1121results about "Evaporation by spraying" patented technology

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention discloses a spray drying device for boron carbide production, the spray drying device comprises a spray drying tower, a hot blast stove, a cyclone separator and a system controller, an atomizer and an online detection module are arranged in the spray drying tower, and the online detection module is used for monitoring temperature parameters in the spray drying process; comprising a first temperature sensor, a second temperature sensor and a temperature signal processing unit, the temperature signal processing unit adopts a multi-stage filtering and error compensation technology, noise and interference are effectively suppressed, and the accuracy of detection data is ensured. The air inlet temperature and the air outlet temperature are monitored in real time through the online detection module, the fuzzy-PID control algorithm is combined, the temperature control precision and the response speed are remarkably improved, and temperature fluctuation is reduced. The device dynamically adjusts the heating power of the hot blast stove according to real-time working conditions, the energy utilization efficiency is optimized, and the energy consumption is reduced.

The invention discloses an evaporative crystallization device for high-purity anhydrous sodium sulphate, and relates to the technical field of anhydrous sodium sulphate processing, and the evaporative crystallization device is characterized by comprising an evaporation tank and a spraying and scraping mechanism, the spraying and scraping mechanism is arranged on the evaporation tank and comprises a spraying pipe, a spraying head, a vertical shaft, a cross arm, a scraping plate and a driving assembly, the spraying pipe is rotationally connected with the evaporation tank, the spraying head is installed at the end, located in the evaporation tank, of the spraying pipe, a spraying opening of the spraying head faces the inner side wall of the evaporation tank, and the spraying pipe is fixedly connected with the vertical shaft; the vertical shaft is fixedly connected with a plurality of cross arms, the cross arms are fixedly connected with a scraper blade, and the scraper blade is in friction contact with the inner wall of the evaporation tank; the driving assembly drives the spraying pipe and the spraying head to rotate, when a solution sprayed by the spraying head makes contact with the high-temperature inner side wall of the evaporation tank, water in the solution can be rapidly evaporated, and therefore separation of sodium sulfate crystals in the solution is accelerated, and the evaporation and crystallization efficiency is effectively improved.

The invention relates to a method for recovering mixed salts (mainly containing calcium chloride, sodium chloride and potassium chloride) from a household garbage incineration fly ash leaching solution, and particularly provides two separation technical schemes. The traditional separation method generally needs to use a large amount of decalcifying agent, so that the cost is high, calcium chloride cannot be effectively recycled, and the problem of resource waste exists. In order to solve the problems, the invention selectively dissolves calcium chloride in the mixed salt by adopting a specific organic solvent (such as ethanol or methanol) and utilizing the characteristics that the solubility of calcium chloride in the solvent is high, the solubility of sodium chloride and potassium chloride is low, and the boiling point is relatively low. And a calcium chloride product can be recovered after solvent evaporation. Furthermore, the residual mixed salt is further washed using the specific organic solvent to remove entrained calcium chloride, thereby obtaining a mixed salt containing predominantly sodium chloride and potassium chloride. According to the technical scheme 1, the mixed salt subjected to separation and calcium removal is subjected to dissolution treatment under the high-temperature condition, potassium chloride is dissolved, the particle size of sodium chloride crystals is promoted to be increased, the sodium chloride crystals are obtained through solid-liquid separation, and then mother liquor is cooled and crystallized to recover potassium chloride. According to the technical scheme 2, the mixed salt subjected to separation and calcium removal is subjected to aging treatment so as to promote particle size increase of sodium chloride and potassium chloride crystals, then the aged mixed salt is separated by adopting a flotation method, and sodium chloride and potassium chloride products are recycled respectively.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention discloses a material distribution system of a drying machine, and belongs to the technical field of liquid drying, the material distribution system comprises a rack group and a material distribution system, the rack group is in bolted connection with two main shaft groups, the outer side parts of the two main shaft groups are respectively provided with a pipeline function processing group, a scraper blanking group is arranged between the two main shaft groups, and the rack group is in bolted connection with a spray pipe scraper plate group. A protective cover metal plate set is arranged on the outer side of the rack set, the spray pipe scraper set comprises four sets of throttle valve spray pipe fixing seats fixedly installed on the rack set through bolts, the four sets of throttle valve spray pipe fixing seats are connected with the rack set through hexagon socket cap screws, and a set of speed regulating valves is fixedly installed on each set of throttle valve spray pipe fixing seats through bolts. The front end of each set of speed regulating valve is connected with a material distributing pipe through a pipe thread reducer union, a liquid nozzle is arranged at the end of each material distributing pipe, finally atomized liquid is sprayed out through the liquid nozzles, it is ensured that the device can dry and solidify different kinds of liquid in a proper state, and high-quality powder is obtained.

