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24 results about "Vibratory fluidized bed" patented technology

Vibratory Fluidized Bed (VFB) is a type of fluidized bed where the mechanical vibration enhances the performance of fluidization process. Since the first discovery of vibratory fluidized bed, its vibration properties proves to be more efficient in dealing with fine particles which appears to be very difficult to achieve with normal fluidized bed. Even though numerous publications and its popularity in industrial applications, the knowledge about vibratory dynamics and properties are very limited. Future research and development are needed to further improve this technology to bring it to another level.

Vibrated fluidized bed drying equipment for ammonium sulfate production

The utility model relates to the technical field of vibrated fluidized bed dryers, and provides vibrated fluidized bed drying equipment for ammonium sulfate production, which comprises an equipment shell and a fluidized bed, the fluidized bed is arranged in the equipment shell, drying components are arranged on two sides of the equipment shell, and a material distribution component is arranged between the interior of the equipment shell and the fluidized bed. The vibration assembly is arranged outside the equipment shell, the feeding cover is fixed to the top in the equipment shell, a conveying belt is arranged in the equipment shell, and a plurality of scrapers are arranged on the surface of the conveying belt. According to the technical scheme, the problems that in the related technology, when to-be-dried ammonium sulfate is continuously added into the vibrated fluidized bed dryer, the ammonium sulfate is prone to being accumulated on the top of a fluidized bed, materials are accumulated, finally, the ammonium sulfate cannot be evenly heated, water in the ammonium sulfate deviates, and the drying effect and the production quality of the materials are reduced are solved.
Owner:TANGSHAN TIANSHUN COAL COKE CHEM CO LTD

A nuclear crystal prilling fluorite calcium prilling body washing system and method

This invention provides a washing system and method for calcium fluoride granules produced through nucleation granulation, comprising a plasma surface activation module, a supercritical fluid extraction washing module, and an intelligent control and circulation module connected in sequence. The plasma surface activation module is used to perform surface modification and impurity weakening treatment on pre-dried calcium fluoride granules. The supercritical fluid extraction purification module is used to deeply remove impurities from the surface and pores of the granules under anhydrous conditions. The intelligent control and circulation module is signal-connected to the aforementioned modules and is used to dynamically regulate the entire purification process based on online monitoring data. The plasma surface activation module includes a vibrating fluidized bed with a reaction chamber, solving the problem of incomplete removal of stubborn surface impurities by traditional water washing. Ultimately, the surface impurity removal rate of the calcium fluoride granules is stabilized at over 95%, and the product purity reaches a high standard for resource utilization.
Owner:FLUORINATION IND (YUNNAN) NEW MATERIALS TECHNOLOGY INNOVATION RESEARCH CO LTD

Multi-process integrated chemical drying experimental device

This invention relates to the field of chemical experimental equipment technology and discloses a multi-process integrated chemical drying experimental device, including a device frame. A vortex air pump is fixedly connected to the inner bottom frame of the device frame. An electric heater is fixedly connected to the output end of the vortex air pump. The output end of the electric heater is fixedly connected to a spray drying tower, a fluidized bed drying tower, and a vibrating fluidized bed dryer through a multi-way switching valve. Cyclone separators are fixedly connected to the exhaust ends of the spray drying tower, the fluidized bed drying tower, and the vibrating fluidized bed dryer. A hopper is fixedly connected to the upper surface of the device frame. A near-infrared online moisture meter is fixedly connected inside the device frame. A near-infrared online moisture display is fixedly connected to the outer surface of the near-infrared online moisture meter. The multi-way switching valve enables independent supply of hot air to each drying device, which can be adapted to the drying experimental needs of different powder / granular materials such as polyvinyl chloride resin powder and Shuanghuanglian granules.
Owner:TIANJIN BOHAI VOCATIONAL TECHN COLLEGE +1

