Method for processing material containing free fatty acid

The invention provides a method for processing a material containing free fatty acids, comprising the following steps of: carrying out contact reaction of the material with C1-C6 monohydric alcohol in a reactor provided with a solid catalyst bed; and collecting products with reduced acid values, wherein a solid catalyst contains beta zeolite, mordenite and aluminum oxide. The method for processing the material containing the free fatty acids has very good deacidifying effect by adopting the solid catalyst containing the beta zeolite, the mordenite and the aluminum oxide and a mode of carryingout the contact reaction of the material with the C1-C6 monohydric alcohol in the reactor, can reduce the acid value of the material with higher acid value, more than 180 mgKOH/g for instance, to less than 2 mgKOH/g only through primary reaction, thereby simplifying the operation and enhancing the production efficiency.

Method for reducing fatty acid value

The present invention provides a method of reducing oil acid value and comprises that the oil with high acid number which is more than 1.0mgKOH/g, C1-C6 monobasic alcohol and metal alkali compound aremixed to be reacted inside a reaction vessel; the oil mixture with reduced acid number is collected, wherein, the reaction temperature is 100 DEG C to 300 DEG C and the pressure is 0.4 to 12MPa. Themethod of the present invention is used for the pretreatment of the oil with high acid number, which can effectively reduced the acid number of the obtained oil mixture; the oil mixture is used as rawmaterial for the transesterification, which can ensure that the acid number of obtained biological diesel oil reaches the requirement of 0.8mgKOH/g oil (America B100 biological diesel oil standard) easily.

Technical method for preparing fatty acid ester

The invention discloses a method for preparing a fatty acid ester, which comprises the following steps: proceeding with ester exchange reaction by providing grease and monohydric alcohol for the reactor; connecting with the reflux condenser at the top of the reactor; connecting with reboiler at the bottom; connecting with setting tank between the reboiler and the last column plate of the reactor in series in order to separate glycerol from the mixture; making the ester phase mixture of the separated glycerol enter the reboiler; separating the crude product from the reboiler; getting the fatty acid ester. The invention reduces the extent of the secondary reaction in the reboiler, which makes the reaction conversion rate and the reaction selective rate reach 100%.

Method of lowering acid value of oil and fat

The present invention provides a method for reducing acid value of oil. Said method includes the following steps: making oil with high acid value and monohydric alcohol with C1-C6 produce reaction in fixed bed reactor under the condition of 170-280 deg.C and 5-12MPa, and collecting oil mixture whose acid value is reduced.

Method for synthesizing dichloropropanol by glycerine

The invention provides a method for synthesizing dichloropropanol by glycerine, which comprises the following steps: the glycerine and organic acid are processed through esterification reaction under the catalysis of solid acid functioning as catalyst to generate organic acid glycerine ester, chlorine hydride is guided to the organic acid glycerine ester for chlorination reaction, and the dichloropropanol as the product of reaction is collected after the chlorination reaction finishes. The method for synthesizing dichloropropanol by glycerine is characterized in that firstly, during the esterification reaction of the glycerine and the organic acid under the catalysis of the solid acid, generated water is removed, thus the dissolution of the chlorine hydride during the esterification reaction is lessened, and the corrosion to equipment is reduced; secondly, high chlorination activity and rapid reaction speed are guaranteed through the esterification reaction, and particularly, the reaction ...

PROCESS FOR PREPARING A BIO-DIESEL

The present invention relates to a process for preparing a bio-diesel, comprising the steps of, in the presence of an additional free fatty acid source, reacting a raw oil-fat with C1-C6 monohydric alcohol in a reactor, and separating fatty acid esters from the reacted materials, so as to produce the bio-diesel, wherein the amount of the free fatty acid in the free fatty acid source ranges from 2-100 wt % and is higher than the amount of the free fatty acid in the raw fat-oil. The present process can increase the fatty acid ester yield and purity of raw oil-fats having a low reaction activity, and has a high adaptability to raw materials.

Printing ink cleaning agent

An ink cleaner consists of fatty acid monoalkyl ester, water, a water soluble nonionic surfactant, an anion active agent and a cosurfactant. The ink cleaner provided by the invention has the advantages of simple preparation, stable latex, strong cleansing power and the like and is especially applicable to cleaning printing ink.

Method for producing acidification oil by using oil footings and/or soapstocks

The invention relates to a method for producing acidification oil by using oil footings and/or soapstocks. The method comprises the step of enabling oil footings and/or soapstocks to be contacted with carbon dioxide and water. Compared with the prior art, the method provided by the invention has the advantages that a CO2 water solution with high concentration is adopted to replace sulphuric acid to perform an acidification reaction of oil footings and/or soapstocks, and the like, a side reaction can not be induced, no sour odor exists in a production field, and the quality of an acidification oil product produced is good; for example, acidification oil produced by the embodiment of the invention is reddish-brown transparent liquid, and the content of a saponated matter is as high as more than 90w%; however, acidification oil produced by a sulphuric acid method of the prior art according to a proportion 1 is a pitchy non-transparent gelatinous matter, and the content of a saponated matter ...

Method for preparing heteropoly acid containing tungsten from tunsten powder

Method for continuously producing epoxy chloropropane

The invention relates to a method for continuously producing epoxy chloropropane, comprising the following steps: leading 3-chloropropene, hydrogen peroxide and solvent in a plurality of fixed bed reactors filled with titanium silicalite catalyst; enabling the 3-chloropropene and the hydrogen peroxide to carry out epoxidation; and stopping epoxidation in at least one fixed bed reactor and regenerating the catalyst therein, wherein when regeneration is carried out in any one of the reactors, at least one reactor in the rest reactors is in epoxidation. The method provided by the invention has the advantages of simplifying the separation process of the catalyst and the reaction products, realizing long-period continuous and stable operation in the production process of epoxy chloropropane, reducing the loss caused by equipment downtime, and having simple technology process and convenient process realization.

Method for separating free glycerin from biodiesel

The invention provides a method for separating free glycerin from biodiesel. The method comprises the following steps: (1) separating monohydroxy alkanol from crude biodiesel; (2) mixing a residue obtained from the step (1) with a low-pole organic solvent, and separating to obtain free glycerin. With the method provided by the invention, biodiesel with qualified free glycerin concentration can beobtained without washing, and without generating waste liquid. With the method, material consumption and energy consumption can be reduced.

Process for preparing aliphatic ester

This invention has provided one kind of technique method to prepare fatty acid ester, including: Provide the grease and monobasic alcohol for the response distillation reactor to do transesterification response, on the reactor, it connects with the reflux condenser, below the reactor, it connects with reboiler, between the reactor column trays, it at least connects with a glycerine settling tank to separate glycerine in the reactive mixture, and make the ester mixture after being separated glycerine to enter the next column tray to continue to respond, then collect the fatty acid ester from raw product in reboiler. This invention makes the transesterification response and the methyl alcohol recycling and the glycerine separation to be coupling, while enhances the conversion rate and selective of transesterification, the recycling energy consumption of methyl alcohol is reduced. According to this invention method, the highest respond conversion rate can reach 100%, the highest fatty acid ...

