40results about How to "Quick and thorough response" patented technology

The invention discloses a loading type Pd base metal nanometer cluster catalyst, a preparing method and applications thereof. The catalyst comprises Pd metal nanometer particles of 1-25nm, or bimetal or polymetal nanometer particles containing Pd, and ferric oxide nanometer particles, wherein the ferric oxide nanometer particle is used as the carrier, has the primary particle size of 5-200nm, and has the general formula of FeyOx; the bimetal or polymetal nanometer particles are selected from one or a plurality of Pt, Rh, Ru, Os, Ir and Re; when the metal nanometer particles are Pd nanometer particles, x / y is greater than 1, but is smaller than 4 / 3, or is greater than 4 / 3, but is smaller than 3 / 2; and when the metal nanometer particles are bimetal or polymetal nanometer particles containing Pd, x / y is greater than 1, but is smaller than or equal to 3 / 2. The catalyst has excellent activity, selectivity and stability on the selective hydrogenating synthesis chlorinated arylamine of the chlorinated aromatic compounds, solves the problems of hydrogenolysis and dechlorination of products in the process of the Pd catalyst catalyzing the chlorinated aromatic compounds to hydrogenate to prepare the chlorinated arylamine, and has important industrial application values.

A method for reducing preparing of copper and chromium containing abrasion resisting cast iron through copper slag fusion and dilution is conducted according to the following steps that firstly, fusion copper slag with the temperature being 1,200-1,250 DEG C is subjected to dilution treatment, the fusion slag left after sulfonium removal serves as raw material melt, or the fusion copper slag obtained after dilution treatment serves as raw material melt; secondly, the temperature is increased to 1,400-1,450 DEG C, a stirring paddle is used for stirring, and a molten bath with a centrifugal vortex is formed in a reducing furnace; thirdly, a reducing agent is sprayed for vortex reducing and smelting, and slag is discharged; and fourthly, a chromium-iron alloy is added for tempering and smelting, and casting is conducted. The method is rapid and thorough in reaction, and the construction period process is short; and the technology is simple, the equipment investment is low, energy saving and environment friendliness are achieved, cost is low, and high economic value is achieved.

The invention discloses a reaction system for countercurrent continuous esterification of biodiesel. The system comprises a raw material storage tank, a methanol storage tank, at least one first reaction tower and at least one second reaction tower, and at least one separator connected between a reaction product outlet of the first reaction tower and a material inlet of the second reaction tower. The raw material storage tank is connected to a catalyst storage tank and a material inlet at the upper part of the first reaction tower; the methanol storage tank is connected to a methanol inlet at a lower part of the second reaction tower; and a methanol outlet at the top of the second reaction tower is connected to a methanol inlet at the bottom of the first reaction tower. The invention realizes countercurrent esterification of biodiesel, and real-time reaction and separation of glycerol, water and methanol, greatly shortens the reaction time, and achieves thorough reaction.

The invention relates to manganese charcoal catalytic internal electrolysis filler as well as a preparation method and an application thereof. The internal electrolysis filler is prepared from manganese ore wastes, activated charcoal, an adhesive and a pore-foaming agent, wherein the mass percent of the manganese ore wastes is 40-65%, the mass percent of the activated charcoal is 35-60% and the sum of mass percents of the manganese ore wastes and the activated charcoal is 100%. The method comprises the following steps: grinding the manganese ore wastes; adding the activated charcoal, the adhesive and the pore-foaming agent; putting into a muffle furnace after balling to be roasted for 2-3 hours at 1100 DEG C; and preparing a final product. Meanwhile, the application comprises the following steps: using the final product in high concentration organic wastewater; aerating for 2 hours; and removing organic matters. The filler provided by the invention has the beneficial effects that a novel catalytic internal electrolysis filler is prepared by applying the manganese ore waste, so that the method is convenient to operate, treats wastes by wastes, and is energy-saving, good in removal effect of organic matters, strong in practicality and wide in prospect.