Split type vibrated fluidized bed

The utility model relates to a split type vibrated fluidized bed, which aims to solve the technical problems that a flexible connecting piece is inconvenient to disassemble and assemble, the operation is complicated and the maintenance efficiency is influenced when the vibrated fluidized bed needs to be disassembled and maintained because the flexible connecting piece is connected between an upper bed body and a lower bed body through a bolt at present, and comprises the upper bed body, the lower bed body and a portal frame, the surface of one end, close to the lower bed body, of the upper bed body is provided with a first permanent magnet, the first permanent magnet is rectangular and is matched with the surface of the lower bed body, when the vibrated fluidized bed is maintained, the flexible connecting piece does not need to be manually disassembled and assembled, the maintenance efficiency of the vibrated fluidized bed is further improved, and when the vibrated fluidized bed works, the flexible connecting piece does not need to be manually disassembled and assembled. The connecting frame sleeves the outer side of the first permanent magnet to limit the horizontal displacement distance of the second permanent magnet, so that the influence on the connecting effect of the upper bed body and the lower bed body due to sliding separation of the first permanent magnet and the second permanent magnet caused by vibration of the vibrated fluidized bed is avoided.
Owner:CHANGZHOU HAIJIANG DRYING EQUIP CO LTD

Method for preparing sodium metasilicate nonahydrate and sodium metasilicate pentahydrate from by-product lye in production of zirconium oxychloride by alkali fusion method

The present application relates to the field of chemical material environmental protection technology, and particularly to a method for preparing nine-water and five-water sodium metasilicate from by-product lye in the process of producing zirconium oxychloride by alkali fusion method.The method comprises the following steps: removing zirconium from the by-product lye by once concentration and filtration, then adopting stepwise cooling and temperature control crystallization after twice concentration of the filtrate, and finally obtaining nine-water sodium metasilicate by solid-liquid separation through a scraper type centrifuge and obtaining five-water sodium metasilicate by drying through a vibrating fluidized bed.In the preparation process, no reagent for adjusting modulus is needed, and through specific step-by-step concentration and zirconium removal process, full component utilization of waste liquid is realized.The nine-water and five-water sodium metasilicate products prepared by the method have product indexes meeting the requirements of superior products, and have the characteristics of large crystal particles, less mother liquor entrainment, high whiteness, and low water insoluble substance.The process not only significantly reduces the production cost, but also realizes green preparation of non-phosphorus washing aid and closed circuit circulation of zirconium resources, and has significant economic benefits and environmental protection value.
Owner:SHANDONG GUANGTONG NEW MATERIALS CO LTD

A running water salt lump breaking device

The application discloses a kind of live water salt agglomerate elimination equipment, it is related to live water salt production equipment technical field, the equipment is aimed at solving artificial salt pouring material elimination salt agglomerate, there is technical problem of great labor intensity, low capacity, low degree of automation production, the equipment includes first conveying frame, first conveying shaft rotatable being installed in first conveying frame inside, first conveying belt being installed in first conveying shaft outside, first dust cover being fixedly connected on the upper end of first conveying frame;Wherein, first conveying frame right side is sequentially provided with weighing bin, vibration fluidized bed bottom shell and second conveying frame, the ground of second conveying frame rear side is provided with rotary dehumidification fan, the equipment uses the cooperation of fluidized bed plate and vibration motor, flow state is uniform, the cooling effect of live water salt is better, effectively prevent salt material and external air cross infection, salt material particle is little damaged, uses the cooperation of air-cooled water cooling unit and rotary dehumidification fan, and salt is cooled and cooled down.
Owner:CHONGQING SOTE SALT CHEM IND

Vibrating fluidized bed dust removal system and vibrating fluidized bed dust removal method

The application provides a vibrating fluidized bed dust removal system and a vibrating fluidized bed dust removal method, which can improve the filtering effect of dust-containing airflow. The vibrating fluidized bed dust removal system comprises a fluidized bed body, the fluidized bed body is used for loading filter material particles, the fluidized bed body has a cylindrical bed body side wall part, the whole of the bed body side wall part is arranged to be inclined to a first direction relative to the vertical direction, the bed body side wall part is provided with an inlet part and an outlet part, the inlet part and the outlet part are sequentially distributed along the first direction or the outlet part and the inlet part are sequentially distributed along the first direction, and the vibrating fluidized bed dust removal system further comprises a vibrating mechanism, and the vibrating mechanism is connected with the fluidized bed body.
Owner:北京怀柔实验室

