39 results about "Iso butanol" patented technology

The invention relates to a high-tolerance PMP hollow fiber degassing membrane and a preparation method and application thereof.The high-tolerance PMP hollow fiber degassing membrane comprises a body, one side of the body is an inner surface facing an inner cavity, the other side of the body is an outer surface, a non-directional zigzag channel is formed in the body, and the thickness of the degassing membrane is 10-50 microns; the O2 permeation rate of the degassing membrane is 10 to 100 ml / (min.bar.m < 2 >); the XRD crystallinity of the degassing film is not lower than 60%; the degassing film contains a crystal form I belonging to a tetragonal crystal system, wherein the crystal form I accounts for 60-98.5% of the whole crystal form; under the action that the air inlet pressure is 0.5 MPa, an isobutanol solution containing methyl orange serves as a standard solution to fill the outer surface of the hollow fiber degassing membrane, breakthrough time testing is conducted on the hollow fiber degassing membrane, and the breakthrough time of the hollow fiber degassing membrane is larger than 60 min. The degassing membrane disclosed by the invention is mainly suitable for being applied to the field of liquid systems with certain corrosivity and relatively active chemical properties, such as ceramic ink, UV ink and the like, and has the advantages of extreme tolerance, good degassing rate and relatively high degassing efficiency.

The invention discloses a preparation method and application of a hydrotalcite-loaded modified ruthenium-based catalyst, and belongs to the technical field of catalyst preparation, and the preparation method comprises the following steps: preparing a hydrotalcite carrier; adding the hydrotalcite carrier into isobutanol, and uniformly dispersing; mixing anhydrous ruthenium chloride, aluminum nitrate nonahydrate and cerium nitrate hexahydrate, adding the mixture, and uniformly dispersing; heating to 40-100 DEG C, aging for 1-10 hours, and stirring at a constant temperature until the solvent is completely volatilized; grinding to obtain a powdery solid; gradually heating the powdery solid to 200-500 DEG C in a nitrogen atmosphere, roasting for 2-8 hours, introducing hydrogen, adjusting the temperature to 200-600 DEG C, and reducing at constant temperature for 1-6 hours; and after the reduction is finished, cooling to normal temperature in a nitrogen atmosphere to obtain the hydrotalcite-loaded modified ruthenium-based catalyst. The hydrotalcite-loaded modified ruthenium-based catalyst prepared by the preparation method provided by the invention is high in stability, and has the advantages that the active components are not easy to lose, the service life is long, the selectivity is high, the reaction product is easy to separate, and the like.

The present invention relates to the technical field of clean fuels, and in particular to an ether-based clean fuel for vehicles and a preparation method thereof, comprising the following raw materials in parts by weight: 35-45 parts of methyl tert-butyl ether, 15-20 parts of isobutanol, 10-15 parts of methanol, 4-7 parts of flaky graphene agents based on doping cerium / yttrium, 2-4 parts of dimethyl ether, 1-3 parts of ferrocene, and 3-6 parts of regulating modifiers. The clean fuel of the present invention adopts methyl tert-butyl ether to match isobutanol, methanol, dimethyl ether and ferrocene raw materials, and the flaky graphene agent based on doping cerium / yttrium and the regulating modifier are added to coordinate and synergize, so that the combustion performance of the product is excellent, and the corrosion performance and water resistance of the product are remarkable, the product performance balance and coordination are improved, and the product has a remarkable product performance stability effect in a low temperature environment.

The invention provides an optical fiber coating adhesion promoter as well as a preparation method and application thereof. The optical fiber coating adhesion promoter is prepared from the following components in parts by mass: 20 to 25 parts of modified epoxy resin, 4 to 7 parts of epoxy acrylate, 12 to 16 parts of modified filler, 32 to 38 parts of propylene glycol methyl ether acetate, 13 to 18 parts of isobutanol, 6 to 10 parts of phosphoric acid and 5 to 7 parts of water. The preparation method of the modified epoxy resin comprises the following steps: (1) in a nitrogen environment, heating epoxy resin to 135-140 DEG C, then adding N, N-dimethyl benzylamine, and keeping the temperature for 8-10 hours to obtain a polyepoxy compound; and (2) sequentially adding N-methylethanolamine and amino-terminated liquid nitrile rubber into the polyepoxy compound, reacting at 125-130 DEG C for 6-8 hours, and cooling to room temperature to obtain the modified epoxy resin. The adhesion promoter for the optical fiber coating can improve the adhesion between the optical fiber and the coating and improve the reliability of the optical fiber.

