42results about How to "Shorten the oxidation reaction time" patented technology

A reverse osmosis concentrated water treatment method comprises the following steps: (1) adopting multi-phase catalytic oxidation technique to achieve deep oxidation and maximally remove organic pollutants in wastewater; (2) adding the effluent after catalytic oxidation into an adsorption reaction tank, in which a proper amount of powdered active carbon is added, and fully reacting for a period of time by aeration or stirring and the like to adsorb organic pollutants in the wastewater, wherein the adsorption effect depends on the addition amount of the powdered active carbon; and (3) filtering the effluent after the adsorption reaction by submerged ultrafiltration to further improve the quality of the effluent, which can be discharged directly. According to the reverse osmosis concentrated water treatment method, the oxidation reaction time can be reduced and the oxidation reaction effect can be enhanced at the same time, and not only can the wastewater treatment effect be ensured but also the treatment cost is greatly lowered when the method is in combination with the powdered active carbon adsorption process. In addition, the method has the advantages of simple process flow and high operability, and is worth popularizing.

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.

The invention provides an oxidizer used in the di-chlorine quinoline acid synthesis technology, which can effectively improve the problems that the time of the oxidation operation is long, the production capacity is limited, and the generated waste acid is not easy to be processed in the prior art. The oxidizer is oxyacid of chlorine, bromine and iodine and salts thereof, and peroxide. The invention further provides a novel method for synthesizing di-chlorine quinoline acid oxo by utilizing the novel oxidizer.

The invention discloses a method for treating industrial waste water by combining Fenton oxidization and a microwave catalysis phase. The method comprises the following steps of: adjusting the PH value of the waste water to be smaller than 6; adding a Fenton reagent and uniformly stirring; ensuring that the waste water with the added Fenton reagent flows through a microwave field; and ensuring that the waste water flowing through the microwave field is subjected to solid, liquid and gas three-phase separation, and if necessary, neutralizing and separating acid in obtained liquid. In the invention, the industrial waste water is continuously treated under a flowing condition by utilizing the modes of oxidizing organic matters in the industrial waste water by using the Fenton reagent and catalyzing an oxidizing reaction process by microwaves, thus the invention has the characteristics of short treatment time, good reaction effect, high COD (chemical oxygen demand) removal rate and space saving so as to truly realize the industrial application of the Fenton method.

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.

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.

The invention relates to a production method for a normal temperature iron oxide desulfurizer, which is characterized in that the production method comprises the steps that: 1) the selection of raw materials according to mass percentage is 10-85 percent of ferrous sulfate heptahydrate, 5-80 percent of insoluble carbonate and 0.5-40 percent of metamanganate according to weight percentage, and the ferrous sulfate heptahydrate, the insoluble carbonate and the metamanganate are prepared for spare; 2) mixing: the insoluble carbonate and the metamanganate are mixed for 20-30 minutes inside a premixer, in which the ferrous sulfate heptahydrate is then fed for continuous mixing; meanwhile, the water is sprayed into the premixer for 5-20 minutes, and the quantity added of the water is 2-40 percent of the weight of the ferrous sulfate heptahydrate, the insoluble carbonate and the metamanganate, thus obtaining a mixture A; 3) stationary phase reaction: the mixture A is added into a conical shell of a stationary phase reactor through a solid material feed inlet of the stationary phase reactor and is reacted through stirring and the action of adequate oxygen, thus obtaining a mixture B; 4) the normal temperature iron oxide desulfurizer is obtained through storing, prilling and drying. The method is characterized by environment protection, energy saving, low production cost, etc.; in addition, the desulfurizer has high purifying rate for removing sulfur.

The invention provides an effluent treatment technology and system based on combination of super magnetic separation and microwave energy technology. The treatment technology comprises the following steps: S10, adding a reducing agent into the effluent, and enabling a reducing reaction to obtain a mixed liquid A; S20, adding nanoscale magnetic seed powder, a flocculating agent and a coagulant aid to the mixed liquid A, and then conducting flocculating settlement; S30, collecting the supernatant after settlement, adding an oxidizing agent and a catalyst to the supernatant, enabling oxidation reaction to obtain a mixture B; S40, further strengthening the oxidation reaction in a microwave field to obtain a mixture C; S50, adding the nanoscale magnetic seed powder, the flocculating agent and the coagulant aid to the mixture C, and conducting the flocculating settlement reaction to obtain a mixture D; S60, separating effluent, sludge and flocculated grains from the mixture D; S70, recycling the nanoscale magnetic seeds from the flocculated grains.