Fluorinated coupling agents and polymerizable compositions including such fluorinated coupling agents and at least one free-radically polymerizable monomer, oligomer, or mixture thereof. Multilayer films including a substrate and at least a first layer overlaying a surface of the substrate also are described, in which the at least first layer includes a (co)polymer obtained by polymerizing the foregoing polymerizable compositions. Processes for making a multilayer film using the polymerizable composition also are taught. Articles including the multilayer film also are disclosed, in which the article preferably is selected from a photovoltaic device, a display device, a solid-state lighting device, a sensor, a medical or biological diagnostic device, an electrochromic device, light control device, or a combination thereof.

The invention relates to the technical field of preparation of anhydrous calcium hydrogen phosphate, and particularly discloses a spray drying preparation method of anhydrous calcium hydrogen phosphate, which comprises the following steps: S1, slurry preparation, S2, spray drying, S3, vacuum drying, S4, screening, and S5, weighing and packaging. By optimizing the raw material ratio and controlling the pH value, the method can effectively remove impurities, reduce the generation of byproducts, improve the purity of the final product, and meet the quality requirements in the fields of food, medicine, chemical industry and the like; the spray drying technology can accurately control the size of liquid drops, so that the final product particles are uniformly distributed, the problems of agglomeration and caking are avoided, the fluidity of the powder is improved, subsequent processing and storage are facilitated, and compared with a traditional drying mode, the method can more effectively reduce residual moisture of the product, reduce the risk of wetting and caking, improve the storage stability and prolong the shelf life of the product; anhydrous calcium hydrogen phosphate with different particle size distributions can be obtained by adjusting spray drying and screening parameters, and the applicability of the product is improved.

There is disclosed a portable direct solar desalination system, comprising a solar receiver and evaporator unit comprising inlet and outlet ports for incoming and outgoing water and air; an ultrasonic atomizer unit positioned within the solar receiver and evaporator unit for generating atomized droplets inside the solar receiver and evaporator unit; wherein air flows into the solar receiver and evaporator unit via the inlet port, thereby carrying the atomized droplets through the solar receiver and evaporator unit, wherein entrained droplets of the air-droplet mixture are exposed to solar radiations falling on the solar receiver and evaporator unit, which enables the atomized droplets to directly capture the incident solar radiations, leading to droplets evaporation, thereby producing freshwater. Also disclosed is a process of solar desalination comprising directly capturing solar energy by atomized water droplets in a solar evaporator.

The present application discloses a spraying device for the production of anhydrous calcium hydrogen phosphate, belonging to the technical field of spray drying, which includes a power structure, a high-pressure spraying structure, and an outer spinning disk; the high-pressure spraying structure includes an annular housing member connected to the power structure; pressure spray nozzles are provided on the side wall of the annular housing member; and an elastic packing component is provided in the inner cavity of the annular housing member. When the pumping of the calcium hydrogen phosphate dihydrate slurry into the annular housing member is stopped or interrupted, the hydraulic pressure applied to the piston assembly gradually decreases, so that the piston assembly gradually moves upward under its own elastic force. During this process, the plug column part in the elastic packing component is continuously driven to insert into the pressure spray nozzle again and push out the residual liquid remaining in the pressure spray nozzle. When the slurry is pumped into the annular housing member again, during the downward movement of the piston assembly under the action of hydraulic pressure, the plug column part disengages from the pressure spray nozzle again under the action of elastic force, so that the pressure spray nozzle is exposed again.

The invention discloses a high-load starch-based steady-state morinda citrifolia enzyme spray-dried microcapsule and a preparation method thereof, belongs to the technical field of food spray drying, and provides the high-load starch-based steady-state morinda citrifolia enzyme spray-dried microcapsule which comprises morinda citrifolia enzyme and modified starch N-zorbit M / porous starch. The preparation method comprises the following steps: stirring and mixing the morinda citrifolia enzyme and the wall material according to different proportions to obtain a morinda citrifolia enzyme and wall material mixed solution; and carrying out spray drying on the morinda citrifolia enzyme mixed solution to obtain the high-load starch-based morinda citrifolia enzyme spray-dried microcapsule. Modified starch N-zorbit M / porous starch is used as a wall material to prepare the high-load morinda citrifolia enzyme spray-dried microcapsule, so that the volatile unpleasant odor of morinda citrifolia enzyme is reduced, and the total phenol content and the oxidation resistance of the morinda citrifolia enzyme are improved.