通过苯环上取代烷基位置重排制备烷基苯的方法

... 本发明涉及烷基苯的制备方法，是在负载或未负载的杂多酸类化合物的催化作用下，使C#-[1]～C#-[10]烷基苯在120～300℃下发生苯环上取代烷基的位置重排反应，分别制得间位烷基苯和均位烷基苯。本发明提供的方法具有以下优点：(1)替换了AlCl#-[3]催化剂，消除了生产过程中的腐蚀和污染，简化了工艺流程；(2)反应温度相对较低，有利于抑制副反应；(3)催化剂的低温活性高、稳定性好，活化方法简便。 ...

Epoxidation reaction system and epoxidation reaction method

The invention relates to the field of olefin epoxidation reaction, and discloses an epoxidation reaction system and an epoxidation reaction method. The system comprises: an epoxidation reactor used for carrying out an epoxidation reaction; the epoxidation reaction feed heat exchange unit is used for heating and/or cooling epoxidation reaction feed; the liquid heat-conducting medium circulating unit is used for controlling the temperature of the epoxidation reaction; the control unit is used for controlling the temperature, the flow rate, the liquid level and the pressure in the epoxidation reaction process; wherein a first temperature control system is arranged in the epoxidation reaction feeding heat exchange unit; and a second temperature control system is arranged in the liquid heat-conducting medium circulating unit. According to the epoxidation reaction system and the epoxidation reaction method provided by the invention, the stable control of the temperature in the epoxidation reaction ...

Preparation method for biodiesel

The invention discloses a preparation method for biodiesel. The method comprises a step of subjecting grease, monohydric alcohol and a grease derivative to a contact reaction, wherein contact reaction conditions comprise that temperature is 100 to 350 DEG C and pressure is 0.1 to 12 MPa, and the grease derivative is one or more selected from the group consisting of foots, soap stock and acid oil. According to the preparation method for biodiesel, pretreatment of acid value reduction on the grease is not needed, process flow of preparation of biodiesel is simplified, and biodiesel yield of raw materials can be substantially increased.

Processing method for high impurity oil

The invention discloses a processing method for oil, and the processing method is as follows: contacting the oil, a processing agent and a solvent in a reactor for reaction, and collecting the reacted processed oil; the processing agent is at least one of a C1-C6 carboxylic acid, a water soluble sulfate and a chloride, the solvent is water and/or alcohol; taking the total weight of the oil as the base, the processing agent dosage is 0.05 to 5 wt.%, and the solvent dosage is 1-100 wt%. The method provided by the invention can reduce the metal content and phosphorus content of raw oil for biodiesel production, and the device stable operation time can be greatly improved when the prepared raw oil is used in biodiesel production.

Method for reducing acid value of bio-oil materials

High-temp chlorination refining process for natural graphite and reaction furnace therefor

Refining method of acidification oil

The invention relates to a refining method of acidification oil. The refining method comprises the following steps: acidification oil contacts with an ultrafiltration membrane, the acidification oil is pressurized to enable saponated substances in the acidification oil to pass, and unsaponifiable substance impurity with the granule diameter greater than 1 micron is interrupted. According to the method provided by the invention, the saponated substances in the acidification oil can pass by enabling the acidification oil to be contacted with the ultrafiltration membrane and pressurizing the acidification oil, an impurity with greater granule diameter can not pass, the quality of the acidification oil can be improved, and the refining method can be directly used for the production of biodiesel; for example, the content of the saponated substances in the acidification oil obtained can be increased to more than 95w%, the moisture content is reduced to less than 1.5w%, and the content of a mechanical ...

Process for preparing biological diesel oil

Production of biological diesel-oil

Method for biodiesel demulsification

The invention discloses a method for biodiesel demulsification, which comprises: mixing emulsified biodiesel and a de-emulsifier to obtain a mixture, and performing oil-water separation of the mixture; the de-emulsifier is water-soluble sulfate and/or C1-C7 organic acid; on a basis of the mass of the emulsified biodiesel, the content of the de-emulsifier is 0.001-10 m%. The emulsion layer of the emulsified biodiesel produced by the method provided in the invention can be demulsified to obtain emulsion layer-free biodiesel.

A chloropropylene oxide continuous extraction method

A chloropropylene oxide continuous extraction method is provided. An extraction system formed by series connection of n extraction devices is adopted for extraction. The n is not less than 2. The method includes: (1) a step of feeding a liquid to be extracted into the extraction system through any one or a plurality of the extraction devices, feeding an extraction agent A from the feeding port of the first extraction device of the extraction system and feeding an extraction agent B from the feeding port of the number n extraction device of the extraction system so that the extraction agents are contacted with the liquid to be extracted, and extracting; and (2) allowing the flow direction of the extraction agent A to be a direction from the first extraction device to the number n extraction device and allowing flow direction of the extraction agent B to be a direction from the number n extraction device to the first extraction device so that extraction raffinate is obtained from the discharging ...

一种负载型杂多酸及其盐的制备方法

... 一种负载型杂多酸的制备方法，包括：1)将选自Mo、W和V的含氧酸盐或氧化物与能水解形成载体的化合物分散在水中，调节H#+[+]浓度为10#+[-5]～5mol/L，搅拌至得到凝胶状物；2)将凝胶状物在100～350℃、0～10atm的条件下静置；3)将步骤2获得的固形物浸没在P、B、Si、As或Ge的含氧酸盐溶液中，调节H#+[+]浓度在0.001～8mol/L之间，或将上述固形物浸没在H#-[3]PO#-[4]中，在60～180℃下放置3～10小时，冷却，洗涤，干燥，即得负载型杂多酸催化剂。采用本发明方法制备的负载型杂多酸及其盐类催化剂，比表面积大，催化效率高，在极性反应体系中不溶脱，反应后分离方便，同时本发明方法解决了传统工艺存在的安全性差及污染问题。 ...

Process for preparing phenol and ketone or alhehyde by catalysis dacomposing aryl alpha-hydroperoxide

Refining method of acidification oil

The invention relates to a refining method of acidification oil. The refining method comprises the following steps: acidification oil contacts with an ultrafiltration membrane, the acidification oil is pressurized to enable saponated substances in the acidification oil to pass, and unsaponifiable substance impurity with the granule diameter greater than 1 micron is interrupted. According to the method provided by the invention, the saponated substances in the acidification oil can pass by enabling the acidification oil to be contacted with the ultrafiltration membrane and pressurizing the acidification oil, an impurity with greater granule diameter can not pass, the quality of the acidification oil can be improved, and the refining method can be directly used for the production of biodiesel; for example, the content of the saponated substances in the acidification oil obtained can be increased to more than 95w%, the moisture content is reduced to less than 1.5w%, and the content of a mechanical ...

Process for preparing a bio-diesel

The present invention relates to a process for preparing a bio-diesel, comprising the steps of, in the presence of an additional free fatty acid source, reacting a raw oil-fat with C1-C6 monohydric alcohol in a reactor, and separating fatty acid esters from the reacted materials, so as to produce the bio-diesel, wherein the amount of the free fatty acid in the free fatty acid source ranges from 2-100 wt % and is higher than the amount of the free fatty acid in the raw fat-oil. The present process can increase the fatty acid ester yield and purity of raw oil-fats having a low reaction activity, and has a high adaptability to raw materials.

