Solid preparation granulation, drying, mixing automatic production line

project description: The company has designed a solid preparation granulation and drying line based on the characteristics of the domestic solid preparation production process. This equipment is a new type of online operation process. It effectively combines wet granulation, granulation, boiling drying, material conveying, mixing, etc. , greatly improve production efficiency, reduce labor costs, reduce possible pollution links, and make the production process meet GMP requirements. The new solid preparation granulation and drying line is suitable for the production of tablets, capsules, etc., as well as the production of granules. It has been applied in many pharmaceutical factories, and has achieved good results. Process description: Call for details. Equipment advantages: 1. In the traditional granulation and drying process, each equipment is set in a separate purification room, and the materials are sequenced back and forth in multiple purification rooms, which cannot avoid secondary pollution. The new solid preparation granulation and drying line adopts the method of airtight transportation, which ensures that the granulation and drying processes are completed in the same purification, which eliminates artificial secondary pollution, makes the granulation and drying processes more scientific and reasonable, and reduces equipment. Take up space and make the production process more in line with GMP requirements. 2. The user can match the corresponding type of equipment according to the actual output and dosage form, so that the output of the front and rear processes can achieve an ideal and reasonable configuration, and ensure the continuity and stability of production. 3. Through the man-machine interface control system, the process data of wet granulation and boiling drying granulation can be stored, collected and printed respectively. The par

What are the safety measures for the pressure spray dryer?

1. Explosion-proof measures of pressure spray dryer 1. A blasting disc and an explosion venting valve are set on the side wall of the main tower dried by the pressure spray dryer and on the top of the sub-a. 2. Install a safety movable door (also known as an explosion-proof door or an overpressure door). When the internal pressure of the pressure spray dryer is too large, the movable door will automatically open. 2. Attention should also be paid to the operation of the pressure spray dryer 1. First turn on the centrifugal fan of the pressure spray dryer, and then turn on the electric heating to check for air leakage. Normally, the cylinder can be preheated. The hot air preheating determines the evaporation capacity of the drying equipment, without affecting the quality of the drying material. to increase the suction temperature as much as possible. 2. During preheating, the valves at the bottom of the drying chamber of the pressure spray dryer and the discharge port of the cyclone separator must be closed to prevent cold air from entering the drying chamber and reducing the preheating efficiency.

Titanium dioxide special drying equipment

project description: In recent years, my country's titanium dioxide industry has increased several times in terms of production capacity, output and market demand, and my country's titanium dioxide industry has brought about a period of prosperity. Titanium dioxide is considered to be a white pigment with better performance in the world, and is widely used in coatings, plastics, papermaking, printing, ink, chemical fiber, rubber, cosmetics and other industries. Titanium dioxide is chemically stable and does not react with most substances under normal circumstances. Titanium dioxide has three crystals in nature: platy, anatase and rutile. The paint industry is a larger user of titanium dioxide, especially rutile titanium dioxide, which is mostly consumed by the paint industry. Coatings made of titanium dioxide have bright colors, strong tinting strength, strong dosage, low dosage, and many varieties, which can protect the stability of the medium, and can enhance the mechanical strength and adhesion of the paint film to prevent cracks. Prevents the penetration of UV rays and moisture and prolongs the life of the paint film. The plastics industry is the second largest user. Adding titanium dioxide to plastics can improve the heat resistance, light resistance and weather resistance of plastic products, improve the physical and chemical properties of plastic products, enhance the mechanical strength of products, and prolong service life. The paper industry is the third largest user of titanium dioxide. As a paper filler, it is mainly used in high-grade paper and thin paper. Adding titanium dioxide to the paper can make the paper have good whiteness, good gloss, high strength, thin and smooth, no penetration during printing, and light weight. Titanium dioxide for papermaking generally uses anatase titanium dioxide without surface treatment, which can act as a fluorescent whitening agent and enhance the whiteness of paper. However, the laminated

What are the original causes of stickiness in spray dryer drying? How to control?

