Calcium Sulfate High Efficiency Fluidized Bed Dryer

Calcium carbonate is widely used in rubber, plastics, fertilizers, pesticides, paints, textiles, food, medicine, papermaking, daily chemicals, arts and crafts, culture and education, in addition to being widely used as building materials and cement raw materials. In areas lacking sulfur resources, it can be used to manufacture sulfuric acid and ammonium sulfate. Colorless and transparent gypsum can be used as optical material. It is the raw material for the manufacture of cement, calcium sulfate hemihydrate and sulfuric acid. Used as a filler in the paint and paper industries. Used as fertilizer in agriculture, it can reduce soil alkalinity and improve soil performance. It is also used as a tissue enhancer in canned tomatoes and potatoes, a hardener for brewing water, a flavor enhancer for wine, etc. It can be used to make various models for building materials and cement production, and it can be used as a gypsum bandage in medical treatment. In addition, it can also be used to adjust the setting time of cement, as a white pigment for paint, a filler for paper and polishing powder, and it is also a commonly used desiccant. Also used in metallurgy and agriculture. Also used as a bread improver. The drying of calcium carbonate has also become a very important thing. For this reason, Griffin has carefully developed a high-efficiency fluidized bed dryer for calcium carbonate. Calcium carbonate high-efficiency fluidized bed dryer is suitable for drying and cooling of powdery and granular materials in chemical, pharmaceutical, food, dehydrated vegetables, grain, mining and other industries. Such as: calcium carbonate, citric acid, monosodium glutamate, borax, ammonium sulfate, compound fertilizer, shredded radish, soybean meal, distiller's grains, seeds, slag, sugar, etc. The calcium carbonate fluidized bed dryer developed by Griffin has the following advantages ◎The vibration source is driven by vibration motor, which has st

The Problem Of Energy Efficiency And Drying Temperature Of Horizontal Spray Dryer

At present, among the many drying equipments, the horizontal spray dryer is one of the dryers with higher output value, and each set ranges from several hundred thousand to several million. There are many professional manufacturers of horizontal spray dryers in Wenzhou, Shanghai, Wuxi, Jiangyin, Xining and other places, which provide users with hundreds of spray drying equipment every year. From the perspective of research, in each academic paper of the National Drying Association, the research content of spray drying technology is the first of all models, and the imperfection of the theory and the wide range of applications have always attracted the attention of a large number of researchers. The horizontal spray dryer has fast drying speed, and the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated instantly, and the drying time is only a few seconds, especially suitable for heat-sensitive materials The dryness. Horizontal spray dryer has good uniformity, fluidity and solubility, high product purity and good quality. The production process is simplified, the operation control is convenient, there is no need to crush and screen after drying, which reduces the production process and improves the purity of the product. However, the heat consumption per unit weight of the product is large, and the investment that enterprises need to make is relatively large, which generally cannot be afforded by small and medium-sized enterprises. Therefore, the main measures to reduce the consumption of spray drying equipment. Because the energy consumption in the spray drying process directly affects the economic benefits and development prospects of the enterprise, industry experts have put forward many measures to save energy and reduce consumption in the spray drying process.

Performance characteristics of high-speed centrifugal spray dryer

The high-speed centrifugal spray dryer has some advantages in performance. In actual situations, it can be equipped according to the performance of the centrifugal spray dryer. We also need to choose the most suitable drying equipment. Then the high-speed centrifugal spray dryer is a What kind of performance equipment, let's briefly tell you about it. 1. The drying speed is fast. The surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated instantly, and the drying time is only a few seconds. It is especially suitable for drying heat-sensitive materials. 2. The product has good uniformity, fluidity and solubility, high product purity and good quality. 3. The production process is simplified and the operation control is convenient. For liquids with a moisture content of 40-60% (special materials can reach 90%), it can be dried into powder products at one time. After drying, there is no need to pulverize and screen, reducing production processes and improving product purity. The particle size, bulk density and water content of the product can be adjusted by changing the operating conditions within a certain range, and the control and management are very convenient. These are some of the performance advantages of high-speed centrifugal spray dryers. You can choose products according to the actual situation.

