210 results about "Spray dryer" patented technology

The invention discloses a preparation method of an efficient lithium oxalate lithium supplement agent, and relates to the field of preparation of lithium ion battery positive electrode lithium supplement agents, and the preparation method comprises the following steps: S1, adding CNTs into an organic solvent for ultrasonic cleaning, then cleaning the CNTs with pure water, and finally drying; s2, concentrated sulfuric acid and concentrated nitric acid are prepared into a mixed acid solution, CNTs are added, and ultrasonic reflux is carried out; then cleaning the CNTs until the washing water is neutral, and finally drying to obtain oxidized CNTs; s3, the oxidized CNTs and (NH4) 2MoS4 are dissolved in water, then the precursor solution is atomized into micron-sized liquid drops, the micron-sized liquid drops are cracked in an inert atmosphere, and a three-dimensional composite material MoSx-CNTs is prepared; and S4, dissolving the three-dimensional composite material MoSx-CNTs and lithium oxalate in an ethanol solution, and drying in an inert atmosphere in a high-pressure spray dryer to obtain the lithium oxalate-coated MoSx-CNTs composite material. According to the invention, low-voltage and efficient decomposition of lithium oxalate is realized by regulating and controlling metal nodes and pore structures of MOFs, and meanwhile, the damage of residues to the microstructure of the battery is avoided.

A method for preparing sodium vanadium fluorophosphate as a positive electrode material for sodium-ion batteries on the basis of spray drying, which method aims to solve the problems of poor electronic conductivity and fluorine loss in sodium vanadium fluorophosphate as a positive electrode material for sodium-ion batteries. The method comprises dissolving a carbon source, a phosphorus source, a sodium source and a vanadium source in water, and then drying same in a spray dryer to obtain a precursor powder; and then uniformly mixing the precursor powder with a fluorine source, and calcining the resulting mixture for 3-6 h to obtain sodium vanadium fluorophosphate, namely, a positive electrode material for sodium ion batteries. The material is made of micron spherical particles having a core-shell structure, the particle size is about 8 μm, the shell thickness is about 200 nm, the initial specific discharge capacity is 110.60 mAh / g at a rate of 1 C, and the specific discharge capacities are 97.90 mAh / g and 74.70 mAh / g at rates of 10 C and 30 C, respectively. The present invention can be used in the field of sodium-ion batteries.

The invention relates to the technical field of cereal milk tea preparation, in particular to sea-buckthorn cereal milk tea and a preparation method thereof.The method comprises the steps that sodium caseinate is stirred and dissolved in deionized water and then subjected to water bath to obtain a sodium caseinate solution, and soy isoflavone is fused into the cooled sodium caseinate solution to obtain a film forming solution; performing vacuum spray drying on the hippophae rhamnoides fruit solution through a vacuum spray dryer to obtain hippophae rhamnoides fruit powder particles, and mixing the film-formed fried rice, the hippophae rhamnoides fruit powder particles and ingredients to obtain the hippophae rhamnoides fruit grain milk tea, determining whether the preparation stability of the hippophae rhamnoides fruit grain milk tea meets the requirement or not based on the maximum difference quantity of the thickness of the film layer on the surface of the film-formed fried rice; determining whether the immersion depth of the stirring blades needs to be increased or not; determining whether the inclination angle of the drum needs to be reduced; and determining the number of cyclic shearing times based on the volume average particle size of the sea buckthorn fruit powder particles. The preparation stability of the hippophae rhamnoides fruit grain milk tea is improved.

The invention relates to the technical field of preparation of a lithium ion battery positive electrode lithium supplement agent, in particular to preparation of a composite lithium supplement agent, which comprises the following steps: dissolving lithium hydroxide and oxalic acid in pure water to prepare a lithium oxalate saturated solution, and adding a metal catalyst; preparing lithium oxalate particles from the lithium oxalate saturated solution containing the metal catalyst through a spray dryer in an inert atmosphere; the lithium oxalate particles are put into a CVD rotary furnace, organic steam is introduced, the organic steam is decomposed through a metal catalyst to generate carbon, and the carbon is deposited on the surface of lithium oxalate; reducing the temperature of the CVD rotary furnace, introducing a silicon source, introducing water vapor, and coating the surface of the material with a SiO2 film; and reducing the temperature of the CVD rotary furnace, introducing a modifier, and carrying out a cross-linking reaction on the modifier and the surface of the material to obtain the final product Li2C2O4 (at) C (at) SiO2 (at) CF3. According to the invention, the defects of lithium oxalate insulation, high decomposition voltage and poor air stability are overcome.

