36results about How to "Small crystal particles" patented technology

The invention relates to a long chain paraffin hydrogenation heterogeneous condensation freezing point depressing method and a catalyst thereof and belongs to the technical field of energy. A single-section or two-section serial connection hydrogenation heterogeneous process is adopted; raw oil and hydrogen pass through a hydrogenation heterogeneous catalyst bed layer, wherein the raw oil comprises vegetable oil, Fischer-Tropsch wax oil or waste lubricating oil which are hydrogenated; and an obtained hydrogenation heterogeneous product has the characteristics of low freezing point, high cetane number and the like. An adopted hydrogenation heterogeneous condensation freezing point depressing catalyst is a molecular sieve catalyst, and comprises a molecular sieve carrier and a metal active component. The total weight of a molecular sieve is 20 weight percent to 90 weight percent of the weight of the molecular sieve carrier, and the weight of the metal active component is 0.05 weight percent to 0.5 weight percent of the total weight of the total catalyst. The process is simple, the operation is stable, the freezing point of the raw oil can be effectively reduced to 10DEG C below zero to 20DEG C below zero by selecting appropriate hydrogenation heterogeneous conditions, so that the fluidity of an oil product at low temperature is ensured, and wide industrial application prospect is realized.

The invention relates to a water treatment clarification disinfectant. The disinfectant is prepared by using 30-45 parts by weight of polyaluminium chloride, 15-25 parts by weight of attapulgite clay and 25-45 parts by weight of chlorine dioxide. The disinfectant is mainly used for clarification and disinfection of cellar water in west regions.

The invention provides a chloroacetic acid producing method and reaction equipment thereof; the producing method comprises the steps of: adding acetic acid and acetic anhydride which is equivalent to 10 to 15 percent of acetic acid into a reaction kettle, raising the temperature to 80 to 100 DEG C and keeping the temperature, introducing chlorine under normal pressure for chlorination with the aidof microwaves, distilling acetyl chloride and chloroactic acid liquid from the reaction products by the reduced pressure distillation, putting the chloroactic acid liquid into a soft container and causing the chloroactic acid liquid to crystallize naturally in shaking state. The reaction equipment comprises a reaction kettle provided with an enamel lining and a reflux condenser; the reaction kettle is internally provided with a chlorine pipe which is externally sleeved with a fluid director; a microwave generator is arranged at the end opening of the reaction kettle; an emission head of the microwave generator irradiates reactants in the reaction kettle. The invention has simple technology, safe and reliable equipment, low cost, short production period, high yield and high quality of chloroactic acid products with a purity rate higher than 99.5 percent. The invention reduces the production of an impurity of dichloroacetic acid, thus saving a separation process and being beneficial tothe environment protection.

The invention relates to a method for extracting and refining long-chain dicarboxylic acid from a fermentation liquor. The method comprises the following steps: (1) adding an alkaline pH regulator into the fermentation liquor to control the pH value of the system to be in an alkaline range, and carrying out heating; (2) carrying out filtering to obtain a fermentation clear liquid, carrying out standing and layering, and taking a water-phase clear-liquid layer; and (3) controlling the temperature of the water-phase clear liquid to be 70-85 DEG C, adding an organic solvent according to a ratio,carrying out heating to 80-90 DEG C, then adding an acidic pH regulator to control the pH value of the system to be in an acidic range, carrying out heating to 90-100 DEG C until long-chain dicarboxylic acid in the system is completely dissolved, carrying out standing and layering to separate out a water phase, filtering an organic phase and performing drying to obtain a long-chain dicarboxylic acid refined product. According to the method disclosed by the invention, the fermentation clear liquid is extracted by conventional demulsification, and the solvent extraction and acidification processes are combined and completed in one unit through temperature control, so that the operation is simplified, cyclic use of the organic solvent is realized, and large-scale production and application are easier.

The invention discloses a process of ultrasonic wave electroplating of copper foil. An electroplating solution is prepared, and cerous oxalate is added into the electroplating solution; ultrasonic cleaning with deionized water is carried out before electroplating; during electroplating, the cathode current density is 2.5A / dm3; the electroplating solution is oscillated and stirred by ultrasonic wave of 700-1200 w and 20-35 KHz. The process of the invention adopts ultrasonic wave stirring, which increases the current density, reduces concentration polarization, improves brightness, enables easy escape of hydrogen at the cathode surface, reduces burrs and pin holes, and obtains an electroplating layer with finer and uniform crystal particles.