Borax Vibrating Fluid Bed Dryer

Borax has a wide range of applications in medical and chemical fields. Boric acid is a white powdery crystal or a scaly lustrous crystal on a tri-oblique axis. It has a smooth feel and no odor. Soluble in water, alcohol, glycerin, ethers and essential oils, the aqueous solution is weakly acidic. It is widely used in the glass (optical glass, acid-resistant glass, heat-resistant glass, glass fiber for insulating materials) industry, which can improve the heat-resistant and transparent properties of glass products, improve the mechanical strength, and shorten the melting time. In medicine, it is used as a preservative, a pH regulator, etc. Borax is widely used, and the borax vibrating fluidized bed developed by Griffin can handle borax very well. Borax vibrating fluidized bed dryer has the following advantages ◎The vibration source is driven by vibration motor, which has stable operation, convenient maintenance, low noise and long service life. ◎The fluidization is well-proportioned, without dead space and blow-through phenomenon, which can obtain uniform drying and cooling of products. ◎Good adjustability and wide application. The thickness of the material layer, the speed of movement in the machine, and the change of the full amplitude can be adjusted steplessly. ◎Small damage to the material surface. It can be used for drying fragile materials, and the work effect will not be affected when the material particles are irregular. ◎Adopt a fully enclosed structure. Effectively prevent the cross between the material and the air, and the working environment is clean. ◎High mechanical efficiency and thermal efficiency, good energy-saving effect, 30-60% energy saving than ordinary drying devices. Griffin Borax Vibrating Fluidized Bed Dryer allows the material to enter the machine from the feed inlet. Under the action of the vibration force, th

Equipment characteristics of high-speed centrifugal spray dryer

The high-speed centrifugal spray dryer adopts a high-speed centrifugal atomizer, which atomizes the material liquid into fine droplets, which are mixed with the hot air distributed by the distributor in the drying tower, and the heat and mass are exchanged rapidly. It dries to a powdery product within a short period of time. This high-speed centrifugal spray dryer also has some features. The main features are as follows. 1. Different kinds of solutions, suspensions, emulsions and paste-like materials can be produced by one-time continuous drying. 2. The mist moment and droplet particle diameter of spray drying can be adjusted slightly. 3. The distribution of hot air is reasonable, eliminating the phenomenon of ceiling suction and sticking to the wall. 4. It is suitable for drying heat-sensitive and non-heat-sensitive materials at the same time, and the product particles are finer than those of pressure spray-dried products. 5. The production process is simplified, the operation is convenient, and the product has good fluidity and instant solubility. This is the equipment characteristics of the high-speed centrifugal spray dryer. When we choose, we also look at these points.

Working Principle Of Vibrating Fluidized Bed Dryer

Vibrating fluidized bed is a kind of granular material drying equipment, mainly used in the process of granular feed processing. As a drying equipment, it is necessary for the user to understand the drying principle of the vibrating fluidized bed? The vibrating fluidized bed dryer is a vibrating motor that generates an excitation force to make the machine vibrate. The material jumps forward under the action of the excitation force in a given direction. At the same time, the hot air input at the bottom of the bed makes the material in a fluidized state, and the material particles and hot air are sufficient. Contact to achieve the desired drying effect. The material enters from the material port, the material on the vibrating tank is in orthogonal contact with the hot air passing through the lower part of the vibrating tank to transfer heat, the wet air is drawn out by the induced air, and the dry material is discharged from the discharge port. Features of vibrating fluidized bed dryer: 1. The vibratio

Benzoic acid spin flash dryer

In daily life, benzoic acid is needed in many places. Benzoic acid is widely used in the production of medicines, dye carriers, plasticizers, fragrances and food preservatives, etc. It is also used in the performance improvement of alkyd resin coatings. In medicine, it is mainly used for antifungal and disinfection and antisepsis, and in chemical industry Used as chemical reagents and preservatives, usually used as fixatives or preservatives in food. Also used as a preservative for fruit juice beverages. It can be used as an ointment incense fragrance. It can also be used in edible flavors such as chocolate, lemons, oranges, sub-berries, nuts, and candied fruits. Benzoic acid is also commonly used in tobacco flavors. The wide use of benzoic acid has made it a headache for many manufacturers to produce dry benzoic acid. After ten years of special research, Griffin has developed a benzoic acid spin flash drying in the research and development of drying equipment and the characteristics of benzoic acid materials. machine. The clean air heated by the heat exchanger in the rapid rotary flash dryer developed by Griffin is blown into the air inlet, spun into the annular gap at the bottom of the drying chamber at a suitable speed, and then enters the drying chamber in a tangential direction, and rises in a spiral shape : At the same time, the material is quantitatively fed into the tower by the feeder with stepless speed regulation. In the drying tower, the material and the hot air undergo sufficient and efficient mass-heat conversion, and the dried powder material is transported to the separator together with the hot air, where the finished product is collected and packaged, and the exhaust gas is further processed by the dust removal device and then emptied. Griffin Drying Technology is honestly manufactured, well-made, professionally committed to the research and development of benzoic acid spin flash dryers, the manufacture o

