52results about How to "Reasonable technical route" patented technology

A technology for finishing the water-, oil-and dirt repellent polyester fabric includes such steps as preparing the finishing liquid from organofluorine composite nano material dispersed liquid and flexible-type self-crosslinking adhesive, dipping it in the finishing liquid for 0.5-1 min, squeezing, prebaking at 100-110 deg.C for 1-2 min, and baking at 130-180 deg.C for 3-5 min. Its advantages are excellent "three repelling" function, better durability and high washing resistance.

The invention discloses a polypeptide germinated-soybean milk production method, which comprises the following processes of: selecting soybean; performing germination treatment; grinding into milk; performing heat treatment; performing enzymolysis twice by using mixed enzyme; blending nutrient; homogenizing and sterilizing; performing vacuum deodorization; and performing sterile filling to obtain the finished product. By adopting the mixed enzyme technology, soybean protein is hydrolyzed into polypeptide substances, and substances such as cellulose, pectin and the like are effectively subjected to enzymolysis, so that nutrients are easy to absorb. Nutrition enhancement is carried out aiming at different people, so that the nutritional value of the product is improved and the product has unique physiological functions of preventing and treating cardiovascular disease and the like. Beany flavor and bitter substances of the produced product are removed, so that the product is fine and smooth, and pure in taste, and a process technology route is reasonable.

The invention discloses a liquid sulphur collecting method suitable for a sulfur recovery device. Process gas of the sulphur recovery device enters a process gas condensate cooler to carry out gas-liquid separation; condensed and separated gas enters the next stage of reaction or condensate cooling system after a liquid sulphur catcher traps the liquid sulphur; the condensed liquid sulphur is collected by a liquid sulphur collector below the process gas condensate cooler; the collecting process is controlled by a process operation module; the collected liquid sulphur is directly delivered to a sealed liquid sulphur middle tank with pressure; the liquid sulphur is fed to a liquid sulphur treatment system after passing through a liquid sulphur degassing pump after gas-liquid secondary separation; and the separate gas is separated from the final stage of process gas condensate cooler and enters a tail gas treatment unit together with the tail gas which is further separated by a tail gas delivery tank. By adopting the technology, arrangement of a sulphur sealing tank, a sulphur sealing tank pond and a liquid sulphur pond is concealed; the technologic process is shortened; the investment on the equipment is reduced; and pollution of the liquid sulphur, the hydrogen sulfide and related treatment technologies on the soil, environment and ground water quality is partially removed.

The invention provides a special method for finishing efficiently antibacterial, crease resistant and anti-ultraviolet all cotton terylene textile, comprising the following steps that: the fabric is subjected to padding by an antimicrobial FBR-5 mixing solution, an FSA softening agent and a uv resistant agent, after the high temperature preliminary drying and baking, each effect of the material is intensified, the three resisting effects are excellent; moreover, the textile processed by the method has the antibacterial protecting function and the function of blocking the radiation of ultraviolet radiation on human body, the antibacterial grade is up to seven, the anti-ultraviolet grade is up to five, and the water washing is up to the fourth after the crease resisting process for 12 times. The textile has good durability and washability, feels cool and refreshing if a person wears the textile in the summer, ensures that skin feels comfortable and moderate and has fresh and clean as well as lasting odorant.

The invention discloses a preparation method of albumen antioxidant peptide. Egg albumen powder is used as main raw material, and the raw material is separated and purified through processes of thermal denaturation, enzymolysis,ultrafiltration, ion exchange, gel filtration, vacuum concentration and drying and the like to obtain the albumen antioxidant peptide with high activity. According to the invention, the albumen is subjected to enzymolysis with alkali protease, and albumen enzymolysis peptide with low molecular weight and high antioxidant activity is obtained through separation. In addition to reduction of antigenicity of albumen, improvement of functional characteristics and easiness for absorption, the product can also inhibit and eliminate free radicals as well as adjust and improve physiological functions, and can be applied to the research and development of medicines for preventing and treating chronic diseases. A new way for improving the additional value of the albumen, further processing eggs and application of eggs is developed, and the preparation method has wide market prospect.

