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38results about How to "Way to save energy" patented technology

Preparation method of graphene foam-polydopamine composite membrane, product prepared with preparation method and application of product

The invention discloses a preparation method of a graphene foam-polydopamine composite membrane, a product prepared with the preparation method and an application of the product. The preparation method comprises steps as follows: (1) preparation of graphene foam-polydopamine: the pH value of a graphene oxide solution is adjusted, dopamine hydrochloride is added, a precursor solution is obtained and subjected to a hydrothermal reaction, and graphene foam-polydopamine is obtained; (2) preparation of the graphene foam-polydopamine composite membrane: graphene foam-polydopamine is added to N,N-dihydroxyethylglycine and mixed with a temperature-sensitive polymer, the mixture is stirred and subjected to vacuum filtration, and the temperature-sensitive graphene foam-polydopamine composite membrane is obtained. The graphene foam-polydopamine composite membrane prepared through improvement of overall process design, reaction conditions of steps and the like of a key preparation process has good temperature sensitivity and excellent super-hydrophilic property and underwater super-lipophobicity and is very applicable to oil-water separation.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for purifying edible fungus polysaccharide by using enzyme pretreatment-microwave assisted extraction-chitosan flocculation technology

The invention relates to a method for purifying edible fungus polysaccharide by using an enzyme pretreatment-microwave assisted extraction-chitosan flocculation technology. The method comprises the following steps: adding enzyme into crushed edible fungi, mixing with water, stirring, and performing enzymolysis for a certain period of time; performing microwave radiation for a period of time, then cooling and performing suction filtration to obtain a polysaccharide extract; concentrating the extract, then adding chitosan to perform flocculation, and filtering to remove deposition after flocculation is finished, thus obtaining a purified polysaccharide solution; and drying to obtain relatively pure edible fungus polysaccharide which is tested to have good vitro antioxidation activity. According to the method provided by the invention, an enzymolysis technology is adopted to perform a certain degree of hydrolysis destruction on cell walls and intercellular substances of edible fungi at first, and then a 'body heating' characteristic of microwave is adopted to promote the dissolution of active ingredients. The method is efficient and energy-saving and can reduce the solvent consumption; and chitosan serving as a natural flocculating agent can well remove protein high polymer impurities, is good in impurity removal effect and low in cost, and cannot influence the product quality.
Owner:EAST CHINA UNIV OF SCI & TECH

Aluminum and aluminum alloy surface self-repairing and corrosion-resisting conversion coating and preparation method thereof

The invention belongs to the field of corrosion protection application of coating. An aluminum and aluminum alloy self-repairing and corrosion-resisting composite conversion coating is prepared by that a magnalium hydrotalcite layered structure is grown on an aluminum and aluminum alloy basal body, 8-chinosol for conversion is adopted for conversion, the molar concentration of 8-chinosol is 0.01 to 0.03 mol/L, PH ranges between 10.5 and 12.5, and conversion for 12 to 48 hours is performed at a room temperature. The coating ensures that the corrosion resisting performance of a metal basal body can be remarkably improved, the density of corrosion current is lowered by one order of magnitude, meanwhile, the coating has an excellent self-repairing and corrosion-resisting performance, after being soaked in 3.5 percent of NaCl for 7 days, the impedance of the converted coating is increased by one order of magnitude by compared with a coating not converted. The method adopting the scheme is simple to operate, the cost is low, the energy consumption is small, mass production can be carried out, a chromate process coating layer on an aluminum alloy surface can be replaced, and the coating and the method have a favorable application prospect.
Owner:DALIAN UNIV OF TECH

Summer and winter cold and hot water supply method for cultivation farm

InactiveCN102506521ASatisfy with salty waterSatisfies light, coldHeat pumpsWater source heat pumpWater source
The invention discloses a summer and winter cold and hot water supply method for a cultivation farm. In winter, firstly, acquired seawater and fresh water pumped from a fresh water well are mixed into mixed water; and secondly, after heat exchange, mixed water flows into condensers of two single-screw water source heat pump units in parallel and is turned into cultivation hot water after absorbing heat, after waste water formed by high-temperature water after heat exchange is mixed with fresh water pumped from the fresh water well, mixture of the waste water and the fresh water flows into a heat exchanger to indirectly exchange heat with water on evaporator sides of the two heat pump units, and circulating water in independent water systems of the evaporator sides flows into evaporators of the heat pump units in parallel after heat exchange to discharge heat. In summer, acquired seawater is mixed with fresh water pumped from the fresh water well, and then flows into the evaporators of the two heat pump units in parallel, and required cultivation cold water can be obtained after mixture of the seawater and the fresh water realizes heat discharge and is cooled; and a second channel of seawater directly flows into the condensers of the two heat pump units in parallel after being pressurized by a cooling water circulating water pump, and is drained after heat is absorbed. The method is efficient and energy-saving and is low in running expense.
Owner:TIANJIN UNIV

