35results about How to "Avoid exposure to oxidation" patented technology

The invention discloses a glaze-crawling-proof protection coating for an immersion type water gap slag line and a preparation method of the glaze-crawling-proof protection coating. The coating is prepared from a main material, water and dextrin; the main material is prepared from the following components in percentage by weight: 62 percent to 66 percent of tabular corundum, 15 percent to 17 percent of Suzhou clay, 3 percent to 5 percent of bentonite, 12 percent to 16 percent of active aluminum oxide and 0.5 percent to 1 percent of sodium silicate; the weight ratio of the water to the dextrin to the main material is (31 to 33):(0.6 to 0.8):100. The glaze-crawling-proof protection coating disclosed by the invention can be used for effectively preventing an anti-oxidization coating of the immersion type water gap slag line part from generating glaze crawling, so that the strength and anti-corrosion performance of the immersion type water gap slag line are improved, and the service life of an immersion type water gap can be prolonged for 2.5 hours to 3.5 hours.

The invention mainly aims to solve the problems caused by degumming in the process of processing abandoned oil serving as raw materials. By dry-method degumming, the series of problems can be solved effectively. The method comprises the following steps of: adding a certain amount of acid (strong phosphoric acid: citric acid is 2:1) into a material system, and reacting at the temperature of 100 and 115 DEG C for 55 to 85 minutes, so that phospholipid in the abandoned oil serving as the raw materials is flocculated to form large granular flocculate; stirring a mixture, which serves as an adsorbent, of quantitative silica gel and carclazyte continuously for 50 and 80 minutes under the vacuum degree of between 0.080 and 0.098 Mpa, wherein the addition of the adsorbent is between 0.5 and 2.0 percent; and cooling the integral material system to a certain extent, filtering the hot material system, and filtering out colloid and part of pigments by adsorption. The process has a simple operational condition, does not generate oil foot, is less in pollution, can improve the yield of products by over 2 percent, achieves the discoloring effect while degumming, and improves the quality of oils obviously.

The invention discloses a dry degumming method of raw abandoned oil used for producing biodiesel. The method comprises steps that: (1) the abandoned oil is dehydrated; (2) a composite acid with a weight of 0.2 to 1.0% of that of the abandoned oil is added to the abandoned oil, wherein the composite acid is composed of strong phosphoric acid and citric acid according to a ratio of 2:1; the mixture is subject to a reaction for 50 to 90min under a reaction temperature of 100 to 120 DEG C, such that phospholipids form macro flocculating constituents; (3) a degumming absorbent with a mass of 0.5 to 2.0% of that of the raw materials is added to the raw materials; a vacuum degree is controlled at 0.080 to 0.098Mpa, a temperature is controlled at 110 to 130 DEG C, and the mixture is stirred for 30 to 60 min with a rate of 50 to 70r/min; (4) the mixture is processed through press filtration, and an obtained filtrate is a production raw material of biodiesel. The method provided by the invention has advantages of simple technology, high yield, and low production cost. Also, the method is energy saving and environment friendly.

The invention provides a novel seedling grafting device and a grafting method thereof. The novel seedling grafting device comprises a rack, a clamping mechanism and a shearing mechanism, wherein the rack comprises a clamping mechanism mounting plate, the clamping mechanism comprises a clamping jaw air cylinder, a clamp head, a guide column and a seedling combining air cylinder, the clamping jaw air cylinder is installed on the clamping mechanism mounting plate, and drives the clamp head to conduct opening motion and closing motion, the seedling combining air cylinder is installed on the clamping mechanism mounting plate, and forward pushes the clamp head and the clamping jaw air cylinder, and the shearing mechanism comprises an abutting lifting air cylinder, a shearing air cylinder, a blade and a seedling placing groove; the shearing mechanism is arranged in front of the clamping mechanism, the abutting lifting air cylinder drives the shearing mechanism to move up and down, the seedling placing groove corresponds to the opening of the clamp head, the blade is arranged beside the seedling placing groove, and the shearing air cylinder drives the blade to move toward the seedling placing groove. According to the novel seedling grafting device, through the adoption of the clamping mechanism and the shearing mechanism, grafting can be completed within a short time, and the survival rate after grafting can be drastically increased.

The invention discloses a multifunctional storage box with a cellular board structure and used for storing copper tubes vertically. The multifunctional storage box structurally comprises a box body, a pair of opposite side walls of the box body are opening-closing side walls hinged to a base, the other pair of side walls are fixed side walls fixedly connected with the base, the portion, close to the upper side, of the inside of the box body is provided with a cellular insertion plate used for allowing the copper tubes to be vertically inserted in, the portion, close to the lower side, of the inside of the box body is provided with an insertion plate with holes shaped like a Chinese character 'jing', the cellular insertion plate is connected with a counting sensor, and the box body is further provided with a dehumidifier. The multifunctional storage box with the cellular board structure and used for storing the copper tubes vertically can prevent oxidation and rust, has a counting function and facilitating storage management.