The invention belongs to the technical field of rare-earth permanent magnet materials and relates to a rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and a system and method thereof. A rotary hydrogen storage tank body (10) of the device is made of a hydrogen storage alloy material. An output end (6) and an input end (7) which are symmetrical and communicate with each other are arranged on the rotary hydrogen storage tank body (10). The output end (6) and the input end (7) are each internally provided with a filter screen (1). A sealing rotating shaft (2) is arranged at the outer side of each filter screen (1), and the sealing rotating shafts (2) are mounted on a storage tank rotation driving mechanism. An exhaust opening (5) is formed in the output end (6). A spiral piece (9) is arranged inside the rotary hydrogen storage tank body (10). A heating device (3) and a cooling device (4) are arranged at the outer side of the rotary hydrogen storage tank body (10) in a manner that the heating device (3) and the cooling device (4) are close to but not in contact with each other. The rare-earth permanent magnet hydrogen storage device and the system and method thereof are reasonable in process flow and simple in equipment structure and have industrial application value and wide application prospect.

The invention discloses a bacilluscereus (Bacilluscereus1205) and an application thereof. The morphological characteristics are as follows: the 1205 bacterial strain is cultivated on an ordinary agar plate culture medium at 37 DEG C for 36 hours, the bacterial colony is nearly round, grey white, non-transparent and as large as 3-7mm, the edge is irregular and expanded, the surface is rough, granulated and is like ground glass or wax, no pigment is secreted; the bacilluscereus is a gram positive bacteria, rod-shaped, 1.0-1.3*3.0-5.0 micrometer, chaining and moveable; the spore is ellipse, terminal or secondary terminal and unclearly expanded; and the bacilluscereus can endure the cultivation of 7% NaCl. The bacilluscereus has the characteristics of strong stress resistance, simple nutritional requirement, stabilization, easy colonization, stability to light and ultraviolet, low cost, long storage period, is easy to apply and realize industrialization, and has a certain growth promoting effect on tobaccos.

The invention discloses Daldinia childiae L2Ma and application thereof in preparation of bacterium grain wood, belonging to the technical field of microorganisms. The strain is collected in China General Microbiological Culture Collection Center; the address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing City; and the collection number is CGMCC No:5954. The strain has excellent impregnation capability for a wood-based material, the impregnation time is short, and the impregnation depth is large; beautiful colors and grains can be formed on the surface of the material; and the physical mechanical strength is not influenced. A method for preparing a bacterium grain wood by using the strain comprises the steps of strain activation, expanding propagation and inoculation culture; and the method comprises the following specific steps: inoculating the strain on an activation and expanding propagation culture medium, performing activation and expanding propagation at 22-30 DEG C for 7-15 days, sterilizing the wood-based material, enabling the wood-based material to be sufficiently in contact with the strain subjected to activation and expanding propagation, and culturing at 22-30 DEG C for 6-8 weeks. According to the invention, the method is reasonable in process and simple to operate; and the prepared bacterium grain wood has favorable decoration effect and has no influence on the physical mechanical property of the base material, thereby being beneficial to large-scale production and popularization.

The invention discloses a method for increasing content of Cordycepin, which comprises the following steps: inoculating Paecilomyces miliraris 08-01 to a PDA (potato dextrose agar) slant culture medium, culturing at 26 DEG C for 5 days, activating three times, inoculating into the PDA liquid seed culture medium, carrying out shake culture at 140rpm at the temperature of 26 DEG C for 3 days to obtain a liquid seed, inoculating into the PDA fermentation culture medium (the inoculum size is 4%(V / V)), adding organic solvent oleic acid (v / v is 6-8%) at the same time, and carrying out shake culture at 140rpm at the temperature of 26 DEG C for 7 days to obtain the Cordycepin. The method has the advantages of obviously increased Cordycepin content, accessible culture medium and stable and simple fermentation conditions.

The invention discloses a method for producing PUFA (polyunsaturated fatty acid) by utilizing potato in an Aspergillus niger xj strain. The method comprises the following steps of inoculating the Aspergillus niger xj strain in a PDA (potato dextrose agar) solid agarslantculture-medium to culture for three days at 27 DEG C and activate for three times, inoculating in a PDA liquid seed culture medium again to culture in a shake flask for three days at 27 DEG C and150rpm to obtain a seed liquid, transplanting the seed liquid in a 13L PDA fermentation medium according to a proportion of 5%(v / v) at 28+ / -1 DEG C and a stirring speed of 200-300rpm, controlling the ventilation amount within 1-2L / min, culturing for five days and stopping fermenting; and filtering through four layers of sterile gauze to remove mycelium, and collecting fermentation liquid to obtain the PUFA. According to the method for producing the PUFA, disclosed by the invention, the content of the obtained unsaturated fatty acid is high, the culture medium is easy to obtain, the fermentation conditions are stable, and the process is simple.