The utility model provides a sodium ion battery positive electrode material processing device, and belongs to the technical field of motor active material manufacturing. Comprising a dispersing tank, a cavity and a material collecting bin, the dispersing tank is connected with a material conveying pipe, a spray head is arranged at the tail end of the material conveying pipe and located in the cavity, the cavity is connected with a vacuumizing pipe, a crawler belt is arranged below the spray head, a heating plate and a cooling plate are arranged in a crawler belt loop, the heating plate is located in the crawler belt loop, and the cooling plate is arranged close to the tail end of the crawler belt. The outlet of the cavity is connected with a collecting bin. The device is used for raw material treatment of the battery positive electrode material, and has the advantages of high stability, uniform heating, stable material performance, capability of realizing an atomization granulation effect, easiness in industrialization and the like.

The invention relates to the technical field of drying equipment, and discloses a multifunctional airflow spray type drying system which comprises a drying tower, and a liquid cavity, a drying cavity and a dust cavity are formed in the drying tower and arranged from top to bottom; the blocking frame is arranged in the drying cavity, filter cloth is arranged on the blocking frame, a ventilation opening is formed in the inner wall of the drying cavity, and the ventilation opening is located above the blocking frame; the intermittent operation of the release part avoids dust backflow and agglomeration by stopping the atomization nozzle and hot air output, so that the particle size uniformity and flowability of the powder are improved. The liquid atomization effect is improved through the preheating function, it is ensured that spraying is uniform, and uneven distribution is prevented. According to the overall design, all links are optimized, the risk that powder makes contact with liquid is reduced, and the powder quality and the production efficiency are improved.

The utility model discloses an integrated device for preparing flocculant powder from fly ash, which comprises an extraction chamber, an aging reaction chamber, a rotary spray drying chamber and a product collecting chamber, a discharge port at the bottom of the extraction chamber is connected with the aging reaction chamber through a pipeline, the bottom of the aging reaction chamber is connected with a spray gun through a pipeline, the spray gun extends into the rotary spray drying chamber, and the rotary spray drying chamber is connected with the product collecting chamber through a pipeline. The product collecting chamber is located under a discharging port of the rotary spray drying chamber. An electric heating layer is arranged at the bottom of the extraction chamber; a filter is arranged at a discharge hole in the bottom of the extraction chamber. The device is an integrated continuous production device, has experiment and detection functions, is simple to operate and is suitable for industrial production.

The utility model discloses a subsection cooling spray type down-flow drying tower which comprises a rotational flow tower body, the rotational flow tower body comprises a cylindrical part and a water cooling cone, the cylindrical part comprises a cylindrical inner container and a circulating air cooling jacket, the circulating air cooling jacket surrounds the cylindrical inner container, and the water cooling cone is arranged in the cylindrical inner container. The circulating air cooling jacket is arranged in the cylindrical inner container, an air cooling flow channel is reserved between the circulating air cooling jacket and the cylindrical inner container, the cylindrical part is vertically arranged, the upper end of the cylindrical part is connected with a material connector and a hot air connector, the lower end of the cylindrical part is fixedly connected with the water cooling cone, and the tip end of the water cooling cone faces downwards. The water cooling cone comprises a conical inner container and a conical clamping sleeve, and a water cooling flow channel is reserved between the conical inner container and the conical clamping sleeve. Atomized materials are cooled through the air cooling flow channel and the water cooling flow channel, sectional type cooling of air cooling and water cooling is formed, the materials are cooled step by step in the descending process, and due to the relative stability of a water medium, the cooling temperature of the materials can be accurately controlled.

The utility model provides spray drying equipment and a battery production system.The spray drying equipment comprises a drying tower, a double-fluid nozzle, an ultrasonic generator and a drying device, a containing cavity is formed in the drying tower, the double-fluid nozzle is connected to the drying tower, and the double-fluid nozzle is used for atomizing fluid materials through compressed gas and spraying the fluid materials into the containing cavity; the ultrasonic generator is arranged at a nozzle opening of the double-fluid nozzle, and the drying device is used for introducing dry gas into the containing cavity so as to dry the fluid materials into powder. In the structure, the ultrasonic generator is arranged at the nozzle of the double-fluid nozzle for spraying the atomized fluid material into the accommodating cavity, so that the particle size of fog drops can be further reduced, the particle size of prepared powder is relatively small, and residual materials at the nozzle of the double-fluid nozzle can be removed, so that the double-fluid nozzle can spray smoothly; the process of preparing the powder is stable, and the quality of the prepared material is improved.