The invention discloses a rapidly synthesized ferric sodium pyrophosphate electrode material, a preparation method thereof and a positive electrode. Relates to the technical field of batteries. The preparation method comprises the following steps: S1, mixing a sodium source, an iron source, a phosphorus source and a carbon source, adding a preset volume of deionized water, and stirring until the raw materials are completely dissolved to obtain a light yellow transparent solution; s2, adding a preset amount of modified carbon nanotubes into the light yellow transparent solution, and dispersing in an ultrasonic environment to obtain a stable suspension; s3, starting a spray dryer, and collecting yellow green spherical precursor powder from a discharge port; s4, placing the yellow green spherical precursor powder obtained by spray drying in a magnetic boat, and carrying out heat preservation at 300 DEG C in a pure argon environment at a heating rate of 2 DEG C / min for 5 h to obtain black powder; and S5, transferring the black powder into Joule thermal equipment, and reacting for a preset time under a preset condition to obtain a final black powdery product. Through innovative process design and material modification, the core problems of long period, poor conductivity, low tap density and the like in the traditional preparation technology are solved.

The application belongs to the field of fine chemical industry and environmental protection, and particularly relates to a method for preparing metal triflate by using high gravity reaction. The method comprises the following steps: 1, using trifluoromethylsulfonyl chloride and anhydrous HF gas as raw materials to generate trifluoromethylsulfonyl fluoride gas; 2, performing gas-liquid contact reaction of the trifluoromethylsulfonyl fluoride gas with an alkali metal solution to obtain a mixed solution; 3, performing solid-liquid separation on the mixed solution by using a filter press, and the liquid phase is a triflate salt solution; 4, drying the triflate salt solution by using a spray dryer to obtain a solid-phase product triflate salt. The method uses trifluoromethylsulfonyl chloride and anhydrous HF as raw materials to replace triflic acid in the traditional method, and utilizes high gravity reaction, so that the production cost is greatly reduced. The process is simple, the obtained product triflate metal salt has low impurity content, is superior to the industry standard, the process is zero emission, and has good economic value and social value.

The utility model discloses a plant extracting and drying device, which belongs to the technical field of drying devices and comprises a spray drying mechanism and a feeding mechanism, the spray drying mechanism comprises a drying tower and a first nozzle, the drying tower is sealed, the first nozzle is arranged at the top of the drying tower, one end of the first nozzle is provided with a feeding port, and the other end of the first nozzle is provided with a discharging port. The other end of the first nozzle is located in the drying tower, the feeding mechanism comprises a feeding pipeline, the feeding pipeline is communicated with the feeding port, and a discharging port is formed in the bottom of the drying tower; the first nozzle comprises a connecting part and a centrifugal part, the connecting part is connected with the feeding port, the centrifugal part is connected with the other end of the connecting part, and the centrifugal part is located in the drying tower; the diameter of the centrifugal part is gradually increased in the direction from the connecting part to the interior of the drying tower, the first nozzle is provided with the connecting part and the centrifugal part, and the diameter of the centrifugal part is gradually increased along the outer side, so that spray with large width and uniform distribution can be generated, and the drying efficiency is improved.

The utility model relates to the technical field of spray drying equipment, in particular to an anti-stockpiling spray dryer which comprises a spray dryer body, a discharging assembly is arranged on the lower portion of the spray dryer body, the discharging assembly comprises a receiving hopper connected with the spray dryer body, a discharging channel is arranged on the lower portion of the receiving hopper, and the discharging channel is communicated with the discharging assembly. The anti-blocking device used for assisting in discharging is arranged in the discharging channel, materials in the discharging channel can be scattered through the anti-blocking device, the phenomenon that the materials are excessively stacked is avoided, and the operation stability and the production efficiency of the device are improved.