Method for preparing fatty acid

Printing ink cleaning agent

An ink cleaner consists of fatty acid monoalkyl ester, water, a water soluble nonionic surfactant, an anion active agent and a cosurfactant. The ink cleaner provided by the invention has the advantages of simple preparation, stable latex, strong cleansing power and the like and is especially applicable to cleaning printing ink.

一种环氧氯丙烷的生产方法

A process for preparing the epoxy chloropropane includes reacting between chloropropene, H2O2, solvent and granular Ti-Si molecular sieve catalyst, filtering, separating to obtain the product, and returning the excessive chloropropene and separated solvent back to reactor. Its advantages are simple process, easy control of reaction temp, high utilization of H2O2, and less energy consumption.

Method for removing petroleum acid in hydrocarbon oils

The invention relates to a method for removing the petroleum acid in the hydrocarbon oil, which comprise the step that alcohol contacts with the petroleum acid in the hydrocarbon oil for esterification reaction. The method is characterized in that the reaction is performed under the ultrasonication, and the ratio of the power of the supersonic wave to the weight of the hydrocarbon oil is 0.05 to 20 W/g. The method has the advantages of high acid stripping efficiency and short reaction time.

Application method of crude glycerine

The invention relates to a method for applying the crude glycerine. The method comprises the steps that the crude glycerine contacts with the hydrocarbon oil containing petroleum acid to have esterification reaction at 200 to 300 DEG C, the mol ratio of the glycerine to the petroleum acid is 1 to 20:1, and the contacting time is 1 to 120 min. The method has the advantages of low reaction temperature and short reaction time, and develops a novel approach for applying the crude glycerine.

Production method of epoxy chloropropane

The invention relates to a production method of epoxy chloropropane. The method provided in the invention comprises contacting 3-chloropropene with hydrogen peroxide with existence of titanium silicalite molecular sieve catalyst, alkaline additive and solvent, wherein, the temperature of contact between 3-chloropropene and hydrogen peroxide is raised from 10-55 DEG C to 65-100 DEG C, and the temperature raising velocity is 0.02-1 DEG C/h. Compared with the prior art, the method for producing epoxy chloropropane provided in the invention greatly enhances activity stability of catalyst, obviously reduces use cost and operation expenditure of catalyst; the technique process is simple and the implementation is convenient.

Method for producing triacetin

The invention provides a method for preparing acetin. The method comprises that: in the presence of alkali catalyst, grease reacts with acetate, and acetin and fatty acid ester are collected. The method has the advantages of: (1), producing the acetin directly by using the grease and the acetate, generating little side reaction, achieving high product quality and widely used by products; 2, avoiding using acetic acid and acid catalyst, solving the problem of serious corrosion existing in the conventional process and lowering requirements on equipment material and operation and maintenance costs; and 3, enlarging the application range of methyl acetate.

Process for the separation of epoxychloropropane

A method for separating epoxy chloropropane comprises the steps of: mixing a solution containing epoxy chloropropane, methanol, 3-chloropropene and water and an extraction agent, separating to obtain a liquid phase rich in epoxy chloropropane and a liquid phase rich in methanol, distilling to obtain the liquid phase rich in epoxy chloropropane, and collecting epoxy chloropropane, wherein the extraction agent comprises an extraction agent A and an extraction agent B that are not soluble with each other, the methanol extraction ability of the extraction agent A is higher than that of the extraction agent B, the epoxy chloropropane extraction ability of the extraction agent B is higher than that of the extraction agent A, and the boiling points of the extraction agents A and B are different. The inventive separation method has the advantages of remarkably reduced energy consumption and remarkably improved epoxy chloropropane yield.

Preparation method of biological diesel fuel

The present invention provides a preparation method of biological diesel oil and comprises that grease is reacted with C1-C6 monohydric alcohol inside a reactor while alkali metal compound exists, and fatty acid ester is separated from material after the reaction to obtain the biological diesel oil, wherein, the existing quantity of the alkali metal compound is 0.001 to 0.007wt percent which is counted by metal and is corresponding to the weight of the grease; the temperature inside the reactor is 100 DEG C to 280 DEG C and the pressure is 1MPa to 8MPa. The method provided by the present invention has the large disposal quantity of raw material and the high yield of the biological diesel oil.

Fuel oil additive composition, preparation and use thereof

The invention relates to a fuel oil additive compound and a preparation method taking animal and vegetable grease as raw materials and an application thereof. In particular, the fuel oil additive compound of the invention consists of the following components based on the weight percent: the fatty acid monoalkyl ester of 50 to 80 percent, the monoglyceride of 5 to 30 percent, the diglyceride of 2 to 15 percent, the triglyceride of 0 to 7 percent, the fatty acid amide of 0 to 20 percent and the free glycerin of 0.01 to 1 percent.

Method for reducing acid value of bio-oil materials

The invention relates to a method for reducing the acid value of bio-oil materials, which comprises the following steps of evenly mixing bio-oil materials and alcohol amine compound, standing, layering, separating and collecting the bio-oil materials with reduced acid value. The bio-oil materials can be natural oil or products of ester exchange reaction of the oil. The method has high acid value reduction effect without generating a great deal of waste water, is convenient for environment protection, can effectively remove peculiar smell in biodiesel and has decoloration effect.

Utilization method of crude glycerine

The invention relates to a method for utilizing the crude glycerine. The method comprises the steps that the crude glycerine, hydrocarbon oil containing petroleum acid contact with esterification reaction catalyzer to have the esterification reaction at 200 to 300 DEG C, the mol ratio of the glycerine to the petroleum acid is 1 to 20:1, the contacting time is 1 to 120 min, and the esterification reaction catalyzer can be one or more than one of alkali-earth oxide, magnesia alumina spinel, alkali-earth oxide loading base metal inorganic salt, and magnesia alumina spinel loading base metal inorganic salt. The method has the advantages of low reaction temperature and short reaction time, and develops a novel approach for utilizing the crude glycerine.

Titanium silicon molecular sieve catalyst as well as preparation method and use thereof

The invention relates to a titanium silicate molecular sieve catalyst and the preparation method and the application thereof. The catalyst comprises 25-65 percent of titanium silicate molecular sieve and 20-65 percent of nanometer alumina. The mechanical strength is 20-30N/cm<2>. Prepared by an extruded moulding method, the catalyst has the characteristics of high mechanical strength, high catalytic activity and selectivity, and the like, and is especially applied to catalyzing 3-chloropropene oxidation reaction to prepare epichlorohydrin.

Process for preparing organic pillared interlayer clay with high stabilization

The invention provides a method for preparing organic column clay material with high stability, which comprises the following steps: (1) providing the clay slurry with the diameter of granule less than 2 micrometer and the content of solid not more than 10%; (2) adding the reagent containing the surface-active agents with cationic fluorinion and carbon into the said clay slurry in step (1), stirring for the hydrothermal synthesis reaction at the temperature 50-250 DEG C, separating, purifying, drying after the reaction completely finished and getting the said clay material, the consumption of the said surface-active agents is 1-10% of the clay slurry in mass. The invention takes the advantage of the chemical stability and heat endurance of the surface-active agents as well as that of hydrothermal synthesis reaction, and as a result, the material can be used in larger range of pH value and temperature and can be more extensively used as catalyst, absorbent, aids for daily-use industrial ...