Spray-dried foods fall into two categories: non-sticky and sticky. Non-sticky ingredients are easy to spray dry with simple dryer design and free-flowing final powder. Examples of non-sticky materials include egg powder, milk powder, solutions such as maltodextrins, gums, proteins. In the case of sticky foods, there are drying problems under normal spray drying conditions. Sticky food often sticks to the walls of the dryer, or becomes useless sticky food in drying chambers and transport systems, with operational problems and low product yields. Sugary and acidic foods are typical examples. Stickness is a phenomenon encountered during the drying process of food materials rich in sugar and acid are often sprayed. Powder stickiness is a cohesive adhesive property. It can be explained in particle-particle viscosity (cohesion) and particle-wall viscosity (adhesion). A measure of the force with which powder particles bind is due to their internal property known as cohesion, which forms lumps in the powder bed. Therefore, the force required to break down the powder agglomerates should be greater than the cohesive force. Blocking is an interfacial property, the tendency of powder particles to adhere to the walls of spray drying equipment. The cohesion and adhesion are key parameters for designing drying and drying conditions. The surface composition of powder particles is primarily responsible for stickiness issues. The cohesive force and adhesion tendency of powder particle surface materials are different. Because drying requires a large amount of solute to be transferred to the particle surface, it is bulk. Two sticky characteristics (cohesion and adhesion) can coexist in spray-dried sugar-rich food materials. The cohesion between particles is cohesive force is the formation of fixed liquid bridges, moving liquid bridges, mechanical interlocking and electrostatic attraction between molecules and solid bridges. The main cause of powder particle sticking wi

Special drying project for glyphosate

Project description: Glyphosate, also known as herbicide, is a non-volatile white solid with a specific gravity of 0.5. It is a non-selective, non-residue herbicide. It is very effective against perennial root weeds. It is widely used in rubber, mulberry, Tea, orchards and sugarcane fields. In view of the characteristics of glyphosate drying process, the company has developed a special dryer for glyphosate flash evaporation. The special dryer for glyphosate is a new type of drying equipment developed by our company and the Shenyang Chemical Research Institute of the Ministry of Chemical Industry on the basis of digesting and attracting foreign equipment and technologies to dry paste-like, filter-cake-like and heat-sensitive materials. Device Description: The hot air enters the bottom of the dryer tangentially, and forms a strong rotating wind field driven by the agitator. The paste material enters the dryer from the screw feeder. Under the strong action of the high-speed rotating stirring paddle, the material is impacted and dispersed under the action of friction and shearing force. ,dry. The dehydrated dry material rises with the hot air flow, and the large particles are intercepted by the grading ring, and the small particles are discharged from the center of the ring to the outside of the dryer and recovered by the cyclone separator and dust collector. , fall back to the bottom to be crushed and dried. Features: The flash dryer has the advantages of high technology content, high standardization, environmental protection, safety, low consumption, simple maintenance, etc. In the design structure: ①The bottom of the dryer is equipped with an inverted cone structure, so that the drying gas flow section gradually expands from bottom to top, the bottom airflow is relatively large, and the upper airflow is relatively small, so as to ensure that the large particles in the lower part are in a fluid

