190results about How to "Clean manufacturing" patented technology

A method of producing a multi-component cigarette filter having one more filter component than the number of hoppers on the machine producing the cigarette filter rods. A dual hopper machine can produce two-component filters as well as three-component filters, and a three hopper machine can produce three-component filters as well as four-component filters.

The invention relates to a solvent-free method for preparing non-ionic water-borne polyurethane. The method comprises the following steps: firstly, synthesizing a Y-shaped side chain nonionic hydrophilic chain extender containing two terminal hydroxyl groups; secondly, reacting poly(dihydric alcohol) with isocyanate, and adding the Y-shaped side chain nonionic hydrophilic chain extender for chain extending to generate a side chain prepolymer with a -NCO terminal-group; thirdly, adding one or mixture of two of small-molecular dihydric alcohol and oligomer polyol, uniformly stirring, and immediately adding a deionized water solution to disperse at high speed; and finally heating to react to obtain a stable solvent-free nonionic waterborne oligomer emulsion. Compared with the prior art, the method has the advantage that the stable solvent-free nonionic waterborne oligomer emulsion is prepared under conditions of no additional emulsifier and little co-stabilizer.

The invention discloses a preparation method of hexamethylenediamine. The method is used for preparing 1, 6-hexamethylenediamine by virtue of carrying out ammoniation and catalytic hydrogenation on 1, 6-adipaldehyde. The method is simple in process, low in cost, high in yield, low in energy consumption and free from industrial three wastes.

The invention provides a compound chromate-free passivator capable of forming films rapidly. The compound chromate-free passivator comprises water-dilutable resin, silicon dioxide, a surfactant, a corrosion inhibitor, an accelerant and water. The chromate-free passivator provided by the invention does not contain poisonous and harmful ingredients such as heavy metal, sodium nitrite, phosphoric acid and the like, is environment-friendly, pollution-free and clean in production, and is close to passivation effect of hexavalent chromate in the aspect of comprehensive performance such as corrosionresistance and reprocessing; and the passivator sufficiently utilizes the diversity of organic high-molecular polymers and the rapid forming characteristic of inorganic salt, so that a high-performance resin and zirconium-based oxide layer compound coating can be provided for metal surfaces, compound passivation film provides a double protection function for protection of metal surfaces, and the organic coating has a clear advantage of delaying initial-stage corrosion on the metal surfaces, so as to ensure that the metal surfaces have excellent corrosion resistance and then the adhesive forceof coating is improved.

The invention relates to a preparation method of leather-imitating automobile leather. The preparation method comprises the following steps: firstly designing a PU formula according to the purpose of the automobile leather, preparing slurry, coating the slurry on a piece of release paper to finish the coating process for the first time, and heating and drying the paper to obtain a surface layer of the automobile leather; secondly, adding a bridging agent, a leveling agent, a fire retardant and a microballoon foaming agent to high solid resin to be stirred uniformly, coating the prepared material on the surface layer of the automobile leather to finish the coating process for the second time, and foaming and drying to obtain an intermediate support foaming layer; coating the slurry prepared according to the PU formula on the obtained intermediate support foaming layer to finish the coating process for the third time; furthermore, adhering the formed coating to base cloth, heating and drying the cloth, and conducting separation and curling; finally, conducting postprocessing, finishing the surface, and heating and drying so as to obtain the leather-imitating automobile leather. The method disclosed by the invention is made from the environment-friendly materials during the production process, clean in production, soft and comfortable in product touch, easy to conduct post process, and capable of meeting requirements on automobile upholstery leather for customers.

The invention discloses a camera module group, a structure thereof, and an assembly method thereof. The camera module group comprises a first motor lens member and a circuit module. The motor lens member is located at a front side of the circuit module, so as to enable the light passing through the motor lens member to reach the circuit module. Moreover, the motor lens member is welded to the circuit module. The assembly method of the camera module group comprises the steps: (A), dynamically adjusting the motor lens member; (B), welding the motor lens member to the circuit module.

The invention provides a production method of a printing composite clothing material. The production method includes the following steps: preshrinking, wherein preshrinking on gray cloth is carried out in a preshrinking device; sizing, wherein a sizing auxiliary is arranged in a sizing rolling vehicle, then the preshrunk gray cloth is padded in the sizing auxiliary, and sizing is carried out at a first preset temperature; heat transferring printing, wherein the sized gray cloth and transfer printing paper are placed into a heat transferring printing machine, the temperature rises to range from 220 DEG C to 240 DEG C, and the vehicle speed is set to range from 18 meters per minute to 24 meters per minute for transferring printing; and gluing, wherein the gray cloth after heat transferring printing is placed into a two-point lining coating machine, paste dot coating machining is carried out, dusting coating machining is then carried out, a raw material of a paste dot coating is polyurethane emulsion, a raw material of a dusting coating is copolyamide, and the glue dot density ranges from 60 dots per square centimeter to 130 dots per square centimeter. The invention further provides the printing composite clothing material produced from the production method.