Method of preparing fatty acid ester

Process for preparing phenol and ketone or alhehyde by catalysis decomposing aryl alpha-hydroperoxide

The preparation method of phenol and ketone or aldehyde by means of catalytic decomposition of aryl alpha-hydrogen peroxide includes such process of that under the conditions of reaction temp. of 20-150 deg.C and reaction pressure of normal pressure-70 megapascals, the raw material containing aryl apha-hydrogen peroxide is contacted with a heteropolyacid monacid salt catalyst whose anhydrous chemical expression is MnHk-mnXZ12O40, in which M is selected from alkali metal, alkali earth metal or ammonium ion; H represents hydrogen ion; X is selected from phosphorus, silicon, germanium or arsenicatom; Z is one or two kinds selected from tungsten, molybdenum and vanadium atoms; m is valence state of M ion; K is 3 or 4; n is greater than 0 and less than 4, and K--mn is not equal to 0.

Surface phosphorus-doped high-nickel ternary material, preparation method thereof and lithium ion battery containing surface phosphorus-doped high-nickel ternary material

The invention relates to a surface-phosphorus-doped high-nickel ternary material, a preparation method thereof and a lithium ion battery comprising the same, the surface-phosphorus-doped high-nickel ternary material comprises particles with the chemical formula of LiqNixCoyMnzOpPm, x + y + z = 1, 0.6 < = x < = 0.9, 0.05 < = y < = 0.2, 0.05 < = z < = 0.2, 0.8 < = q < = 1.2, 1.8 < = p < = 2.2, 0 < m < = 0.1, and phosphorus is doped on the surface of the material. The high-nickel ternary material with the surface doped with phosphorus, which is prepared by adopting the method disclosed by the invention, has a stable layered structure, and phosphorus element doping on the surface can play a coating effect to slow down corrosion of electrolyte to the material, so that the electrochemical cycle stability of the material is effectively improved.

PROCESS FOR PREPARING A BIO-DIESEL

The present invention provides a process for preparing a bio-diesel, comprising, in the presence of an alkaline metal compound, reacting an oil-fat with C1-C6 monohydric alcohol in a reactor at a reaction temperature of from 130 to 280° C. and a reaction pressure of from 1 to 12 MPa, separating fatty acid esters from the reacted materials, so as to produce the bio-diesel, wherein said alkaline metal compound is present in an amount of 0.001-0.07 wt %, in terms of the metal thereof, relative to the weight of the oil-fat. The process provided in the present invention has the advantages of great throughput and high yield of the bio-diesel.

Method for preparing tetrahydrofuran by utilizing dehydration and cyclization of 1,4-butanediol

Method for processing material containing free fatty acid

The invention provides a method for processing a material containing free fatty acids, comprising the following steps of: carrying out contact reaction of the material with C1-C6 monohydric alcohol in a reactor provided with a solid catalyst bed; and collecting products with reduced acid values, wherein a solid catalyst contains beta zeolite, mordenite and aluminum oxide. The method for processing the material containing the free fatty acids has very good deacidifying effect by adopting the solid catalyst containing the beta zeolite, the mordenite and the aluminum oxide and a mode of carrying out the contact reaction of the material with the C1-C6 monohydric alcohol in the reactor, can reduce the acid value of the material with higher acid value, more than 180 mgKOH/g for instance, to less than 2 mgKOH/g only through primary reaction, thereby simplifying the operation and enhancing the production efficiency.

Method for preparing dichloropropanol by glycerin chlorination

The invention relates to a method for preparing dichloropropanol by glycerin chlorination, comprising the following steps: guiding chlorine hydride to the glycerin for reaction under the catalysis of naphthenic acid functioning as catalyst, and collecting the dichloropropanol as the product of the reaction after the reaction is finished. Compared with the prior method for preparing dichloropropanol, the method for preparing the dichloropropanol by glycerin chlorination has the advantages that the catalyst can be reutilized, has high activity and good selectivity and less byproducts of reactionare generated.

Method for continuous extraction of epichlorohydrin

The invention provides a method for continuous extraction of epichlorohydrin. The method includes: mixing a to-be-extracted solution with a first extractant, and removing non-condensable gas from the obtained mixture so as to obtain a mixture flow containing the to-be-extracted solution and the first extractant, with the first extractant being water; making a second extractant flow from top to bottom in an extraction tower to undergo countercurrent contact with an upward flowing light liquid phase that enters the extraction tower from the lower end and is separated from the mixture flow containing the to-be-extracted solution and the first extractant, thus obtaining a methanol-rich raffinate from the extraction tower top, combining the second extractant with a downward flowing heavy liquid phase separated from the mixture flow containing the to-be-extracted solution and the first extractant at the lower end of the extraction tower so as to obtain an epichlorohydrin-rich extract phase at ...

Chemical processing method for lipin

The invention provides a chemical machining method for grease, which comprises the following steps: the grease reacts with micromolecular organic acid ester in the presence of alkali-bearing catalyst or alkali-free catalyst, and fatty acid alkyl ester and micromolecular glyceride are collected. Compared with the prior art, the chemical machining method for the grease has the advantages that: firstly, the mutual solubility of the micromolecular organic acid ester and the grease is good, so that the chemical machining method solves the problems of large mass transfer resistance and low reaction efficiency due to poor mutual solubility of alcohol and the grease in the prior art; and secondly, glycerol is converted into the micromolecular glyceride, so that the chemical machining method has wide application scope and overcomes the defects of large recovery difficulty of the glycerol, high energy consumption and poor recovery effect in the prior art.

Process for preparing phenol and ketone or aldehyde by catalysis decomposing aryl alpha-hydroperoxide

High-temp chlorination refining process for natural graphite

The process for purifying natural graphite features that under the action of catalyst and reducer chlorine and graphite material are subjected to high-temp. chlorination reaction in reactor and during the reaction its impurities may be recovered in the form of their chlorides as by-products. Its advantages include high purity of purified graphit with carbon content of 98-99.9%, low cost and less energy consumption.

Method for preparing 1,3-propylene glycol

A process for preparing 1,3-propanediol from formaldehyde and acetaldehyde includes such steps as under existance of alkali and organic solvent, reacting at 10-40 deg.C for 2-10 hr to obtain 3-hydroxypropanol, making the 3-hydroxypropanal in contact with catalyst, and hydrogenation reaction at 50-100 deg.c and 3-9 MPa. The said catalyst contains Ni (70-90 wt.%), Fe or Mo (0-9), P (1-5) and Al (rest). Its advantages are high output rate, high safety, and high activity and selectivity of said catalyst.

Esterification method of aliphatic acid

Method for preparing tetrahydrofuran by utilizing dehydration and cyclization of 1,4-butanediol

A preparation method of tetrahydrofuran by adopting dehydration cyclization of 1,4-butanediol is characterized by making the catalyst containing heteropolyacid contact with 1,4-butanediol at 130-250 deg.C to make reaction. By adopting the catalyst containing heteropolyacid, the said invented method can obviously raise the treatment quantity of 1,4-butanediol, and each gram of heteropolyacid can treat 1000-2000 grams of 1,4-butanediol per hr.