Multi-element mineral fertilizer taking copper smelting slag as raw material and preparation method of multi-element mineral fertilizer

The invention relates to multi-element mineral fertilizer taking copper smelting slag as a raw material and a preparation method of the multi-element mineral fertilizer, belonging to the technical field of utilization of metallurgical slag. The multi-element mineral fertilizer consists of the following components: the mass ratio of the copper smelting slag to available phosphorus substances is (1-20):1. The crushed copper smelting slag and the available phosphorus substances are mixed according to the mass ratio of (1-20):1, and the available phosphorus content of the mixture is 2.73-15%, so that the multi-element mineral fertilizer is obtained. The multi-element mineral fertilizer has various nutrients needed by crops for growth, so that the quality of the crops is improved. The multi-element mineral fertilizer can improve soil and achieves the effects of retaining fertilizer, saving fertilizer, increasing yield, improving color, improving the quality of the crops, improving the soil, retaining water and retaining soil moisture. According to the invention, the problem of the resource utilization of the copper smelting slag is solved, the resource utilization rate is increased, and the method is economical, energy-saving and environmentally friendly.
Owner:KUNMING YITANGCHUN TECH CO LTD

Production method for increasing yield of xylose

The invention discloses a production method for increasing a yield of xylose, and relates to the technical field of functional sugar production. The production method comprises the following steps of raw material pretreatment, hydrolysis, primary purification, primary concentration, glucose removal with yeast, secondary purification, condensation crystallization, and crystallized xylose mother solution utilization. According to the production method, the active yeast is added for removing glucose, so that the purity of the xylose is improved; batch treatment is performed, so that the yield of the xylose in a first batch is increased; when a feed solution in a second batch is treated, a mother solution recycling method is adopted, so that the purity of the xylose keeps in a xylose crystallization range; and partial xylose is extracted from a mother solution, so that a purpose of entirely increasing the yield of the xylose is achieved. The production method replaces a primary ion exchange resin method with an electrodialysis desalination method, so that pH (potential of hydrogen) of a sugar solution is effectively increased; and the sugar solution suitable for removing the glucose with the yeast can be obtained without value adjustment. The method is high-efficiency, energy-saving and convenient to operate, and effectively increases the yield of the xylose.
Owner:FUTASTE PHARM CO LTD

A conductive polymer polyaniline/manganese trioxide composite coating with strong adhesion and its preparation method

The invention relates to a novel preparation method of a conductive polymeric material polyaniline and preparation of its composite material, belonging to the field of material synthesis and high performance anticorrosion materials. The conducting polymer polyaniline/manganic oxide composite coating having strong adhesiveness is prepared by growing zinc oxide nanorod on a metal matrix, then coating a polyaniline/manganic oxide composite coating on the metal matrix to embed the film in the zinc oxide nanorod, wherein the polyaniline/manganic oxide composite coating is prepared by mixing polyaniline with spherical manganic oxide according to the weight ratio of 99:1-90:10; putting the mixed material in N-methyl pyrrolidone solution, conducting ultrasonic vibration, and conducting magnetic stirring reaction for 6-48h. According to the invention, the prepared material can obviously improve the corrosion resistance of the metal matrix, compared with a bare carbon steel, the corrosion rate is reduced 25 times, and the anticorrosion performance is excellent. The method has the advantages of novel method, simple operation, low cost, and low energy consumption, and is suitable for practical application and large scale production.
Owner:DALIAN UNIV OF TECH

Method for absorbing nitrogen oxide tail gas and generating by-product p-phenylenediamine by using aniline