Safety Problems of Double Cone Vacuum Dryer

Double cone rotary vacuum dryer has its own unique advantages, but there are many safety issues that we need to pay attention to in the process of use. 1. If the items in the double cone rotary vacuum dryer are wet, add a filter between the empty box and the vacuum pump to prevent the wet gas from entering the vacuum pump and cause the vacuum pump to malfunction. 2. The vacuum double-cone rotary vacuum dryer should be used in an environment with relative humidity ≤85%RH, non-corrosive vacuum drying gas, and no strong vibration source and strong electromagnetic field around. 3. After repeated use, there will be a phenomenon that the vacuum cannot be drawn. At this time, the door sealing strip should be replaced or the distance of the door buckle on the box should be adjusted to solve the problem. When the temperature of the empty double cone rotary vacuum dryer is higher than 200 ℃, there will be slow air leakage (except 6050, 6050B, 6051, 6053). At this time, open the back cover of the double cone rotary vacuum dryer, loosen the heater base with an Allen wrench, replace the sealing ring or tighten the heater base to solve the problem. 4. The vacuum pump can't work for a long time. When it is necessary to realize the double cone rotary vacuum dryer project, the vacuum valve should be closed first, and then the vacuum pump should be closed. When the vacuum is less than the requirements of the double cone rotary vacuum dryer project, the vacuum valve should be opened again. , The vacuum pump power supply can continue to pump the air into the vacuum state and prolong the service life of the vacuum pump. 5. If the double-cone rotary vacuum dryer is turned over and the material is changed to light weight and small particles (small particles), an insulating mesh should be installed at the vacuum port in the working room to prevent the vacuum pump (or solenoid valve) from being damaged by the dou

Benefits of Juice Powder Spray Dryer

Spray-dried fruit juice powder has the characteristics of good natural fluidity and low hygroscopicity, which matches the richness of typical fresh fruits, and has a unique natural flavor and sweet and sour taste. Spray-dried fruit juice powder adds an authentic aroma to cooked food, making it even more delicious. Processed by a spray dryer, the powder is moisture-free, but at the same time has good solubility and adds an intense color, making it ideal for use as an additive in a variety of delicacies and condiments. Next, let's take a look at the benefits of using a spray dryer to process juice powder. Benefits of Juice Powder Spray Dryer 1. Provide pure natural juice powder, easy to use and long shelf life 2. Save time and reduce waste 3. Maintain the quality and flavor of the material 4. Extremely cost-effective Our spray dryers can be used in a variety of applications in the food industry. Please let us know if you are interested in our spray dryers or have any questions. Don't hesitate to contact us!

Cleaning method of centrifugal spray dryer

The high-speed centrifugal spray dryer should also be cleaned regularly. Cleaning can effectively maintain the efficient operation of the high-speed centrifugal spray drying. For cleaning, there are different degrees of cleaning, and the cleaning methods used are different. The following is about the high-speed centrifugal spray dryer. Some cleaning methods are introduced. Reasons for cleaning: In order to ensure the cleaning of the drying tower body and its pipes and all parts in contact with the finished product, regular cleaning equipment is necessary. When the product variety is changed, or the high-speed centrifugal spray drying equipment has been out of production for more than 24 hours and has not been cleaned, a comprehensive and thorough cleaning should be performed. The cleaning method can be dry cleaning, wet cleaning or chemical cleaning according to the actual situation. Dry Cleaning: Use a brush, vacuum cleaner (for small dryers). Wet cleaning: wash with hot water at 60~80℃. Chemical washing: wash with lye, acid and various detergents. Among them, pickling: make HNO3 into a solution with a concentration of 1~2%, and the heating temperature does not exceed 65 °C for washing, and then wash with water; alkali washing: make NaOH into a solution with a concentration of 0.5~1%, and the heating temperature does not exceed 65 ℃ for washing, then rinse with clean water. Different sizes and types of high-speed centrifugal spray dryers should also choose the most suitable method when cleaning, so that they can be cleaned better and will not affect the drying of subsequent products.

What are the characteristics of disc dryer

What are the characteristics of the disc dryer: The disc dryer is a typical conduction heating type dryer. The material is heated only by heating the wall surface. The drying process does not use or only uses a small amount of dry gas to carry moisture. The heat lost due to exhaust air is very small, and the thermal efficiency is high. 100%, in practice, it can generally reach more than 60%-80%, and the energy consumption is low, and the unit steam consumption is 1.3-1.6kg steam/kg water. (1) Easy to control and strong applicability 1. By adjusting the thickness of the material layer, the rotational speed of the main shaft, the number of rake arms, the type and size of the rake blades, the drying process can reach an ideal state. 2. Each layer of drying tray can pass through the heating medium or cold medium separately to heat or cool the material, and the temperature of the material can be controlled accurately and easily. 3. The residence time of the material can be adjusted precisely. 4. The flow direction of the material is single, there is no back-mixing phenomenon, the drying is uniform, the quality is stable, and no further mixing is required (2) Low energy consumption 1. The material layer is very thin, the spindle speed is low, the power required by the material conveying system is small, and the power consumption is low. 2. Drying by conduction heat, high thermal efficiency and low energy consumption. (3) Simple and easy to operate 1. The operation of starting and stopping the dryer is very simple. 2. After the feeding is stopped, the raking blade conveying the material scale can quickly empty the material in the dryer. 3. The inside of the equipment can be cleaned and observed very carefully through the special large-sized inspection door's sight glass. (4) The operating environment is good, the solvent can be recycled,