Fuel oil additive composition, preparation and use thereof

The invention relates to a fuel oil additive compound and a preparation method taking animal and vegetable grease as raw materials and an application thereof. In particular, the fuel oil additive compound of the invention consists of the following components based on the weight percent: the fatty acid monoalkyl ester of 50 to 80 percent, the monoglyceride of 5 to 30 percent, the diglyceride of 2 to 15 percent, the triglyceride of 0 to 7 percent, the fatty acid amide of 0 to 20 percent and the free glycerin of 0.01 to 1 percent.

Technical method for preparing fatty acid ester

The invention discloses a method for preparing a fatty acid ester, which comprises the following steps: proceeding with ester exchange reaction by providing grease and monohydric alcohol for the reactor; connecting with the reflux condenser at the top of the reactor; connecting with reboiler at the bottom; connecting with setting tank between the reboiler and the last column plate of the reactor in series in order to separate glycerol from the mixture; making the ester phase mixture of the separated glycerol enter the reboiler; separating the crude product from the reboiler; getting the fattyacid ester. The invention reduces the extent of the secondary reaction in the reboiler, which makes the reaction conversion rate and the reaction selective rate reach 100%.

Titanium silicon molecular sieve catalyst as well as preparation method and use thereof

The invention relates to a titanium silicate molecular sieve catalyst and the preparation method and the application thereof. The catalyst comprises 25-65 percent of titanium silicate molecular sieve and 20-65 percent of nanometer alumina. The mechanical strength is 20-30N/cm<2>. Prepared by an extruded moulding method, the catalyst has the characteristics of high mechanical strength, high catalytic activity and selectivity, and the like, and is especially applied to catalyzing 3-chloropropene oxidation reaction to prepare epichlorohydrin.

Methods for odor removal of biodiesel

The invention provides two methods for odor removal of biodiesel. The two methods are simple and effective, and are convenient to operate. The first method for odor removal of the biodiesel comprises the steps of adding water into the biodiesel containing odor, and removing the water after the water is fully mixed with the biodiesel to obtain odorless biodiesel. The second method for odor removal of the biodiesel comprises the step of injecting water to the bottom of the biodiesel of which the temperature is more than or equal to 100 DEG C, wherein the water is in full contact with the biodiesel during vaporization and takes away substances containing odor in the biodiesel.

Iridium and iridium oxide composite catalyst as well as preparation method and application thereof

The invention provides an iridium and iridium oxide composite catalyst as well as a preparation method and application thereof. In an XRD spectrogram of the catalyst, a characteristic peak of elemental iridium exists, and a characteristic peak of iridium dioxide does not exist. According to the preparation method, a sodium borohydride reducing agent and a surfactant can be prevented from being used, solid waste and NOx waste gas are not generated, and the atom utilization rate of iridium metal is high. The catalyst has the characteristics of low overpotential, high activity and good stability when being used as an anode catalyst for hydrogen production by water electrolysis of a proton exchange membrane.

Method for utilizing waste water containing formic acid

The invention provides a method for utilizing waste water containing formic acid. The method comprises the following steps: carrying out reduced pressure distillation on the waste water containing formic acid so as to obtain gas mixture containing formic acid steam and water steam, wherein the waste water containing formic acid contains formic acid, water and grease substance; enabling the gas mixture containing formic acid steam and water steam to be directly contacted with slurry containing calcium carbonate. According to the method provided by the invention, the reduced pressure distillation is carried out on the waste water containing formic acid so as to obtain the gas mixture containing formic acid steam and water steam, and then the gas mixture containing formic acid steam and water steam is directly contacted with the slurry containing calcium carbonate, so that the method provided by the invention can efficiently recycle formic acid from the waste water containing the formic acid ...

Process for preparing phenol and ketone or aldehyde by catalysis decomposing aryl alpha-hydroperoxide

The preparation method of phenol and ketone or aldehyde by means of catalytic decomposition of aryl alpha-hydrogen peroxide includes such process of that under the conditions of 20-150 deg.C and normal pressure-70 megapascals, the raw material containing aryl alpha-hydrogen peroxide is contacted with a porous carrier material, on which one or more than one kind of heteropolyacid monacid salt catalysts with anhydrous chemical expression of MnHk-mn X Z12O40, in which M is selected from alkali metal, alkali earth metal or ammonium ion; H represents hydrogen ion; X is selected from phosphorus, silicon, germanium or arsenic atom; Z is one or two kinds selected from tungsten, molybdenum and vanadium atoms; m is valence state of M ion; K is 3 or 4; in n is greater than 0 and less than 4, and K-mn is not equal to 0, are carried.

Method for preparing alkylbenzene by position rearrangement reaction of substituted alkyl on benzene ring

The present invention relates to a preparation method of alkylenzene, and is characterized by the under the catalytic action of loaded or unloade heteropolyacid compound it makes C1-C10 alkylbenzenesproduce position rearragement reaction of substituting alkyl on benzene ring at 120-300 deg.c to respectively obtain meta-alkylbenzene and homo-alkylbenzene. Said invention method possesses the following advantages: 1. it substitutes AlCl3 catalyst, eliminates the corrosion and pollution produced in the course of production can simplifies technological process; and 2. its reaction temp. is lower,it is favorable for inhibiting side reaction, and 3. the low-temp. activity of catalyst is high, its stability is good and its activation method is simple and convenient.

Method for reducing oilseed acid value

Method for removing petroleum acid in hydrocarbon oils

The invention relates to a method for removing the petroleum acid in the hydrocarbon oil, which comprise the step that alcohol contacts with the petroleum acid in the hydrocarbon oil for esterification reaction. The method is characterized in that the reaction is performed under the ultrasonication, and the ratio of the power of the supersonic wave to the weight of the hydrocarbon oil is 0.05 to 20 W/g. The method has the advantages of high acid stripping efficiency and short reaction time.

Method for preparing fatty acid ester

Extraction method for epoxy chloro-propane

The invention provides an extraction method for epoxy chloro-propane. The method comprises the following steps: a solution containing epoxy chloro-propane, methanol, 3-chloropropylene and water is continuously extracted in two extracting tower, wherein in the first extracting tower, 3-chloropropylene flows from the top down to be in countercurrent contact with a material flow, which contains the solution containing epoxy chloro-propane, methanol, 3-chloropropylene and water as well as water serving as an extracting agent, so as to obtain an extract phase rich in epoxy chloro-propane, and the weight ratio of water serving as an extracting agent to 3-chloropropylene is 1:(0.5-2); in the second extracting tower, the extract phase rich in epoxy chloro-propane flows from the bottom up to be in countercurrent contact with water so as to obtain a raffinate phase rich in epoxy chloro-propane and 3-chloropropylene. The raffinate phase rich in epoxy chloro-propane, obtained according the method provided ...

Method for preparing load typed heteropoly acid and its salt

A carried heteropoly acid or its salt as catalyst is prepared through dispersing the oxygen-contained acid's salt or oxide of Mo, W, or V and carrier compound in water, regulaitng H concentration, stirring to obtain gel substance, laying aside at 100-350 de.gc, immersing the solid substance in the salt solution of P, B, Si, As, or Ge or H3PO4 at 60-180 deg.C for 3-10 hr, cooling, washing and drying. Its advantages are large specific area and high catalyzing efficiency.