The difference between rotary vacuum dryer and ordinary dryer

The rotary vacuum dryer has advanced technology, stable operation, high drying efficiency and convenient maintenance. It is especially suitable for materials that are easy to be oxidized, heat-resistant and need to recover solvent. There are many differences between ordinary rotary dryers and ordinary dryers. 1. The heating speed of ordinary vacuum dryer is slow and the coal consumption is large, while the rotary vacuum dryer adopts electromagnetic wave heating, which has fast heating speed, high power, greatly shortened drying cycle and greatly reduced energy consumption. 2. When the rotary vacuum dryer is heated, the temperature difference on the surface of the material is small, which will not cause damage to the physical structure and improve the drying quality. 3. The rotary vacuum dryer can produce continuously. Simple operation and manpower saving. 4. The rotary vacuum dryer can sterilize the materials to ensure the safety and service life of the products. 5. The rotary vacuum dryer has the advantages of energy saving, consumption reduction, good product quality, labor saving, etc. The price is reasonable, the use is more extensive, and the evaluation is higher. It is a new type of high-efficiency drying equipment. To sum up, the rotary vacuum dryer has greater advantages in quality, drying capacity and energy saving ability. The rotary rotary vacuum dryer is your best choice. Welcome to purchase a rotary vacuum dryer and find a professional manufacturer. Griffin Co.

Performance characteristics of hot air circulation oven

The hot-air circulating oven has a wide range of applications and can dry various materials. It is an ideal general drying equipment. And the working cycle of the oven is prolonged, which makes it impossible to complete the process on time under the two-shift system of normal production positions, and the process of the production task is almost missed. Plan and increase production costs. After years of production and development, hot air circulation oven has reached the level at home and abroad. It can use electricity, gas, steam, heat transfer oil, etc. as heat sources, and use an axial fan to heat the air in a convective manner to the heat exchanger. The layer of hot air flows through the baking pan and transfers heat to the material. Fresh air enters the oven from the air inlet for replenishment, and then is discharged from the moisture outlet, constantly replenishing fresh air and constantly expelling hot and humid air, so as to maintain proper relative humidity in the oven. The hot air circulation oven is a general-purpose drying equipment with a wide range of adaptability. It is widely used in the heating, curing, drying and dewatering of materials and products in the pharmaceutical, chemical, food, light industry, heavy industry and other industries. Such as: raw materials, crude drugs, Chinese herbal medicines, powders, granules, granules. The hot air circulation oven has reached the domestic and international level after many upgrades. The hot air circulation oven has an average thermal efficiency of about 30%. It adopts centrifugal fans, extracorporeal circulation of the o

Spray Drying Methods And Comparison Of Advantages And Disadvantages

There are many types of drying granulators, but spray drying granulators are widely used. The spray dryer is designed after digestion, absorption and improvement based on the introduction of foreign products of the same type in the 1980s. Because spray dryers are easy to operate, superior in performance, and excellent in manufacturing, they are especially popular among users in the pharmaceutical and food industries because they can meet GMP requirements in the pharmaceutical and food industries. This equipment is especially suitable for drying and granulating Chinese and Western medicines and foods. The prepared granules have strong disintegration, good fluidity and good instant dissolution, and can be directly used for tablet pressing, capsule filling, granulation and solid beverages, etc. Spray drying is still widely used in chemical, light industry, food and other industries because of its special advantage that it can directly obtain powdery products with uniform ingredients from a solution or suspension system. The dye industry is widely used in the chemical industry. After the efforts of the majority of engineers and technicians in recent years, the spray drying technology has become more mature, and there are also successful calculation methods for determining the tower size. Spray drying refers to the process of atomizing the liquid to be dried into tiny droplets through an atomizer in the d