The present invention addresses the problem of improving the aftertaste of the taste of a preservative, which may be generated after a beverage obtained from a beverage base is drunk. A specific fatty acid and isobutanol are used in a specific weight ratio.

The present invention discloses a methylated amino resin and its synthesis method, belonging to the technical field of amino resin preparation, and comprising the following steps: adding methanol to the hydroxymethylated intermediate product, adjusting the pH to 3 - 4.2 with acid, controlling the temperature at 60 - 65 °C, carrying out a heat preservation reaction for 3 - 4 h, then adjusting the pH to 8.8 - 9 with alkali, raising the temperature to 110 - 115 °C for distilling off water, cooling to 45 - 50 °C and adding auxiliary components, then raising the temperature to 85 °C for a constant temperature reaction for 3 - 4 h, after cooling to room temperature, standing for 4 - 6 h and then filtering, heating the filtrate under normal pressure for distillation for 1 - 2 h, then starting the vacuum system, with a vacuum degree of -0.085 MPa, carrying out heat preservation treatment at 70 °C for 3.5 - 4 h, pumping the product into the finished product kettle, adding isobutanol, and stirring evenly to obtain the methylated amino resin. Compared with the existing methylated amino resin, the content of free formaldehyde is lower, and the paint film formed after crosslinking has good toughness and good water resistance.

The invention provides a preparation method of a catalyst for preparing maleic anhydride through butane oxidation, and belongs to the technical field of molecular sieve catalysts. According to the method, a methanol and formaldehyde (or paraformaldehyde) pretreatment step is added after an isobutanol and benzyl alcohol reduction step, and the reduction degree of non-valent vanadium can be improved through pretreatment of a methanol and formaldehyde mixed system, so that the catalytic activity of the finally obtained catalyst is improved. In addition, the molybdenum element is added into the vanadium-phosphorus catalytic system, so that the selectivity and the yield of maleic anhydride can be further improved.

To improve the lingering aftertaste of preservatives that may occur after the drinking of a beverage derived from a beverage base.SOLUTION: The present invention uses a specific fatty acid and isobutanol at a specific weight ratio.SELECTED DRAWING: None

The application relates to the technical field of building thermal insulation materials, and particularly discloses a gel nano thermal insulation mortar and a preparation method thereof. The gel nano thermal insulation mortar is prepared from the following raw materials in parts by mass: vitrified microbeads 75-85 parts, hydrophobic pretreated nano silicon dioxide aerogel 90-110 parts, modified potassium silicate solution 310-330 parts, deionized water 430-470 parts, dispersant 4-6 parts, wetting agent 1.5-2 parts, composite defoaming agent 4-5 parts, hydroxyethyl cellulose 2.5-3.5 parts, quaternary ammonium salt 9-11 parts, thickening agent 2-4 parts, mildewproof and alga-resistant agent 2-4 parts, preservative 2-4 parts, bactericide 0.4-0.6 parts and isobutanol amine 0.8-1.2 parts. The gel nano thermal insulation mortar prepared by the application realizes synchronous optimization of thermal insulation performance and mechanical performance.

The invention relates to the field of clothes, in particular to a multi-color zipper and a preparation method thereof. According to the multi-color zipper provided by the invention, at least one of the accessories is made of metal, and the surface of the metal is covered with the paint layer, so that the zipper accessories present different colors from different angles; paint used by the paint layer comprises 8%-15% of mica group mineral powder; the paint is prepared from, by weight, 22%-28% of acrylic resin, 40%-46% of xylene, 5%-9% of ethylene glycol monobutyl ether, 4%-8% of isobutanol and 9%-13% of epoxy hardener. Wherein the mica group mineral powder is mixed powder 1 or mixed powder 2; wherein the mixed powder 1 is mixed powder of mica, rutile and aluminum oxide; the mixed powder 2 is mixed powder of mica, rutile, anatase and tin oxide. According to the invention, the product can show different colors at different angles, the problem of single color is overcome, a liquid medicine oxidation process is not needed for processing, and labor and resources are saved.