The invention relates to a method for smelting silicon wafer cutting waste under micro-negative pressure, belonging to the technical field of silicon regeneration and recovery by pyrometallurgy of silicon wafer cutting waste. The invention aims to solve the problems that silicon powder is easy to oxidize in the smelting process and impurity removal efficiency is low in the smelting process due tothe existence of moisture in the pyrometallurgy silicon recovery process of silicon wafer cutting waste. According to the invention, a micro-negative pressure device is moved to a position over a smelting furnace opening, and a vacuum device of the micro-negative pressure device is started to enable silicon wafer cutting waste to undergo micro-negative pressure smelting, so oxidation loss of superfine silicon powder in the smelting process is avoided, volatile impurities in silicon are removed, and synchronous refining of silicon melt is achieved. According to the invention, a micro-negative pressure environment is created above the silicon melt, so smoke can be prevented from escaping in the silicon smelting process, and the environmental influence is reduced. The method is simple in equipment requirement, easy to operate, friendly to environment and suitable for large-scale industrial production.

The invention relates to a preparation method for wrapping the surfaces of ceramic particles with metal, and belongs to the field of metal-ceramic composite. The method comprises alkali treatment, acid treatment, wrapping treatment and mixing, wherein in the wrapping treatment, the mass ratio of ceramic powder to metal powder, NH4Cl and metal hydride is (80-95):(12-25):(8-20):(15-25); and during mixing, the mass ratio of the ceramic powder to the metal powder is (40-70):(30-60). According to the preparation method, firstly alkali washing and acid washing are carried out on the ceramic particles, that is, activation treatment is carried out, then the ceramic particles after the alkali washing and acid washing are uniformly mixed with the metal powder, NH4Cl and the metal hydride for vacuumreaction treatment, and the surfaces of the ceramic particles are wrapped with the layer of metal; and therefore, oxidation is avoided, wetting and compatibility with the metal are improved, and the coating retains the characteristics of high hardness, friction and wear resistance and chemical corrosion resistance of the ceramic. The preparation method has the advantages of simple process, low equipment requirement and convenient batch production.

The invention belongs to the technical field of storage and preservation, and particularly relates to a method for slowing down oil storage consumption of camellia oleifera fruit. An inhibitor and a light absorption film are combined to jointly slow down the oil consumption of the camellia oleifera fruit, and the inhibitor inhibits the cell respiration of the camellia oleifera fruit and slows downthe oxidation rate of saccharides; film coating treatment is performed on the surface of camellia oleifera fruit shell, so that the camellia oleifera fruit can be isolated from most air while ultraviolet rays are absorbed, the oxidation speed is reduced, the moisture in the camellia oleifera fruit shell is retained, and the quality of camellia oleifera seeds is ensured.

The invention relates to a carrot powder processing method and belongs to the technical field of health food. The method includes the steps of 1), selection of raw materials, namely selecting leftovers of disease and pest free carrot processing products and removing decayed parts; 2), sterilization and condensation; 3), pulping, namely crushing the raw materials subjected to condensation to produce a pulping object; 4), drying, namely putting the pulping object into the partition of a drying box for freezing at the freezing temperature of minus 20DEG C for 1 hour, and subjected the frozen raw materials to sublimation drying; 5), crushing, namely placing dried particle materials into a pulverizer to be pulverized into powder and controlling the particle size to be under 20 meshes; 6), packaging, namely packaging and sealing with composite plastic thin films according to grades. In the method, steam sterilization and the condensate liquid sealing technology are combined, an original production technology is simplified, and the method has the advantages of simpleness in technology and hygiene and security.

The invention discloses a process for inlaying gold and silver into ceramic. The process comprises the following steps of: sketching a script on a ceramic blank, coating the gold and the silver according to the requirement of the script, drying, coating an anti-oxidation glaze protective layer, and sintering. The gold and the silver are simultaneously inlaid in the ceramic blank to form a picture, so that the gold and silver inlaid part of the ceramic has multi-thickness effect, and the ornament is enhanced; the gold and the silver are staggered and fused together with the anti-oxidation glaze protective layer by high-temperature sintering, so that the formed picture has depth change and excellent light transmission property; gold powder and silver powder are not mixed together in making through an isolating agent; and the gold and the silver are prevented from being oxidized by air due to contact through the anti-oxidation glaze protective layer, and the gold and the silver are not easily directly contacted so as to avoid abrasion.