The invention discloses mold-releasing oil for a food baking tray and a preparation method of the mold-releasing oil. The mold-releasing oil is prepared from main ingredients including plant oil, carnauba wax, soybean lecithin as well as auxiliary materials including tween 80, span 80 and nanosilicon dioxide. The mold-releasing oil is prepared from the raw materials in parts by mass as follows: 85-95 parts of the plant oil, 1-10 parts of carnauba wax, 1-5 parts of soybean lecithin, 1-2 parts of a tween 80 and span 80 compound emulsifier with the weight ratio of tween 80 to span 80 being (1:3)-(3:1) and 0.4-1 part of nanosilicon dioxide. The method comprises steps as follows: dissolution at high temperature, shock cooling, post ultrasonic treatment and cooking. The prepared mold-releasing oil is uniform, stable and free of layering in the storage process and has good fluidity at low temperature and a good wall clinging property; the preparation method has the characteristics that the preparation process is simple, preparation conditions are easy to control, adopted reagents are safe and non-toxic and the like.

The invention relates to an industrial production method of an environment-friendly yellow color lake pigment 183 for plastics and belongs to the technical field of pigment synthesis. The industrial production method comprises the following steps of: based on 2-amino-4, 5-dichlorobenzenesulfonic acid as a raw material, carrying out alkali dissolution-acidification salt forming reaction and diazo-reaction to obtain a diazotization emulsion, adding 1-(3'-sulfophenyl)-3-methyl-5-pyrazolone to the diazotization emulsion, and then carrying out coupling reaction, color lake reaction and pigmentation treatment to obtain the yellow color lake pigment 183. According to the industrial production method, a coating agent is added to carry out pigment surface treatment after the color lake reaction, so that the polarity on the crystal surface of the pigment is favorably reduced, the hydrophilicity of the pigment is reduced, and the manpower hour during unloading is shortened; and the yellow color lake pigment 183 has the advantages of bulky block, bright appearance, easiness for grinding and dispersing, high tinting strength and the like; and the obtained yellow color lake pigment 183 is good in application performance and has the heat resistant temperature of being more than 300 DEG C, the tinting strength of more than 100% close to the standard in PE (polyethylene) and PVC (polyvinyl chloride) media and the tinting strength of being 108% higher than the standard in a PVC sol medium.

A method for preparing lithium iron phosphate-lithium vanadium phosphate by a quenching method. The method comprises the following steps: well mixing a vanadium source compound, an iron source compound, a lithium source compound and a phosphor source compound according to a stoichiometric ratio of the composite material, adding a carbon source, stirring and mixing, uniformly distributing the mixture in a solvent, performing spray drying to prepare a spherical precursor mixture, calcining the precursor mixture at 500-900 DEG C in nonoxidative atmosphere for 2-48 hours, finally transferring the high-temperature powder to a low-temperature medium with a temperature of -209 DEG C-35 DEG C, quenching for 1 min-2 h so as to prepare the lithium iron phosphate-lithium vanadium phosphate composite material. The invention can prepare a composite cathode material with a high tap density and high magnification performance, and greatly improves the energy density and magnification performance of the material.

The invention discloses a polyethylene-based nanometer composite and a preparation method thereof. The polyethylene-based nanometer composite is prepared from the following components in percentage by mass: 93.7-99.7wt% of polyethylene, 0-5wt% of modified nanometer zinc oxide and 0.3-1wt% of an antioxidant. The invention also discloses the preparation method of the polyethylene-based nanometer composite. As for the polyethylene-based nanometer composite prepared by the invention, under the condition with very little addition amount of the nanometer zinc oxide, the crystalline state of a polyethylene matrix can be changed, so that the particles of crystals become smaller, and the crystalline structure is more compact; and in addition, the polyethylene-based nanometer composite has higher alternating current breakdown strength and better corona corrosion resistance, and the use range of a polyethylene material is expanded.