The invention relates to a method for producing starch icing sugar using starch syrup as a raw material. The method comprises the following steps that vacuum boiling is conducted on the starch syrup raw material at the temperature which is lower than sugar-boiling temperature until the water content is 0.5-6wt%, cooling and smashing are conducted, and the starch icing sugar is obtained. The method for producing the starch icing sugar using the starch syrup as the raw material is scientific, reasonable and feasible in technical route and high in adaptability, and can be closely combined with actual production, a whole series of starch icing-sugar-shaped products can be produced by one set of equipment, and the method has great economic and social benefits and popularization and application prospects.

The invention discloses a method for preparing hexagonal flaky flame-retardant magnesium hydroxide from natural hydromagnesite. The method comprises the following steps of S1, crushing and screening the natural hydromagnesite, S2, calcining the crushed and screened natural hydromagnesite to obtain active magnesium oxide, S3, screening the active magnesium oxide, S4, preparing a magnesium oxide suspension by taking active magnesium oxide as a raw material and deionized water as a solvent, S5, putting the magnesium oxide suspension into a closed heating device for heating reaction to obtain a solution, and S6, taking out the solution, naturally cooling to room temperature to obtain a product, and filtering, washing and drying the product to obtain the hexagonal flaky magnesium hydroxide. The hexagonal flaky flame-retardant magnesium hydroxide with good dispersity and regular morphology can be obtained without adding any other raw materials or auxiliaries in the process of the method, and the method has the advantages of low raw material cost, simplicity in operation, high product purity and the like.

The invention discloses a preparation method and application of a polypyrrole / phytic acid / graphene oxide composite anti-corrosion coating. The preparation method comprises the following steps: systematically adjusting and controlling the concentration and ratio of pyrrole monomer, phytic acid and graphene oxide dispersion liquid, and carrying out direct electro-deposition of the composite coatingmaterial on the surface of stainless steel through the convenient one-step galvanostatic method. The polypyrrole / phytic acid / graphene oxide composite anti-corrosion coating is applied to corrosion protection of stainless steel in an acid environment to solve the problems that an existing conducting polymer anti-corrosion coating has micropores and is poor in adhesive force and does not have high stability. The preparation method is simple and can realize direct, rapid and large-area deposition of the coating material on the surface of stainless steel; and in addition, the coating is dense in structure and stable in anti-corrosion performance, and has excellent application prospect in the stainless steel material used in an oil and gas well and acid soil and a metal bipolar plate of a fuelcell.

The invention relates to a preparation method of separating and purifying silicon dioxide and cerous chloride from crystal stone wastes, belonging to the field of resource reuse, and is characterized by the following steps: 1) removing impurity: the crystal stone wastes is added with phosphoric acid as an impurity-removing agent and stirred to obtain a mixture of silicon dioxide and cerium oxide; and 2) separation: the mixture is added with concentrated hydrochloric acid as a separation agent, treated by water bath and filtration, the filtrate is evaporated and crystallized to fully precipitate cerous chloride heptahydrate crystals, which is oxidized to obtain cerium oxide crystals; the filter residues are dried at a temperature of <150 DEG C for 1 to 3 hours to obtain silicon dioxide. The preparation method achieves maximum utilization of resources of solid wastes, can transform trash into treasure and obtain phosphate by-products of high economic value and cerous chloride of high purity and high price, and also has advantages of low processing costs, highly pure target composition and significant economic benefits. The purification process follows the idea of clean production, energy saving and reducing emission so as to avoid the problem of environmental pollution.