The invention relates to the technical field of film pasting agent preparation, and discloses a 3T film pasting agent preparation device for drilling fluid and a preparation method.The 3T film pasting agent preparation device comprises a drying box, a flow injection pipe is arranged on the upper portion of the drying box, an inner cylinder is arranged in the drying box, an atomization nozzle is arranged at the end, stretching into the inner cylinder, of the flow injection pipe, and a grinding assembly is arranged on the lower portion of the inner cylinder; a vibration assembly is arranged outside the grinding assembly, the upper portion of the base is rotationally connected with a hollow cylinder, shaft rods are distributed on the periphery of the hollow cylinder in an annular array mode, and grinding wheels are distributed on the outer surfaces of the shaft rods in a linear array mode in the vertical axis direction of the shaft rods. The rolling wheel on the outer surface of the shaft rod is used for rolling the granular 3T film pasting agent in the sliding process in the groove, and meanwhile, the shaft rod is matched with rotation, so that the rolling effect of the rolling wheel on the 3T film pasting agent is improved, the granular 3T film pasting agent is eliminated, it is guaranteed that the 3T film pasting agent becomes powder to be stored, and the situation that the interior of the 3T film pasting agent is not thoroughly dried due to the granular state is avoided.

The silicon carbide micro-powder anti-agglomeration treatment device comprises a tower body, a stirring cavity, an isolation bin and a spray drying cavity, the stirring cavity, the isolation bin and the spray drying cavity are sequentially arranged in the axis direction of the tower body, and the stirring cavity communicates with the spray drying cavity through a flow guide cavity penetrating through the isolation bin; the stirring device is arranged in the stirring cavity and comprises a driving motor arranged at the top of the tower; the rotating shaft is connected with a driving motor through a coupler, penetrates through the stirring cavity and the flow guide cavity and extends to the spray drying cavity; the stirring assembly is connected with the rotating shaft; the centrifugal spraying device is connected with the end of the rotating shaft. The stirring device and the spray drying tower are integrated, the rotating shaft is driven by the driving motor to rotate, the part, in the stirring cavity, of the rotating shaft is provided with the stirring blades, the part, extending into the spray drying cavity, of the rotating shaft is provided with the centrifugal spraying device, the rotating shaft is driven by the driving motor to rotate, and stirring and centrifugal spraying can be achieved at the same time; the problem that high-solid-content slurry is difficult to convey in the prior art is solved.

The utility model provides a uniform air inlet device of a spray drying tower for preparing compound amino acid powder, which relates to the technical field of spray drying towers and comprises a tower body, a rotating rod fixedly penetrates through the top of the tower body through a bearing, a gear is fixedly connected to the position, close to the top, of the outer surface of the rotating rod, and a rotating joint is fixed to the top of the rotating rod. The top of the rotary connector is fixedly connected with a ventilation pipe, and the bottom of the tower body is fixedly connected with an electric push rod. According to the utility model, after hot air enters the tower body, under the cooperation of the electric push rod, the connecting block, the tooth row, the rotating shaft, the rotating joint, the supporting rod, the sliding seat and the fixed seat, the rotating rod can stably rotate back and forth in the tower body, so that the rotating rod rotating back and forth and the air outlet hole can continuously change the air inflow direction; therefore, the airflow is more uniformly distributed in the tower, the concentration or dead angle phenomenon of local airflow is reduced, and the uniformity and drying efficiency of the drying process are ensured.

The present invention proposes a hot air distribution device and a spray drying tower and their applications. In the hot air distribution device, the corresponding positions of the first spoiler, the second spoiler, the uniform distribution plate, and the distribution plate, which are sequentially arranged along a first specified direction, are respectively provided with at least one through hole for allowing the atomizing sleeve of the atomizer to pass through; the spoiler blades of the first spoiler and the second spoiler are arranged perpendicularly and staggered to each other in the projections perpendicular to the first specified direction; the uniform distribution plate includes a first dense opening area and a first sparse opening area, both of which have first vertical through holes; the distribution plate includes a second dense opening area with inclined through holes and a second sparse opening area with second vertical through holes, and the opening direction of the inclined through holes is toward the center line of the through holes. In order to achieve both uniformity of airflow and concentrated distribution of airflow, the inclined through holes are provided on the distribution plate, which greatly improves the drying rate of droplets, reduces the phenomenon of material particles sticking to the wall, and improves the yield of the final product.