This utility model relates to the technical field of spray dryers for traditional Chinese medicine extracts, specifically a spray dryer for traditional Chinese medicine extracts, including a machine body, a cover plate, a connecting mechanism, and a cleaning mechanism. The machine body has a support base at its bottom, and several support bases are provided. The cover plate is connected to the machine body via the connecting mechanism. The connecting mechanism includes a fixing block, an annular groove, an electromagnet, and bolts. The annular groove is formed on the side wall of the cover plate. One end of the fixing block is connected to the machine body via the bolts, and the other end of the fixing block extends into the annular groove, with the portion of the fixing block extending into the annular groove matching the groove. One end of the electromagnet is connected to the top of the machine body, and the other end of the electromagnet is attracted to the side wall of the cover plate. Several connecting mechanisms are provided. The cleaning mechanism includes a through groove, a vertical block, a sliding component, a sealing block, and a scraper. This utility model of a spray dryer for traditional Chinese medicine extracts solves the problem of inconvenient cleaning of current equipment.

The embodiment of the application discloses a preparation method of a target temperature-sensitive drug-loaded composite microsphere based on attapulgite, which comprises the following steps: carrying out purification treatment on original attapulgite based on an aqueous solution of inorganic strong acid to obtain purified attapulgite; mixing the purified attapulgite, gypenoside, inulin and folic acid to obtain a mixture, and carrying out mixing treatment on the mixture based on deionized water to obtain a composite microsphere suspension; conveying the composite microsphere suspension into a spray dryer to carry out granulation to obtain primary drug-loaded composite microspheres; adopting a melt impregnation method to coat lauric acid on the surface and pores of the primary drug-loaded composite microspheres, and cooling the primary drug-loaded composite microspheres coated with lauric acid to room temperature to obtain the target temperature-sensitive drug-loaded composite microspheres. The application can not only realize temperature change-based on-off type control release of drugs, significantly improve the targeting and treatment accuracy of drugs, but also reduce the systemic toxic side effects of chemotherapy from the source, and realize efficient and low-toxicity synergistic treatment.

The invention provides a spray drying method of a semeglutide solution, which is characterized in that the semeglutide solution and drying gas are simultaneously introduced into a spray dryer, the ratio of the airflow velocity (kg / h) of the drying gas to the feeding flow velocity (kg / h) of the semeglutide solution is (120-900): 1, and the air inlet temperature of the drying gas is 40-60 DEG C. The spray drying method disclosed by the invention is high in production efficiency and short in production time, and meanwhile, the yield and the product quality can be kept unchanged.

The utility model relates to a spray dryer with a mother liquor preheating function, which aims to solve the technical problem that the mother liquor is inconvenient to preheat by the aid of hot air separated by a cyclone separator at present, and comprises a spray dryer body, and the top of the spray dryer body is communicated with a preheating box through a first guide pipe. The other end of the preheating box is communicated with a liquid inlet pipe; the tail end of the spray dryer body is communicated with a cyclone separator through a second guide pipe, the top of the cyclone separator is connected with the bottom of a preheating box through a third guide pipe, rotating joints are fixed to the two end faces of an inner cavity of the preheating box in a penetrating mode, and a plurality of evenly-distributed aluminum pipes are communicated between the two rotating joints. The mother liquor is preheated through hot air with temperature separated by the cyclone separator, so that energy is saved when the mother liquor enters the drying machine for drying, meanwhile, the mother liquor can be shunted through a plurality of aluminum pipes after entering the preheating box, the contact area between the mother liquor and the hot air is increased, and the preheating effect is improved.