The invention discloses a process and a device for continuously producing bentazone intermediate o-aminobenzoic acid isopropyl amine by taking phthalimide as a raw material. The process comprises thefollowing steps: (1) adding phthalimide solid and pure water into a reaction kettle, stirring at a low speed, adding a 32% sodium hydroxide solution, and stirring at normal temperature for 30 minutes;(2) respectively feeding the phthalimide sodium salt solution and the sodium hypochlorite solution into a micro-channel reactor according to a certain flow rate, carrying out a Huffman rearrangementreaction at a low temperature, and feeding the mixture into a temporary storage tank; (4) mixing the reaction solution in the temporary storage tank 1 with hydrochloric acid (or sulfuric acid and thelike) through a static mixer, feeding the mixture into a reaction kettle, heating the mixture to room temperature, adding an isopropylamine aqueous solution at a certain flow rate, and continuously stirring for 2-3 hours; (4) enabling the solution to pass through a plate-and-frame filter press, returning the filtrate to the first step for repeated application, and drying the filter cake to obtainisatoic anhydride with the purity of 99% or above.

The invention provides an analysis method of a material failure crack source, and belongs to the field of material detection. The analysis method of the material failure crack source comprises the steps of acquiring a failure sample and at least one intermediate sample from parts in the same batch or the same part, wherein the failure sample is taken from the fractured part of the part, and the intermediate sample is taken from the unfractured part of the part; selecting an intermediate sample with an intermediate crack as a crack sample, wherein the the position of the intermediate crack corresponds to the fracture position of the failure sample; and determining the position of the failure crack source of the part according to the position of the intermediate crack in the crack sample. According to the analysis method, the interference of the use environment and the machining process of the part on crack source searching can be effectively reduced.

The invention discloses a process and a device for continuously producing anthranilic acid by taking phthalimide as a raw material. A process for continuously producing anthranilic acid by taking phthalimide as a raw material comprises the following steps of: (1) adding a phthalimide solid and pure water into a reaction kettle, stirring at a low speed, adding a 32% sodium hydroxide solution, and stirring at normal temperature for 30 minutes; (2) enabling a phthalimide sodium salt solution, a 32% hydrogen peroxide solution and a hydrochloric acid solution to respectively enter a micro-channel reactor according to a certain flow rate, be subjected to a Hofmann rearrangement degradation reaction at low temperature, and enter a temporary storage tank; and (3) pressurizing the slurry in the temporary storage tank through a slurry pump to enter a plate-and-frame filter press, treating the filtrate through a filtrate removal tower, then repeatedly applying the filtrate, and drying a filter cake to obtain isatoic anhydride with the purity of 99% or above.

The invention discloses a feeding control system and a control method for chinlon chip raw materials in the technical field of chinlon chip stock bins. The system comprises a feeding box, the feeding box is a feeding device for the chinlon chip raw materials, a bin cover for feeding is arranged at the top of the feeding box, a feeding identification code is arranged on the feeding box, a discharging port for the raw materials to enter a storage process at the bottom of the feeding box, and the bottom of the discharging port is connected with the stock bin with the fixed capacity. According to the feeding control system and the control method for the chinlon chip raw materials, manual recording is not needed, the feeding amount and material data of each time can be accurately recorded, whether chinlon slice raw materials in a raw material bag can be continuously fed into the stock bin or not can be judged, and according to the condition of the raw materials in the stock bin, a controller controls whether an automatic valve is opened or not, whether feeding can be carried out or not and whether the raw material type is matched with that in the stock bin or not can be prompted through a mobile terminal, use is very convenient and more intelligent, and the situation that the feeding type is wrong and the total feeding amount is wrong can be avoided through the system.

The invention belongs to the technical field of tool manufacturing, and relates to a porcelain sleeve assembling tool. The assembling tool comprises a positioning body and a pushing device. The positioning body is provided with a T-shaped guide rail. The pushing device is composed of a push rod, a guide rod and a base plate. The assembling tool is applied to the product assembling process of a structure composed of a similar thermocouple, porcelain sleeve assembling which is completed manually is changed into machine production by means of the tool, the assembling time is short, only about 10 s is needed for assembling every porcelain sleeve, no intermittence or pause exists in assembling of multiple porcelain sleeves, continuous operation is achieved, and the production efficiency is multiple or even tens of times that of manual penetration. The porcelain sleeves are concentrically installed in a sleeve pipe hole, the centering precision reaches 0.05-0.1 mm, the phenomenon that porcelain sleeves are inclined when penetrated manually is changed, the porcelain sleeves are successfully compacted, building block type butt joint of the porcelain sleeves is achieved, and the phenomena of reworking, raw material scrapping and manual labor hour waste are avoided.