Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

2737results about How to "Thorough response" patented technology

Hydrolyzation separation apparatus for methyl acetate and technique

The invention provides a hydrolyzing and separation device of methyl acetate and a technique method thereof, which more particularly relates to a novel technique to catalyze and hydrolyze methyl acetate by a reaction bulkhead distillation tower, which can organically combine reaction process, product separation and recovery of no reactant into the tower. A separator extending from the upper part of the tower to the lower part of the tower is arranged on the vertical direction in the conventional distillation tower, the upper part of one side of which is covered and the other side of which is filled with a catalyst; therefore, the inner space of the reaction bulkhead distillation tower is divided into five regions with different functions. The hydrolyzing and separation device of methyl acetate can fully unleash the advantage of bulkhead tower and reaction distillation, and can cause hydrolysis reaction, product separation and recovery of non reactant to be realized in the same tower. The device provided by the invention and the technique process thereof can obtain the methyl acetate with 60 percent to 99.99 percent hydrolysis rate and products with high purity, restrain side effect effectively, reduce the volume of equipment markedly, simplify process, and reduce energy consumption and operation cost.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Vanadium slag treatment method capable of saving energy and reducing emission

InactiveCN102086487ARelieve the pressure of dephosphorizationEnergy savingProcess efficiency improvementWater solubleOxide
The invention belongs to the field of rare metal extraction, and particularly relates to a vanadium slag treatment method capable of saving energy and reducing emission. The method comprises the following concrete steps: first, placing high-temperature liquid vanadium slag with the temperature of higher than 1200 DEG C, which is separated from molten iron, in a slag tank; then, adding a sodium compound into the slag tank according to the grade of the vanadium slag; and supplying oxygen to the slag tank with a water-cooling supersonic speed or subsonic speed oxygen lance to produce a strong oxidizing atmosphere while realizing a stirring effect to promote quick generation of water-soluble sodium vanadate in the vanadium slag, wherein in order to ensure that the supplied oxygen is more than the oxygen required for totally oxidizing all components in the slag into the highest-valence oxides, FeO/T.Fe in the slag is taken as an index for checking the oxidation degree, V2O5 generated in the vanadium slag reacts with the added sodium compound to generate the water-soluble sodium vanadate, and finally the obtained slag containing the water-soluble sodium vanadate is treated to obtain V2O5. The method provided by the invention realizes vanadium extraction and steelmaking at the same time; and by adopting the method, tremendous economical and environmental benefits can be produced.
Owner:UNIV OF SCI & TECH BEIJING +1

Process and device for smelting copper by pulsation vortex method

The invention relates to a process and a device for smelting copper by a pulsation vortex method. The process comprises the following steps of: mixing dry copper concentrate powder or matte powder with oxygen-enriched air, and putting the mixture in a reactor to form high-speed vortex taking an axis as a center; introducing pulsation oxygen into the center of the high-speed vortex, performing pulsation combustion to generate pulsation turbulent flow in the high-speed vortex so as to promote particles to collide with one another, then forming a pulsation vortex reaction area with a high-temperature field, a high oxygen field and a high particle field, and completing a reaction of manufacturing the matte and slag from the copper concentrate or manufacturing crude copper and slag from the matte; after the reaction, precipitating fused materials in a fusing pool at the bottom of the reactor, and then separating the matte and slag or the crude copper and slag; and sending SO2 gas fume to an acid preparation process. The process and the device have the advantages of: 1, high reaction efficiency, high oxygen utilization efficiency and low fume yield; 2, high capacity, low energy consumption, small reaction space, centralized heat energy reacted, low loss of a refractory material of a furnace body, no need of a huge metallurgical hearth and low investment cost; and 3, environmental protection and simple, convenient and reliable technological operation.
Owner:YANGGU XIANGGUANG COPPER

Rapid preparation methods of graphene oxide and graphene

The invention provides a preparation method of graphene oxide. The method comprises the following steps: firstly, mixing graphite, an intercalator and an oxidizing agent under an airtight condition and then carrying out a reaction to obtain a reaction mixture; separating the reaction mixture obtained in the previous step to obtain a reaction product; finally, stripping the reaction product, obtained in the previous step, in a dispersing agent to obtain graphene oxide dispersion liquid. According to the preparation method, the intercalator is inserted into the parts among graphene sheet layers under the action of pressure and under the airtight condition, so that the acting force among layers is reduced, and the distances among the layers are increased; then, the oxidizing agent enters the parts among the graphene sheet layers and has an oxidation reaction, so that the graphene oxide is formed; due to the action of the pressure, the intercalator and the oxidizing agent are enabled to enter the parts among graphene layers more rapidly, and the reaction is promoted to be completed within a short time, so that first-order intercalating for the graphite is realized; furthermore, the preparation method is less in energy consumption in a reaction process, environmentally-friendly, convenient and fast to operate as well as safe and controllable, thus being more suitable for industrial mass production.
Owner:SHANDONG OBO NEW MATERIAL CO LTD

