107 results about "Pre treatment" patented technology

This invention relates to one kind of method to use abandoned grease to produce epoxy plasticizer, its characteristic lies in: Use the abandoned grease as raw materials, by pretreatment, the obtained glycerin ester to ester exchange respond with the methyl alcohol under alkali catalysis, then get fatty acidmethyl ester, then again with the peroxide organic acid, which is the reaction products of hydrogen peroxide and organic acid, to directly epoxy respond, get the raw epoxy fatty acid methyl ester, then wash off the acid by water, and obtain the epoxy fatty acid methyl ester by distillation and dehydration product. The raw material cost of this invention is low, originates broadly, conforms to the green environmental protection requirement, and the craft is simple, does not pollute environment, so it is the good substitute of petroleum product.

The process for the treatment of ligno-cellulosic biomass comprises the steps of:

• • A) Soaking a ligno-cellulosic biomass feedstock in vapor or liquid water or mixture thereof in the temperature range of 100 to 210° C. for 1 minute to 24 hours to create a soaked biomass containing a dry content and a first liquid;
  • B) Separating at least a portion of the first liquid from the soaked biomass to create a first liquid stream and a first solid stream; wherein the first solid stream comprises the soaked biomass; and
  • C) Steam exploding the first solid stream to create a steam exploded stream comprising solids and a second liquid.

The invention discloses a method for processing high water content oyster instant food, which comprises the following: (1). a step of raw material pretreatment: fresh oyster meat is selected as a raw material, and cleaned and dried; (2). a step of blanching and dewatering: oyster meat treated according to the step 1 is dipped in boiled salt water for blanching and dewatering; (3). a step of seasoning: the oyster meat treated by the step 2 is picked up and put in season liquid for tasty seasoning and dipping seasoning while stirring; (4). a step of roasting: oyster meat treated by the step 3 is roasted and then cooled; and (5). the oyster meat treated by the step 4 is vacuum packaged and then sterilized in hot water. The product produced by the method has the advantages of having high water content, keeping original color luster and appearance of fresh oyster, lowering production cost and improving the added value of oysters.

The invention relates to an esterification deacidification process for high acid number rice bran oil, and the process can well solve the problem of a low refining rate. The esterification deacidification process for high acid number rice bran oil comprises grease pretreatment, namely two steps of degumming and decolorizing. A decolorized substance is obtained after the decolorizing, and then esterification deacidification is carried out. The concrete operating method comprises the following steps of: adding glycerin after the decolorized substance is stirred and heated at a vacuum degree of 0.09 MPa; adding a catalyst of zinc oxide or zinc to carry out a catalytic reaction to generate low acid number rice bran oil with an acid number of 5-7mgKOH/g. The zinc oxide or zinc which is taken as the catalyst of the esterification deacidification of the high acid number bran oil can effectively boost the esterification reaction and rapidly reduce the acid number; simultaneously the process overcomes the problems of the low refining rate lying in a traditional refining method and a great deal of sewage produced by a chemical alkali refining method; the zinc oxide or zinc has a low price, thereby reducing production cost; compared with other chemical esterification catalysts, the zinc oxide or zinc has a very low toxity, thereby being very suitable for the production of edible grease.

The invention discloses a preparation method of a porous diamond film. The preparation method of the porous diamond film comprises the following steps: putting a silicon substrate into a microwave-plasma chemical vapour deposition device, wherein a Pt metal film is plated on the surface of the silicon substrate as a catalyst; controlling the vacuum degree to be 10-30 millibars, introducing a working gas, loading a carbon source to a microwave-plasma generating region, and heating to 750-850 DEG C; depositing to obtain a blocky diamond film; calcining the film in the air atmosphere at the temperature of 500-600 DEG C, thus obtaining the porous diamond film. The preparation method of the porous diamond film has the advantages that no template is needed, no complex pre-treatment process or high temperature process is needed, metal pollution can be avoided, and a treatment process is further simplified.