Principle and performance characteristics of centrifugal spray dryer

The principle of centrifugal spray dryer: After filtering and heating, the air enters the air distributor at the top of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer at the top of the tower body, and is sprayed (rotating) into extremely fine mist-like liquid droplets, which can be dried into finished products in a very short period of time in co-current contact with hot air. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is evacuated by the fan. Features of centrifugal spray dryer: ◎The drying speed is fast, and the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated instantly, and the drying time is only a few seconds, especially for the drying of heat-sensitive materials. ◎The product has good uniformity, fluidity and solubility, high product purity and good quality. ◎The production process is simplified and the operation and control are convenient. For liquids with a moisture content of 40-60% (special materials can reach 90%), it can be dried into powder products at one time. After drying, there is no need to pulverize and screen, reducing production processes and improving product purity. The particle size, bulk density and water content of the product can be adjusted by changing the operating conditions within a certain range, and the control and management are very convenient. ◎ The amount of water evaporation is related to the characteristics of the material and the temperature of the hot air inlet and outlet. Ordering instructions: ◎Material liquid name, physical properties: solid content (or water content), viscosity, surface tension, PH value. ◎Dried powder capacity, allowable res

Advantages in the working process of spin flash dryer

The structure of the spin flash dryer can divide the working process into four stages: crushing, gas-solid contact, drying, and grading. These four working processes are also not available in other dryers at the same time. Crushing: Since the rotary flash dryer is mainly used for drying paste-like materials, the materials are immediately crushed by stirring blades and high-speed airflow after entering the dryer, which maximizes the dispersion of materials and the surface area of wet materials per unit volume. Gas-solid mixing: The rotary flash dryer uses air as the heat carrier, and whether the gas-solid mixing can be effectively achieved is the main factor affecting the drying rate. The stirring blade breaks the material and produces a dispersion effect. At the same time, the hot air entering the dryer is also in a highly flowing state, and quickly achieves gas-solid mixing. Drying stage: After the material is crushed, it is blown up by the high-speed rotating hot air from the bottom, forming a relatively stable fluidized bed in the drying chamber. evaporated at this stage. Classification stage: The classifier is an annular baffle installed at the lower part of the outlet of the dryer. The material rises with the air flow. Due to the centrifugal force, the large and wet materials are affected by the centrifugal force and the rotation radius increases. When the rotation radius is larger than the radius of the classification ring, the material is blocked in the dryer, and can be discharged from the dryer through the classifier until the requirements are met.

Spray dryers are widely used in the coffee industry

In spray drying, the material to be dried is suspended in air, i.e. the liquid is converted into a mist-like mist (atomization), providing a large surface area. The atomized liquid is exposed to the hot air of the drying chamber. Air and solids can flow in parallel or in countercurrent. Moisture evaporates quickly, so this process is useful for any material that is damaged by prolonged exposure to heat. The solids are recovered as a powder consisting of fine, hollow spherical particles. Heating the dry air can be accomplished with steam or direct gas fired air heaters or indirect gas, liquid or solid fuel heaters. Typically, as part of the process, the exhaust gas is passed through cyclones and/or filters to recover particulate matter (dust) entrained in the exhaust gas. Recycled materials are reincorporated into products. Spray drying parameters: The body of the spray dryer is large so the particles can settle as they dry without hitting the walls where they might be attached. Commercial dryers can be very large, around 10m in diameter and up to 20m in height. The intake air temperature used can reach about 250°C or higher (depending on the type of product), but the air temperature drops rapidly to about 95°C (air outlet temperature) due to evaporation. The product temperature will be 20 to 30°C lower than the air outlet temperature. Application fields: Spray dryers are widely used in dairy and coffee industries.

Spray drying is a method of applying systematic technology to material drying. What are the forms?

Spray drying is a method of applying systematic technology to material drying. After the thinner is atomized in the drying chamber, in contact with the hot air, the moisture rapidly vaporizes to obtain a dry product. This method can directly dry the solution and emulsion into powder or granular products, and can save the steps of evaporation and pulverization. Through mechanical action, the material to be dried is dispersed into very fine mist-like particles (to increase the evaporation area of water and accelerate the drying process) and contact with hot air to remove most of the water in an instant to make the solid in the material The substance dries into a powder. Mechanism of action (1) Pressure spray drying method: ①Principle: Using a high-pressure pump, the material is passed through an atomizer (spray gun) at 70-200 atmospheres to polymerize into 10-200 atomized particles that directly contact the hot air for heat exchange, and drying is completed in a short time. ②Pressure spray atomization device: M-type and S-type, with guide grooves that make the liquid flow rotate, the axis of the M-type guide groove is perpendicular to the nozzle axis, and does not intersect with it; the axis of the S-type guide groove is at a certain angle to the horizontal. The purpose is to try to increase the turbulence of the solution when spraying. (2) Centrifugal spray drying method: ①Principle: Centrifugal force is given to the solution by using a high-speed rotating disk in the horizontal direction, which will be thrown out at high speed to form a film, filament or droplet. Due to the friction, obstruction and tearing of the air, it will be generated with