Method for removing impurities from biodiesel

The invention discloses a method for removing impurities from biodiesel. The method is characterized in that biodiesel contacts with an adsorbent composition, the adsorbent composition contains wood chips and a molecular sieve, and a weight ratio of the wood chips to the molecular sieve is 1:0.04-6. The method can realize the removal of glycerin impurities in the biodiesel by using the adsorbent composition containing the wood chips.

Coated ternary positive electrode material as well as preparation method and application thereof

The invention relates to the field of lithium ion batteries, and discloses a coated ternary positive electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) carrying out solid-phase mixing on a ternary positive electrode material and magnesium-aluminum hydrotalcite; and (2) roasting the mixture obtained in the step (1) to obtain the ternary positive electrode material coated with the MgO-Al2O3 composite oxide. The preparation method can effectively improve the cycling stability and safety performance of the ternary positive electrode material, and has the advantages of simple process, low cost and easiness in industrial production.

Method for producing epichlorohydrin

The invention provides a method for producing epichlorohydrin. The method comprises an epoxidation reaction process and an extraction process, wherein the extraction process comprises the step of continuously extracting an epoxidation reaction mixture obtained by the epoxidation reaction process in two extracting towers, wherein in the first extracting tower, a mixture flow of the epoxidation reaction mixture and water is contacted with 3-allyl chloride reverse flow which flows from top to bottom to obtain an epichlorohydrin-containing extract phase, and the water and the 3-allyl chloride are in the weight ratio of 1:(0.5-2); in the second extracting tower, the epichlorohydrin-containing extract phase is contacted with a water reverse flow flowing from top to bottom to obtain a raffinate phase containing the epichlorohydrin and the 3-allyl chloride. The epichlorohydrin-rich raffinate phase obtained by the method disclosed by the invention does not contain or basically does not contain a ...

Chemical processing method for lipid

The invention provides a chemical machining method for grease, which comprises the following steps: the grease reacts with micromolecular organic acid ester in the presence of alkali-bearing catalyst or alkali-free catalyst, and fatty acid alkyl ester and micromolecular glyceride are collected. Compared with the prior art, the chemical machining method for the grease has the advantages that: firstly, the mutual solubility of the micromolecular organic acid ester and the grease is good, so that the chemical machining method solves the problems of large mass transfer resistance and low reactionefficiency due to poor mutual solubility of alcohol and the grease in the prior art; and secondly, glycerol is converted into the micromolecular glyceride, so that the chemical machining method has wide application scope and overcomes the defects of large recovery difficulty of the glycerol, high energy consumption and poor recovery effect in the prior art.

烷基苯的制备方法

A process for preparing alkylbenzene features that the raw materials including fresh benzene or toluene, fresh olefine, and circulated benzene or toluene pass sequentially through the alkylation segment, transition segment and alkyl transfer segment of the circulating reactor. Properly controlling the acidity of catalyst can integrate the alkylating reaction and alkyl transferring reaction in a single reactor. Its advantages are simple process and high selectivity of product.

一种烯烃直接环氧化的催化蒸馏方法

A catalytic distiling process for directly epoxidating olefine features that a tower which is vertically and sequentially divided into distilling segment, reaction segment and desorption segment is only used, and includes reacting between olefine, hydrogen peroxide, solvent and Ti-Si molecular sieve catalyst, condensing the excessive solvent and olefine and returning them back to reaction segment, and separating product from the substance discharged from tower bottom. Its advantages are high thermal efficiency and less energy consumption.

Process for the separation of epoxychloropropane

A method for separating epoxy chloropropane comprises the steps of: mixing a solution containing epoxy chloropropane, methanol, 3-chloropropene and water and an extraction agent, separating to obtain a liquid phase rich in epoxy chloropropane and a liquid phase rich in methanol, distilling to obtain the liquid phase rich in epoxy chloropropane, and collecting epoxy chloropropane, wherein the extraction agent comprises an extraction agent A and an extraction agent B that are not soluble with each other, the methanol extraction ability of the extraction agent A is higher than that of the extraction agent B, the epoxy chloropropane extraction ability of the extraction agent B is higher than that of the extraction agent A, and the boiling points of the extraction agents A and B are different.The inventive separation method has the advantages of remarkably reduced energy consumption and remarkably improved epoxy chloropropane yield.

Preparation method of biodiesel

The invention provides a preparation method of biodiesel, comprising the following steps of: (1) undergoing a contact reaction of oil and monohydric alcohol in the presence of a base catalyst to ensure that the conversion rate of the oil is up to 80-95 percent by weight; (2) separating a glycerol phase and a light oil phase from a product obtained in the step (1); (3) contacting the light oil phase obtained in the step (2) with the monohydric alcohol and the base catalyst in the presence of the base catalyst in the presence of the base catalyst to ensure that the conversion rate of the oil is up to over 98 percent by weight; and (4) separating the contacted product obtained in the step (3) to obtain the biodiesel and the monohydric alcohol, and recycling the obtained monohydric alcohol. The method provided by the invention has the advantages of increasing the balance conversion rate of the oil, reducing the contents of triglyceride and diglyceride in the product and ensuring that the contents ...

Method for preparing biodesel

The invention relates to a preparation method for biological diesel oil, which comprises that: grease and alcohol are provided to a reactor for the transesterification; the biological oil and glycerol are separated and collected. The reaction temperature is 100-260 DEG C, and the reaction pressure is 0.2-7MPa. According to the method provided by the invention, the product yield can reach to more than 80w percent. The method of the invention is especially applied to the processing of unrefined oil with high acid value. Pretreatment process with complex procedures can be avoided, and the energy consumption and the equipment investment can be lowered. Without the three wastes, the method of the invention is an environmental friendly green process.

Preparation method of biological diesel fuel

The present invention relates to a preparation method of biological diesel oil and comprises that raw material grease is reacted with C1-C6 monohydric alcohol inside a reactor while additional dissociative fatty acid source exists, and fatty acid ester is separated from material after the reaction to obtain the biological diesel oil. The dissociative fatty acid content in the dissociative fatty acid source is 2 to 100wt percent and is higher than the dissociative fatty acid content in the raw material grease. The method of the present invention can improve the biological diesel oil yield and purity of the raw material grease with low reaction activity, and the raw material applicability is strong.

Method of preparing organism diesel oil from mixing plant oil

1,3-丙二醇的制备方法

... 一种1，3-丙二醇的制备方法，包括：(1)将甲醛、乙醛在碱和有机溶剂的存在下，在10～40℃反应2～10小时，生成3-羟基丙醛；(2)将3-羟基丙醛与合金催化剂接触，在50～100℃，3～9MPa的条件下进行加氢反应，所说催化剂组成为：镍70～90重％，铁或钼0～9重％，磷1～5重％，余量为铝。本发明方法具有原料价格低、安全性好，反应条件缓和的特点，采用的合金催化剂活性高、选择性高，使1，3-丙二醇的收率可达90mol％，且催化剂可重复使用，降低了生产成本，同时也不会产生Al(OH)#-[3]等无机副产物。 ...