The invention relates to a treatment method of a heat-treatment tail gas containing a brominated flame retardant material. The method comprises the following steps: heating a reactor and fusing the fused salt in the reactor; diluting the heat-treatment tail gas containing the brominated flame retardant material by utilizing air or oxygen; adjusting the gas intake volume concentration to reach 30% to 90%; and continuously leading the mixed gas into the reactor under the speed rate of 0.1L / min to 0.5L / min. After the reaction is finished, the destruction removal rate of the harmful component in the discharged tail gas can reach 80% to 100%. In the reactor, peroxy ions O2<2->, superoxy ions O<2-> and the like, which are generated by the reaction between the high-temperature fused salt and oxygen, can quickly destroy the brominated organic matter in the tail gas, thereby generating CO2, H2O, NaBr and the like without dioxin and other by-products. The method has the advantages of being rapid and complete in reaction, free of secondary pollution, easy to operate and the like.

The embodiment discloses an environment-friendly coal saving agent including a component A and a component B; the component A comprises polyvinyl chloride ether sodium sulfate, sodium dodecyl benzene sulfonate, sodium hydroxide and triethanolamine, and the component B comprises sodium chloride, potassium chloride, potassium chlorate, calcium chloride, sodium nitrate, manganese sulfate, ferrous sulfate and cerium nitrate. The environment-friendly coal saving agent provided by the invention makes the component A having good roles of supporting combustion, cleaning ash, removing coke and fixing sulfur and the component B having excellent permeability and catalysis properties dissolved into one whole, has a synergistic effect, and effectively optimizes and improves the properties of the additives; and secondly, the environment-friendly coal saving agent is a liquid product, is mixed with fire coal more evenly, allows the effective components to be permeated into the fire coal in short time, and has better environmental-protection and energy-saving effects. Therefore, the environmental-protection coal saving agent promotes full combustion of the fire coal, and has good environmental-protection and energy- saving effects.

The invention relates to the technical field of electronic chemicals, in particular to a preparation method of lithium difluorophosphate. The preparation method of the lithium difluorophosphate comprises the following steps: (1) reacting phosphorus oxychloride with anhydrous triphosphate to generate dichlorophosphate; (2) reacting the dichlorophosphate with a fluorinating reagent to generate difluorophosphate; (3) reacting the difluorophosphate with acid to displace difluorophosphoric acid; (4) purifying the difluorophosphoric acid, and reacting with a lithium source to generate lithium difluorophosphate; the step (1) to the step (4) are all carried out in an organic solvent. The method is low in raw material cost and easy to obtain, mild in reaction condition, simple in process, rapid and thorough in reaction, few in three wastes, high in operability and suitable for large-scale production, and a high-purity product is obtained while high yield is guaranteed.

The invention discloses a copper-contained waste metal copper recycling process. The process comprises the following steps of firstly, preparing copper-contained clinker; secondly, preparing copper-contained powder; thirdly, brick making, wherein the copper-contained clinker prepared in the first step, and the copper-contained powder made in the second step are burdened until the copper containingamount reaches above 25wt%, and then enter a brick making system, and a solidifying agent is prepared for preparing a copper brick block; fourthly, smelting; and fifthly, smelting furnace smoke treatment. According to the copper-contained waste metal copper recycling process, metal copper in the copper-contained waste can be recycled, meanwhile, non-copper metal elements in the recycled copper alloy can be reduced, and a raw material can be provided for subsequent preparing of refined copper.

The invention provides novel far-infrared cotton fiber suitable for infants and children and a preparation method of the novel far-infrared cotton fiber. The preparation method comprises the following steps: (1) adding biological protease into a sericin solution obtained after natural silk degumming for a reaction, and taking out a product I for freeze drying, so as to obtain a hydrolysis product of sericin polypeptide; (2) placing cotton fiber into a gaseous nitrogen dioxide environment to conduct photophobic oxidation on primary hydroxyl groups of cotton fiber, and taking out a product II for vacuum standing, so as to obtain oxygenated cotton fiber; (3) placing the hydrolysis product of the sericin polypeptide into deionized water, stirring, adding nano ceramic powder and sodium alginate, and stirring uniformly to obtain a sericin-contained far-infrared treatment liquid; (4) putting the oxygenated cotton fiber into the sericin-contained far-infrared treatment liquid, carrying out impregnating and oscillation, and taking out for pre-baking, baking, water washing and drying to obtain the novel far-infrared cotton fiber suitable for infants and children. The novel far-infrared cotton fiber has excellent far-infrared performance without impacting the performances such as mechanical strength, softness, close-fitting performance, hygroscopicity and air-permeability.