The invention discloses a preparation method and a quality control method of a traditional Chinese medicine composition for stroke and middle meridian syndromes caused by extravasated blood blocking collaterals, and relates to the field of traditional Chinese medicines. The preparation method comprises the following steps: extracting salvia miltiorrhiza by adopting a composite enzymolysis-two-phase low-temperature extraction method, extracting erigeron breviscapus by adopting citric acid-ethanol extraction, extracting ligusticum wallichii by adopting double-template molecular imprinting-stir-frying with bran, extracting kudzu vine root by adopting a microwave method, adding auxiliary materials including hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose and beta-cyclodextrin, drying by adopting a centrifugal spray dryer, and packaging by adopting a packaging machine. The Maillard reaction is regulated and controlled. The method has the advantages of efficient extraction, component optimization, preparation stabilization, drug effect enhancement, adverse reaction rate reduction, quality controllability and the like.

The utility model discloses a microcapsule spray dryer for producing emulsified powder essence, which realizes vertical circulating stirring of raw materials in a material storage tank through the rotary motion of a spiral conveying shaft in a material guide barrel; the spiral conveying shaft pumps the raw materials located on the lower portion of the material storage tank upwards along the material guide barrel, then the raw materials flow back through the upper end of the material guide barrel, and circular flowing of the raw materials in the vertical space is achieved. Therefore, the phenomena of local deposition and layering of the raw materials in the storage tank are avoided. Especially for emulsion with large density difference between the wall material and the core material, layering phenomena such as wall material sedimentation and core material oil phase floating are effectively prevented, the uniformity and the stability of the raw materials in the storage process are remarkably improved, and then the embedding rate and the structural integrity of the microcapsule are improved.

Provided herein is a method for preparing a batch of feed solution for spray drying from at least one solvent and two or more solid components comprising at least one excipient and at least one active pharmaceutical ingredient (API), wherein the method is performed in a system comprising a deagglomeration device and a tank that are fluidly connected to form a fluid loop, the method comprising: (i) charging the solvent into the system (ii) charging the two or more solid components into the system, wherein at least one solid component of the two or more solid components is charged into the system through the deagglomeration device, (iii) circulating the solvent and the two or more solid components around the fluid loop through the tank and the deagglomeration device while mixing with the deagglomeration device to dissolve the two or more solid components in the at least one solvent, to prepare the batch of feed solution, wherein the batch has a volume of 50 L to 500 L. Related methods for delivering a continuous supply of feed solution for a spray dryer and systems for preparing batches of feed solution for a spray dryer are also provided.

The invention belongs to the related technical field of drying devices, and particularly discloses a spray freeze drying tower which comprises a support, a side frame and a spray dryer, the side frame is installed on one side of the outer wall of the support, the spray dryer is arranged above the side frame, a drying tower body is arranged in the support, and the drying tower body is arranged above the side frame. A rectangular barrel is connected to the interior of the drying tower body in a penetrating mode, an end opening of the spray dryer communicates with the interior of the drying tower body through an arranged conveying assembly, side rods are arranged on the two sides of the inner wall of the rectangular barrel, and the interiors of the two side rods are jointly connected with a bag net through correspondingly-arranged sliding parts; a sliding frame is jointly installed in the two side rods in a sliding mode, a material scattering part is arranged at the position, close to the middle, in the sliding frame, and a driving part is arranged at the lower end in the sliding frame, the oyster peptide extract can be well dried, drying is sufficient in the drying process, and excessive adhesion is avoided.

A spray dryer arrangement comprising a spray dryer device (1), a heat pump (14) and a dehumidifier device (24), a primary liquid circuit (20) and a secondary liquid circuit (22). The spray dryer arrangement comprises a bypass conduit (66) provided in the secondary liquid circuit for bypassing a second heat exchanger (23), and a controllable valve (34) for controlling a flow of secondary liquid into the bypass conduit (66) and to the second heat exchanger (23) respectively, a temperature sensor (35) for measuring the temperature of the secondary liquid in the secondary liquid circuit (22), and a control unit (36) configured to control the controllable valve (34) on basis of input from the temperature sensor (35), and configured to thereby regulate the temperature of the secondary liquid in the secondary circuit (22) to be within a predetermined temperature range.