Application of battery grade ferrous oxalate flash dryer

Application of battery grade ferrous oxalate flash dryer Properties: Light yellow crystalline powder, slightly irritating. Melting point: 160℃ (decomposition) Tap density: 1.25g/cm3 Bulk density: 0.8g/cm3. Solubility: Loss of crystal water at 142°C under vacuum. Dissolved in cold water 0.022g/100g, in hot water 0.026g/100g, insoluble in water, soluble in cold salt solution. Stable under normal temperature and pressure, light yellow crystalline powder. Its hydrate, ferrous oxalate dihydrate, loses crystal water at 142°C under vacuum and can be dissolved in cold salt solution. It is insoluble in water, but can be slowly dissolved in cold hydrochloric acid. Ferrous oxalate is heated and decomposed into ferrous oxide, carbon monoxide and carbon dioxide. The chemical equation is as follows: FeC2O4 = FeO + CO↑ + CO2↑ (heating) The design parameters of the flash dryer are as follows: Material initial moisture: 15-20%; Final moisture content of material: £0.5-1%; Inlet air temperature: 120-140℃; Outlet air temperature: 80-95℃;

Flash dryer: low energy consumption and high thermal efficiency

The flash dryer enters the bottom of the dryer tangentially from hot air, and is driven by the agitator to form a powerful rotating wind field. The material enters the dryer from the screw feeder. Under the strong action of the high-speed rotating stirring paddle, the material is dispersed under the action of impact, friction and shearing force. The block material is quickly crushed, fully contacted with hot air, heated and dried . The dried materials are carried by the airflow into the dust collection system for collection and processing. The exhaust gas with dust content of <50mg/m3 in compliance with environmental protection requirements is evacuated by the induced draft fan to complete the entire drying process. The advantages of flash dryer equipment 1 The drying chamber has high circumferential air velocity and short material residence time, which can effectively prevent the material from sticking to the wall and the deterioration of heat-sensitive materials, and can be dried into a uniform powder product at one time, eliminating the need for crushing, screening and other processes. 2 The drying chamber is equipped with a grading ring and a swirl plate, and the fineness of the material and the final moisture are adjustable. The special air distribution device reduces the resistance of the equipment and effectively improves the drying uniformity of the material. 3 The bottom of the dryer is equipped with a special cooling device and air pressure sealing device to avoid the deterioration of the material in the high temperature zone at the bottom.

High Quality Vibrating Fluidized Bed Equipment

Vibrating fluidized bed dryer, referred to as vibrating fluidized bed, is a new type of fluidized drying equipment suitable for drying granular and powdery materials. It has the advantages of easy operation, energy saving and environmental protection. The fluidized bed dryer enters the machine from the feed inlet. Under the action of vibration, the materials are thrown along the horizontal fluidized bed and move forward continuously. The hot air passes upwards through the fluidized bed and exchanges heat with the wet materials. The air is discharged by the exhaust air 1:3 after being dust-removed by the cyclone separator. Dry materials are discharged from the discharge inlet. It is suitable for drying and cooling of powdery and granular materials in chemical, pharmaceutical, food, dehydrated vegetables, grain, minerals and other industries. Scope of application Fluidized bed dryer is suitable for drying, cooling and humidifying various granular material crystals and