The invention discloses a real-time gesture recognition method which comprises the steps of (1) decomposing an obtained gesture video into image sequences sorted in a chronological order and preprocessing obtained images and then carrying out hand-region segmentation, (2) extracting a hand shape feature of a hand region in each image and using an SVM support vector machine to identify the hand shape feature as a corresponding gesture value, (3) combining the gesture value of each image and a direction feature of a motion trajectory obtained by an iterating LK pyramid optical flow algorithm asa feature vector of each dynamic gesture image, (4) carrying out loop execution of steps (2) and (3) with a loop end condition that all images of a current video are processed so as to obtain a complete set of feature vector sequences, (5) creating a gesture template library, (6) carrying out optimization DTW match on the obtained feature vector sequences and all templates in a template library, calculating the degree of distortion of the match, wherein recognition is failed if the degree of distortion is larger than a distortion threshold, and a recognition result is outputted if the degree of distortion is smaller than the distortion threshold.

The invention discloses a method for removing phenol in phenol contained wastewater by using a hollow fiber membrane. The method comprises the following steps of: mixing a carrier and a diluent to prepare an extractant, wherein the adopted extractant carrier is tributyl phosphate, and the adopted diluent is coal oil or benzene; stirring and fully mixing the extractant and a stripping agent to prepare treating fluid; removing the phenol out of the phenol contained wastewater by using a hollow fiber membrane device; and after pretreating the hollow fiber membrane device, injecting the treating fluid into a tube pass of a membrane component, and injecting the phenol contained wastewater into a shell pass of the hollow fiber membrane component, wherein the wastewater can be treated through the same membrane component or a plurality of serial membrane components in a circular manner for many times; after the wastewater is subjected to two-stage treatment, the phenol concentration is less than 100mg/L; and after the wastewater is subjected to five-stage treatment, the phenol concentration is less than 5mg/L, the removal rate reaches up to 99.8 percent, and the wastewater reaches the national emission standard.

The invention discloses bright etched frosted glass and a preparation method thereof. The bright etched frosted glass has the reflectivity of 30% to 80% and has an etched layer with the thickness of 50nm to 200nm. The preparation method comprises the following preparation steps: (1) glass washing and drying; (2) pretreatment; (3) etching treatment; (4) aftertreatment. According to the bright etched frosted glass prepared by the preparation method, the surface of the glass has a relatively large amount of crystals which are arranged neatly, the frosted surface is fine and smooth, the finished product rate of preparation is high, the quality is stable, labor and time are saved, the process is simple and easy in operation, the frosting is uniform, smooth and delicate, and the bright etched frosted glass has a granular sensation, is tack-free to fingerprints and emit diamond-like gloss under sunshine irradiation, thereby having relatively high commercial value. In addition, the recovery of a majority of silicon tetrafluoride is achieved, the emission of silicon tetrafluoride gas is reduced, and the influence on environments and human bodies is lowered.

The invention provides a method for removing phenol-based substances from water by using an iron-sulfur supported multi-walled carbon nano-tube reinforced persulfate, and relates to a water treatment method. A purpose of the present invention is to solve the technical defects of high cost, poor removal effect and the like of the existing method for removing phenol-based substances from water. The method comprises: 1, mixing a persulfate and pre-treated water; 2, preparing iron-sulfur supported dual-phase composite multi-walled carbon nano-tubes; 3, pouring the iron-sulfur supported dual-phase composite multi-walled carbon nano-tubes; and 4, filtering the treated water so as to complete the method. With the method of the present invention, the removal rate of the phenol-based substances in the water can achieve 87-98%, and the residual phenol-based substance in the water can be removed.

