498results 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 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 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.

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 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 invention discloses a monascus red pigment nano stabilized carrier constructed based on a hierarchical self-assembly strategy as well as a preparation method and application thereof, and belongs to the technical field of nano carriers. According to the invention, a beta-cyclodextrin-enzymolysis sodium caseinate-Arabic gum ternary supramolecular composite system is constructed, and efficient encapsulation, bitter taste shielding and stability improvement of pigment molecules are realized by virtue of a multi-stage self-assembly mechanism. According to the carrier, a hydrophobic core domain is constructed by virtue of an enzymolysis peptide fragment, bitter components are captured by virtue of an inclusion effect of beta-cyclodextrin, and the interface stability is enhanced by virtue of Arabic gum, so that a nano-scale delivery system with a clear structure and excellent performance is finally formed, and the photo-thermal stability and sensory quality of the pigment are remarkably improved; and the powder obtained by spray drying is good in flowability, easy to re-disperse and high in product applicability. The carrier is wide in raw material source, the preparation process is green and mild, large-scale amplification is easy, and the carrier has good application potential in the high-value-added fields such as high-end functional food, clarified beverages and pharmaceutical preparations.

The present invention relates to a gravitational vapor compressor (GVC) device comprising at least one vertical compression chamber (16) and a plurality of droplet spray generating nozzles (10) are arranged at the top thereof, which nozzles form a flow of droplets in the water vapor flow along a height h1 of the vertical shell (16). The speed of the droplets from the droplet beams (10) is adjusted along the height h1 to the terminal fall velocity in relation to a gas flow, the compression chamber (16) has a height h2 from which droplets fall at the same or similar terminal velocity inside a water vapor flow, which compresses the water vapor. The gravitational vapor compressor device further comprises a secondary vapor outlet duct (13).

The utility model provides a cleaning device and powder slurry spray drying equipment comprising the same, the powder slurry spray drying equipment comprises a drying tower, an atomizer is arranged in the drying tower, the cleaning device comprises a lifting mechanism, a cleaning nozzle and a water pipe, the water pipe is arranged in the drying tower, one end of the water pipe is provided with the cleaning nozzle, and the other end of the water pipe is provided with the atomizer. The cleaning nozzle is arranged between the atomizer and the inner wall of the drying tower body, the other end of the water pipe extends out of the top of the drying tower and is connected with the lifting mechanism, and the lifting mechanism is used for controlling the water pipe to move up and down in the height direction of the drying tower; the cleaning nozzle is a fan-shaped nozzle, a nozzle opening of the cleaning nozzle faces the top of the drying tower, and a spray head of the cleaning nozzle is arranged to rotate under the action of water pressure. And by arranging the cleaning device, the interior of the drying tower can be automatically cleaned through a cleaning nozzle, and the problems of low cleaning efficiency and high labor intensity caused by manual cleaning are avoided.

The utility model discloses a gasified hydrogen peroxide supply device which comprises an evaporator, a hydrogen peroxide supply pipeline, a sterile air supply pipeline for atomization and a sterile hot air supply pipeline for gasification. The hydrogen peroxide supply pipeline and the sterile air supply pipeline for atomization are connected with the mist input end of the evaporator, the sterile hot air supply pipeline for gasification is connected with the hot air input end of the evaporator, and the gasified hydrogen peroxide supply device further comprises a descaling pipeline. The hydrogen peroxide evaporation path is covered with the descaling agent conveying path, it is guaranteed that the descaling agent makes contact with all dirt, the dirt is removed along the original gasified hydrogen peroxide generation path, the heat conduction efficiency of the evaporator is maintained, and the gasification quality of the whole gasified hydrogen peroxide supply device is guaranteed.