The invention discloses a method for absorbing nitrogen oxide tail gas and generating by-product p-phenylenediamine by using aniline. The method comprises the following steps of: reacting part aniline with NOx to obtain diazonium salt; reacting the diazonium salt with the non-reacted aniline to obtain 1,3-diphenyltriazene, wherein the reaction products contain less p-nitroaniline and o-nitroaniline; making the 1,3-diphenyltriazene in a rearrangement reactor generate the rearrangement reaction at 30 DEG C-120 DEG C to convert into p-aminoazobenzene, wherein 90% of the 1,3-diphenyltriazene is converted into the p-aminoazobenzene and the remaining 1,3-diphenyltriazene is converted into o-aminoazobenzene and few impurities after the rearrangement reaction; separating the low distillates from the rearranged materials; and carrying out the hydrogenation reaction: using Raney nickel as a catalyst, continuously inputting hydrogen gas and controlling the pressure and the temperature to be 0.2MPa-4MPa and 25 DEG C-150 DEG C respectively to synthesize the p-phenylenediamine. The method provided by the invention reduces the production cost of the p-phenylenediamine and also reduces environmental pollution. A DCS (distributed control system) computer control system is used so that the automation of the whole system is realized and meanwhile the production efficiency is high.
Owner:HANGZHOU LONGSHAN CHEM CO LTD

Preparation and application of molecular-based low-temperature magnetic refrigeration material of cobalt-gadolinium cluster base

InactiveCN107527697AHigh magnetic entropy changeWay to save energyGroup 8/9/10/18 element organic compoundsInorganic material magnetismSolventSpace - property
The invention discloses preparation and application of a molecular-based low-temperature magnetic refrigeration material of cobalt-gadolinium cluster base, and belongs to the field of inorganic chemistry. Gadolinium chloride, cobalt chloride, sodium methylate and diethanol amine are adopted as raw materials, methyl alcohol is adopted as a solvent, and a self-assembly reaction is carried out at normal temperature to prepare the molecular-based low-temperature magnetic refrigeration material of the cobalt-gadolinium cluster base. The structure of the prepared low-temperature magnetic refrigeration material is characterized in that the molecular formula is [Co8Gd2(L)4(HL)4(HCOO)4(OH)2(Cl)2(CH3OH)2]2Cl-.4CH3OH.2H2O, the molecular weight is 2199.12, and according to crystallography data, the value of alpha is equal to 71.009(2)o, the value of beta is equal to 67.615(2)o, the value of gamma is equal to 65.536(2)o, the value of z is equal to 1, the material belongs to a triclinic crystal, the space property of the material belongs to P-1 space groups, and specific information is shown in the description. The material has excellent low-temperature magnetic refrigeration performance; when the temperature is 3 K, by magnetizing the material at the constant temperature, the maximum magnetic entropy change can reach 16.3 J / (kg K) when an applied magnetic field is 5T. The raw materials are easy to obtain, and the preparation method can save energy, and is convenient to operate and great in repeatability.
Owner:ANYANG INST OF TECH

Production method capable of prolonging service life of KR (Krypton) stirrer

The invention discloses a production method capable of prolonging the service life of a KR (Krypton) stirrer. The production method includes steps of manufacturing a stirring blade with a steel core into a composite body with metal and pouring materials, arranging metal steel plates on two sides of the stirring blade with the steel core and filling the pouring materials in the middle of the stirring blade with the steel core; removing impurities on the surface of the steel core, washing the steel core, drying the steel core and welding a group of anchoring parts with the size ranging from 30mm to 80mm on the surface of the steel core; fixing a mold well on the periphery of the steel core, pouring the pouring materials in the mold, then placing the mold poured with the pouring materials at room temperature until the pouring materials are hardened, and maintaining the pouring materials for 48 hours to 72 hours after the mold is removed; baking the integral KR stirrer for 36 hours to 60 hours at the temperature ranging from 100 DEG C to 150 DEG C after maintenance is completed; and continuing heating the baked KR stirrer, leading the temperature to reach a range between 320 DEG C and 350 DEG C, and maintaining the temperature for 8 hours to 16 hours. By the aid of the production method, expansion degree of the steel core is reduced, extrusion stress due to expansion of the steel core can be effectively buffered, and accordingly the amount of cracks after the KR stirrer is baked can be reduced to the greatest extent.
Owner:宜兴市瑞华工业炉科技有限公司
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