Chicken fine processing quality monitoring control system

The invention relates to the technical field of chicken fine processing quality monitoring, and particularly provides a chicken fine processing quality monitoring control system. According to the system, through cooperative work of a temperature and humidity monitoring module, a vibration motor control module, a hot air control module, a processing quality monitoring module and the like, intelligent regulation and control of operation parameters of the horizontal vibrated fluidized bed are achieved. The core of the system is to monitor temperature and humidity data of a hot air outlet in real time and convert the temperature and humidity data into an absolute humidity value for trend analysis, so that fine change of a material feeding state in a processing process is sensitively sensed. Based on the fluctuation condition of absolute humidity, the system can actively adjust the operation parameters of the hot air system and the vibration motor in advance, and quality control is converted from traditional post-remedy into in-event intervention and pre-prevention. The intelligent control strategy significantly improves the stability and consistency of the quality of the chicken essence finished product.
Owner:四川友联味业食品有限公司

Vibration cooling fluidized bed of ABS device

A vibration cooling fluidized bed of an ABS device relates to the field of petrochemical machinery, solves the technical defect that a vibration motor vibrates the whole vibration fluidized bed, and comprises a lower box body, an upper cover, a distribution plate and the vibration motor, the distribution plate is fixedly arranged in the lower box body; the vibration motor is fixedly connected with the lower box body; the device is characterized in that the lower box body and the upper cover are arranged in a clearance mode, a soft connecting piece is arranged between the lower box body and the upper cover, and the lower box body, the soft connecting piece and the upper cover form a sealed space; the upper cover is supported on the ground through an upper cover supporting beam, and the upper cover supporting beam and the lower box body are arranged in a spaced mode. And the lower box body is supported on the ground through a damping mechanism. The upper cover is independently supported and fixed, vibration force applied to the lower box body by the vibration motor cannot be transmitted to the upper cover, the requirement of the vibration motor is lowered, and energy consumption of the vibration motor is effectively saved.
Owner:TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO LTD +1

Magnetic impurity removing device for raw material medicine production drying process

The utility model discloses a kind of magnetic impurity removing devices for raw drug production drying process, including magnetic separator, the magnetic separator is installed at the discharge port of vibration fluidized bed, and magnetic separator includes: shell, the upper end of the shell is equipped with feed inlet, the feed inlet is used to connect with the discharge port of vibration fluidized bed, the lower end of shell is equipped with discharge port, and the front side of shell is equipped with several chute extending to its inside;With the one-to-one correspondence of the chute, magnetic selection layer, the magnetic selection layer includes outer frame and the several magnetic force bars spaced apart in the outer frame, and the outer frame can be slid into or slid out of the shell along the chute.The utility model can effectively remove the magnetic impurities in product in raw drug production drying process.
Owner:ZIGONG HONGHE PHARM CO LTD

Chicken essence processing quality monitoring control system

The present application relates to the technical field of chicken essence processing quality monitoring, and specifically provides a chicken essence processing quality monitoring control system. The system realizes intelligent regulation and control of the operating parameters of a horizontal vibration fluidized bed through the collaborative work of temperature and humidity monitoring, vibration motor control, hot air control and processing quality monitoring modules. The core of the system is to monitor the temperature and humidity data of the hot air outlet in real time, and convert them into absolute humidity values for trend analysis, so as to sensitively perceive the subtle changes of the material feeding state in the processing process. Based on the fluctuation of the absolute humidity, the system can actively and in advance adjust the operating parameters of the hot air system and the vibration motor, and change the quality control from the traditional "after-the-fact remedy" to "intervening in the process" and "preventing beforehand". This intelligent control strategy significantly improves the stability and consistency of the chicken essence product quality.
Owner:四川友联味业食品有限公司

Vibrated fluidized bed with multi-section type material blocking mechanism

The utility model relates to a vibrated fluidized bed with a multi-section type material blocking mechanism, which aims at solving the technical problem that the current multi-section material blocking plate needs to be independently adjusted, so that the adjustment of the material blocking plate is troublesome, and comprises a plurality of groups of material blocking components and a synchronous component which are arranged on the vibrated fluidized bed, each material blocking assembly comprises a material blocking plate, a rotating shaft and two connecting blocks, the two connecting blocks are connected to the two sides of the top of the material blocking plate, the rotating shafts are rotationally connected to the two sides of an inner cavity of the vibrated fluidized bed, and the two connecting blocks rotationally sleeve the outer sides of the rotating shafts; the synchronous assembly comprises connecting plates installed on the two sides of one end of an inner cavity of the vibrated fluidized bed, and a worm is rotationally connected between the two connecting plates. And therefore, the adjustment of the striker plate is troublesome.
Owner:CHANGZHOU HAIJIANG DRYING EQUIP CO LTD