The invention discloses a preparation method and a preparation system of high-dispersion silicon dioxide for tires in winter, and the preparation method comprises the following steps: S1, putting solid sodium silicate into a static pressure kettle, adding steam to pressurize to 0.8-1.0 MPa, and maintaining the pressure for 2 hours to obtain concentrated water glass; s2, adding water into the concentrated water glass to prepare a sodium silicate solution with the silicon dioxide content of 20-25wt%, standing in a storage tank for more than 10 days, and filtering; and S3, adding sucrose fatty acid ester and concentrated sulfuric acid with the mass concentration of 98% into the sodium silicate solution, and reacting for later use. The special silicon dioxide for the winter tire is high in dispersity, uniform in particle and good in surface structure and can endow the winter tire with more excellent comprehensive performance, and sucrose fatty acid ester is added as a reaction regulator, so that the product has more excellent structural performance.

The utility model relates to the technical field of washing powder production, in particular to a powder spraying tower structure for washing powder production, which comprises a tower kettle, a three-way connecting pipeline, a fan, an air booster pump, a compressed air spraying pipe, a flow guide part and a guide part, the three-way connecting pipeline is located at the bottom of the tower kettle, the fan is arranged on one side of the three-way connecting pipeline, the air booster pumps are arranged on the two sides of the exterior of the tower kettle, the air booster pump close to one side of the fan is higher than the air booster pump on the other side, and the compressed air spray pipes are arranged on output pipes of the air booster pumps. The output end of the compressed air spray pipe is arranged in the tower kettle, and the flow guide pieces are arranged on the two sides in the tower kettle and are close to the height of the flow guide piece on the other side of the bottom of the flow guide piece on one side of the fan. The washing powder drying device has the advantages of being simple in structure, reasonable in design, complete in functionality, capable of slowing down the descending speed of washing powder and capable of drying the washing powder more comprehensively and effectively.

The present application provides a kind of gasification fine slag dewatering drying recycling method and system, using the scheme of the present application, can carry out dewatering drying to high water content gasification fine slag and be used as fuel and be used as resource.The method comprises the following steps: 1) coal gasification black water is treated in black water treatment unit, and flash gas and the gasification fine slag to be treated are obtained;2) the gasification fine slag to be treated is sent into fine slag preheater and is preheated with heat medium;3) the preheated gasification fine slag is sent into drying device and exchanges heat with superheated steam, and dry gasification fine slag and secondary steam are obtained;4) secondary steam is treated by dust removal, and the obtained dust removal secondary steam is sent into fine slag preheater and used as the heat medium;5) the secondary steam output from fine slag preheater is superheated, and superheated steam is obtained;superheated steam is sent into drying device for the heat exchange;6) dry gasification fine slag is sent into combustion unit as fuel and used.

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.

The application relates to a concentration device for methoxyacetic acid preparation and relates to the technical field of methoxyacetic acid preparation, which comprises a concentration barrel, a spraying assembly, a collecting assembly, an evaporation assembly and a detection assembly. One side top of the concentration barrel is communicated with a liquid inlet pipe, the spraying assembly is arranged in the concentration barrel, the liquid inlet pipe is communicated with the spraying assembly, and the spraying assembly is used for spraying a solution needing to be concentrated into the concentration barrel. The collecting assembly is arranged at the bottom of the concentration barrel and is used for collecting the concentrated solution. A lead screw is fixedly arranged at the center of the bottom in the concentration barrel, the lead screw is a reciprocating lead screw, the lead screw is vertically arranged and coaxially arranged with the concentration barrel. A rotating block is spirally transmission-connected with the lead screw in the vertical direction. The evaporation assembly is used for contacting steam with the sprayed solution, so that the solvent in the solution is evaporated together. The detection assembly can assist in detecting the concentrated solution. The concentration device for methoxyacetic acid preparation can realize an efficient evaporation and concentration process.