The present invention discloses a strain of Bacillus methylotrophicus VJ4-1, and a method for producing natural vanillin by ferulic acid biotransformation with the Bacillus methylotrophicus VJ4-1, wherein a name of the strain is Bacillus methylotrophicus VJ4-1, the strain is preserved in the China center for type culture collection (CCTCC) in Wuhan University on January 16, 2012, and a preservation number is CCTCC NO:M2012004. The method of the present invention has advantages of high yield, simple process, mild reaction conditions, less environmental pollution, high product concentration, simple extraction step, clean production, environmentally friendly products, safety, reliability, wide main raw material source, low cost, and natural property, and has an industrial production prospect.

The invention provides a ceramic slurry injection forming system. When a slurry injection device injects slurry into a plaster mold, a movable supporting pipe rises up from the bottom of the plaster mold while being subjected to slurry injection, so that the phenomenon that air is mixed in slurry due to mutual collision of the slurry can be avoided during slurry injection; meanwhile, a rotating part drives the plaster mold to rotate to enable the slurry in the plaster mold to be uniformly distributed; a slurry supplementation device supplements the slurry to the plaster mold, so that the phenomenon of unstable size and thickness of a product due to the fact that the plaster mold is not full of the slurry because of various reasons in the slurry injection device is avoided; a drying device enables the plaster mold to absorb the slurry for forming; a main pipe in a slurry extraction part is connected with a vacuum pump, so that residual slurry in the plaster mold can be extracted; a slurry throwing part drives the plaster mold to move, so that a little of slurry extracted from the bottom of the plaster mold is thrown to the inner wall of the plaster mold so as to be absorbed by the inner wall; and therefore, the ceramic slurry injection forming system provided by the invention is high in automation degree and high in product quality, and is relatively clean in production and high in production efficiency.

The invention provides a method of refining a biological diesel oil by-product of glycerol. The invention relates to the technical field of the oil and fat chemical industry and more particularly a method of refining the biological diesel oil by-product of the glycerol. The steps of the method are that crude glycerol produced during the production process of the biological diesel oil is added into a acidification reactor for the acidification treatment; acidified oil at the upper layer is returned to a biological diesel oil production system as the production materials of the biological diesel oil, and the glycerol at the lower layer is put into a neutralization reactor for the neutralization reaction; the glycerol layer is put into an ion exchange column for impurity removal to obtain the dilute solution of glycerol which contains water; the dilute solution of glycerol is put into a short-stroke pipeline evaporator for continuous evaporation and concentration to obtain the refined glycerol product. The technical process of the invention is simple; the efficiency is high; the investment is less; the quality of the obtained product is uniform; the invention can reduce the recycle cost of the glycerol and the production cost of the biological diesel oil.

The invention discloses equipment for directly producing arsenic by utilizing high-arsenic dust and a production method. The equipment comprises a closed direct current furnace (2), a closed deoxidizing device (3) and a closed arsenic reduction-condensation integrated device (4) connected in sequence by virtue of pipelines, as well as a screw feeding device (1) communicated with the interior of the direct current furnace, wherein the deoxidizing device (3) is characterized in that a carbon powder layer (5) is arranged in a deoxidizing tank; the arsenic reduction-condensation integrated device(4) comprises a tank body, a reduced carbon layer (6) arranged in the tank body, and a condensation cover (7) arranged on the top of the tank body; two ends of a first connecting pipe (8) are respectively communicated with the top of the direct current furnace and the lower part of the deoxidizing device; and a second connecting pipe (9) is communicated with the top of the deoxidizing device and the lower part of the arsenic reduction-condensation integrated device. The equipment disclosed by the invention is capable of producing arsenic in a fully closed environment, and is safe, reliable, high in yield, simple and low in investment.

The invention belongs to drug synthesis, particularly relates to the main ring of Sartan drug for the treatment of the hypertension i.e. 5-(4'-formyl biphenyl-2-base)-1H-tetrazole. The preparation method comprises the following procedures, bromination, esterification, cyclization, hydrolysis and oxidation. Utilizing the triethylamine hydrochloride to serve as the catalyst, the method of the invention inhibits the side reaction, promotes the purity and the yield of the product, avoids the residue of the poisonous matter in the drug intermediate, reduces the waste discharge, realizes the clean production and protects the environment.

The invention relates to an ultra-low-sulfur diesel lubricating property improver and a preparation method thereof. The improver is a mixture of monoglyceride, fatty acid and low-molecular-weight alcohol. The improver has acid value being lower than 30.0mgKOH/g and a condensation point being lower than -1 DEG C. according to the preparation method, biodiesel co-product glycerin and low-molecular-weight alcohols serving as the raw materials have esterification reaction with the fatty acid in the presence of an ionic liquid catalyst to generate the mixture of monoglyceride, fatty acid and low-molecular-weight alcohols, namely the ultra-low-sulfur diesel lubricating property improver, wherein the addition of the improver relative to low-sulfur diesel is 50mu g/g, the temperature is 100-170 DEG C, the pressure is 0.1-0.2MPa and the time is 1-2 hours. The detailed preparation method refers to the specification. The low-sulfur diesel lubricating property improver has low acid value and high lubrication improvement property, can be directly used without use of antioxidants and cleaning agents; production cost is low, the production process is clean and the production flow is short.