The invention relates to a 2000 MPa-grade bridge cable galvanized steel wire and a preparation method thereof. The steel wire comprises the following chemical components of, in percentage by weight, 0.88%-0.94% of C, 1.05%-1.35% of Si, 0.40%-0.50% of Mn, 0.25%-0.35% of Cr, less than or equal to 0.07% of Cu, and the balance Fe and inevitable impurity elements; and the steel wire further comprises one or more than one of the following components of, in percentage by weight, 0.0005%-0.0015% of B, 0.01%-0.03% of Nb and 0.01%-0.03% of Mo; and the preparation method of the steel wire comprises the following steps of steel wire rod pre-treatment, drawing and hot galvanizing stabilization. The twisting performance of the galvanized steel wire is improved by strictly controlling of the chemical components of the steel wire rod, the surface quality and inclusion as well as optimizing the drawing and a hot galvanizing process; and the tensile strength of the galvanized steel wire produced by themethod can reach the 2000 MPa or above , and the torsion value is not less than 18 circles.

The invention discloses heat-insulating plastering gypsum for a building interior wall and a preparation method thereof and relates to the technical field of plastering gypsum. The heat-insulating plastering gypsum comprises 55-75 parts of desulfurized gypsum, 20-30 parts of natural gypsum, 15-20 parts of cement, 15-20 parts of heat-insulating filler, 10-15 parts of modified heavy calcium carbonate, 10-15 parts of plant source additive, 5-10 parts of rubber powder, 5-10 parts of modified expandable graphite and 7-12 parts of auxiliary. The preparation method includes: pretreating the natural gypsum. The heat-insulating plastering gypsum is used for being brushed on the building interior wall, is excellent in heat-insulating performance and has high adhesiveness, and a coating is free of shrinking and cracking and less prone to shedding.

The invention relates to a process of preparing industrial high- purity water. The invention is characterized in that it comprises process of first- level hyper-filteration of pre- treated wastewater, second- level hyper-filtration, and preparation of high- purity water in continuous electric deion desalt apparatus. The advantages of this invention are: small device occupation area, low energy consumption, reduced investment, no contact of water produced in second- level hyper-filteration with air and high- quality purified water.

The invention discloses a method for realizing cerebrovascular image identification by using fast boundary tracking. The method comprises the following steps: obtaining an original cerebrovascular image needed to be identified and performing pretreatment on the original cerebrovascular image; performing gradient treatment on the original cerebrovascular image; using a pixel point with the biggest gradient value in the image after the gradient treatment as a starting pixel point to perform tracing judgment on boundary points; and repainting all the obtained boundary points into an image which is the needed processed cerebrovascular image. The method is characterized in that three adjacent points of the prior point which is far from the last point are selected as candidate nodes, and the next adjacent point is determined by distributing different weights according to the importance differences of position information of the nodes so as to obtain a boundary tracing image of the cerebrovascular image. The boundary image extracted by the method has distinct outline, low noise, high precision, and smooth boundary, improves the quality of boundary extraction, and reduces the computation time greatly; besides, the method is applied to a system for computer-aided diagnosis of cerebrovascular diseases, and improves the accuracy of a computer in judging cerebrovascular pathological change parts and types.

The process of eliminating pollutant from underground water with combined nanofiltering membrane includes the following steps: 1. pre-treatment and treating with nanofiltering membrane; 2. analyzing the quality of polluted underground water through measuring Fe and Mn content, potassium permanganate index and relative organic matter molecular weight; 3. determining whether to progress to the following steps through water quality analysis; 4. performing the combined process A or B to treat water to reach drinking water standard in condition of potassium permanganate index not lower than 2.0 mg/l, Fe less than 0.2mg/l and Mn less than 0.05 mg/l; and 5. performing the combined process C or D to treat water to reach drinking water standard in condition of potassium permanganate index not lower than 2.0 mg/l, and Fe less than 0.2mg/l and/or Mn less than 0.05 mg/l. The present invention may be applied widely in water supply of city.

