111results about How to "Meet industrial requirements" patented technology

The invention relates to a selective hydrodesulfurization catalyst and a preparation method thereof. The catalyst takes alumina and a silicon-aluminum mesoporous molecular sieve containing an ordered mesoporous structure as carriers, takes cobalt and molybdenum as the active components and takes magnesium as an addition agent. The preparation method of the catalyst comprises: mixing the alumina and the silicon-aluminum mesoporous molecular sieve; adding sesbania powder and nitric acid, then carrying out mixing kneading, shaping, drying and baking on the mixture to prepare the compound of the alumina and the silicon-aluminum mesoporous molecular sieve; then the compound is treated by organic acid and loaded with the addition agent of magnesium as well as the active components of cobalt and molybdenum, then, aging, drying and baking are carried out on the mixture to prepare the catalyst. The catalyst shows excellent gasoline selectivity and hydrodesulfurization activity, low loss of product researching octane number and high liquid yield by inducing the porous structure and acidity of the modulating catalyst of the ordered mesoporous molecular sieve, inducing the acidity of a magnesium modulating catalyst and inducing the manual effect between an organic acid modulating carrier and the active components.

Production of epsilon-glycolylnium is carried out by Beckman rearrangement reacting for cyclohexanone-oxime under the existence of solvent to obtain epsilon-glycolylnium contained mixture, crystalline separating for the mixture to obtain crude epsilon-glycolylnium crystal, dissolving by arene, extracting by water, adsorbing by resin hydrogenation catalyzing to obtain the final product. The value of potassium permanganate is less than 5, extinction value is less 0.05, volatile alkali is less than 0.5meq/kg and alkalinity is less than 0.05meq/kg.

The present invention provides one kind of antifouling paint containing capsaicin microcapsule and its preparation process. The antifouling paint consists of adhesive of epichlorohydrin rein or vinyl resin 40-55 weight portions, organic solvent of toluene, xylene, etc. 11-33 weight portions, dispersant of sodium triphosphate, sodium or polyglycol 1.5-5.5 weight portions, anti-settling agent of organic bentonite, gas phase silica or polyethylene wax 0.5-3.5 weight portions, and antifoulant of capsaicin microcapsule 20-30 weight portions. The capsaicin microcapsule with covering of melamine resin is prepared through a in-situ polymerization process. The antifouling paint has simple preparation process and low production cost, and may be applied widely for sea ship, sea water cooling pipeline, etc.

The invention discloses a multi-bar code positioning method, which comprises the following steps: (1) preprocessing the detected image to obtain a binary image; (2) edge detection is performed on theexternal rectangles in the binary image to obtain positions of a plurality of rectangles; (3) judging by the bar code, selecting the rectangle which meets the conditions; (4) determining the angle ofthe smallest circumscribed rectangle and correcting the angle to realize the upright of the bar code; (5) sorting the upright rectangles of the bar codes, obtaining a plurality of sorted rectangular regions containing the bar codes under the condition that the bar code system is consistent, and completing the positioning of the bar codes. The invention can obtain the positioning of a plurality ofbar codes in one measurement, can greatly speed up the whole logistics speed, and thus achieves the purpose of improving the efficiency.

The invention is a method for preparing a silicon nanotube, which takes the mixed powder of SiO, Si, etc. as the starting material and a small amount of rare earth elements as an indirect catalyst, evaporates the material under the conditions of high temperature and low air pressure, and causes the silicon atoms to accumulate and nucleate at a proper deposition temperature, thereby preparing the hollow-structured silicon nanotube. The method for preparing the silicon nanotube has the advantages of simple process, low-cost equipment, complete crystal structure of the nanotube, and capability for meeting the industrial requirements. The successful preparation of the nanotube provides a practicality foundation for the nanuotube to be widely applied in nanoelectronic devices in the future, and the theoretical research of the nanotube is verified from the experiment.