Comprehensive recovery method of zinc oxide fume dust

The invention relates to a comprehensive recovery method of zinc oxide fume dust. The method comprises the following steps: 1. performing alkali-washing on zinc oxide fume dust with Na2CO3 and NaOH in different stages: in the first stage of alkali wash, evenly mixing the zinc oxide fume dust and solid Na2CO3, adding water, stirring at high speed to dissolve the solid into solution with slag, and filtering to obtain first-stage alkali wash liquid and alkali wash slag; in the second stage of alkali wash, adding solid Na2CO3 and NaOH into the first-stage alkali wash slag, adding water, stirring to dissolve the solid, regulating the pH value, and filtering to obtain second-stage alkali wash liquid and alkali wash slag; and carrying out neutral leaching on the second-stage alkali wash slag, purifying and electrodepositing to obtain electric zinc; 2. leaching, displacing and the like to process the low temperature purified slag to obtain sponge cadmium; and 3. processing acid leached slag to obtain coarse indium, using high-temperature high-acidity leached slag as the raw material for recovering lead, and using alkali wash liquid for recovering thallium. In the invention, metals in ZnCl2, ZnF2 and PbCl2 form carbonate solid slag, chlorine and fluorine are dissolved in solution in the form of sodium salts, the slag and the liquids are respectively processed subsequently, and the products in every stage are refined processed to comprehensively recover zinc, cadmium, lead, thallium and indium.
Owner:ZHUZHOU SMELTER GRP

Production method of high-reinforcement modified anhydrous calcium sulfate crystal whiskers

The invention discloses a preparation method of high-reinforcement modified anhydrous calcium sulfate crystal whiskers. The method comprises the following steps that: firstly, limestone powder is added into stirred water to be prepared into calcium salt aqueous emulsion; then, sulfuric acid and crystal modifiers are sequentially added into the stirred water to be prepared into sulfuric acid water solution; next, the calcium salt aqueous emulsion containing 1 mol part of Ca<2+> is added into the sulfuric acid water solution containing 2 mol parts of SO4<2-> with the temperature reaching 100 to 110 DEG C, then, morphology control agents are added, the materials are subjected to stirring and aging for 2 to 3.5 hours under the temperature condition being 110 to 120 DEG C, leaching and washing are carried out, and calcium sulfate hemihydrate crystal whisker wet products are obtained; the calcination drying finally is carried out under the temperature condition higher than 200 DEG C to obtain the anhydrous calcium sulfate crystal whiskers; and then, the surface modification treatment is carried out to finally obtain the high-reinforcement modified anhydrous calcium sulfate crystal whiskers. The preparation method has the advantages that the product quality is high, the cost is low, the preparation process is short, the reaction condition is mild, and in addition, green and environmental-friendly effects can be realized.
Owner:四川万润非金属矿物材料有限公司

Method for preparing crystal II-type ammonium polyphosphate with distribution of high polymerization degree and narrow molecular weight

The invention discloses a method for preparing crystal II-type ammonium polyphosphate with distribution of high polymerization degree and narrow molecular weight. The method comprises the following steps: putting phosphorus pentoxide and diammonium phosphate which have equal molar ratio into a malaxator which can accurately control a temperature and heated by conducting oil for mixing; under the protection of inert gas, heating the materials in the malaxator to between 100 and 250 DEG C through the circulatory conducting oil; stopping introducing the inert gas; performing ammonification on the materials and heating the materials under an atmosphere of ammonia gas till the materials are totally molten down; stopping introducing the ammonia gas; after homogenization, introducing the ammonia gas again and heating the materials; throwing a surface treating agent into the malaxator; after material throwing is completed, continuously introducing the ammonia gas, keeping warm and mixing the materials; after reaction is finished, transferring the materials to a closed vessel and reducing the temperature; simultaneously, continuously introducing the ammonia gas till the temperature of the materials is below 100 DEG C; and obtaining a finished product. The method can prepare the crystal II -type ammonium polyphosphate with the distribution of the high polymerization degree and the narrow molecular weight; and the product has the characteristics of uniform granularity shape, small water-solubility, good heat resistance, high polymerization degree, narrow distribution of molecular weight and high crystal II-type purity.
Owner:GUANGDONG JUSHI CHEM CO LTD

Steel slag treating method

The invention provides a steel slag treating method comprising the following steps of: directly mixing thermal-state revolving furnace steel slag with blast furnace slag in an arc furnace in proportion, adjusting the molten slag in the furnace into a proper temperature by virtue of the arcing of the arc furnace, and stirring the molten slag by virtue of arc disturbance, so that acidic oxide and basic oxide in the molten slag are sufficiently reacted with each other; reacting free calcium oxide and free magnesium oxide in the raw steel slag with silicon dioxide component and low-calcium calcium silicate in the blast furnace slag to generate safe calcium silicate and magnesium silicate, quenching the molten slag to form glass-state solid slag which is higher in hydration reactivity and free of short-term or long-term inflation harm, and further finely grinding the solid slag into slag powder which can be safely used for related building material as the blast furnace slag. According to the method, the damage caused by the free calcium oxide and free magnesium oxide in the steel slag can be removed, and a basis is provided for the whole use of the steel slag. The heat energy of the thermal-state molten slag can be sufficiently used, so that the energy source can be saved, the energy consumption can be reduced, the cost can be reduced, and the discharge of CO2 can be reduced, and the method is extremely high in social meaning and economic meaning.
Owner:北京联合荣大工程材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products