The invention relates to the field of preparation of oxidized wax, in particular to oxidized wax and a preparation method thereof. The method comprises the following steps: in the presence of a catalyst and an auxiliary agent, molten Fischer-Tropsch wax and oxygen-containing gas are subjected to a catalytic oxidation reaction to obtain oxidized wax, wherein the catalyst is an iron-based catalyst and/or a cobalt-based catalyst. According to the method provided by the invention, the Fischer-Tropsch wax is subjected to oxidation reaction to realize directional oxidation, so that the product distribution of the oxidized wax product is controlled, the reaction product is performed towards the target of generating more esters, and the ester-acid ratio of the oxidized wax product is increased; meanwhile, the production cost is reduced, and industrial production design is facilitated.

The invention discloses a method for preparing ellagic acid by using tara tannin. The method comprises the following steps: under the action of a jet pump, repeatedly mixing tara tannin reaction liquid with air, carrying out oxidation reaction to prepare ellagic acid, and also purifying or/and refining the crude ellagic acid product prepared by oxidation treatment to obtain high-purity refined ellagic acid. The ellagic acid prepared by adopting the method is high in yield and purity, the thermal stability of the ellagic acid is improved, the ellagic acid is prepared by combining a liquid-gas jet oxidation method and a solvent washing method, the ellagic acid preparation time is greatly shortened, the purity of the ellagic acid is obviously improved, the production efficiency of industrial production of the ellagic acid is remarkably improved, the method is suitable for industrial large-scale production of ellagic acid, and widens the application of ellagic acid in the fields of medicines and cosmetics.

The invention belongs to the technical field of medicine, and particularly discloses a method for preparing and purifying polypeptides. A method for inhibiting methionine oxidation is used in the preparation and purification process of ularitide, so that the purity of the purified refined ularitide is as high as 99.90%, and methionine oxidation impurity peptides are controlled within 0.1%.

The invention discloses a ferrous air oxidation reaction catalyst which comprises the components in parts by weight: 10-30 parts of nitrite, 10-20 parts of soluble copper salt, 2-10 parts of strong oxidization acid, 8-20 parts of a copper complexing agent, 2-8 parts of a copper ion stabilizing agent, 0.3-0.8 part of a mildew preventive and 32-49 parts of deionized water. All components in the catalyst can have reaction with ferric ions and oxygen molecules at the same time, so that the activity of a reaction process is reduced; therefore, the ferric ion oxidization reaction speed is greatly increased, and the oxidization reaction time is shortened.

The invention provides a preparation method high-purity high-yield oxysophocarpine. The method comprises the following steps: firstly heating purified water in a water bath to a certain temperature, adding hydrogen peroxide, slowly adding sophocarpine, reacting at a certain temperature till hydrogen peroxide is completely consumed, then extracting the residual small amount of sophocarpine; performing reduced pressure concentration of the reaction solution, adding alcohol substances into the concentrate for dissolution, adding alumina for decoloring, performing suction filtration; continuing to perform reduced pressure concentration, adding ketone substances for crystallization, and performing recrystallization to obtain oxysophocarpine. The process method is simple and practical, low in cost, high in purity, high in yield, and suitable for industrial production.

The invention relates to a high-softening-point asphalt preparation method suitable for asphalt-based spherical activated carbon raw materials, special asphalt with the softening point of 130-220 DEGC is used as a raw material, a synergistic effect of negative pressure extraction and thermal polymerization reaction is utilized, a double-screw extruder with a certain number of vacuumizing ports isadopted, and the molecular weight distribution, softening point, group composition and other physical and chemical properties of high-softening point coal asphalt can be adjusted by adjusting the temperature and the extrusion speed of each temperature zone of the double-screw extruder, the number, the setting positions and the vacuum degrees of the vacuumizing ports. The softening point of the prepared high softening point asphalt is 240-280 DEG C, the content of n-heptane soluble substances is lower than 10%, the content of toluene soluble substances is lower than 30%, the content of quinoline insoluble substances is higher than 35%, the content of pyridine insoluble substances is higher than 20%, and the ash content is 0.02-8%. The high-softening-point asphalt preparation method has important significance for promotion of resource reutilization of the special asphalt and the asphalt-based spherical activated carbon and related materials (such as asphalt-based foam carbon).

The invention belongs to the technical field of synthetic drugs, and particularly relates to a preparation method of hydroxycamptothecine. An acid solvent dissolves camptothecin, an oxidizing agent sodium perborate is added, the reaction liquid is subjected to vacuum concentration after a constant temperature reaction is completed, ice water is added till a crystal is completely separated out, filtration, washing and drying are conducted, and 1-deoxycamptothecine is obtained; dioxane, acetonitrile, water and concentrated sulfuric acid are added into 1-deoxycamptothecine to be dissolved and stirred, the mixture is illuminated with an ultraviolet high pressure mercury lamp, and the ice water is condensed and flows back; vacuum concentration is conducted, the ice water is added till the crystal is completely separated out, filtration, washing and drying are conducted, and a crude product is obtained; and the crude product is purified. The preparation method of hydroxycamptothecine is simple to operate, safe and economic, green and environmentally friendly, and high in total yield.