A multi-stage drying integrated spray dryer relates to the technical field of material drying equipment and comprises a main body rack, and a feed atomization unit, a multi-stage drying unit, a gas-solid separation unit and a waste heat dissipation unit are arranged on the main body rack. The feeding atomization unit adopts a composite atomization mode to guarantee uniform particle sizes of materials, the multi-stage drying unit improves the drying effect through three-stage gradient drying, the gas-solid separation unit optimizes the structure to achieve efficient separation, and the waste heat dissipation unit rapidly cools and prevents moisture regain. The problems that existing equipment is uneven in atomization particle size, insufficient in drying, incomplete in gas-solid separation, prone to moisture regaining and deterioration and the like are solved, and the finished product quality and the production efficiency are improved.

The invention relates to a flame retardant for polyester fibers and a preparation method thereof, and relates to the technical field of flame retardant synthesizing.The preparation method comprises the following steps that pre-dispersion and activation are conducted, specifically, water and melamine are added into a reaction kettle, stirring is conducted to obtain a uniform suspension, and then a water-soluble polymer is added into the suspension; complex reaction: slowly heating and stirring; regulating and controlling coprecipitation and crystallization: slowly adding cyanuric acid into the reaction kettle, and then heating and stirring for reaction to obtain slurry; after the reaction is finished, cooling the slurry, adding a wetting dispersant, stirring, conveying to a centrifugal spray dryer for drying, and collecting to obtain the flame retardant. The flame retardant for the polyester fiber, prepared by the preparation method disclosed by the invention, has the advantages of relatively small particle size, excellent dispersity, efficient flame retardance, high thermal stability and excellent processability.

The invention discloses a method for improving the starch digestibility inhibition effect of a spray drying method by using high amylose, and belongs to the technical field of food processing. According to the invention, highland barley glutelin, low-amylose-content corn starch, normal-amylose-content corn starch and high-amylose-content corn starch are selected, and a spray drying technology is used to simulate an embedding structure of protein in a natural grain structure on the surface of starch particles. The method comprises the following steps: dissolving protein in a 0.02% NaOH solution, then adding corn starch with different amylose contents, stirring for 30 minutes, then carrying out spray drying treatment, controlling the addition amount of the protein to be 10% of the total mass of the starch, setting the inlet temperature of a spray dryer to be 170 DEG C, setting the outlet temperature to be 80 DEG C, and controlling the feeding speed of a peristaltic pump to be 35 mL / min; the appearance of the prepared starch sample is similar to the spatial structure in highland barley grains, and the digestibility of the highland barley grains is reduced.

The preparation method of the yellowing-resistant nylon particle composite material comprises the following steps: S1, weighing 100 parts by weight of nylon, and adding the nylon into a reaction kettle; s2, adding 2, 2, 2-trifluoroethanol as a solvent into the reaction kettle, and stirring to form a uniform nylon dissolving solution; s3, conveying the nylon dissolving solution into a spray dryer through a peristaltic pump, and performing atomization, drying and powder collection under the protection of nitrogen; s4, placing the powder in a vacuum drying oven, and drying at 25 DEG C for 3 hours to obtain nylon powder; s5, mixing the nylon powder with the following raw materials in parts by weight: 1-2 parts of an ultraviolet light absorber, 1-2 parts of a hindered phenol antioxidant, 2-4 parts of adipic acid, 0.5-1.5 parts of sebacic acid, 0.1-0.5 part of dicumyl peroxide and 8-10 parts of silane coupling agent modified mica powder; and S6, carrying out melt blending on the mixture obtained in the step S5 in a twin-screw extruder to obtain the yellowing-resistant nylon particle composite material.

The utility model relates to a kind of skin-friendly powder production technology field, disclose a kind of drying device for skin-friendly powder production, including spray dryer main part and the air inlet pipe being set in the air inlet input end of spray dryer main part, the top of the spray dryer main part is fixedly connected with exhaust pipe, the inside fixed connection of the exhaust pipe has heat exchange cylinder, the inside equidistance longitudinal opening of the heat exchange cylinder has through groove one. The utility model is equipped with heat exchange cylinder in exhaust pipe, by high-temperature steam and cooling liquid heat exchange, by circulating water pump let heating cooling liquid heat exchange block for air inlet pipe heat supply, realize air preheating, recover steam waste heat, reduce energy consumption, reduce high-temperature high-humidity gas emission, guarantee production environment stability, adopt metal copper to improve heat exchange efficiency, spiral slot prolongs path, annular collection box exhausts condensate, sealing assembly normal sealing, negative pressure opening when air inlet, filter screen filters air, spring helps reset, improve practicality and reliability.