The present disclosure provides an equipment for production of butanol and octanol and a triple-effect distillation method, comprising two processes: butanol separation and octanol separation, both processes use same feedstocks to obtain n-butanol, iso-butanol and octanol products through different procedures, respectively, wherein butanol separation process is sequentially divided into hydrogenation, removal of light and heavy components and separation of isomeric; and octanol separation process is sequentially divided into separation of isomeric, hydrogenation and removal of light and heavy components; the removal of light and heavy components for butanol is carried out by a butanol pre-distillation column and a butanol distillation column, and the separation of isomeric for butanol is carried out by a first butanol isomer column and a second butanol isomer column; and the separation of isomeric for octanol is carried out by a first butyraldehyde isomer column and a second butyraldehyde isomer column.

The invention relates to the technical field of reaction devices, in particular to a micro-channel reaction device for isobutanol polyoxyethylene ether production, which comprises a reaction base station, a micro-channel is arranged on the reaction base station, sealing matching strips are symmetrically and fixedly arranged on two sides of the micro-channel, and the sealing matching strips are arranged on the reaction base station. A reaction channel sealing mechanism is arranged on the reaction base station, a supporting assembly used for bearing the reaction channel sealing mechanism is further arranged on the reaction base station, and the reaction channel sealing mechanism is matched with the sealing matching strip to achieve sealing of the microchannel on the reaction base station. The method includes the following steps that firstly, a movable sealing table is unlocked; secondly, the movable sealing table moves upwards; 3, cleaning the closed surface of the movable closed table; 4, cleaning the inner wall of the micro-channel; and 5, the movable sealing table is fixed.

A continuous reaction system for N-allyl-O-isobutyl thiocarbamate comprises a reaction kettle, the top of the reaction kettle is communicated with an allyl isothiocyanate feeding pipe, an isobutanol feeding pipe and a catalyst feeding pipe, the top of the reaction kettle is communicated with a front distillation receiving tank, the bottom of the reaction kettle is communicated with a mixer through a pipeline, and the front distillation receiving tank is communicated with the mixer through a pipeline. A bottom valve is arranged on a pipeline between the reaction kettle and the mixer, the bottom of the mixer is communicated with the top of the storage tank, the bottom of the storage tank is communicated with an inlet of the continuous reactor, and an outlet of the continuous reactor is communicated with the receiving tank through a pipeline. According to the continuous production device disclosed by the utility model, front fractions are removed through pre-distillation, then are fully mixed and then are fed into the continuous reactor for heating reaction through steam, so that continuous production of N-allyl-O-isobutyl thiocarbamate is realized; and meanwhile, the device has the characteristic of continuous and automatic operation, the requirements of manual intervention and operation can be reduced, and the labor cost is reduced.

The invention discloses a concealed-grid writing color-coated sheet and a preparation method thereof, and relates to the field of color-coated sheets. The concealed grid writing color-coated sheet comprises a galvanized steel sheet or a cold-rolled steel sheet, a primer layer, a concealed grid layer and a green board finish paint layer, wherein the concealed grid layer is obtained by printing concealed grid paint consisting of 14 to 18 weight percent of fluorescent pigment, 30 to 35 weight percent of polyester resin, 10 to 12.5 weight percent of amino resin, 0.1 to 0.3 weight percent of acid catalyst, 0.5 to 0.7 weight percent of defoaming agent, 0.5 to 0.7 weight percent of flatting agent, 0.5 to 0.7 weight percent of wetting dispersant and the balance of solvent; the solvent is a mixed solvent of ethyl acetate, isobutanol and butyl ether in a weight ratio of (4-5): (2-3): 3. The concealed grid writing color-coated sheet is long in service life and not prone to abrasion, the concealed grid layer can only display at a short distance, the concealed grid layer cannot be seen clearly at the distance larger than 2 meters, attractiveness is not affected, and the concealed grid writing color-coated sheet is widely applied to teaching of kindergartens and primary schools.

The present invention relates to the field of photolithography and discloses a corrosion-resistant anti-reflective coating composition, its preparation method, and its application. The corrosion-resistant anti-reflective coating composition comprises the following components in parts by weight: 15-20 parts acrylic resin, 2-4 parts catalyst, 6-8 parts cross-linking agent, and 300-700 parts solvent. The cross-linking agent is a mixed etherified melamine resin, which comprises a first mixed etherified melamine resin and a second mixed etherified melamine resin. The etherifying agents for the first mixed etherified melamine resin are methanol and n-butanol, while those for the second mixed etherified melamine resin are methanol and isobutanol. This technical solution addresses the poor corrosion resistance of anti-reflective coatings in related technologies.