The invention relates to the field of preparation of 2-alkyl anthraquinone. The invention specifically discloses a method for obtaining 2-alkyl anthracene through anthracene alkylation and preparing 2-alkyl anthraquinone through catalytic oxidation. The method comprises the following steps: anthracene makes contact with an alkylation reagent for an alkylation reaction, a reaction product containing alkyl anthracene is prepared, and an alkylation reaction solvent is a combination of a solvent A with the dielectric constant being 1-10 at the temperature of 20 DEG C and a solvent B with the dielectric constant being larger than 10 and smaller than or equal to 50 at the temperature of 20 DEG C; the anthracene is separated from the reaction product containing the alkyl anthracene through melt crystallization, and the 2-alkyl anthracene is separated through distillation; the 2-alkyl anthracene is contacted with an oxidizing agent for oxidation reaction. The alkylation combined solvent and the catalyst are adopted, so that the selectivity of the 2-alkyl anthracene is high; the adopted separation method can significantly reduce the separation operation difficulty, and the product purity ishigh; the adopted oxidation system is simple and efficient, and the catalyst is low in cost and easy to recycle.

The present invention belongs to the chemosyntheise field, which relates to a preparation method for allyl alcoh; the method adopts two-step reaction processes that are as follows: (1) sodium acetate is reacted with a 3-chloropropene in the alcohols catalyzer to create a propyl ester acetic acid alkene; (2) the propyl ester acetic acid alkene produced in Step 1 is reacted with a methanol alcohol in the resin catalyzer to create allyl alcoh. The present invention replaces the traditional ''One step'' technics with rational technical process and high conversion ratio for the material; the product is easy to be separated; the post-treatment technics is simpler; the produced waste can be recycled repeatedly; so the present invention can not only save the cost, but also can not pollute the environment; the technics process is stable and easy to be controlled and operated.

The invention discloses a waterborne tackifying resin exclusively used for cigarette holder glue, and relates to the technical field of chemical engineering. The tackifying resin comprises following components by weight: 40-50% of rosin, 2-4% of auxiliary agents, 2-10% of polyol, 3-10% of an emulsifier and 40-50% of water. Compared with the prior art, addition of the waterborne tackifying resin into an acrylate emulsion can overcome the disadvantage that the adhesive property of the acrylate emulsion to plastic is poor, and can effectively enhance the water tolerance of acrylate adhesives.

The invention relates to the field of preparation of 2-alkyl anthraquinone, and particularly discloses a preparation method of the 2-alkyl anthraquinone. The method comprises the following steps: (1)preparing a reaction product containing alkyl anthracene from anthracene; (2) separating the reaction product containing THE alkyl anthracene obtained in the step (1), wherein the separation method comprises carrying out melt crystallization to separate the anthracene and carrying out distillation to separate the 2-alkyl anthracene; and (3) preparing the 2-alkyl anthraquinone from the 2-alkyl anthracene obtained in the step (2). The method provided by the invention opens up a new direction for green preparation of the 2-alkyl anthraquinone, the method can significantly reduce the separation operation difficulty of a high-boiling-point high-melting-point mixture system, the separation efficiency is high, the product purity is 99.5%, and the yield is 94.23%.

The present invention discloses a strain of Xylaria venosula J22QIU and an application of the Xylaria venosula J22QIU in preparation of fungi pattern wood, and belongs to the technical field of microorganisms. According to the present invention, the strain is preserved in the China General Microbiological Culture Collection Center, the address is Institute of Microbiology, Chinese Academy of Sciences, 3# Court No.1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No:5964; the strain provides excellent dip dyeing ability for the wood base material, the dip dyeing time is short, the dip dyeing depth is high, beautiful color and texture can be formed on the material surface, and the physical and mechanical strength is not affected; the method for preparing the fungi pattern wood by using the strain comprises strain activation and propagation, and fungi inoculation culture, wherein the strain is inoculated on an activation and propagation culture medium, activation and propagation is performed for 10-15 days at a temperature of 22-30 DEG C, the wood base material is sterilized and completely contact the obtained strain, and culture is performed for 4-8 weeks at a temperature of 22-30 DEG C; and the method has characteristics of reasonable process and simple operation, the prepared fungi pattern wood has a good decorative effect, the physical and mechanical property of the substrate is not affected, and the method is suitable for large-scale production and promotion application.