The invention discloses a hardware surface coating process. The hardware surface coating process comprises the following steps that pressure casting is conducted on a hardware part, and then a spraying process is conducted. The spraying process comprises the steps of surface pre-treatment, priming paint spraying, baking in an oven, polishing treatment, and cleaning and drying. Finish paint is sprayed after priming paint spraying and drying are conducted three times, after the finish paint is dried, the whole hardware part is inspected, and a qualified product is packaged and warehoused. According to the hardware surface coating process, nano-molecules are added into the paint sprayed on the hardware part, so that interface bonding of priming paint and a coating is easily improved; the pressure casting process is adopted, so that the production efficiency of the product is improved, the procedures are simple, the surface roughness is good, a large number of machining procedures and devices are omitted, and raw materials are saved; and compared with traditional direct CNC machining based on aluminum materials, the machining cycle is shortened, labor is saved, and the cost is reduced.

The invention belongs to the technical field of surface film reinforcement, and in particular relates to a preparation method of a Ta (Tantalum) film on a bearing steel surface. The preparation method comprises the following steps: firstly the bearing steel surface is pre-treated, ground, polished, then subjected to ultrasonic cleaning in an organic solvent, and dried; then a work piece is subjected to the surface sputtering cleaning in a vacuum state, and the nonmetallic ion implantation is carried out on the surface of the work piece; a Ta surface is subjected to sputtering cleaning, and a Ta-based film is deposited on the surface of the work piece obtained from the above procedures; and at last the nonmetallic ion implantation is carried out on the Ta-based film. By adopting the preparation method, the obtained bearing steel is high in hardness and good in wear resistance, the rigidity of the bearing steel is at least improved by 80%, the wear rate is reduced by 65%, and the service life of the bearing steel is efficiently prolonged. In addition, no obvious interface exits between the prepared film and a base, the metallurgical bonding can be achieved, the bonding force can be improved, and simultaneously the rigidity of the work piece is improved.

The invention relates to a combined process for standard-meeting discharge of garbage percolate treatment, which takes a garbage percolate stock solution or a garbage percolate pretreated by an anaerobic regulating reservoir as a treatment object, and comprises the following steps: step one, the garbage percolate to be treated is treated by a multiple microporous carrier reaction bed film-formed with microorganisms to decompose organic substances in the garbage percolate; step two, the oxidation flocculation treatment is performed; and step three, the multistage filtration treatment is performed, the treatment fluid with CODcr less than 100mg/L is drained, and the multistage filtration comprises micro-filtration, fine filtration and reverse osmosis orderly. The process has low treatment cost, simple process, convenient equipment maintenance, strong anti-load capability, strong internal digestion power of metabolites, and small amount of sludge discharge, is suitable for garbage percolates with different concentrations and different discharge requirements, flexibly adjusts a program of process combination according to percolates, combines multiple high-efficiency single technologies, adopts different combination schemes, and ensures that the advantages of the single technology are better played.

The invention provides a cellulosic fiber fabric ink jet transfer printing method. The cellulosic fiber fabric ink jet transfer printing method takes hydrophobic PET (polyethylene terephthalate) filmsor BOPP (biaxially-oriented polypropylene) films as base materials and comprises, firstly, in an ink jet mode, printing active dye ink onto the surface of the hydrophobic films which are processed with coatings, secondly, laminating and rolling the printed films with cellulosic fiber fabric to complete transfer of patterns, and lastly, performing steaming fixation and washing to complete a printing process. The cellulosic fiber fabric ink jet transfer printing method is high in dye transfer rate, good in color fastness of printed fabric and capable of ensuring reusability of the printed films.