The invention discloses an acid liquid neutralizing bag, namely an acid absorbing pillow, suitable for a lead-acid storage battery, and a preparation method of the pillow. The major material of the acid absorbing pillow is an alkaline neutralizing powder; the alkaline neutralizing powder is prepared from the following components in parts by weight: 50-90 parts of neutralizer, 10-30 parts of swelling agent, 1-5 parts of auxiliaries, 1-3 parts of dispersant and 0.02-0.5 part of acid-base indicator. Various components can be ground into thick particles or common powder. The components are evenly mixed by use of a stirring kettle and the like and packaged. The acid absorbing pillow is manufactured by packaging the alkaline neutralizing powder with a bag manufactured by use of a material having an acid liquid adsorption function, such as adsorption cotton and hydrophilic non-woven cloth. The acid absorbing pillow is stable and reliable, low in cost, simple to prepare and visual in effect, and has excellent practicability and operability.

The invention discloses a method for recovering cobalt, copper and iron from a waste cobalt-containing lithium ion battery, and belongs to the technical field of metallurgy. According to the method, by utilizing sensible heat of converter copper slag, an existing slag system and high-temperature reduction characteristics of a negative electrode carbon material and an aluminum foil current carrierin the waste cobalt-containing lithium ion battery, self-reduction smelting is realized, the content of magnetic iron in the slag is reduced, the viscosity of the slag is reduced, oxidized copper in the slag and cobalt oxide serving as a battery pyrolysis product are reduced, self-reduction smelting combining copper slag depletion and waste lithium ion battery recycling is achieved, copper-cobalt-iron alloy is obtained, and low-copper-content depleted slag is produced. The method is easy to implement and high in adaptability, a slag system with the property similar to that of the copper slag can be treated according to needs, and Cu, Co, Fe and other metal elements can be comprehensively recycled conveniently.

The invention discloses an aluminum ash deamination device and an aluminum ash deamination process. The device comprises a closed cylinder, a feeding hole, a dust removal exhaust valve, a high-temperature exhaust valve, a pressure release valve and a water inlet are arranged at the upper portion of the outer part of the closed cylinder, a discharge port and a water outlet are formed in the lower portion of the outer part of the closed cylinder, and a heating part is arranged at the outer side of the closed cylinder; a central shaft is mounted on the axis of the closed cylinder and is connectedwith a speed reducer; rake teeth are arranged on the central shaft, and rake tooth blades are arranged at the top ends of the rake teeth; arc-shaped reinforcing plates are installed on the connectingportion of the central shaft and the rake teeth, and every two adjacent reinforcing plates can form a semi-arc-shaped structure; sweeping rods are mounted in rake tooth intervals at the same horizontal position; and two sweeping rods are arranged in total and are positioned in two opposite rake tooth intervals. According to the deamination process, the reaction temperature and pressure intensityof aluminum ash and a catalyst are controlled through the deamination device, and reaction conditions are flexibly adjusted in the reaction process, so that nitrogen in the aluminum ash is converted into ammonia gas, and the purpose of deamination is achieved.

The invention discloses a wastewater treating device based on internal circulation and repeated use of a nanometer material. The wastewater treating device comprises a nanometer material and oxidant releasing system, a stirring reaction system, a precipitation separation drainage system and a permanent magnetic adsorption system. According to the wastewater treating device disclosed by the invention, based on extremely strong polymerization of the nanometer material, reducing substances such as organic compounds in wastewater are integrated with continuously added oxidant to carry out reaction, and harmful impurities such as the organic compounds in the wastewater are eliminated. According to the wastewater treating device, in the initial stage that the wastewater treating device is put into use, the enough quantity of the nanometer material is injected into the wastewater treating device along with the oxidant, the oxidant and the organic compounds are polymerized together by virtue of the nanometer material to form a large proportion of particles, the organic compounds are decomposed into CO2 and water under the action of the oxidant, and the wastewater is purified; after a round of work, nano-particles continuously search a new target and are repeatedly used. As the environment of repeated use of the nanometer material is created, the wastewater treating device has the characteristics of low cost, high efficiency, reliability in running, capability of realizing unmanned on duty for a long time and the like.