The invention discloses a Trichoderma longibrachiatum strain (Trichodermallongibrachiatum GF-10) and its application. Its morphological characteristics: it grows rapidly on PDA, its back is colorless to yellow-green, and it can produce conidia when cultured at 28°C for 72 hours. Secondary branches of sporozoites are few, often protruding at right angles; phialides protrude directly from secondary branches, solitary, opposite, rarely whorled, gourd-shaped or flask-shaped, 5.3-11.6 μm long, wide 2.0-3.2 μm, conical shape of ultimate bottle stem; spores are gray-green or green, oval or oval, 3.4-6.6 μm long and 2.3-3.5 μm wide. The invention has strong tolerance to adverse environment, resistance to mutation, easy cultivation and preservation, and good effect of inhibiting tobacco black shank bacteria and tobacco red spot bacteria.

The invention relates to the field of preparation of 2-alkylanthraquinones, and specifically discloses a method for preparing 2-alkylanthraquinones by alkylation of anthracene and reacting them to prepare 2-alkylanthraquinones, the method comprising: (1) Under alkylation conditions and in the presence of an alkylation reaction solvent and a catalyst, anthracene is contacted with an alkylation agent to carry out an alkylation reaction to prepare a reaction product containing alkyl anthracene, and the alkylation reaction solvent is 20° C. A combination of solvent A with a dielectric constant of 1-10 and a solvent B with a dielectric constant of greater than 10 to less than or equal to 50 at 20°C; (2) melting and crystallizing the reaction product containing anthracene to separate anthracene and distillation Separating 2-alkylanthracene; (3) preparing 2-alkylanthraquinone from 2-alkylanthracene. The method provided by the invention opens up a new direction for the green preparation of 2-alkylanthraquinone.

The invention discloses a preparation method of a hydrophobic composite coating and an application thereof. The preparation method comprises the following steps: carrying out surface modification on inorganic nano silicon dioxide particles or titanium dioxide particles; adding the modified inorganic nanoparticles into a mixed emulsion of epoxy resin and a curing agent, and stirring to uniformly disperse the particles to obtain a composite coating material; and the inorganic nanofiller-epoxy resin composite anti-corrosion coating is constructed on the surface of metal copper by using the composite coating material through a roller coating method. According to the preparation method provided by the invention, the coating is endowed with hydrophobic property while the stability of the single epoxy resin coating is strengthened, the wear resistance of the coating and the barrier effect on a corrosive environment can be effectively improved, and the corrosion resistance of copper in a salt environment is further strengthened.

The invention relates to the field of preparation of 2-alkyl anthraquinone, and particularly discloses a method for preparing 2-alkyl anthraquinone by performing reaction on anthracene, performing separating to obtain 2-alkyl anthracene and performing catalytic oxidation on the 2-alkyl anthracene. The preparation method comprises the following steps: (1) preparing a reaction product containing the2-alkyl anthracene from the anthracene; (2) separating the anthracene from the reaction product containing the alkyl anthracene through melt crystallization and performing distillation seperation toobtain the 2-alkyl anthracene; and (3) under an oxidation condition and in the presence of an oxidation reaction solvent and a catalyst, contacting the 2-alkyl anthracene with an oxidizing agent for an oxidation reaction, wherein the oxidizing agent is tert-butyl hydroperoxide, the catalyst contains a carrier and an active component loaded on the carrier, and the active component is selected fromone or more of VA group elements and transition metals. The method is a green preparation method of the 2-alkyl anthraquinone, the separation method can significantly reduce the separation operation difficulty, and the product yield and purity are high; the developed oxidation system is high in activity, the conversion rate is as high as 96.29%, and the selectivity is 98.67%.

A technology for finishing the water-, oil-and dirt repellent polyester fabric includes such steps as preparing the finishing liquid from organofluorine composite nano material dispersed liquid and flexible-type self-crosslinking adhesive, dipping it in the finishing liquid for 0.5-1 min, squeezing, prebaking at 100-110 deg.C for 1-2 min, and baking at 130-180 deg.C for 3-5 min. Its advantages are excellent "three repelling" function, better durability and high washing resistance.