Double-layer vibrated fluidized bed dryer

The utility model discloses a double-layer vibrated fluidized bed dryer which comprises a bottom plate, a drying machine body is arranged on the bottom plate through a vibration spring and a supporting plate, a feeding port and a discharging port are formed in the two ends of the drying machine body respectively, chains are in transmission connection with the interior of the drying machine body through a transmission shaft and a chain wheel, and a plurality of fluidized bed plates are rotationally arranged between the two chains. The fluidized bed plate is provided with a plurality of fluidized bed plates, the two ends of the fluidized bed plates are rotatably connected with the chain, the adjacent fluidized bed plates are hinged, when the chain is driven by the motor to rotate, the fluidized bed plates are driven by the motor to rotate, and the material scraping plate is arranged on the upper side of the material outlet through the transverse moving support and the air cylinder. And a plurality of fluidized bed plates can be driven to horizontally move and adjust, so that dried materials can be conveniently conveyed to a discharge port to be discharged, the discharging is convenient and rapid, and the discharging thoroughness is high.
Owner:NANTONG FISE MASCH CO LTD

A spray drying apparatus for producing functional sugar alcohols

ActiveCN224462267UAlcohol sugarsFeed pump
This utility model discloses a spray drying device for producing functional sugar alcohols, including a raw material tank connected to a hot air distributor via a feed pump, and the hot air distributor connected to a drying tower. A hot air heater and an air intake fan are sequentially connected to the inlet of the hot air distributor. A vibrating fluidized bed is connected to the bottom of the drying tower via a moisture detector. An exhaust port is provided at the top of the drying tower, and a cyclone separator is connected to the exhaust port. The discharge port of the cyclone separator is connected to a powder return pipe, which is connected to the drying tower. The exhaust port of the cyclone separator is connected to a water film dust collector, which is connected to an electrostatic absorption device. The electrostatic absorption device is connected to the inlet of a turbocharger fan, and the outlet of the turbocharger fan is connected to the inlet of the hot air heater. A steam pipeline is also connected to the inlet of the turbocharger fan via a first valve. This utility model improves the powder recovery rate, reduces powder loss, and can also recover waste heat, reducing energy consumption.
Owner:SHANDONG XINGGUANG CAPITAL BIOTECHNOLOGY CO LTD

Vibrating fluidized bed

1. Name of the product in this design: Vibrating fluidized bed. 2. Purpose of this design: For drying and cooling granular or powdery materials. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.
Owner:TIANJIN ANYINS TECHNOLOGY CO LTD

Vibrating fluidized bed oligonucleotide synthesizer

To provide an efficient solid phase oligonucleotide synthesis (SPOS) method.SOLUTION: A method of adding an oligonucleotide to a solid support in a bed reactor, the method comprising: removing a protecting group from a 5' - position of an oligonucleotide bound to the solid support; and adding an activated amidite solution to the bed reactor, wherein: Wherein the activated amidite solution comprises an amidite and flows up and down or is fluidized by nitrogen bubbling or other agitation in the bed reactor and reacts at the 5 ' position of the oligonucleotide, wherein the phosphite linkage found in the amidite comprises a P atom in oxidation state III, and then converting the P atom from oxidation state III to oxidation state V.SELECTED DRAWING: None
Owner:ELI LILLY & CO

Fluidized bed drying and granulating integrated unit

PendingCN121804168Aavoid direct accessSolving technical pain points that are prone to cloggingDrying solid materials with heatDrying gas arrangementsFluidized bed dryingMotor vibration
The invention discloses a fluidized bed drying and granulating integrated unit which comprises a vibration bed body, an eccentric motor is arranged at the side end of the vibration bed body, a spring foot stool is installed at the bottom of the vibration bed body, a vibration plate is arranged on the vibration bed body, and the bottom of the vibration bed body is communicated with the vibration plate through external air supply equipment to supply air. The top surface of the vibration plate is of a smooth plane structure, a plurality of long flow guide plates are arranged on the vibration plate, the long flow guide plates are arranged at equal intervals, each long flow guide groove is provided with a ventilation channel, and the ventilation channels are formed in the side walls of the two ends of each long flow guide groove respectively. By optimizing the structural design of the vibration plate, the ventilation channel is arranged on the side wall of the flow guide long plate, and the detachable module plate and the flow guide baffle are matched, so that the technical problem that ventilation holes of an existing vibrated fluidized bed are easy to block is fundamentally solved.
Owner:GUANGXI DOUBLE ANT PHARMA