Process for preparation of monoalkyl benzene

Method for reducing fatty acid value

The present invention provides a method of reducing oil acid value and comprises that the oil with high acid number which is more than 1.0mgKOH/g, C1-C6 monobasic alcohol and metal alkali compound are mixed to be reacted inside a reaction vessel; the oil mixture with reduced acid number is collected, wherein, the reaction temperature is 100 DEG C to 300 DEG C and the pressure is 0.4 to 12MPa. The method of the present invention is used for the pretreatment of the oil with high acid number, which can effectively reduced the acid number of the obtained oil mixture; the oil mixture is used as raw material for the transesterification, which can ensure that the acid number of obtained biological diesel oil reaches the requirement of 0.8mgKOH/g oil (America B100 biological diesel oil standard) easily.

Method for synthesizing dichloropropanol by glycerine

The invention provides a method for synthesizing dichloropropanol by glycerine, which comprises the following steps: the glycerine and organic acid are processed through esterification reaction under the catalysis of solid acid functioning as catalyst to generate organic acid glycerine ester, chlorine hydride is guided to the organic acid glycerine ester for chlorination reaction, and the dichloropropanol as the product of reaction is collected after the chlorination reaction finishes. The method for synthesizing dichloropropanol by glycerine is characterized in that firstly, during the esterification reaction of the glycerine and the organic acid under the catalysis of the solid acid, generated water is removed, thus the dissolution of the chlorine hydride during the esterification reaction is lessened, and the corrosion to equipment is reduced; secondly, high chlorination activity and rapid reaction speed are guaranteed through the esterification reaction, and particularly, the reaction ...

Method for demulsifying emulsified biodiesel

The invention provides a method for demulsifying emulsified biodiesel. The method comprises the following steps: adding a single or mixed alcohol demulsification agent into emulsified biodiesel, performing centrifugal separation after the single or mixed alcohol demulsifier sufficiently contacts with the emulsified biodiesel, thereby obtaining clear biodiesel phase and water phase, further separating the biodiesel phase from the water phase, and finally recycling alcohol in one of the two following ways: (1) washing the biodiesel phase with water for 1-3 times, separating the phase, heating the water phase, and recycling the alcohol demulsifier to be circulated and reused; (2) heating the biodiesel phase, and recycling the alcohol demulsifier to be circulated and reused. The method provided by the invention has the advantages that a good demulsification effect on the emulsified biodiesel is achieved, most demulsifier can be recycled and reused, the property of the emulsified biodiesel is ...

Method for preparing positive electrode material and positive electrode material

The invention relates to a method for preparing a positive electrode material and the positive electrode material, and the method comprises the following steps: mixing a manganese-containing precursor with a lithium source, and calcining in an oxygen-containing atmosphere to obtain a layered lithium-rich manganese-based positive electrode material matrix; carrying out washing treatment on the layered lithium-rich manganese-based positive electrode material substrate to obtain a washed layered lithium-rich manganese-based positive electrode material substrate; and mixing the washed layered lithium-rich manganese-based positive electrode material matrix with an aluminum source, and carrying out secondary calcination in an oxygen-containing atmosphere to obtain the positive electrode material. According to the method, by adopting a step-by-step calcination process, a large amount of aluminum element can be uniformly introduced into an internal crystal structure of the layered lithium-rich ...

Method for reducing oilseed acid value

The invention provides a method for reducing the acid value of oil materials, which comprises: reacting the oil materials of which the acid value is to be reduced and C1-C6 monobasic alcohol in a reactor, and collecting oil materials of which the acid value is reduced, wherein the temperature in the reactor is between 100 and 330 DEG C, and the pressure in the reactor is between 0.1 and less than 5 MPa. The method not only can effectively reduce the acid value of the oil materials but also can make the reaction continuously performed, does not generate waste acid, basically does not generate wastewater, and is favorable for environmental protection and subsequent processing.

Method for reduction of acid value of biodiesel

The invention provides a method for reduction of the acid value of biodiesel, which comprises: adding ammonia and polyol with the carbon number being 2-10 into products produced in ester interchange reaction of grease with free fatty acid, mixing, laying statically for lamination, collecting mixed ester phase with fatty mono-alkyl ester in the upper layer, and collecting biodiesel with a low acidvalue. The method provided in the invention can be used for reduction of the acid value of the products generated in the ester interchange reaction of the grease with free fatty acid, the acid value of the prepared biodiesel can satisfy requirements in the national standard, no higher than 0.8mgKOH/g, and even can be reduced to be 0.1-0.3mgKOH/g. The method not only has the advantages of high efficiency in reduction of the acid value and low cost, but also can not generate a large amount of waste water or waste residue, thereby facilitating the environmental protection. Moreover, the method can ...

Method for preparing delta-cyclovalerolactone

The invention discloses a method for preparing delta-cyclovalerolactone, which comprises the following steps: in the presence of a hydrogenation catalyst, reacting furoic acid or a furoate derivative with hydrogen and alcohol to obtain a solution of an intermediate product, heating and distilling the solution of the intermediate product, removing the alcohol, and carrying out molecular lactone exchange reaction on the intermediate product to obtain the delta-cyclovalerolactone, wherein the hydrogenation catalyst is a supported metal catalyst. The method disclosed by the invention is green and environment-friendly, low in reaction temperature, low in energy consumption and high in yield of delta-cyclovalerolactone.

Process for preparing a bio-diesel

The present invention provides a process for preparing a bio-diesel, comprising, in the presence of an alkaline metal compound, reacting an oil-fat with C 1 -C 6 monohydric alcohol in a reactor at a reaction temperature of from 130 to 280° C. and a reaction pressure of from 1 to 12 MPa, separating fatty acid esters from the reacted materials, so as to produce the bio-diesel, wherein said alkaline metal compound is present in an amount of 0.001-0.07 wt %, in terms of the metal thereof, relative to the weight of the oil-fat. The process provided in the present invention has the advantages of great throughput and high yield of the bio-diesel.

Method of reducing olefine and benzene content in gasoline

A process for decreasing the content of olefin and benzene in gasoline includes such steps as contacting raw gasoline with heteropoly compound MmHa-bmXY12O40nH2O, reacting at 50-250 deg.C and collecting the reaction resultant.

Method for continuously producing epoxy chloropropane

The invention relates to a method for continuously producing epoxy chloropropane, comprising the following steps: leading 3-chloropropene, hydrogen peroxide and solvent in a plurality of fixed bed reactors filled with titanium silicalite catalyst; enabling the 3-chloropropene and the hydrogen peroxide to carry out epoxidation; and stopping epoxidation in at least one fixed bed reactor and regenerating the catalyst therein, wherein when regeneration is carried out in any one of the reactors, at least one reactor in the rest reactors is in epoxidation. The method provided by the invention has the advantages of simplifying the separation process of the catalyst and the reaction products, realizing long-period continuous and stable operation in the production process of epoxy chloropropane, reducing the loss caused by equipment downtime, and having simple technology process and convenient process realization.

Production method of epoxy chloropropane

The invention relates to a production method of epoxy chloropropane. The method provided in the invention comprises contacting 3-chloropropene with hydrogen peroxide with existence of titanium silicalite molecular sieve catalyst, alkaline additive and solvent, wherein, the temperature of contact between 3-chloropropene and hydrogen peroxide is raised from 10-55 DEG C to 65-100 DEG C, and the temperature raising velocity is 0.02-1 DEG C/h. Compared with the prior art, the method for producing epoxy chloropropane provided in the invention greatly enhances activity stability of catalyst, obviously reduces use cost and operation expenditure of catalyst; the technique process is simple and the implementation is convenient.