The invention discloses a preparation method of a tool surface coating and the prepared coating. The preparation method comprises the following steps: 1) cleaning the surface of a tool; 2) sputtering a CrN coating on the surface of the tool, wherein a target material is CrN alloy; 3) sputtering a CrAlSiN coating on the surface of the tool sputtered with the CrN coating, wherein a target material is CrAlSiN alloy, and the sputtering environment is an argon environment; 4) preparing a DLC coating on the surface of the tool treated in the step 3) to obtain a purpose coating. The preparation method of the tool surface coating and the prepared coating, disclosed by the invention, have the benefits that by utilizing a CrN transition layer, the bonding strength between the CrAlSiN coating and a tool substrate is increased; by utilizing an amorphous layer formed between the DLC coating and the CrAlSiN coating, the bonding strength between the DLC coating and the CrAlSiN coating is increased; a gradient coating with high hardness, high wear resistance and high bonding strength is formed on the surface of the hard alloy tool, so that the falling-off problem of the DLC coating in the use process of the tool is effectively solved , the friction between the tool and a workpiece material is reduced, and the service life of the coated tool is prolonged.

The invention discloses a multi-branch tube type crystallization tank. The multi-branch tube type crystallization tank comprises a tank body, a rotating shaft and a driving device. The driving devicedrives the rotating shaft to rotate, and the rotating shaft is at least partially located in the tank body. The rotating shaft is a hollow wall pipe, and a plurality of branch pipes are arranged on the part, located inside the tank body, of the rotating shaft, and each branch pipe communicates with the rotating shaft. According to the multi-branch tube type crystallization tank, ice water is injected into the rotating shaft, and the ice water flows into the branch pipes, so that the contact area for heat exchange of a sweet condensed milk semi-finished product can be effectively enlarged, cooling efficiency is improved, and production efficiency is effectively improved. In addition, uniform heat dissipation and uniform material mixing of the sweet condensed milk semi-finished product in the crystallization tank can be ensured, so that the whole stirring is soft and controllable, the size of crystallized particles can be effectively reduced, and product quality of the sweet condensed milk can be improved. Furthermore, the tank body is set to be horizontal, so that debugging and maintenance of equipment can be convenient while capacity of the tank is effectively expanded, and stirring is softer and more uniform. The multi-branch tube type crystallization tank is used for the field of crystallization processing.

The invention discloses a composite additive of a thick-specification copper foil and a production and preparing process of the composite additive. The composite additive comprises at least five compounds in DPS dimethyl-disulfide formamide sodium sulfonate, an MBT acid copper middle and low zone leveling agent, M2-sulfydryl benzimidazole, AEO fatty amine ethoxylate, PPNI hexyl benzyl amine salt, C8H17SO3K perfluorinated octyl sulfonate, macromolecule mass gelatin and hydrochloric acid. The thick-specification copper foil manufactured through the additive is more even and refined in electric crystalline particle, the copper foil has the high anti-pulling performance and extending rate performance, the anti-peeling strength is high, etching resistance is achieved, and the heat conduction and electric conduction performance after plate pressing is good; the above process is adopted, the copper foil aftertreatment process is reduced, and the production cost is saved; and in addition, the production efficiency is improved, and the extremely-high market prospect and economical value are achieved.

The invention relates to a bortezomib purification method. The bortezomib is recrystallized in ethyl acetate to prepare bortezomib at a high purity. According to the method, bortezomib production efficiency is improved, production cost is lowered, and the bortezomib purification method is suitable for mass production.

The invention discloses a high-capacity long-life battery, and relates to the technical field of storage battery material preparation. The battery is prepared from, by mass, 1000 parts of lead powder,2-3 parts of SnSO4, 3-4 parts of Sb2O3, 1-1.2 parts of polyester fibers and 2-3 parts of 4BS, the seed crystal size of the 4BS is 5-15 micrometers, the length of the polyester fibers is 3-5 mm, and the breaking strength is larger than or equal to 6.5 g / dtex. Through the reasonable matching of the components, the initial capacity of the battery is high, and the structural strength of the battery is high; meanwhile, the preparation process of a positive plate is stable in process, and the content of tetrabasic lead sulfate in positive plate lead plaster and the stability of crystal size are ensured; the content of the tetrabasic lead sulfate in the prepared positive plate lead paste is high (can reach 80% or above), crystalline particles are small, the granularity is uniform, the charging formation efficiency of a storage battery is high, the initial capacity is large, the service life is long, and the consistency of the storage battery is good.