The present invention addresses the problem of improving a preservative aftertaste that may occur after drinking a beverage obtained from a beverage base. The present invention uses a specific fatty acid and isobutanol at a specific weight ratio.

The invention discloses a preparation method of waterborne polyurethane, which belongs to the field of polyurethane and comprises the following steps: step 1, obtaining sodium isobutoxide; 2, methanol amine and sodium isobutoxide are subjected to a contact reaction, and a first reactant is obtained; step 3, subjecting bromoisobutane and the first reactant to a contact reaction so as to obtain a second reactant, and removing impurities so as to obtain isobutoxy etherified methanol amine; 4, polyester polyol, polyether polyol or a mixture of the polyester polyol and the polyether polyol react with isocyanate to generate a third reactant of which the chain end is an isocyanate group, and the third reactant and isobutoxy etherified methanol amine are mixed and react to obtain a polyurethane prepolymer; step 5, emulsifying the polyurethane prepolymer to obtain waterborne polyurethane; the invention also discloses the polyurethane and application thereof.

The utility model discloses a distributor applied to an esterification reaction kettle. The distributor comprises a reaction kettle, an extracting agent inlet and a phthalic anhydride inlet are formed in the reaction kettle; a distributor and a liquid guide disc are arranged in the reaction kettle, the liquid guide disc is positioned at the upper part of the distributor, and pipe bodies of the extracting agent inlet and the phthalic anhydride inlet are positioned at the upper part of the liquid guide disc; the liquid guide disc is circular, a hemisphere part is arranged in the middle of the liquid guide disc, and an overflow plate bent upwards is arranged on the edge of the hemisphere part; the upper edge of the distributor extends out of the baffle to form a liquid containing part, the lower part of the distributor is provided with a plurality of diversion holes to form a downward flowing part, and a plurality of ventilation parts are arranged on the circumference of the outer side wall of the distributor. According to the reaction kettle, the distributor and the liquid guide disc are arranged in the reaction kettle, an extracting agent and phthalic anhydride are mixed by the liquid guide disc and then flow into the distributor, and reaction liquid is further mixed by the flow dividing holes in the distributor and uniformly flows into the bottom of the reaction kettle to react with isobutanol, so that rapid reaction can be realized without stirring; the energy consumption is reduced; the reaction rate of the reaction kettle is improved.

The present invention discloses Monovir Form VII and a preparation method thereof, and belongs to the field of compound crystal forms. The X-ray powder diffraction spectrum of Monovir Form VII measured using Cu-Kα rays is shown in Figure 1. The Monovir Form VII is prepared by adding isobutanol to Monovir, dissolving it, and then using a cooling crystallization method or a solvent evaporation method to obtain Monovir Form VII crystals. The preparation process is simple, and the obtained crystal form has high purity. It is determined to be a new crystal form, Form VII, through the characterization of XRPD, X-ray single crystal diffraction, DSC, and TG.

This invention belongs to the field of environmentally friendly fuel technology, specifically relating to a method for preparing a green, low-carbon, and highly efficient modified fuel for alcohol-hydrogen engines. This invention comprehensively improves fuel performance through a progressive synergistic architecture of a bio-methanol platform – an oxygen-containing combustion-promoting system – a stability barrier – and a low-energy-consumption blending path. Using bio-methanol as a base, it optimizes combustion by compounding with oxygen-containing components such as 2-MTHF and DMM / MF, achieving rapid ignition, emission reduction, and noise reduction. Phase behavior is regulated by isobutanol and polyether-modified silicon, achieving a reversible and stable phase without the need for high-HLB surfactants, preventing deposition and gas lock. A four-fold protective barrier is constructed using GMO and fluorinated silica polyethers, combined with antioxidant synergy to achieve corrosion resistance and aging resistance. The process adopts a sequential design of front-end purification – mid-stage two-phase construction – and end-stage static mixing, achieving low-energy homogenization and ensuring storage, transportation, and operational stability.