This utility model relates to the field of drying tower technology, and more particularly to a waste gas treatment device for spray drying towers, comprising: an air inlet pipe; a primary filter box is provided on one side of the air inlet pipe, the inner cavity of the primary filter box is provided with a filter plate, a treatment box is provided on the side of the primary filter box away from the air inlet pipe, a water tank is provided on the top of the treatment box, a water pump is provided on one side of the water tank, a water collection pipe is provided on the top inner side of the treatment box, a connecting water pipe is provided on the outer ring of the water collection pipe, a nozzle is provided at the bottom of the connecting water pipe, a water outlet pipe is provided on the bottom front side of the treatment box, and a secondary filter box is provided on the side of the treatment box away from the primary filter box, the inner cavity of the secondary filter box is provided with an activated carbon plate. The waste gas undergoes primary filtration through the filter plate, the water pump is turned on to adsorb dust particles through water, and the gas is filtered again through the activated carbon plate, thus achieving better treatment of the waste gas through multiple processes.

The invention discloses a waste offset printing ink recovery treatment method and application, and belongs to the technical field of printing ink, the recovery treatment method comprises the following steps: mixing and stirring waste offset printing ink and n-hexane through pretreatment, and removing solid-phase slag through centrifugal separation to obtain a liquid phase; concentrating the liquid phase, recovering the solvent and reserving concentrated slurry; secondly, directionally dissolving the low-molecular resin and the high-molecular resin by butyl acetate and ethylene glycol diacetate respectively through two-stage counter-current extraction and centrifugal separation to obtain a low-molecular resin solution, a high-molecular resin solution and pure pigment slurry; mixing the two resin solutions, recovering the solvent through multi-tower rectification, and refining through short-path molecular distillation to obtain regenerated resin; and finally, performing ultrasonic purification, modification and spray drying on the pigment slurry to obtain the regenerated pigment. According to the waste offset printing ink recycling treatment method and application, an efficient and reliable solution is provided for recycling of waste offset printing ink.

The invention relates to a green process for extracting natural components of pericarpium citri reticulatae with water and application of the natural components in a beverage. The process comprises the following steps: crushing and drying a dried orange peel raw material; extracting with water at 105-125 DEG C under 0.8-1.5 MPa under a low-oxygen condition to obtain a first extracting solution and first-stage residues; the residues are extracted at the temperature of 130-150 DEG C and the pressure of 1.5-2.2 MPa, and a second extracting solution is obtained; treating the second extracting solution at the temperature of 145-165 DEG C and the pressure of 1.8-2.5 MPa to obtain a low-ester pectin component containing bound flavone; mixing the first extracting solution with the low-methoxyl pectin component, and homogenizing, so that the volatile oil component is dispersed in the water phase containing the low-methoxyl pectin component; and concentrating and / or drying the obtained dispersion to obtain the pericarpium citri reticulatae extract. The extract can be used as a natural flavor additive for beverages.

The utility model relates to an acid cherry fruit powder spray drying device, and belongs to the field of cherry fruit powder preparation, the acid cherry fruit powder spray drying device comprises an air supply system, an exhaust system and a drying tower, the drying tower comprises an outer tower body; an end cover is arranged at the upper end of the inner tower body, an atomizer is arranged in the center of the end cover, the end cover is connected with the top end of the outer tower body, the lower end of the inner tower body extends downwards to be arranged in the outer tower body, a gap is formed between the lower end of the inner tower body and the outer tower body, an air outlet cavity is formed in the end cover, and a first air outlet is formed in the position, corresponding to the gap, of the air outlet cavity. A second air outlet is formed in the position, corresponding to the interior of the inner tower body, of the air outlet cavity, an air inlet is formed in the side face, corresponding to the end cover, of the air outlet cavity, the air inlet is connected with an air supply system, the inner tower body and the outer tower body are detachably arranged, when powder adheres to the inner tower body, only the inner tower body needs to be detached independently for cleaning, overall detaching is not needed, and cleaning is convenient and fast.

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.