The invention provides a system for continuously recycling a waste ternary lithium-ion battery and belongs to the technical field of recycling of lithium-ion batteries. The system comprises a pre-treatment unit, an acid leaching unit, a primary impurity removal unit, a co-precipitation unit, a secondary impurity removal unit and an ammonia recycling unit, wherein the pre-treatment unit comprises apulverizer, a pulse dust collection device, a positive and negative electrode powder cabin and a separation machine; the acid leaching unit comprises a leaching reaction kettle and a micro-filteringmachine I; the primary impurity removal unit comprises an impurity removal reaction kettle and a squeezing machine; the co-precipitation unit comprises a material preparation kettle, a co-precipitation reaction tank and a centrifugal machine; the secondary impurity removal unit comprises a secondary impurity removal reaction kettle and a micro-filtering machine II; the ammonia recycling unit comprises a heater, an evaporation crystallization device, a condenser and an ammonia liquid receiving tank. The invention further provides a technology for continuously recycling the waste ternary lithium-ion battery by utilizing the system. According to the system provided by the invention, a prepared nickel-cobalt-manganese ternary material precursor has high purity and large tap density; grains have a small grain diameter and narrow distribution and are uniformly mixed; a lithium sulfate solution can be directly used for producing lithium carbonate.

The invention discloses a pair of rolling-cut type bilateral scissors and a manufacturing method thereof. The pair of rolling-cut type bilateral scissors comprises ingredients in percentage by weight as follows: 0.40%-0.65% of C, 0.15%-0.35% of Si, 0.60%-0.80% of Mn, 3.50%-6.00% of Ni, 2.5%-4.00% of Cr, 1.50%-2.50% of Mo, 2.00%-3.50% of V, smaller than or equal to 0.02% of S, smaller than or equal to 0.025% of P, larger than or equal to 4% of Cr and Mo and the balance of Fe and unavoidable impurities. The manufacturing method of the rolling-cut type bilateral scissors comprises steps as follows: smelting, ingot casting, forging, annealing, rough machining, pretreatment process (normalizing and high-temperature tempering), semifinishing, final heat treatment (quenching and tempering) and finish machining. The rolling-cut type bilateral scissors can meet the production demand of high-strength medium plates of HG980, HG108, X80 and the like, and the shearing quality and shearing tonnage of the bilateral scissors are improved.

The invention belongs to the technical field of coating grinding tools, and relates to a foam coating grinding tool and a preparing method thereof. The grinding tool comprises a base body layer (1), a primer layer (2) and a grinding material (4), and the base body layer (1) is coated with the primer layer (2) and the grinding material (4). The grinding tool is characterized in that the primer layer (2) is coated with a foam layer (3), and the grinding material (4) is evenly embedded in the foam layer (3); the foam layer (3) is made of foaming foam resin. The preparing method comprises the steps that a preprocessed base body is coated with primer; after the foam resin and the grinding material are evenly mixed, a foam layer sizing agent including the grinding material is manufactured, the base body coated with the primer is coated with the foam layer sizing agent including the grinding material with the coating amount of 200 g/m<2>-500 g/m<2>, and a grinding tool to be formed is obtained; after drying and ironing foaming are carried out on the grinding tool to be formed, the grinding tool is formed through cropping. During grinding, the grinding tool can be attached to the surface of a workpiece, the surface quality of the workpiece can be rapidly improved, and the grinding effect is uniform.

The invention discloses a leather industry chromium-containing wastewater recycling treatment process system. The process system comprises a pretreatment system, a membrane separation system and a chromium recovery system which are sequentially communicated; the pretreatment system is used for the pretreatment of leather chromium-containing wastewater before membrane separation; the membrane separation system performs freshwater separation and chromium solution concentration treatment on the pretreated chromium-containing wastewater; and the chromium recovery system recycles chromium from a concentrated chromium solution obtained in the membrane separation system in order to obtain chromium powder with the chromium content being greater than 5%. The chromium-containing wastewater discharged from a leather tanning workshop is filtered and finely filtered by the pretreatment system, and then enters the membrane separation system composed of a nanofiltration device and an electrodialysisdevice to produce freshwater for direct reuse, obtained concentrated water undergoes electrodialysis desalination to prepare strong brine, and the remaining concentrated chromium solution enters the chromium recovery system and undergoes spray drying to obtain the chromium powder. The process system greatly saves precious water resources, and also realizes the recycling of chromium resources in order to achieve the recycling of the leather industry chromium-containing wastewater.