The invention provides a preparation method capable of increasing the macropore volume of a silicon dioxide carrier. The preparation method comprises steps as follows: components comprising, in parts by mass, 100 parts of silicon dioxide powder with the specific surface area of 60 m<2>/g-250 m<2>/g and 10-30 parts of macromolecule ultrafine powder which basically doesn't have any residues after firing and basically doesn't absorb water to be swollen are sufficiently and uniformly mixed; 80-100 parts of a polymer aqueous solution with certain viscosity and with the mass concentration being 0.1%-0.5% is added, the mixture is sufficiently and uniformly mixed, 40-70 parts of silica sol with the concentration being 20%-30% is added, and the mixture is sufficiently and uniformly mixed and placed in an airtight manner; the average diameter of particles of the silica sol ranges from 10 nm to 30 nm, and the polymer basically doesn't have any residues after calcination and is selected from one of polyacrylamide, cellulose and modified starch; the mixture is kneaded and extruded to form strips, the extruded strips are dried and calcined at the temperature of 600 DEG C-670 DEG C for 2-4 hours, and the silicon dioxide carrier is obtained. According to the silicon dioxide carrier, the volume of macropores with the diameters larger than 100nm is higher than 0.10-0.35ml/g, the silicon dioxide carrier has higher mechanical strength, and the side pressure strength is higher than 150 N/cm.

The invention discloses a treatment method of fluoride-containing wastewater, the fluoride-containing wastewater is treated by a wastewater treatment distillation system, the wastewater treatment distillation system includes a distillation kettle, a filling rectifying tower, a condenser and a liquid reservoir, and the method is as follows: the fluoride-containing wastewater is led in from a wastewater inlet of the distillation kettle, at the same time a water absorption solvent is led in from a solvent inlet, hydrogen fluoride is collected from a gas outlet, and when the tower top temperature of the filling rectifying tower is higher than the hydrogen fluoride collecting temperature, the collecting is stopped; the distillation kettle temperature is gradually increased to 80-150 DEG C, under the pressure of 0.110-0.120MPa, trifluoroacetic acid is collected from the gas outlet, and when the tower top temperature of the filling rectifying tower is higher than the trifluoroacetic acid collecting temperature, the collecting is stopped; the treatment method is good in separation effect, the product purity is high, the hydrogen fluoride recovery rate is up to 98.6%, the product purity can reach 99.9%, the trifluoroacetic acid recovery rate can reach 99.0%, the product purity is up to 99.8%, no three wastes is produced, and concentrated acids produced in the treatment process are reusable.

The invention discloses an egg-chicken feed additive for producing xanthophyll-enriched eggs by using orange peel. The egg-chicken feed additive is prepared from the following raw materials in parts by weight: 70-72 parts of fermented orange peel powder, 6-8 parts of rice hull powder, 12-14 parts of coccolithophore powder and 8-10 parts of assistant; wherein the assistant comprises solid calcium bisulfate, microcrystalline cellulose and silicon dioxide at the ratio of 1.5:6.7:1.8. A preparation method comprises the following steps: firstly, airing or drying orange peel, rice hull and coccolithophore, respectively crushing into coarse powder with a particle size of 60-80 meshes; in order to make xanthophyll in the orange peel relatively easily absorbed and utilized, fermenting the orange peel powder by using lactobacillus acidophilus, finally uniformly mixing the fermented orange peel powder, the rice hull powder and the coccolithophore powder according to a proportion and then uniformly mixing with the assistant, processing by using a high-energy vibration mill, and making all raw materials generate a solid mechanical and chemical reaction to obtain a finished product. By applying the egg-chicken feed, an egg-chicken is fed by applying the egg-chicken feed, the content of the xanthophyll in yolk can be remarkably improved, and is higher than that of a control group by above 30 percent. According to the egg-chicken feed additive, nutritional conditions of intensively culturing the egg-chicken are improved, the orange peel is comprehensively utilized, waste is changed into valuable, cyclic economy is realized, and the economic benefit is remarkable.

The invention relates to a method for preparing ultra-thin porous nickel selenide nanosheet array by etching manganese-doped nickel hydroxide, which relates to the technical field of electrode materials for supercapacitors. As that electrode material structure of the exist transition metal selenide nano-sheet is unreasonable, if the electrode material is an ultra-thin nano-sheet structure, the electrode material cannot be porous, and the ion mobility and the contactable active site are affect; the electrode material structure of the transition metal selenidenano-sheet is unreasonable. If the nanosheets are porous, the thickness is too thick, the contact active sites are too few, and the energy storage is too low, so the capacitance performance is too low. Methods: 1. Preparation of reaction solution; 2, preparing a manganese doped nickel hydroxide nano sheet array; 3, selenide treatment; Fourthly, acid etching, that is, a method of preparing ultrathin porous nickel selenide nanolithicarray by etching manganese-doped nickel hydroxide is completed. The invention provides the method used for preparing ultra-thin porous nickel selenide nanosheet array by etching manganese doped nickelhydroxide.