Reciprocating type vibration drying fluidized bed

A reciprocating type vibration drying fluidized bed relates to the field of petrochemical machinery, solves the technical defects caused by the fact that an existing vibration fluidized bed is driven by a traditional vibration motor, and comprises a lower bed body, an upper bed cover and a sieve plate, and a soft connecting piece is arranged between the lower bed body and the upper bed cover. The lower bed body is installed on the ground through a reciprocating type vibration supporting structure. The reciprocating type vibration supporting structure comprises an elastic supporting structure and a vibration driving mechanism. The vibration driving mechanism comprises a crank, a linkage rod, a transmission rod and a variable frequency motor driving mechanism; the upper end of the crank is connected with the upper rack of the group of elastic supporting structures, the lower end is connected with the linkage rod, and the middle part is rotationally connected with the supporting seat through a crankshaft; one end of the transmission rod is hinged with the crank or the linkage rod, and the other end is connected with the variable-frequency motor driving mechanism; the variable frequency motor driving mechanism is installed on the ground. The energy consumption required for driving the lower bed body to vibrate is low, the generated vibration amplitude is large, and materials can be better controlled to uniformly move forwards on the sieve plate.
Owner:TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO LTD +1

A novel vibrated fluidized bed and its fluidization method

The application discloses a novel vibrating fluidized bed and a fluidization method thereof. The fluidized bed comprises a mounting frame, an air distribution chamber, a fluidization bin body, an air distribution plate and a vibrating motor. The air distribution chamber is connected to the mounting frame and is provided with at least one air inlet along the side wall of the air distribution chamber. The fluidization bin body is correspondingly mounted above the air distribution chamber, and a feeding hopper is arranged at the top end of the fluidization bin body. At least one air outlet pipe is arranged along the length direction of the top end of the fluidization bin body. The air distribution plate is fixedly arranged between the air distribution chamber and the fluidization bin body. The air distribution plate is uniformly provided with air distribution holes, and a plurality of vibrating rods are arranged on the air distribution plate according to a predetermined spacing and arrangement mode. The vibrating motor is fixedly connected to the side wall of the air distribution chamber. The vibrating rods are used to strengthen the fluidization effect of the material, effectively break the particle group in the upper part of the fluidized bed layer, strengthen the gas-solid contact and particle mixing of the particle bed layer, and improve the use effect of the vibrating fluidized bed in the fields of drying, cooling, granulation, surface modification and powder conveying.
Owner:CHINA UNIV OF MINING & TECH

A vertical vibrating fluidized bed dryer

PendingCN122360058AElectric machineryMechanics
This invention discloses a vertical vibrating fluidized bed dryer, comprising a vertical inner cylinder and an outer shell. The lower end of the inner cylinder is closed, and the upper end is open. A discharge port is provided at the bottom of the inner cylinder. An inner bed distribution plate connected to the discharge port is provided at the lower part of the inner cylinder. The inner bed distribution plate has a tapered structure that tapers from top to bottom and is evenly distributed with air holes. An inner bed air inlet is provided at the lower part of the inner cylinder outside the inner bed distribution plate. The outer shell has closed ends at both the top and bottom. The lower part of the outer shell and the lower part of the inner cylinder are sealed together. An exhaust port and a feed pipe are provided at the upper end of the outer shell. An outer bed air inlet is provided at the lower part of the outer shell. A spiral distribution plate arranged spirally from top to bottom is provided between the outer shell and the inner cylinder. Air holes are evenly distributed on the spiral distribution plate. A partition is connected between the highest and lowest points of the spiral distribution plate. A feed hole is provided on the inner cylinder wall near the lowest point of the spiral distribution plate. A vibration motor for driving the outer shell to vibrate is provided on the outer periphery of the outer shell.
Owner:NANJING TACHUAN CHEM EQUIP CO LTD