The invention provides a carbon steel surface treatment method. The carbon steel surface treatment method comprises the following steps: the surface shot blasting treatment is performed on carbon steel; and the surface of the shot-blasted carbon steel is blackened. Compared with the prior art, the carbon steel surface treatment method effectively combines the surface shot blasting with the blackening treatment; as the shot blasting treatment is firstly performed on the surface of the carbon steel, crystal particles of blackening films formed by subsequent blackening treatment are fine, uniformand compact; through the shot blasting treatment, the self-corrosion potential of the blackening films is improved, and the self-corrosion current density is reduced; and meanwhile, through the shotblasting treatment, the resistance of the blackening films is increased, and the saline immersion resistance is higher. As the shot blasting treatment is performed before the blackening treatment, thecorrosion resistance of the prepared blackening films can be improved.

The invention relates to a beef hand-pulled noodle flavoring prepared. The flavoring comprises the following components: 10-20 parts of salt, 5-10 parts of chicken essence, 3-6 parts of white sugar, 2-6 parts of Chinese prickly ash powder, 2-6 parts of pepper, 1 -3 parts of dahurian angelica root, 1-3 parts of mashed green onion, 0.5-0.9 parts of mashed shallot, 2-6 parts of chili powder, 0.5-0.8parts of ginger powder, 0.5-0.8 parts of myrcia powder, 2-7 parts of anise powder, 1-3 parts of common fennel fruit, 0.3-0.8 parts of dried tangerine peel powder, 1-3 parts of soy sauce, 1-3 parts ofonion powder, 0.3-0.6 parts of cinnamon powder, 0.1-0.3 parts of Ferula foetida grass root, 2-6 parts of cumin powder, 1-3 parts of mashed yam, and 10-15 parts of compound soup. The hand-pulled noodles flavoring is made from a wide variety of ingredients without any additives or preservatives, so that the hand-pulled noodles flavoring has excellent nutritional value and no side effects, the whitesugar is made of powdered soft white sugar, the texture is soft and fine, and the crystal particles are fine, In a making process, about 2.5% of the conversion syrup is sprayed, and the main componentof the white sugar is sucrose, therefore, the purity of the soft white sugar is not as high as that of the white sugar, so that the white sugar has functions of sweetening and flavouring.

The invention provides a carbon steel surface treatment method. The carbon steel surface treatment method comprises the following steps: the surface shot blasting treatment is performed on carbon steel; and the surface of the shot-blasted carbon steel is blackened. Compared with the prior art, the carbon steel surface treatment method effectively combines the surface shot blasting with the blackening treatment; as the shot blasting treatment is firstly performed on the surface of the carbon steel, crystal particles of blackening films formed by subsequent blackening treatment are fine, uniformand compact; through the shot blasting treatment, the self-corrosion potential of the blackening films is improved, and the self-corrosion current density is reduced; and meanwhile, through the shotblasting treatment, the resistance of the blackening films is increased, and the saline immersion resistance is higher. As the shot blasting treatment is performed before the blackening treatment, thecorrosion resistance of the prepared blackening films can be improved.

The invention relates to a preparation method of a carbon / carbon composite material silicon carbide / molybdenum-silicon-aluminum coating. The preparation method is characterized in that: the coating is a dual-layer coating; an inner coating is SiC; and an outer coating is Mo(Si,Al). The method comprises the following specific steps of: drying a 2D C / C composite material for later use; preparing a SiC inner coating by using a liquid phase siliconizing method; and preparing a Mo(Si,Al)2 outer coating by using an embedding technology. The SiC inner coating is prepared with an embedding method, so that the thermal stresses of the embedded Mo(Si,Al)2 outer coating and the C / C composite material are reduced, and mismatch of thermal expansion coefficients is relieved; and the preparation method of the SiC / Mo(Si,Al)2 coating is easy and convenient, and is suitable for the C / C composite material. The surface of a SiC / Mo(Si,Al)2 coating sample is dense and continuous, and crystal particles in the coating are relatively small. The coating is dense and continuous, and crystal particles in the coating are relatively small.