The invention provides a method for synthesizing lithium bis(fluorosulfonyl)imide. The synthetic method of the lithium bis(fluorosulfonyl)imide is characterized by comprising the following steps: (1) in a nitrogen atmosphere, sufficiently mixing bis(fluorosulfonyl)imide and an organic solvent, and putting a mixture into a reactor with a condenser; sequentially adding lithium fluoride and liquid-state hydrogen fluoride into the reactor and raising the temperature to react; (2) reducing the temperature of a reaction system, and decompressing and displacing by nitrogen to completely remove residual hydrogen fluoride gas, and filtering a reaction solution under the nitrogen atmosphere to remove insoluble matters, so as to obtain filtrate; (3) concentrating the filtrate by utilizing a high-vacuum decompression and desolvation method; (4) cooling a concentrated solution and adding a low-polarity solvent; recrystallizing at low temperature, and filtering and carrying out decompression and drying treatment at 40 DEG C to obtain the pure lithium bis(fluorosulfonyl)imide. The synthetic method has the advantages that used reagents are cheap and easy to obtain, a preparation process is simple, a reaction is rapid and complete, a few of byproducts are produced and are easy to remove, a post-treatment manner is simple and convenient, a product has high purity and the synthetic method is very suitable for industrial production.

The invention discloses a method for preparing lithium hexafluorophosphate from an organic solvent. The method comprises the following steps: I, dissolving lithium fluoride into solvents such as triethylamine to obtain a solution A; II, filtering the solution A to obtain filtrate B, adding excessive phosphorus pentafluoride into the filtrate B; III, directly precipitating out a lithium hexafluorophosphate product, and filtering, cleaning and drying to obtain a product. Compared with a conventional organic solvent method, the method does not need use a surfactant, can truly dissolve lithium fluoride, and can effectively remove other impurities in lithium fluoride through filtration, and therefore, crude lithium fluoride can be adopted, and low-cost purifying can be realized. Meanwhile, a non-polar solvent is used for better stabilizing phosphorus pentafluoride, so that side reaction is not liable to occur.

The invention discloses a method for preparing glycolic acid from glycerinum. Glycerinum used as a raw material and water used as a solvent undergo an oxidative degradation reaction in the presence of an oxidizing agent and a stabilizing agent under the condition of UV-irradiation, so as to obtain glycolic acid. The stabilizing agent is a zinc compound. According to the invention, peroxide is decomposed through ultraviolet light to generate free radical simultaneously with cooperation of the stabilizing agent, so as to realize selective regulation and control of the product. Steps for preparation of the glycolic acid by the above method are simple, heating and compression are not required, and the method is easy to control. The oxidizing agent and the stabilizing agent used in the invention are low-cost, and no organic solvent is needed in the degradation process. Under the mild condition, preparation conversion of the product is realized. In comparison with a present conversion method of a micromolecular raw material from a petroleum-base source, the method provided by the invention has obvious advantages. The method is a green, environmentally-friendly, efficient and economical glycolic acid production method which has huge potential.

The invention discloses a preparation method of a thifluzamide key intermediate, namely 2,6-dibromo-4-(trifluoromethoxy)aniline. The method comprises the following operating steps: (1) adding water into a reaction bottle, dropwise adding concentrated sulfuric acid under the stirring condition, putting metal bromide and a catalyst, adding 4-trifluoromethoxyaniline and stirring for 30 minutes; (2) dropwise adding hydrogen peroxide at 30 DEG C, controlling the dropwise adding speed to enable the reaction temperature to be slowly increased to 50 DEG C, controlling the temperature of the reaction bottle by cooling liquid at 50 to 55 DEG C, continuously adding the hydrogen peroxide dropwise, and performing heat-preserving reaction at 50 to 55 DEG C for 2 to 3.0 hours after addition; (3) after the reaction, adding water and stirring, and filtering to obtain white-like 2,6-dibromo-4-trifluoromethoxyaniline. The synthesis method provided by the invention has the characteristics of environmental friendliness, safety, no three wastes, high synthesis yield and high product quality.

The invention provides a bi-component organic silicon pouring sealant, which comprises a component A and a component B, wherein the component A is composed of vinyl polydimethylsiloxane, a filler anda curing accelerator, and the component B is composed of hydrogen-containing silicone oil, a filler, alkynyl cyclohexanol, a high-activity platinum complex and a coupling agent. In the invention, theraw materials of the bi-component organic silicon pouring sealant comprise the component A and the component B, the component A is composed of vinyl polydimethylsiloxane, the filler and the curing accelerator in corresponding parts by weight, the component B is composed of the hydrogen-containing silicone oil, the filler, alkynyl cyclohexanol, the high-activity platinum complex and the coupling agent in corresponding parts by weight, then the component A and the component B are mixed according to the mass ratio of 1: 1, the obtained bi-component organic silicon pouring sealant can be rapidly cured under the condition of normal temperature, the added high-activity platinum complex can enable the component A and the component B to react more rapidly, fully and thoroughly after being mixed, the production efficiency is greatly improved, volume production is facilitated, and the pouring sealant has wide application prospects.

