excellent catalytic performance on the oxidation reaction of benzyl alcohol.
Owner:XUZHOU NORMAL UNIVERSITY
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