The present invention relates to a process for the reduction of reactor fouling in a high pressure polymerization reactor comprising a siloxane-bonded polymer layer adhered to at least one reactor wall, wherein the process comprises contacting the siloxane-bonded polymer layer with an alcohol in an amount of not more than 2 wt.-%, based on the total amount of the reactor feed, wherein the alcohol is in supercritical state. The alcohol may be selected from the group consisting of methanol, ethanol, n-propanol, iso-propanol, n-butanol, and iso-butanol, or a combination thereof. The siloxane-bonded polymer layer may comprise an ethylene copolymer. The above process improves heat transfer at the reactor walls by reducing or removing said siloxane-bonded polymer layer and reducing fouling phenomena. This in turn improves product output, process control, product quality and reproducibility of the obtained polymers, and decreases down-time of the reactor.

The utility model discloses a rectification device in an isobutanol production process, which comprises a rectification tank, a condenser and a reboiler, the condenser is arranged at the top of the rectification tank and is used for circularly condensing gaseous materials, the reboiler is arranged at the bottom of the rectification tank and is used for circularly gasifying liquid materials, a feeding pipe is arranged on the outer side of the rectification tank, and the feeding pipe is communicated with the reboiler. Flow guide partition plates which are vertically arranged are fixedly mounted in the rectification tank. Recondensed liquid gathers on the flow guide partition plate, the liquid level exceeds the overflow plate and flows downwards, steam at the bottom flows upwards along the air holes in the flow guide partition plate under the action of pressure, gas-liquid two-phase contact is achieved, and meanwhile due to the fact that the flow equalizing cover on the flow guide partition plate is completely immersed by stock solution, the flow equalizing cover is completely immersed by the stock solution. The stock solution at the bottom is heated by the reboiler to form steam, and the steam rises and is dispersed by the flow equalizing cover, so that more efficient contact efficiency with the stock solution is realized, and the device has the advantages of high gas-liquid double-phase contact efficiency, improvement of rectification efficiency and reduction of equipment energy consumption.

The present invention relates to substituted 4-methylene-tetrahydropyrans, 4-methyl-dihydropyrans and 4-methyl-tetrahydropyrans of formula (I), where the variables are as defined in the claims and description, to a stereoisomer thereof, to a mixture of stereoisomers thereof, to a mixture of different di- and tetrahydropyrans (I) and to a mixture containing at least one di- or tetrahydropyran (I) and at least one cyclic acetal which is a 1,3-dioxan carrying in 2-position an isobutanol-2-yl-(derived) substituent and in 4,4- or 5,5-position two methyl substituents. The invention also relates to the use of such compounds as an aroma chemical and / or for modifying and / or enhancing the aroma of a composition, to compositions comprising such compounds, to methods for preparing such compounds and to a product obtainable by these methods.

The preparation method comprises the following steps: stirring sulfenamide, isobutanol, # imgabs0 # MS, metal center chiral cobalt (III) complex anions and ultra-dry tetrahydrofuran at the temperature of minus 40 DEG C for 30 minutes, then adding N-iodosuccinimide, reacting at the same temperature for 36 hours, filtering, washing and drying to obtain the chiral sulfur imine ester compound. After the reaction is finished, quenching by using a Na2S2O3 aqueous solution, and separating and purifying to obtain the chiral sulfur imine ester compound. The chiral sulfur imine ester compound prepared by the invention provides a stable and practical method for solving the challenging asymmetry problem in sulfur stereochemistry, and opens up a way for novel chiral sulfur-containing compounds which are widely applied in the fields of medicines and pesticides.

The invention discloses a preparation method of a vanadium phosphorus oxide catalyst for preparing maleic anhydride through n-butane oxidation. Comprising the following steps: (1) adding vanadium pentoxide and a template agent A into an isobutanol and benzyl alcohol solution for reaction; (2) cooling, adding strong phosphoric acid and a template agent B, and heating for reaction to obtain a precursor of the vanadium phosphorus oxide catalyst; and (3) activating the precursor to obtain the vanadium phosphorus oxide catalyst with hierarchical pores. The nano vanadium phosphorus oxide catalyst with a hierarchical pore structure is formed by adopting a double-template method, so that the diffusion limitation of a traditional vanadium phosphorus oxide catalyst during reaction is overcome, the specific surface area and the surface acidity of the catalyst are increased, and the catalytic activity and the stability of maleic anhydride prepared by oxidizing n-butane are improved.