The invention relates to the field of preparation of 2-alkyl anthraquinone, and particularly discloses a method for separating 2-alkyl anthracene from a product containing alkyl anthracene and preparing 2-alkyl anthraquinone by adopting a catalytic oxidation process. The method comprises the following steps: (1) preparing the reaction product containing the alkyl anthracene from anthracene; (2) subjecting the reaction product containing the alkyl anthracene to melt crystallization to separate the anthracene and distillation to separate the 2-alkyl anthracene; (3) under an oxidation condition and in the presence of an oxidation reaction solvent and a catalyst, contacting the 2-alkyl anthracene with an oxidizing agent for an oxidation reaction, wherein the oxidizing agent is hydrogen peroxide, the catalyst contains a carrier and a metal active component loaded on the carrier, and the metal active component is selected from one or more of alkaline earth metals, transition metals and lanthanide metals. According to the method, the separation operation difficulty of the reaction product containing alkyl anthracene can be remarkably reduced, the oxidation system is green and efficient, the conversion rate is as high as 90.12%, and the selectivity is as high as 99.02%.

The invention discloses a bacillus cereus bacterial strain (Bacilluscereuszy-1) and applications thereof. The bacillus cereus bacterial strain (Bacilluscereuszy-1) is preserved in China Center for Type Culture Collection (Wuhan university, Wuhan, China), and preservation number is No.M2014007. Germination inhibition rate of a 2-fold diluent of a fermentation aseptic filtrate of Bacilluscereuszy-1 on botrytis cinerea spores is 95.2%, and inhibition rate of a 10-fold diluent of the fermentation aseptic filtrate of Bacilluscereuszy-1 on mycelia growth is higher than that of a 40% pyrimethanil suspension, so that application prospect of the bacillus cereus bacterial strain (Bacilluscereuszy-1) in agriculture is promising. Technical route of the bacillus cereus bacterial strain (Bacilluscereuszy-1) is reasonable, reliable pilotscale experiment data and design consideration are provided for large-scale industrialized production; and establishment of foundation is provided for development of related biological products and field promotion and application.

The invention discloses Nectria rigidiuscula J12WU and application thereof in preparation of bacterium grain wood, belonging to the technical field of microorganisms. The strain is collected in China General Microbiological Culture Collection Center; the address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing City; and the collection number is CGMCC No:5963. The strain has excellent impregnation capability for a wood-based material, and the impregnation time is short; beautiful colors and grains can be formed on the surface of the material; and the physical mechanical strength is not influenced. A method for preparing a bacterium grain wood by using the strain comprises the steps of strain activation, expanding propagation and inoculation culture; and the method comprises the following specific steps: inoculating the strain on an activation and expanding propagation culture medium for expanding propagation, performing activation and expanding propagation at 22-30 DEG C for 7-15 days, sterilizing the wood-based material, enabling the wood-based material to be sufficiently in contact with the strain subjected to activation and expanding propagation, and culturing at 22-30 DEG C for 1 week or more than 1 week. According to the invention, the method is reasonable in process and simple to operate; and the prepared bacterium grain wood has favorable decoration effect and has no influence on the physical mechanical property of the base material, thereby being beneficial to large-scale production and popularization.

The invention discloses a boracic base core adsorbent and preparing method, which is characterized by the following: adopting glass, quartz or polystyrene inert ball to prepare the absorbent without adsorbing ability, possessing certain thickness for case and high-degree coordination selection adsorbing ability and active porous dielectric structure for carbohydrate with cis-form dihydroxy, nitrating crosslinking polystyrene ball of glass or quartz core through reducing and after-disposing, or nitrating crosslinking polystyrene ball of glass or quartz core incompletely through reducing and after-disposing.

The invention relates to a preparation method of separating and purifying silicon dioxide and cerous chloride from crystal stone wastes, belonging to the field of resource reuse, and is characterized by the following steps: 1) removing impurity: the crystal stone wastes is added with phosphoric acid as an impurity-removing agent and stirred to obtain a mixture of silicon dioxide and cerium oxide;and 2) separation: the mixture is added with concentrated hydrochloric acid as a separation agent, treated by water bath and filtration, the filtrate is evaporated and crystallized to fully precipitate cerous chloride heptahydrate crystals, which is oxidized to obtain cerium oxide crystals; the filter residues are dried at a temperature of <150 DEG C for 1 to 3 hours to obtain silicon dioxide. The preparation method achieves maximum utilization of resources of solid wastes, can transform trash into treasure and obtain phosphate by-products of high economic value and cerous chloride of high purity and high price, and also has advantages of low processing costs, highly pure target composition and significant economic benefits. The purification process follows the idea of clean production, energy saving and reducing emission so as to avoid the problem of environmental pollution.