Method for continuously producing 5-hydroxymethylfurfural and 2, 5-furandicarboxylic acid

The invention relates to a method for continuously producing 5-hydroxymethylfurfural and 2, 5-furandicarboxylic acid. According to the method, starting from the fructose-based carbohydrate, the important biomass-based platform compound 5-hydroxymethylfurfural and the functional high polymer material monomer 2, 5-furandicarboxylic acid are continuously produced, the separation and purification process of the 5-hydroxymethylfurfural is avoided in the production process of the 2, 5-furandicarboxylic acid, and the method has the advantages of being simple in process, low in generation and emission of three wastes, high in yield and the like. And the method is environment-friendly.

Niobium-phosphorus co-doped nickel-cobalt-manganese lithium aluminate quaternary material, preparation method thereof and lithium ion battery containing niobium-phosphorus co-doped nickel-cobalt-manganese lithium aluminate quaternary material

The invention relates to a niobium-phosphorus co-doped nickel-cobalt-manganese lithium aluminate quaternary material, a preparation method thereof and a lithium ion battery comprising the same. The niobium-phosphorus co-doped nickel-cobalt-manganese lithium aluminate quaternary material comprises particles with a chemical formula of LiNixCoyMnzAlwNbnPmO2, x + y + z + w + n + m = 1, 0 < y < = 0.2, 0 < z < = 0.1, 0 < w < = 0.05, 0.002 < n < = 0.02, and 0.001 < m < = 0.02, the ratio of the ANb to the DNb is 0.9 to 1.1, and the ratio of the AP to the DP is 5 to 15. In the niobium-phosphorus co-doped nickel cobalt manganese lithium aluminate quaternary material, the phosphorus element is enriched on the surfaces of the particles, and the niobium element is uniformly distributed in the particle body phase. The distribution mode of the phosphorus element and the niobium element can improve the cycling stability of the material and relieve the corrosion of electrolyte to the material.

Method for raising yield of biodiesel

The invention provides a method for raising yield of biodiesel. The method comprises the following steps: mixing a raw material lipid and C1-C6 monohydric alcohol, adding an organic accelerator or adding biodiesel used as a solvent, reacting at the reactor temperature of 140-350 DGE C and at the pressure of 1-12 MPa, and collecting aliphatic acid monoester. According to the method, the organic accelerator is added into the raw material lipid, and without adding other inorganic acid-base catalyst, yield of biodiesel can be obviously raised.

Method for reducing oil acid value

The invention discloses a method for reducing the oil acid value. The method includes subjecting an oil material, monohydric alcohol and a catalyst to mixing contact, wherein the catalyst is acid type ion exchange resin. The method for reducing the oil acid value provided by the invention can effectively reduce the oil acid value. While simplifying the technological process, the method can further acquire biodiesel with an acid value up to the BD100 acid value standard.

Niobium-doped nickel-cobalt-manganese lithium aluminate quaternary material, preparation method thereof and lithium ion battery containing niobium-doped nickel-cobalt-manganese lithium aluminate quaternary material

The invention relates to a niobium-doped nickel cobalt manganese lithium aluminate quaternary material, a preparation method thereof and a lithium ion battery comprising the niobium-doped nickel cobalt manganese lithium aluminate quaternary material. The niobium-doped nickel cobalt manganese lithium aluminate quaternary material comprises particles with the chemical formula of LiNi < 1-x-y-z-n > Co < x > Mn < y > Al < z > Nb < n > O < 2 >, 0 < x < = 0.2, 0 < y < = 0.1, 0 < z < = 0.05, and 0.002 < n < = 0.02; wherein the ratio of A to D is 0.9 to 1.1; on the basis of the total mole of the nickel element, the cobalt element, the manganese element, the aluminum element and the niobium element on the surfaces of the particles, A represents the mole ratio of the niobium element on the surfaces of the particles; on the basis of the total mole of the nickel element, the cobalt element, the manganese element, the aluminum element and the niobium element in the granular phase, D represents the mole ...

Preparation method of biological diesel fuel

The present invention provides a preparation method of biological diesel oil and comprises that grease is reacted with C1-C6 monohydric alcohol inside a reactor while alkali metal compound exists, and fatty acid ester is separated from material after the reaction to obtain the biological diesel oil, wherein, the existing quantity of the alkali metal compound is 0.001 to 0.007wt percent which is counted by metal and is corresponding to the weight of the grease; the temperature inside the reactor is 100 DEG C to 280 DEG C and the pressure is 1MPa to 8MPa. The method provided by the present invention has the large disposal quantity of raw material and the high yield of the biological diesel oil.

Preparation of monoalkylated benzene

The present method of monoalkyl benzene is characterized by that under the conditions of that its temp. is 100-300 deg.C and its pressure can make reactant be in liquid state said invented method canmake benzene and polyalkylbenzene whose mole ratio of benzene ring and substituted alkyl is 1-50:1 contact with loaded or non-loaded heteropolyacid, heteropolyacid salt or heteropolyacid acidic salt and make them produce reaction. As compared with existent preparation method using zeolite as catalyst said method possesses the following advantages: 1. reaction temp. is reduced by 30-100 deg.c, andreaction pressure is reduced by 0.5-1.5 MPa; 2. conversion rate of polyalkylbenzene is raised by above 10%; 3. side reaction is less and impurity content is low; and 4. activity and stability of catalyst are high, and its activation method is simple.

Method for preparing dichloropropanol by glycerin chlorination

The invention relates to a method for preparing dichloropropanol by glycerin chlorination, comprising the following steps: guiding chlorine hydride to the glycerin for reaction under the catalysis of naphthenic acid functioning as catalyst, and collecting the dichloropropanol as the product of the reaction after the reaction is finished. Compared with the prior method for preparing dichloropropanol, the method for preparing the dichloropropanol by glycerin chlorination has the advantages that the catalyst can be reutilized, has high activity and good selectivity and less byproducts of reaction are generated.

Method and system for continuously producing 5-hydroxymethylfurfural and 2,5-furandicarboxylic acid

Disclosed is a process for continuously producing 5-hydroxymethylfurfural and 2,5-furandicarboxylic acid, comprising: (1) in a dual liquid phase reaction medium containing a polar organic solvent and an aqueous halogenated quaternary ammonium salt solution, in the presence of a protonic acid catalyst, subjecting a fructose-based carbohydrate to an intramolecular dehydration reaction to produce an organic phase containing 5-hydroxymethylfurfural; and (2) adding water to the organic phase containing 5-hydroxymethylfurfural obtained in step (1), and in the presence of an oxidation catalyst and oxygen gas, subjecting the 5-hydroxymethylfurfural to an oxidation reaction to produce 2,5-furandicarboxylic acid. The process can continuously produce 5-hydroxymethylfurfural and 2,5-furandicarboxylic acid by starting from fructose-based carbohydrates, avoids the separation and purification of 5-hydroxymethylfurfural during the process of producing 2,5-furandicarboxylic acid, and has the advantages such as simplicity, low generation and emission of three wastes, environmental friendliness, and the like.