The present disclosure provides an equipment for production of butanol and octanol and a triple-effect distillation method, comprising two processes: butanol separation and octanol separation, both processes use same feedstocks to obtain n-butanol, iso-butanol and octanol products through different procedures, respectively, wherein butanol separation process is sequentially divided into hydrogenation, removal of light and heavy components and separation of isomeric; and octanol separation process is sequentially divided into separation of isomeric, hydrogenation and removal of light and heavy components; the removal of light and heavy components for butanol is carried out by a butanol pre-distillation column and a butanol distillation column, and the separation of isomeric for butanol is carried out by a first butanol isomer column and a second butanol isomer column; and the separation of isomeric for octanol is carried out by a first butyraldehyde isomer column and a second butyraldehyde isomer column.

The invention relates to the technical field of building thermal insulation materials, and particularly discloses gel nano thermal insulation mortar and a preparation method thereof. The invention relates to gel nano thermal insulation mortar. Comprising the following raw materials in parts by mass: 75-85 parts of glass beads, 90-110 parts of nano silicon dioxide aerogel subjected to hydrophobic pretreatment, 310-330 parts of a modified potassium silicate solution, 430-470 parts of deionized water, 4-6 parts of a dispersing agent, 1.5-2 parts of a wetting agent, 4-5 parts of a composite defoaming agent, 2.5-3.5 parts of hydroxyethyl cellulose, 9-11 parts of quaternary ammonium salt, 2-4 parts of a thickening agent, 2-4 parts of an anti-mildew and anti-algae agent, 2-4 parts of a preservative, 0.4-0.6 part of a bactericide and 0.8-1.2 parts of isobutanol amine. According to the prepared gel nano thermal insulation mortar, the thermal insulation property and the mechanical property are synchronously optimized.

The present invention belongs to the technical field of oilfield chemistry, and particularly relates to an emulsion-proof demulsifier for treating oilfield produced liquid and a preparation method thereof. The preparation method is as follows: Add p-aminopyridine, 37 wt% formaldehyde, formic acid, and distilled water into a reactor, heat and reflux for reaction, cool, and perform vacuum distillation to obtain a viscous liquid; Dissolve the above viscous liquid with isobutanol, add chloroethanol, heat and reflux for reaction, perform vacuum distillation to obtain a viscous reddish-brown solid, and recrystallize to obtain a white-like solid; Dissolve the above white solid with toluene, transfer it to a high-pressure reactor, add a catalyst, introduce propylene oxide, raise the temperature, keep the temperature, lower the temperature, adjust the pH, and perform vacuum distillation to obtain the product emulsion-proof demulsifier. The emulsion-proof demulsifier of the invention has the characteristics of simple synthesis process and good emulsion-proof and demulsification effects.

This invention relates to the field of coating technology, and in particular to waterborne epoxy polyamide coatings, their preparation methods, and applications. The waterborne epoxy polyamide coating comprises component A and component B; component A includes waterborne epoxy resin, thickener, defoamer, flash rust remover, pigments and fillers, fumed silica, regulator, and water in a specific ratio; component B includes waterborne epoxy polyamide curing agent, plasticizer, defoamer, regulator, flash rust remover, pigments and fillers, fumed silica, anti-caking agent, thickener, ammonia, isobutanol, and water in a specific ratio; the mass ratio of component A to component B is 0.5–1.5:1. This coating exhibits good corrosion resistance, hardness, extremely strong adhesion, good flexibility, film-forming properties, workability, and leveling properties, and can achieve integrated application of putty and primer.

The invention provides a continuous preparation process of triisobutyl phosphate, which comprises four steps of esterification, deacidification and dealcoholization, refining and isobutanol recovery, in the esterification process, the specific surface area of fluid in a reactor is increased, the reaction rate is increased, the conversion rate of raw materials is ensured, the use of an acidic catalyst in the esterification process is avoided, and the yield of the product is improved. The production of by-products such as HCl in the esterification process is reduced, the alkali washing column is used for replacing the water washing process, the water washing process and the alkali neutralization process can be integrated into one process, the production of phosphorus-containing and acid-containing wastewater is reduced, the wastewater treatment cost is greatly reduced, excessive isobutanol is recycled in the dealcoholization process, and the production cost is reduced. Raw material waste caused in the washing process is avoided, the utilization rate of the raw materials is increased, production energy consumption is reduced, the green chemistry concept and the national environment-friendly emission standard are met, and the method has the advantages of being high in economic benefit, energy-saving, environment-friendly, simple in actual operation and convenient to popularize and implement.