The invention discloses a template agent-free two-step method hydro-thermal synthesis method for ultramicro A type zeolite and belongs to the technical field of preparation of ultramicro zeolite molecular sieves. Sodium metaaluminate and sodium silicate are adopted for preparing initial gel in ratio of (2-4) parts of Na2O to (0.5-1.5) parts of Al2O3 to (1-2.5) parts of SiO2:(100-150) parts of H2O, no template agent is added, aging is carried out for 20-140 hours under the conditions that temperature is 35-45 DEG C and speed is 180-300r / min, then the aged gel is placed into a reaction kettle, crystallization is carried out for 4 hours at the temperature of 100 DEG C, and ultrasound, suction filtration, washing and drying are carried out, so that the ultramicro A type zeolite is obtained. Compared with the prior art, the template agent-free two-step method hydro-thermal synthesis method for the ultramicro A type zeolite has the advantages of low preparation cost and simple operation steps.

The invention discloses a negative plate for a lead-acid battery. The negative plate comprises a negative plate grid, a three-dimensional graphene structure and a negative electrode lead plaster, the graphene structure is installed on the negative plate grid, the graphene structure is provided with a plurality of micro grids, and lead powder is arranged in the micro grids of the three-dimensional graphene structure. The negative plate for the lead-acid battery disclosed by the invention is provided with the three-dimensional graphene structure, and the graphene structure is provided with the plurality of micro-grids for placing the small parts of lead paste, so that lead is directly prevented from being in contact with a partition plate, sulfate is restrained in the micro-grids in the charging and discharging process, crystal particles are reduced, and the problem that the negative active material is softened and falls off is further solved.

The invention relates to the technical field of plastic product processing, in particular to a high-temperature-resistant PP lunch box and a manufacturing process thereof. The high-temperature-resistant PP lunch box is prepared from the following raw materials: 70-90 parts of polypropylene, 30-60 parts of PC, 20-40 parts of nano calcium carbonate, 4-8 parts of talcum powder, 4-8 parts of carbon black, 2-6 parts of stearic acid, 6-10 parts of silica powder, 6-8 parts of mica powder, 6-10 parts of lithopone, 4-6 parts of azodicarbonamide, 1-4 parts of zinc borate, 2-6 parts of maleic anhydride, 0.4-0.8 parts of a plasticizer, 0.4-0.8 parts of a flame retardant, 0.4-0.8 parts of an anti-aging agent and 0.2-0.6 parts of an antioxidant, wherein all the raw materials are calculated in parts by weight. According to the high-temperature-resistant PP lunch box, the nano calcium carbonate is added to replace active calcium, and the silica powder is added to replace modified wollastonite, so that the strength of the high-temperature-resistant PP lunch box product is enhanced, and meanwhile, the high-temperature resistance of the PP lunch box product is also improved.

The invention relates to a method for extracting and refining long-chain dicarboxylic acids from fermentation broth, comprising (1) adding an alkaline pH regulator to the fermentation broth to control the pH of the system in an alkaline range, and heating; (2 ) to obtain the fermentation clear liquid by filtration, after standing and stratifying, take the aqueous phase clear liquid layer; (3) control the temperature of the aqueous phase clear liquid at 70-85°C, add organic solvents in proportion, and raise the temperature to 80-90°C; then add Acidic pH adjuster, control the pH of the system in the acidic range, raise the temperature to 90-100°C, until the long-chain dicarboxylic acid in the system is completely dissolved, let it stand and separate the water phase, filter and dry the organic phase After that, the refined product of long-chain dicarboxylic acid is obtained. The invention combines the solvent extraction and the acid precipitation process in one unit through temperature control while extracting the fermented serum by conventional demulsification, which simplifies the operation, realizes the recycling of the organic solvent, and is easier for large-scale production and application.

The invention discloses a fabrication method for a long-service lifetime positive plate of a lead-acid storage battery. The fabrication method comprises the following steps of separately weighing and stirring lead powder for production of the storage battery, sodium perborate, polyester short fiber special for the storage battery and a superfine tetrabasic lead sulfate additive; adding pure water, performing stirring and oxidizing, and adding a sulfuric acid aqueous solution during the stirring and oxidizing process; continuously stirring and stopping stirring until a stirring temperature is lower than 47-53 DEG C to obtain lead paste; filling the lead paste on a grid to fabricate a non-cured positive plate; and introducing the non-cured positive plate in a curing chamber for curing to obtain the positive plate. The fabrication method for the long-service lifetime positive plate of the lead-acid storage battery is stable in fabrication process, the curing time of the plate is shortened, the fabricated positive plate lead paste is high in content of the tetrabasic lead sulfate, small in crystalline particle and uniform in granularity, and thus, the storage battery has the advantages of high charging formation efficiency, large initial capacity, long service lifetime and high storage battery consistency.