The invention relates to an ozone coordinated photocatalytic waste gas purification device. The device makes use of the principles of ozone oxidation reaction and photocatalytic reaction, can quickly and efficiently treat waste gas, the whole process only consumes electric energy, does not generate no secondary pollution, is energy-efficient, and can be widely used for purification of various waste gas.

A process for treating the sewage generated by preparing acetylene from calcium carbide includs such steps as adding the solution of the Fe salt, Zn salt and Cu salt to the sewage to make the pollutants become metal compounds, depositing, acid hydrolyzing to generate H2S gas and the solution of Fe salt, En salt and Cu salt, spraying NaOH solution to absorb H2S and generate sodium sulfide (or hydrosulfide), and reusing said solution to treat sewage.

A method for removing carbon from copper-containing molten iron by involving eddy currents in limestone, belonging to the field of metallurgical technology. The specific steps are: (1) The copper-containing molten iron obtained by reducing copper slag with a carbonaceous reducing agent is introduced into an induction furnace to ensure that the copper-containing molten iron is The temperature of the molten iron is ≥1450°C; (2) Stir the copper-containing molten iron centrally to form a vortex with a height-to-diameter ratio of 0.5 to 2.5; (3) Spray limestone powder into the center of the vortex, continue central stirring, and then eccentrically spray the limestone powder. Stir to generate CO 2 It is more fully mixed with the vortex; (4) the limestone powder is directly involved in the molten iron by the vortex and reacts with the molten iron to obtain decarburized copper-containing molten iron and slag; (5) decarburized copper-containing molten iron and slag Discharge in layers. This method has simple process, low investment, energy saving, environmental protection, low cost and high economic value. It can not only achieve the purpose of decarbonization, but also protect the copper element from being burned.

The invention relates to manganese charcoal catalytic internal electrolysis filler as well as a preparation method and an application thereof. The internal electrolysis filler is prepared from manganese ore wastes, activated charcoal, an adhesive and a pore-foaming agent, wherein the mass percent of the manganese ore wastes is 40-65%, the mass percent of the activated charcoal is 35-60% and the sum of mass percents of the manganese ore wastes and the activated charcoal is 100%. The method comprises the following steps: grinding the manganese ore wastes; adding the activated charcoal, the adhesive and the pore-foaming agent; putting into a muffle furnace after balling to be roasted for 2-3 hours at 1100 DEG C; and preparing a final product. Meanwhile, the application comprises the following steps: using the final product in high concentration organic wastewater; aerating for 2 hours; and removing organic matters. The filler provided by the invention has the beneficial effects that a novel catalytic internal electrolysis filler is prepared by applying the manganese ore waste, so that the method is convenient to operate, treats wastes by wastes, and is energy-saving, good in removal effect of organic matters, strong in practicality and wide in prospect.

The invention discloses a preparation method of a thifluzamide key intermediate, namely 2,6-dibromo-4-(trifluoromethoxy)aniline. The method comprises the following operating steps: (1) adding water into a reaction bottle, dropwise adding concentrated sulfuric acid under the stirring condition, putting metal bromide and a catalyst, adding 4-trifluoromethoxyaniline and stirring for 30 minutes; (2) dropwise adding hydrogen peroxide at 30 DEG C, controlling the dropwise adding speed to enable the reaction temperature to be slowly increased to 50 DEG C, controlling the temperature of the reaction bottle by cooling liquid at 50 to 55 DEG C, continuously adding the hydrogen peroxide dropwise, and performing heat-preserving reaction at 50 to 55 DEG C for 2 to 3.0 hours after addition; (3) after the reaction, adding water and stirring, and filtering to obtain white-like 2,6-dibromo-4-trifluoromethoxyaniline. The synthesis method provided by the invention has the characteristics of environmental friendliness, safety, no three wastes, high synthesis yield and high product quality.