Design considerations for battery grade ferrous oxalate flash dryer

Design considerations for battery grade ferrous oxalate flash dryer Properties: Light yellow crystalline powder, slightly irritating. Melting point: 160℃ (decomposition) Tap density: 1.25g/cm3 Bulk density: 0.8g/cm3. Solubility: Loss of crystal water at 142°C under vacuum. Dissolved in cold water 0.022g/100g, in hot water 0.026g/100g, insoluble in water, soluble in cold salt solution. Stable under normal temperature and pressure, light yellow crystalline powder. Its hydrate, ferrous oxalate dihydrate, loses crystal water at 142°C under vacuum and can be dissolved in cold salt solution. It is insoluble in water, but can be slowly dissolved in cold hydrochloric acid. Ferrous oxalate is heated and decomposed into ferrous oxide, carbon monoxide and carbon dioxide. The chemical equation is as follows: FeC2O4 = FeO + CO↑ + CO2↑ (heating) 1. The design parameters of the flash dryer after the raw materials are dehydrated by pressure filtration: Material initial moisture: 15-20%; Final moisture content of material: £0.5-1%; Inlet air temperature: 120-140℃; Outlet air temperature: 80-95℃; Second, flash dryer design considerations: 1. Since the finished powder of ferrous sulfate is very fine, the smallest particle size after micro-pulverization reaches more than 1000 meshes. During the exhaust gas treatment process, the system is equipped with a dust collector, and the pressure loss of the dust collector bag is relatively large. Pay attention to the wind pressure when selecting the induced draft fan. choose; 2. Pay attention to the hygroscopicity of materials during continuous production, transportation and packaging in large quantities; 3. When the finished product requires a moisture content of £0.2%, it is bes

High Efficiency Calcium Carbonate Spin Flash Dryer

Calcium carbonate (CaCO₃) is an inorganic compound, commonly known as limestone, limestone, stone powder, marble, etc. Calcium carbonate is neutral, basically insoluble in water, and soluble in hydrochloric acid. It is one of the common substances on earth and exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks, and is also the main component of animal bones or shells. Calcium carbonate is also an important building material and is widely used in industry. If calcium carbonate is used as a compound, it is too widely distributed in nature. The main component of common marble is calcium carbonate. Specifically, it is the main component of some commonly used calcium supplements in medicine, which means that the calcium we often supplement comes from these calcium salts such as calcium carbonate and calcium sulfate. Calcium is a very important electrolyte in our body, which can reduce the excitability of neuromuscular and is an important component of skeleton and teeth. Calcium supplementation is generally used in infants, postmenopausal women or patients with severe osteoporosis, or some patients with fractures or nonunion of fractures. These patients need calcium supplementation. In addition to calcium supplementation, it is also necessary to supplement some vitamin D, which can promote the utilization of calcium, that is, by supplementing these calcium salts, these electrolytes needed by bones, teeth, and nerve muscles can be supplemented to supplement nutrition. Calcium carbonate plays an important role in both nature and medicine. Griffin has carefully developed a high-efficiency calcium carbonate spin flash dryer, which has the following advantages 1. High drying strength. Because the material is micronized by centrifugation, shearing, collision and friction, it is in a highly dispersed state, and the relative velocity between the gas and solid phases is rel

Molecular Sieve Spin Flash Dryer

Molecular sieves are aluminosilicate compounds with cubic lattices. Molecular sieve has a uniform microporous structure, and its pores have uniform diameters. These pores can adsorb molecules smaller than their diameters into the interior of the pores, and have preferential adsorption capacity for polar molecules and unsaturated molecules. Molecules with different degrees of sexuality, different degrees of saturation, different molecular sizes and different boiling points are separated, that is, they have the function of "sieving" molecules, so they are called molecular sieves. Because molecular sieves have the advantages of high adsorption capacity and strong thermal stability that other adsorbents do not have, molecular sieves have been widely used. Molecular sieves are widely used in various industries as desiccants. GRIFFIN has carefully researched the molecular sieve rotary flash dryer. In order to effectively improve the drying efficiency and save energy, our company has further improved the traditional flash dryer. Demonstration, design and production of high-efficiency polarized flash dryer, so that the drying efficiency and drying quality have been significantly improved, and has been praised by the majority of users. The high-efficiency classification flash dryer is composed of air heating system, crushing system, feeding system, host drying classification system, gas-solid separation system, control system and fan, etc. When working, the material enters the drying chamber through the screw feeder, and meets the hot air rotating at high speed in the drying chamber. The fine powder material is carried by the hot air to the upper end of the drying chamber. The crushing device is crushed, and the material is quickly dispersed. Under the action of centrifugal force, the product that has reached the dryness and a certain fineness is blown out of the classification device, and the material is dried in the process. Hig