A blank for grinding comprises a blank body and lead, and the content of the lead is smaller than 1% of the total mass of the blank body. The manufacturing method of the green body comprises the following steps: sequentially adding a blank and lead into an electric furnace for melting, wherein the content of the lead is less than 1% of the total mass of the green body; pouring the molten liquid ofthe blank and the lead into a blank mold, and cooling and molding to form a blank body; and annealing the green body. According to the diamond grinding wheel, the firmness degree of the diamond particles embedded into the diamond grinding wheel can be improved, the blank cracking phenomenon in the grinding process is improved, and therefore the defective rate of ground objects is reduced.

The invention provides an extractive crystallization device for a traditional Chinese medicine. The extractive crystallization device comprises a first heating tank, a first crystallization tank and a second crystallization tank. Steam in the heating tank of the extractive crystallization device is condensed to enter a water tank; water in the water tank is used as a cooling medium for the first crystallization tank, and can be always recycled; a water resource is saved; the waste of the water resource is avoided. The crystallization of the extractive crystallization device is divided into two steps; a first step is crystallization; a second step is recrystallization; the cooling medium for the first crystallization tank is the water and is slow in cooling speed; a crystalline particle obtained from a liquid medicine is small; an impurity is also smaller; the liquid medicine subjected to the crystallization in the first step enters the second crystallization tank; at the moment, the concentration of the liquid medicine is lower; a cooling medium for the second crystallization tank is liquid nitrogen; in this way, the cooling speed of the liquid medicine is quickened, so that the recrystallization can be completed; the crystallization efficiency of the extractive crystallization device is high; a produced crystal of the traditional Chinese medicine is good in quality, high in purity and uniform in particle size; the convenience and the quickness are provided for a subsequent preparation process.

The invention discloses a hectogram-grade Mn-BTO energy-containing coordination polymer and a preparation method thereof. The preparation method comprises the following steps: adding an aqueous solution of an inorganic metal manganese salt into an aqueous solution of 5,5'-bistetrazolyl-1,1'-dioxygenyl salt drop by drop under stirring, wherein the mole ratios of the both aqueous solutions are equal; then continuing isothermal stirring for 1 h, carrying out cooling to room temperature after completion of a reaction; and carrying out pumping filtration and drying so as to obtain Mn-BTO crystal powder. The preparation method is simple in process flow, convenient to operate, mild in reaction conditions, good in security and capable of preparing the hectogram-grade product; and the hectogram-grade Mn-BTO energy-containing coordination polymer prepared by using the method has good safety performance, high quality, small crystal grain size and uniform particle size distribution, and is applicable as a component for an explosive, gunpowder and a propellant.

The invention relates to the field of recycling of crystallization mother liquor, in particular to a recycling device and method for troxerutin crystallization mother liquor, and the recycling device comprises a base, a crystallization circulating pump, a liquid removing mechanism, a production mechanism, a crystallization mechanism and a scraping mechanism. According to the recycling device for the troxerutin crystallization mother liquor, through the arrangement of the crystallization plates, the crystallization area where the mother liquor can be attached is effectively expanded, meanwhile, the first motor drives the sleeve to rotate, the mother liquor attached to the surfaces of the turnover crystallization plates makes rapid contact with air to be air-dried and cooled, the crystallization rate of the mother liquor is greatly increased, and the crystallization efficiency is improved. Meanwhile, the circulation rate of mother liquor is high, the amount of the mother liquor stored in the crystallization kettle is small, and therefore generation of waste liquid is effectively reduced, through cooperation of a sliding groove and a bending piece, the four sets of crystallization plates can be turned over in an oriented mode, the surfaces of the crystallization plates can be cleaned through cooperation of a scraping plate, and meanwhile under cooperation of a transmission wheel and a scraping mechanism, the efficiency is improved. The two scraping rods can clean the two sides of the scraping plate regularly, and waste is avoided.