The invention provides F/Mn co-doped SnO2 nanopowder and the preparation method thereof, and belongs to the technical field of co-doped SnO2 nanopowder. The preparation method includes the following steps that first water is added to a reactor and citric acid is added to adjust pH while the temperature is raised to 40-60 DEG C with stirring, then SnCl4 5H2O is added until dissolved, additionally, MnSO4 H2O and NH4F are added to the above solution, after stirring is continued for 10 minutes, a precipitating agent is gradually added to the above solution and stirring is continued for another 30 minutes, subsequently, the pH is adjusted to 5-11, and a dispersing agent is further added. The resulting mixture is subjected to a hydrothermal reaction at a temperature of 140-200 DEG C. After reacting for 2-36 hours, the product is washed with distilled water and anhydrous ethanol until no Cl- is detected. Finally, the F/Mn co-doped SnO2 nanopowder is obtained by subsequent drying, calcining and milling. The F/Mn co-doped SnO2 nanopowder with a size of about 12 nanometers and uniform dispersion can be prepared by the preparation method.

The invention provides a rectification pretreatment and the salt treatment method for high-salt and high-organic-matter wastewater. The high-salt and high-organic-matter wastewater firstly passes through a sedimentation tank and then passes through an adjusting tank, acid or alkali liquor is added, the pH value in the water is adjusted to be 7-9, and then the rectification pretreatment is carriedout to evaporate out organic matters with low boiling points, the organic matters with low boiling points in the wastewater are evaporated to obtain the organic matters with low boiling points, wherein the concentration of the organic matters with low boiling points is between 50% and 99%, and the recovery rate is between 60% and 99.9%. The wastewater from which the organic matters with low boiling points are evaporated out enters evaporation crystallization, and salt in the wastewater is crystallized. The crystallized salt is subjected to pyrolysis, the organic matters entrained in the salt are converted into carbon dioxide and water, the pyrolyzed salt can meet the industrial requirement, and meanwhile heat is recovered for heat consumption of rectification pretreatment.

The invention relates to the field of denitration, and discloses TiO2-WO3 composite nano powder, a preparation method thereof, an SCR denitration catalyst and a flue gas denitration method. The preparation method of the TiO2-WO3 composite nano powder comprises the following steps: (1) cleaning and ball-milling a waste denitration catalyst to obtain crushed granules, and adding a strong alkali solution to carry out hot alkali treatment and first filtration to obtain filter residues; (2) carrying out acid pickling and water washing on the filter residues, and carrying out second filtration to obtain titanium-tungsten raw powder; and (3) roasting the titanium-tungsten raw powder to obtain the TiO2-WO3 composite nano powder. The preparation method of the TiO2-WO3 composite nano-powder is simple in process and low in cost and can be achieved at a relatively low temperature and under normal pressure, the prepared TiO2-WO3 composite nano-powder has a relatively high specific surface area, anda denitration catalyst prepared from the composite nano-powder has relatively high denitration efficiency.

The invention relates to a method for synthesizing polypyrrole in an oil solvent. The method comprises the following steps: sodium dodecyl sulfate, polyethylene glycol 6000, polyvinyl pyrrolidone, ethanol, butanol, peracetic acid, benzoyl peroxide, pyrrole monomer and the oil solvent are fully stirred under the condition of the room temperature or ice bath; the mixture is then subjected to ultrasonic, washing and drying, and a black polypyrrole product is obtained. According to the method, benzoyl peroxide is used as strong oxidant, and trichloromethane (isopropanol, cyclohexane, acetone, methylbenzene and the like) is used as the oil solvent. Therefore, polypyrrole polymers with the advantages of high purity, large yield, good stability, fast reaction, mild reaction conditions, high temperature resistance, good anti-pressure capacity, low cost input and the like can be prepared.