The invention discloses a method of preparing transparent pigment yellow 180. The method comprises the following steps: preparing a diazotization solution, preparing a coupling solution, preparing a buffer solution through ammonium chloride and ammonia water, controlling the pH to 7-7.5, adding bi-octadecyl-dimethyl ammonium chloride, firstly, dripping 1 / 20-1 / 8 of the coupling solution, simultaneously dripping the diazotization solution and the coupling solution, controlling the dripping reaction time to 15 minutes to 8 hours, and controlling the reaction temperature to 10-50 DEG C; continuing to stir after dripping the solutions to ensure a complete coupling reaction, filtering and washing to remove the inorganic salt and a part of water-soluble impurities to obtain a crude product, adding an assistant and water, heating, and finally, filtering, drying and crushing to obtain a finished product. The method generates little production in the production process, the cost is low, the produced pigment is uniform in particle diameter distribution, the particles are soft, the crystal structure and crystal size are uniform with the product treated by an organic solvent, and the product is high in color strength, bright in color and excellent in light resistance and solvent resistance. The acylamino in the groups of the pigment yellow 180 greatly improves the combination firmness of the molecules, thereby improving such properties as solvent resistance, heat resistance, and the like.

A method for preparing copper-chromium-containing wear-resistant cast iron by reducing molten depleted copper slag is carried out according to the following steps: (1) depleting the molten copper slag at a temperature of 1200-1250 ° C; discharging the remaining slag as a raw material for melting body; or use the molten copper slag after depletion treatment as the raw material melt; (2) heat up to 1400-1450°C, stir with the stirring paddle, and form a molten pool with centrifugal vortex in the reduction furnace; (3) spray The reducing agent is used for vortex reduction smelting; the slag is discharged; (4) ferrochrome alloy is added for quenching and tempering smelting and casting. The method of the invention has the advantages of quick and thorough reaction, short construction period, simple process, low equipment investment, energy saving, environmental protection, low cost and high economic value.

The invention relates to a treatment method of a heat-treatment tail gas containing a brominated flame retardant material. The method comprises the following steps: heating a reactor and fusing the fused salt in the reactor; diluting the heat-treatment tail gas containing the brominated flame retardant material by utilizing air or oxygen; adjusting the gas intake volume concentration to reach 30% to 90%; and continuously leading the mixed gas into the reactor under the speed rate of 0.1L / min to 0.5L / min. After the reaction is finished, the destruction removal rate of the harmful component in the discharged tail gas can reach 80% to 100%. In the reactor, peroxy ions O2<2->, superoxy ions O<2-> and the like, which are generated by the reaction between the high-temperature fused salt and oxygen, can quickly destroy the brominated organic matter in the tail gas, thereby generating CO2, H2O, NaBr and the like without dioxin and other by-products. The method has the advantages of being rapid and complete in reaction, free of secondary pollution, easy to operate and the like.

The invention provides a polyurea microcapsule and a preparation method thereof. The preparation method comprises the following steps: (1) adding an organic phase containing diphenylmethane diisocyanate to an aqueous phase containing a surfactant, stirring and emulsifying to obtain emulsion A (2) Diethylenetriamine is added to an aqueous solution containing a surfactant to obtain a continuous phase solution B; (3) The continuous phase solution B is added to emulsion A to initiate interfacial polymerization on the oil-water interface to obtain polyurea microcapsules containing suspension. The method of the present invention adopts diphenylmethane diisocyanate, the toxicity and volatility are relatively small, and the impact on environmental hazards and experimental operations is small. The present invention directly adds diethylenetriamine after the emulsion is formed, and the reaction is more rapid and thorough. The efficiency is also higher, so that the cost is further reduced. This method adopts a one-step direct reaction, and the temperature can be controlled at room temperature without further heating, and the energy consumption of the whole process is very low.

A reagent for detecting von Willebrand factor. The detection reagent applies latex enhanced immunoturbidimetry method, and comprises a reagent 1, a reagent 2 and a von Willebrand factor standard substance or a standard curve. The reagent 1 is an anti-von Willebrand factor antibody latex reagent, which is formed by combining the anti-von Willebrand factor and latex particles; the reagent 2 is an application liquid; the von Willebrand factor standard substance is a reaction buffer containing von Willebrand factors with different concentrations; and the standard curve is a standard curve of the content of von Willebrand factor in human body. Compared with the prior art, the reagent for detecting von Willebrand factor provided by the invention realizes rapid detection of von Willebrand factor, and has high sensitivity and reliable repeatability, and can be applied to automatic analytical instruments.