Efficient vibrated fluidized bed

The utility model belongs to the technical field of drying machinery, and discloses an efficient vibrated fluidized bed which comprises an upper box body and a lower bed body. A first vibration structure and an upper box body are adopted, materials are fed into the upper box body through a feeding port, a first driving motor drives a first driving roller to rotate and drives a first conveying net belt to convey the materials, the materials are heated by thermal radiation of a ceramic heating plate when passing through the position below the ceramic heating plate, and preliminary drying is conducted; a rotating rod of a first vibration structure is driven by a third driving motor to rotate, a beating ball is driven to rotate, and a first conveying mesh belt is beaten, so that the first conveying mesh belt generates high-frequency vibration, materials are scattered through vibration, the later-stage fluidization drying efficiency and uniformity are improved, the materials are located on the top face of the first conveying mesh belt and are evenly vibrated and spread, and the drying efficiency is improved. The primary drying effect is good, the vibration smashing effect is good, and meanwhile the problems that ultrasonic vibration is high in electricity utilization requirement, complex in structure and high in maintenance and production cost are solved.
Owner:VIBOER VIBRATION TECH (SHANGHAI) CO LTD

An internally heated vibrating fluidized bed

This application relates to an internally heated vibrating fluidized bed, belonging to the technical field of fluidized bed equipment. It includes an operating frame with placement openings fixedly connected to both sides of its top. A support frame is fixedly connected to the bottom of the operating frame. The operating frame contains a multi-stage circulation mechanism and a heating mechanism. The support frame contains a gas circulation mechanism. The multi-stage circulation mechanism includes multiple placement plates, with the farthest side of each placement plate fixedly connected to the inner wall of the operating frame. A limiting block is fixedly connected to the inner top of each placement plate. This application utilizes a drive motor in the vibration assembly to rotate an eccentric wheel, generating centrifugal force that vibrates the operating frame, which is then transmitted to the placement plates. This achieves multi-stage material circulation, and the material tumbles and jumps on the limiting plates, enhancing material mixing and improving drying uniformity.
Owner:CHANGZHOU ZHIYANG MASCH EQUIP CO LTD

A sodium carbonate evaporation and drying system

This invention discloses a sodium carbonate evaporation and drying system, aiming to address the shortcomings of existing sodium carbonate extraction systems, such as low evaporation efficiency and high energy consumption. The invention includes an evaporation section and a drying section. The evaporation section comprises a double-effect evaporator, a crystallizer, and a thickener arranged in series. The drying section includes a screw conveyor, a steam radiator, and a vibrating fluidized bed. The double-effect evaporator is also connected to a steam compressor. The steam compressor compresses and heats the steam generated in the double-effect evaporator before returning it to the evaporator. The steam radiator connects to a fresh steam pipe and an air pipe, heating the air with steam. The air pipe connects to the vibrating fluidized bed, and the heated air heats the material in the vibrating fluidized bed. By utilizing the high-temperature steam generated by the steam compressor to simultaneously heat the air source for both the evaporator and the vibrating fluidized bed aeration, efficient reuse is achieved, reducing the number of devices and improving heat utilization efficiency.
Owner:SHANGHAI SENON CO LTD

Energy-saving and environment-friendly pneumatic drying device for crystals

The utility model relates to an energy-saving and environment-friendly pneumatic drying device for crystals, which is particularly suitable for a finished product preparation process of crystals with the average mesh number of 40-200, taking small crystal monosodium glutamate as an example, wet crystal raw materials are sequentially subjected to vibrated fluidized bed drying and pneumatic drying and are output to a packaging device, and finished products at a discharge port of a pneumatic cyclone separator are packaged. Large particles are sequentially connected to a crusher and an airflow feeding section, an airflow outlet is connected to a fan, and then connected to an air inlet of a fluidized bed and a discharge port of a pre-drying cyclone separator or / and a pre-drying bag-type dust collector and connected to the airflow feeding section, so that the defects of an existing vibrated fluidized bed and an airflow drying process can be avoided; the method has the advantages of high investment cost performance, low maintenance and operation cost, good environmental protection property of exhausted tail gas, low crystallization rate, low acid damage rate and good finished product brightness.
Owner:YANGZHOU RIFA DRYING ENG CO LTD