A Fresnel spot lens desalinization system includes a Fresnel spot lens (FSL) disposed above a heating element. The heating element has a collector plate and a rod portion; The FSL concentrates solar energy onto the collector plate. A condenser vessel is connected to the collector plate. The rod portion extends into the condenser vessel having a heat resistant exterior shell. The rod portion projects interiorly of the condenser vessel at a downward angle and includes a top portion that is connected to a flat head of the heating element. The flat head receives the solar energy generated from FSL The concentrated solar energy increases the temperature of the heating element inside the condenser vessel to vaporize the salt water to steam and transfer the steam into a condensing tube to condense the steam into pure water.

This invention belongs to the field of environmental filtration technology, and specifically relates to a silver powder collection and filtration device and method in the production of silver powder using a spray pyrolysis method. It includes a pulse-jet bag filter body, which is equipped with an inlet pipe, a suction unit, and a bag filter unit. The bag filter unit includes: a mounting plate fixed inside the pulse-jet bag filter body, on which several detachable filter bags are inserted; several sealing covers corresponding to the filter bags, which are detachably mounted on the top of the mounting plate; and a reversing pipe fixedly inserted through the side wall of the sealing covers. This invention can efficiently filter and collect silver powder, preventing silver powder leakage to ensure sufficient collection and preventing environmental pollution. It can also automatically alert and locate damaged filter bags for convenient subsequent maintenance, while reducing the frequency of pulse backflushing and adapting to existing equipment for cost reduction.

The invention belongs to the technical field of separation and extraction of natural products, and particularly relates to a process for extracting astaxanthin by using a deep eutectic solvent, which comprises the following steps: extracting an astaxanthin raw material and the deep eutectic solvent in an ultrasonic-pulsed electric field synergistic device according to a mass-volume ratio of 1: 15-1: 25 g / mL, and then purifying by using a modified macroporous resin column to obtain the astaxanthin. And finally, carrying out film concentration and spray drying to obtain an astaxanthin product. The deep eutectic solvent is prepared from the following components in parts by mass: 15-25 parts of a hydrogen bond acceptor, 35-55 parts of a hydrogen bond donor and 1-3 parts of a functionalized nano material, the functionalized nano material is silanization modified mesoporous silica. According to the method disclosed by the invention, efficient extraction, high product stability, low solvent residue and good environmental compatibility of astaxanthin are synchronously realized through a synergistic effect of a plurality of technical characteristics of functionalized nano material, ultrasonic-pulsed electric field synergistic extraction, modified macroporous resin purification, protective agent application and the like.

The utility model discloses a spray drying device for producing aluminum oxide granulated powder, which is arranged below an aluminum oxide granulated powder production device and comprises a drying tower used for drying the production of the aluminum oxide granulated powder, and the drying tower comprises a feeding cavity arranged on one side of the drying tower. Corrugated pipes are fixed to the two ends of the side, close to the drying tower, of the feeding cavity, and the side, away from the corrugated pipes, of the connecting pipeline is detachably installed on the side wall of the drying tower. When the feeding device is used, the corrugated pipe enables the feeding cavity to shake during use, a worker can regularly and longitudinally shake the feeding cavity relative to the base, dirt and the like deposited at the corner position in the feeding cavity can be cleaned, the probability of deposition in the feeding cavity is reduced, and the working efficiency is improved. Meanwhile, the shaken-off scale can be accumulated at the position of the external connecting pipe, and at the moment, the scale at the position of the external connecting pipe can be cleaned by disconnecting the external connecting pipe and the connecting object.

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.

The invention discloses a green methanol vaporization mixer, and relates to the technical field of methanol vaporization mixers.The green methanol vaporization mixer comprises a base, a mixing assembly and a conveying assembly, a mixing box is arranged at the outer end of the top of the base, a motor is arranged at the bottom end of the mixing box, and a driving gear is arranged at the output end of the motor. The rotating rod drives the exhaust fan to rotate, air at the bottom of the partition plate of the conveying box is exhausted through the one-way air inlet valve, a low-pressure area is formed, high-pressure methanol subjected to vaporization mixing in the mixing box enters the bottom of the conveying box from the exhaust pipe due to the air pressure difference when the on-off valve is opened, and then the reciprocating seat moves downwards to close the on-off valve; the exhaust fan continuously pumps methanol gas to the upper end of the conveying box, the methanol gas is fed into the catalytic oxidation reactor through the gas feeding pipe, according to the design, airflow is guided through the exhaust fan, pressure equalizing is achieved, follow-up catalytic reaction is assisted, operation of the exhaust fan is in linkage with the rotating rod, pressurization, proportioning, atomization, mixing, conveying and pressure equalizing of equipment are highly integrated, the structure is simplified, and the synchronization rate is optimized.