A preparation method for a rosemary leaf extract rich in a lactose matrine molecular machine. The method uses a lactose matrine molecular machine-coupled microwave-assisted extraction process to enable efficient and environmentally friendly extraction of polyphenol compounds including rosmarinic acid from rosemary leaves. The ability of the lactose matrine molecular machine to selectively extract effective compounds is verified. A new rosemary leaf powder is added in the same solid-liquid ratio to verify the reusability of the lactose matrine molecular machine, maximizing the enrichment of polyphenol compounds including rosmarinic acid. Finally, the extract obtained by subjecting fresh rosemary leaves to repeated extraction processes is heated and passed through a spray dryer to form spherical particles of co-spray drying of active substances such as the lactose matrine molecular machine, plant cellulose, and polyphenol compounds. The spherical particles can stably exist and relieve inflammation, promote the proliferation and migration of hair papillary cells, regulate the periodic circulation of hair follicles, and promote hair growth.

The embodiment of the invention provides a method for calculating the tower diameter and the tower height of a desulfurization wastewater rotary spray drying tower, which comprises the following steps of: determining parameters of a rotary atomizer and characteristic parameters of wastewater, and calculating the initial particle size and the maximum particle size of atomized liquid drops by combining empirical parameters; the droplet evaporation process is divided into three stages, the time needed by droplet evaporation in each stage is calculated, an evaporation time correction coefficient is introduced after summation, and the actual total evaporation time is obtained; according to the initial velocity of the liquid drops escaping from the rotary atomizer, the horizontal radial movement of the liquid drops in the tower is divided into different flow regime areas, the movement distances of the liquid drops in all the flow regime areas are calculated, and the required tower diameter is obtained through summation calculation; the settling velocity of the liquid drops during constant-speed movement is solved according to gas-liquid two-phase flow characteristic parameters, and the tower height is solved based on the criterion that the retention time of the wastewater liquid drops in the tower body is longer than the evaporation time of the wastewater liquid drops. According to the method, the design precision is improved, and the problem of unreasonable tower body size design is solved.

The present invention relates to a spray dryer device (200) with a vessel (202). A spray nozzle (208) is arranged in the vessel (202) for forming a stream of liquid droplets (141) from a liquid material (140). Heated gas is supplied to the vessel (202) to, from the stream of liquid droplets (141), form a particulate material (150) by drying the liquid droplets (141). The device (200) includes a temperature sensor arrangement (120) with spatially distributed temperature sensing elements (122) that sense a spatial temperature distribution at an exterior wall (204) of the vessel (202). A processing device (130) acquires a time series of these temperature distributions and analyzes the time series to determine if fouling (152) of the particulate material (150) has occurred at an inside of the exterior wall (204). If fouling has occurred, the processing device (130) generates a signal indicating a fouling condition within the vessel (202). A method (300) of monitoring a spray dryer device (200) is also disclosed.

The invention relates to the technical field of milk powder production, in particular to a high-activity nutritional milk powder production method based on wet process optimization, which comprises the following steps: S1, adding raw materials into a vacuum mixer according to the following sequence, and carrying out vacuum high-speed hydration: adding protein raw materials in batches, carrying out vacuum mixing at 2960r / min, and carrying out hydration for 10min, adding the carbohydrate raw materials and continuously mixing until the materials are uniformly mixed; s2, the mixed solution is fed into a vacuum low-temperature concentration device to be concentrated, the vacuum degree in the concentration process is 0.09-0.06 MPa, the concentration temperature is smaller than or equal to 75 DEG C, and the concentration end point is controlled through an online refractometer so that the solid content can range from 42% to 46%; and S3, drying the concentrated milk in a spray dryer. According to the method disclosed by the invention, through an accurate feeding sequence of'first hydration of protein and later feeding of sugar 'and vacuum high-speed shearing and mixing, the influence on hydration due to the fact that the protein is occupied by sugar molecules is reduced, and the agglomeration and white spot defect rate after drying is reduced.