The utility model relates to the field of spray drying devices, in particular to a spray drying device for strengthening interphase heat transfer, which comprises a spray drying tower body, an upper section tower body, a middle section tower body, a lower section tower body, a flue gas distribution plate A, a flue gas distribution plate B and a spray gun, an upper section tower body with a conical structure is welded at the upper end of the middle section tower body; a lower section tower body with a conical structure is welded at the lower end of the middle section tower body; the middle-section tower body adopts a cylindrical structure; the utility model provides an innovative flue gas distribution plate trepanning form and a spray gun arrangement form, and the trepanning form of the flue gas distribution plate is adjusted, so that the trepanning circle center position of the large hole in the flue gas distribution plate is overlapped with the axis of the spray gun; high-temperature flue gas is concentrated near the nozzles after passing through the distribution plate and can completely cover liquid drops sprayed by the nozzles, so that the heat exchange efficiency between the high-temperature flue gas and cold slurry is greatly improved under the condition of ensuring reasonable pressure drop in the tower, and meanwhile, large-area adhesion of the slurry in a wet particle state is avoided.

A moisture content control method during an airflow drying process includes: comparing a reference moisture content of a product with a real-time moisture content of a material to obtain a first error, where the reference moisture content is a moisture content indicator of the product; obtaining a temperature fine-tuning value based on the first error; predicting a compensation temperature based on real-time detected intake and exhaust temperatures, and the real-time moisture content of the material, which is a theoretical exhaust temperature predicted in advance based on real-time operating conditions; adding the temperature fine-tuning value and the compensation temperature to obtain a reference temperature; adjusting a rotation speed of a feeding mechanism based the reference temperature to regulate the real-time moisture content; and repeating the above five steps. This moisture content control method can overcome the time lag in the airflow drying process and improve the accuracy of moisture content control. A control system for executing the moisture content control method is also provided.

The invention relates to the technical field of polyphenol extraction, and provides a green pear polyphenol extraction method which comprises the following steps: performing steam explosion treatment on pear residue dry powder, and then infiltrating and activating by using an aqueous solution containing L-malic acid; adding betaine and D-gluconic acid into the first part of ultrapure water to prepare a deep eutectic solvent; mixing the eutectic solvent with a second part of ultrapure water to prepare a composite extracting agent; putting the infiltrated and activated raw materials and a composite extracting agent into an extraction device to obtain an extracting solution; carrying out solid-liquid separation on the extracting solution to obtain a clear solution; and adsorbing the clarified liquid through macroporous adsorption resin, then eluting with an ethanol water solution, collecting polyphenol-rich eluent, and carrying out spray drying to obtain the pear polyphenol extract. According to the technical scheme, the quality of an extracted product is improved, and polyphenol oxidation and thermal degradation are reduced; meanwhile, the product storage stability is improved, the phenomena of wall sticking and caking of powder are reduced, and the product yield and physical properties are guaranteed.

The present disclosure relates to a process for electrostatic spray drying of a living microorganism with a specific surface charge. using electrostatic charge provided by a high voltage source, wherein said electrostatic charge is the same as the surface charge of the microorganism.

The present application relates to a drying apparatus and a battery manufacturing system including a drying tower and a cooling mechanism. [Solution] The drying tower is provided with a cooling mechanism, and the cooling mechanism cools and lowers the temperature of the inner wall of the drying tower so that the temperature of the inner wall of the drying tower is controlled within a required temperature range. When spray drying is performed in the drying tower in this manner, after the material comes into contact with the inner wall of the drying tower, the high inner wall temperature prevents fusion, and the probability of the material hanging on the wall is reduced, thereby improving the productivity and granulation quality of the material.

The invention discloses a spraying device based on anhydrous calcium hydrogen phosphate production, and belongs to the technical field of spray drying. The spraying device comprises a power structure, a high-pressure eruption structure and an outer throwing disc; the high-pressure eruption structure comprises an annular housing piece connected to the power structure; a pressure nozzle is formed in the side wall of the annular housing piece; an elastic port filling assembly is arranged in an inner cavity of the annular cover shell piece. When the pumping of the calcium hydrogen phosphate dihydrate slurry into the annular housing piece is stopped or interrupted, the hydraulic pressure applied to the piston assembly is gradually reduced, so that the piston assembly gradually moves upwards under the action of self elasticity; the piston assembly continuously drives a plunger part in the elastic filling opening assembly to be inserted into the pressure nozzle again and ejects residual liquid remaining in the pressure nozzle out, after the slurry is pumped into the annular housing piece again, in the process that the piston assembly moves downwards under the action of hydraulic pressure, the plunger part is separated out of the pressure nozzle again under the action of elastic force, and the residual liquid in the pressure nozzle is ejected out. And the pressure nozzle is exposed again.