The present invention efficiently produces a carbonate salt from a carbon dioxide gas in an exhaust gas. This production method for a carbonate salt comprises: an atomizing step wherein an aqueous alkali solution is formed into a mist by an atomizer; a mixing step wherein the mist of the aqueous alkali solution obtained in the atomizing step is mixed with an exhaust gas so as to have a carbon dioxide gas in the exhaust gas absorbed in the mist and to form a carbonate salt by bonding positive ions of the mist and the carbon dioxide gas with each other, thereby having the mist contain the carbonate salt; and a separation step wherein the mist containing the carbonate salt obtained in the mixing step is separated from the exhaust gas.

The application discloses an energy-saving and low-consumption spray powder preparation system, which comprises a dryer, an extraction unit, a dust removal unit, a temperature rising unit, an air induction unit, a first waste heat conveying unit, a second waste heat conveying unit, a spray tower, a combustion-supporting unit and the dust removal unit; the extraction unit is connected with the dryer and is used for extracting flue gas generated by the dryer; an input end of the dust removal unit is connected with an output end of the extraction unit, and the dust removal unit is used for removing dust in the flue gas generated by the dryer; the temperature rising unit is arranged in a slow cooling section of a kiln, an input end of the temperature rising unit is connected with an output end of the dust removal unit, and the temperature rising unit is used for heating the flue gas generated by the dryer; and the application aims to provide the energy-saving and low-consumption spray powder preparation system, which conveys waste heat discharged by the dryer to the spray tower as auxiliary heat after the waste heat is heated, so that the waste heat can be reduced, the consumption of the spray tower can be reduced, and considerable economic benefits can be obtained.

The utility model discloses a gelatin spray drying device which comprises a drying tower, a metal drying culvert pipe is arranged on the inner wall of the top of the drying tower, an isolation cover is arranged at the bottom of the metal drying culvert pipe, a collecting box is arranged on the outer wall of the bottom of the drying tower, the isolation cover is fixedly connected with the collecting box, and fixing discs are arranged at the top and the bottom of a positioning cover. An annular scraper is slidably connected to the inner wall of the metal drying culvert pipe, two supporting rods are arranged at the top of the annular scraper, a positioning plate is arranged at the tops of the two supporting rods, two synchronous pneumatic push rods are arranged on the outer wall of the fixing disc, and the output ends of the synchronous pneumatic push rods are fixedly connected with the bottom of the positioning plate. The output shaft of the synchronous pneumatic push rod shrinks to drive the positioning plate to descend, the positioning plate drives the annular scraping plate to descend on the inner wall of the metal drying culvert pipe through the supporting rod, gelatin particles attached to the inner wall of the metal drying culvert pipe can be scraped away, and gelatin is prevented from being accumulated on the inner wall of the metal drying culvert pipe.

This invention discloses a spray drying system for drying a liquid into a powder, comprising: an elongated body; and closed arrangements at opposite upper and lower ends of the elongated body for forming a drying chamber within the elongated body. One of the closed arrangements includes a drying gas inlet for guiding drying gas into the drying chamber. A nozzle assembly is supported in one of the closed arrangements. The lower closed arrangement includes a powder collection container for collecting the dried powder in the drying chamber. The powder collection container is configured such that a covering gas can be guided into the interior of the powder collection container to cover the powder in the powder collection chamber, thereby protecting the powder from exposure to the drying gas from the drying chamber.