The utility model discloses a kind of efficient spray drying machine, including rack and air guide component, rack is equipped with the conveying belt for conveying workpiece, the top of conveying belt is equipped with heating assembly, for the paint film on the surface of workpiece is heated and dried;Air guide component includes air scoop and the first fan being arranged at the air inlet of air scoop, air scoop is arranged at the feed end of conveying belt, and the air outlet of air scoop is arranged along the conveying direction of conveying belt;Wherein, the first fan is used to suck external air into air scoop, and is guided to the surface of workpiece on conveying belt by air scoop effect, to realize the auxiliary cooling and heat dissipation of workpiece in workpiece conveying process.The utility model efficient spray drying machine, using the first fan to suck external air into air scoop and directional guide to the surface of workpiece on conveying belt, so that workpiece can be effectively airflow effect before entering heating drying area, and then realize the auxiliary cooling and heat dissipation of workpiece in conveying and drying process simultaneously.

The invention discloses a method for killing bovine herpesvirus by sodium chloride aerosol. The method comprises the following steps: (1) preparing sodium chloride aerosol of which the average particle size is 800nm and the particle size distribution is between 500nm and 8mu m, in the specific preparation process, respectively introducing a saturated sodium chloride aqueous solution and absolute ethyl alcohol into dry airflow of a spray dryer according to a volume ratio of 1: 1, and drying by the spray dryer to prepare the sodium chloride aerosol; and (2) the prepared sodium chloride aerosol is used as a bovine herpes virus killing agent to kill bovine herpes viruses, and in the virus killing process, the dosage is 10-60 mg, and the killing time is 10-30 s. The sodium chloride aerosol has the advantages that the sodium chloride aerosol has special antivirus efficacy in a specific dosage and time range, a high-concentration sodium chloride solution can dehydrate bacterial cells and destroy cell membrane structures of the bacterial cells through osmotic pressure difference to cause growth inhibition or death of bacteria, and especially 100% of bovine herpes viruses (BHV-1) can be killed in a very short time with a small dosage of sodium chloride aerosol.

The invention relates to the technical field of human body dietary nutrient dietary fibers. The average molecular weight of the apple gum is 50,000-250,000 Daltons, the average molecular weight of the apple gum can reach 160-50,000 Daltons after being subjected to low molecularization, the apple gum acts in human cells and can prevent toxic cation poisoning, and main methods for preparing oligosaccharide from pectin at present are divided into a physical method, a chemical method and a biological enzyme method. The method comprises the following steps: 1, processing apple peel residues into powder; the method comprises the following steps: heating and drying apple pomace, continuously taking 20-50% of the pomace, mixing the pomace with undried apple juice to 100% by weight, then drying by using a dryer, and repeating the processes of drying and mixing the pomace. And 2, carrying out secondary heating. And heating the powdered apple fibers at 120 DEG C for 30 minutes. And 3, spray drying. The powder is sprayed and dried at a certain rate through a spray dryer according to a ratio of about 3: 1 to about 2: 1, so that microstructures such as powder smell, color, roughness and the like are improved.

This invention relates to the field of spray drying technology, and more particularly to a spray dryer for enzymatic powdered oil processing. The dryer includes a shell, with a raw material box for storing powdered oil materials fixedly connected to the side wall of the shell. A conduit is fixedly connected to the top of the raw material box, and a pump body is fixedly connected to the top end of the conduit. A spray drying mechanism is located at the center of the top of the shell, and the end of the pump body's suction pipe extends into the interior of the spray drying mechanism. This invention utilizes a flexible inner cylinder within the drying tower to vibrate and dislodge materials adhering to the inner wall. Simultaneously, the centrifugal force generated by the high-speed rotation of the conical column drives the spring rod and movable push rod to continuously rotate along the inner wall of the annular limiting groove, achieving a squeezing and collision effect between the movable push rod and the elastic limiting block. This effectively dislodges the materials adhering to the inner wall, allowing the materials to fully contact the hot air for drying, improving the drying effect and ensuring the quality of the prepared materials.