Introduction to the operating procedures of the rotary vacuum dryer

A rotary vacuum dryer is a commonly used dryer. When the drying process is performed, the inside of the dryer is in a vacuum state, which is heated by heat transfer oil, hot water or steam into the jacket, and is in contact with the wet material in the box. The vaporized water after the wet material absorbs heat is pumped through the vacuum exhaust pipe through the vacuum pump, and the thermal efficiency is very high. The operation of the rotary vacuum dryer should also be carried out according to certain operating procedures. Rotary vacuum dryer 1. Check before starting: Before starting, it is necessary to check whether the position of the filter in the tank rises, whether the filter meets the technical requirements, and whether there is an industrial filter cloth. 2. Close the feed and discharge ports. Remove the cap of the feed tube and attach the feed tube. 3. Turn on the vacuum pump, when a certain degree of vacuum is reached, insert the feeding tube into the powder, suck it into the tank by vacuum, and feed the material according to the standard that the bulk density of the material does not exceed 40% of the total volume, and the material cannot be mixed with hard lumps shape. 4. After feeding, remove the feeding pipe and install the cover of the feeding pipe to ensure the sealing performance. 5. Open the valve of the vacuum pipeline to make the tank reach a certain degree of vacuum. Turn on the host start button to rotate the container around the horizontal axis at the appropriate speed. 6. Open the jacket heating steam inlet valve to heat and dry the material. It should rotate intermittently during drying to reduce the material agglomeration. 7. According to the operating conditions, when it is confirmed that the drying process of the materials in the tank has been cut off, cut off the steam and vacuum pipeline valves, and then slowly cool

Sodium Nitrate Disc Continuous Dryer

one. Process conditions 1.Material: Sodium Nitrate 2. Dry product output: 100T/20h 3. Initial moisture: 3% 4. Final moisture: 0.5% 5. Dry product particle size: 40-80 mesh 6. Bulk specific gravity of dry product: 1.0g/cm3 7. Drying temperature: 140--150℃ 8. Heating method: steam 0.5-0.6MPa 9. Feeding temperature: 20℃ 10. Discharge temperature: 80--100℃ (just finished drying) 11. Equipment material: 316 at the material contact, other A3 steel paint 12. Installation: Indoor 13. Power: 380V 50HZ 14. Environment: 20℃ 760mmHg φ=80% 2. Process calculation t feed=20℃ t discharge=100℃ Latent heat of vaporization of water: 595Kcal/kg Dry material specific heat capacity: 0.4 Kcal/kg.℃ (1) G wet = 5129kg/h (2) G dry = 5000 kg/h (3) Water evaporation: W water = 129kg/h (4) The necessary heat for evaporating water: Q1=76755kcal/h (5) The heat required for the heating of the dry material: Q2=160000kcal/h (6) The amount of heat necessary to raise the temperature of the water in the wet material: Q3=12310kcal/h (7) Total heat: Q total = 249065kcal/h (8) Steam consumption: S=520kg/h (9) Dry air consumption: L=921kg/h 3. Equipment selection and main technical parameters 1 PLG3000-24 type disc continuous dryer is planned to be selected according to the requirements 3.1 Working principle: The wet material is continuously fed into the hopper of the main machine, and is continuously added to the first layer of drying tray on the upper part of the dryer through the screw feeder. The thread flows over the surface of the drying pan, t

Spray drying technology - extending the shelf life of fruits and vegetables

A spray dryer is a highly recommended method for extracting powders from sugar-rich foods such as juices, extracts, etc. Spray drying is used for the purpose of reconstitution in beverages and released on a controlled basis. Spray drying is a common method for converting liquids to solids, and one of the most complex methods of fruit juice drying. Fresh fruit is perishable and has a limited shelf life. During the drying process, sugar crystallization is induced by chemical substances or physical methods, which can make the dehydrated powder more stable in terms of its functional properties. The purpose of drying fruit and vegetable juices is to produce a stable, easy-to-handle form of fruit and vegetable juice that quickly reverts to a high-quality product similar to the original. working principle Converts juice into powdered granules, meaning a significant reduction in volume and an effective way to extend shelf life. In addition, the product has excellent reconstituted quality as it is difficult to withstand temperatures above 100°C. Spray dryers use hot air and can use fairly high air temperatures as the drying temperature drops dramatically as water evaporates from the product being dried. The drying process can be completed in a short period of time, so that dry fruit powder can be prepared without thermal degradation even at relatively high air temperatures. The stickiness of sugar-rich products such as fruit juices is related to their low glass transition temperature (Tg). Some additives such as starch, gum arabic and maltodextrin are commonly used as support materials to increase the Tg of the product during spray drying. Before dehydration, the juice was diluted in distilled water until the total soluble solids content was reached. Once the total juice solids are normalized, carrier materials such as maltodextrin, acacia, waxy starch, etc. are added. The solution is also treated wi