The present invention belongs to the field of toluene diisocyanate separation and recovery, and specifically relates to a TDI distillation residue separation and recovery device and a TDI distillation residue separation and recovery method. The method comprises: a) passing the TDI distillation residue into a dryer for drying to obtain a high-temperature TDI vapor flow and flowing solid tar particles; the high-temperature TDI vapor flow is then passed into a novel gas chamber for separation; b) the separated high-temperature TDI vapor flow obtained in step a is conveyed through a gas phase conveying pipe into a spray tower for rapid cooling to obtain a gaseous vapor flow and a liquid material flow; c) a portion of the liquid material flow obtained in step b is cooled and circulated to the spray tower, and the remaining portion is conveyed downstream as a product. The method of the present invention not only ensures a high yield of the resulting TDI product, but also solves the problem of clogging of separation and refining-related equipment in the entire process, such as the drying device.

The invention relates to the field of plant extracts and daily chemicals, in particular to preparation and application of a penthorum chinense pursh leaf and stem extract with acne removing and oxidation resisting effects. The preparation method of the extract comprises the following steps: taking a penthorum chinense leaf and stem dry product, carrying out heating extraction or ultrasonic crushing extraction by taking water as a solvent, carrying out purification and impurity removal or filtration and impurity removal by using a chitosan quaternary ammonium salt-sodium alginate combined biological flocculation method, taking supernate, carrying out vacuum concentration, and carrying out spray drying, so as to obtain the penthorum chinense leaf and stem extract. The content of the quercitrin in the index component is more than or equal to 16mg / g. The effect of the invention is extracted from the characteristic medicinal and edible plant penthorum chinense pursh in China, is high in safety, has obvious acne-removing and anti-oxidation effects, and is a novel functional cosmetic plant raw material with excellent application prospect.

The utility model relates to the technical field of spray drying towers, and discloses a spray drying tower convenient to clean, which comprises a drying tower body, the center of the bottom of the drying tower body is fixedly communicated with a discharge pipe, and a cleaning and scraping assembly comprises a rotating shaft rotationally connected in the drying tower body. Hollow pipes are symmetrically and fixedly connected to the outer portion of the rotating shaft at equal intervals in the circumferential direction, limiting plates are movably connected to the interiors of the hollow pipes, cross rods are fixedly connected to one ends of the limiting plates, the tail ends of the cross rods extend to the outer portions of the hollow pipes, and springs are additionally arranged in the hollow pipes; the tail ends of the two sets of transverse rods on the same side are fixedly connected with the same vertical scraping plate, and the bottom end of the vertical scraping plate is fixedly connected with an inclined scraping plate. According to the drying tower, the problem that the cleaning effect on the interior of the drying tower is reduced due to the fact that external dust and impurities are prone to being attached to the cleaning assembly when the cleaning assembly is idle and the cleaning assembly is prone to being stained with materials during cleaning is effectively solved.

The invention belongs to the technical field of chemical product preparation, and provides a production method of instant expanded monopotassium phosphate. The method comprises the following steps: (1) neutralization: neutralizing a potassium hydroxide solution and a phosphoric acid solution to prepare monopotassium phosphate slurry; (2) spray drying: performing sectional drying on the monopotassium phosphate slurry in a vertical high-tower spray drying tower, wherein the vertical high-tower spray drying tower is set into a top high-temperature section, a middle shaping section and a bottom cooling section according to the length ratio from top to bottom, and high-temperature hot air is arranged at an inlet of the top high-temperature section; low-temperature hot air is supplemented into the joint of the middle shaping section and the top high-temperature section; separating, dedusting and recycling at an outlet of the bottom cooling section to obtain monopotassium phosphate primary product particles; and (3) cooling and screening to obtain a finished product. According to the production method, low-energy-consumption and high-efficiency production is realized through sectional type high tower spray drying, and the instant puffed monopotassium phosphate product with high puffing rate and high stability can be obtained.