The invention provides low-hardness medical thermoplastic brominated butyl rubber and a preparation method thereof, and belongs to the technical field of polymer materials. The low-hardness medical thermoplastic brominated butyl rubber is prepared from a rubber-plastic blend of brominated butyl rubber and polypropylene by a complete pre-dispersion two-step method and dynamic vulcanization technology, can be thermoplastically processed and has the application performance of thermoplastic brominated butyl rubber, the material composition is simple, clean and sulfur-free, or antioxidant or stabilizer is added, the safety and sealing property of an elastomer material in pharmaceutical package application, the low-hardness medical thermoplastic brominated butyl rubber can be directly injection molded into gaskets of rubber plugs, combined covers and infusion bags (bottles), the production process is cleaner, the energy consumption is greatly reduced, and the product cost is greatly reduced.

The invention discloses a method for producing high-strength corrugating medium paper through blending of leather waste and OCC waste paper. The leather waste is treated to obtain clean collagen fibers existing in a single fiber form, the OCC waste paper is pulped to be prepared into OCC pulp suitable for papermaking, 15-20% by weight of collagen fibers and 80-85% by weight of OCC pulp are matched into mixed pulp, the mixed pulp is used for papermaking, and the finished high-strength corrugating medium paper is obtained. Comprehensive utilization of resources is achieved, leather waste of shoe factories and leather factories is recycled to serve as production raw materials of the high-strength corrugating medium paper, a brand-new treating method is provided for the leather waste, and waste is turned into wealth; the production process is environmentally friendly, clean and free of pollution, environmental pollution is avoided, and the papermaking cost of the high-strength corrugating medium paper is reduced. According to the high-strength corrugating medium paper produced through the process, the collagen fibers from the leather waste and plant fibers from the OCC waste paper are interwoven and combined, and the higher-quality high-strength corrugating medium paper is obtained.

The invention discloses an airflow spherification reactor and a method for preparing a polymer-based spherical powder material by the same. The reactor comprises a powder material conveying system, aheating reactor body, a condensing system and a cyclone separator which are connected in sequence, wherein the powder material conveying system is used for uniformly dispersing the powder material andenabling the powder material to enter the reactor with temperature higher than the melting point of the powder material, so that the solid powder material is molten and changes into spheres under theaction of surface tension, the spheres then enter the condensing system to be cooled and shaped, gas-solid separation is realized by the cyclone separator, and the polymer-based powder material withhigh sphericity is prepared finally. The reactor has the advantages of simple structure, low cost, high production efficiency and wide application range. Aftertreatment is not needed with adoption ofair as a dispersion medium, and the method is convenient and quick, can achieve continuous mass production and can be applied to various thermoplastic polymers such as nylon, polyetheretherketone, polystyrene and composite materials of the polymers. The prepared powder material has the advantages of high sphericity, good fluidity, narrow particle size distribution and the like.

The invention relates to a preparation method of fine graphite, belonging to the technical field of graphite material. The method comprises the following steps: performing dry mixing to coke fine powder and asphalt fine powder in a weight ratio of 10:1-7:3, heating the mixed powders for 4-8h in a sealed environment with the temperature of 250-350 DEG C and the vacuum degree of no less than 0.005 MPa while vibrating the mixed material to ensure that the density is not less than 1.8g/cm<3>; then adding 30-50t of pressure to the sealed environment, and gradually heating to 900-1200 DEG C to sinter and obtain fine graphite. The preparation method of the invention has simple process, convenient operation, short production cycle and low production cost; the prepared product has better overall volume density, asphalt coking value and qualification rate of the finished products; in addition, the production process is cleaner, the production environment is better and the influence of the production to the dust, atmosphere and water body can be effectively controlled.

The invention discloses brucite composite heavy metal adsorption granules. The brucite composite heavy metal adsorption granules are characterized by being prepared from raw materials in parts by weight as follows: 10-15 parts of brucite powder, 5-10 parts of plant ash, 2-4 parts of stearic acid, 1-2 parts of carboxymethyl cellulose, 5-10 parts of light calcium carbonate, 0.1-0.2 parts of sodium dodecyl benzene sulfonate, 0.1-0.2 parts of sodium benzoate, 1-2 parts of tartaric acid, 0.5-1 part of boric acid and 5-10 parts of bonding auxiliary materials. The adsorption granules have high adsorption capacity, not only can effectively absorb and remove heavy metal ions in water, but also has certain adsorption and removal effects on nitrogen and phosphorus organic matters in water and has high water purification capacity, the production process is clean and safe, and no secondary pollution is caused during wastewater treatment.