Crushing vacuum dryer in rotary vacuum dryer

Rotary vacuum dryers are widely used in industry, mainly for drying small pieces of materials and fibrous materials. Since the rotary vacuum dryer has a certain shape, the material must be kept in a certain shape after drying. The rotary vacuum dryer consists of a circulating fan, a heating device, an independent or public fresh air pump system and an exhaust gas discharge system. Therefore, operating parameters such as the number of drying media, temperature, humidity and exhaust gas circulation can be independently controlled to ensure the reliability and operating conditions of the vacuum dryer. The general material test vacuum dryer can provide customers with a technical parameter report in the shortest time, so that customers can choose the model and specifications of the equipment according to production requirements. Among the vacuum dryers, there are also different types of rotary vacuum dryers, which also have different uses. Crushing rotary vacuum dryer is one of them. The crushing vacuum dryer is a dryer based on the improvement and experiment of the rotary vacuum dryer, adding two crushing devices. A crushing device with an additional crushing device can be designed according to user requirements. The crushing device of the rotary vacuum dryer can effectively prevent the agglomerated materials and control the temperature during the drying process; adding a crushing device shortens the drying time; does not destroy the performance of the material; adding a crushing device, drying and grinding can be used in one Completed by one machine, packaging directly. It is widely used in the drying of easily agglomerated materials and the drying of crystalline materials such as chemical industry, medicine, food and so on. The above is the introduction of rotary vacuum dryer. If you have other questions about rotary vacuum dryer, please contact us.

How does the belt dryer work for pigment drying

Belt dryers are generally suitable for drying strip, flake or granular materials with good air permeability. They have high drying efficiency and high evaporation intensity. They are mainly used for drying small pieces of materials, such as dehydrated vegetables, Chinese medicine pieces, and pigments. , has a wide range of industrial applications. Today, I will talk about how the belt dryer works in pigment drying. When drying the pigment, first we need to spread the material evenly on the mesh belt, and use the transmission device to move it in the belt dryer. The belt drying cabinet is divided into several units, which can independently control the operating parameters. Each unit has hot air circulation and dehumidification fans. The regulating valve can control the exhaust gas. in the receiver. The belt desiccant has a simple structure, convenient operation and flexible configuration. Its air distribution device makes the distribution of hot air relatively uniform, which can ensure uniform product quality. There are also a variety of product operations for belt dryers. If you want to know more, please contact Griffin Co., Ltd. The company specializes in various types of dryers and complete sets of drying lines, integrating scientific research, design, production and service. , The factory is well-equipped with complete varieties.

Daily safety maintenance of rotary vacuum dryer

The daily maintenance and management of the rotary vacuum dryer is an important work to ensure safety. Once the vacuum dryer fails, it will cause electric shock, fire and explosion accidents, which are related to the personal safety and property safety of the staff. Therefore, the maintenance of the rotary vacuum dryer is more important. 1. The common maintenance problems in the dryer mainly include open circuit, short circuit, bad contact, etc. Protective measures should be taken before maintenance. According to the actual situation, analyze the fault cause and fault location. Find out how to solve problems and how to avoid them. 2. The maintenance of the rotary vacuum dryer should be based on the condition and form of the line and the analysis of the mechanical operation to determine which ones are prone to failure. In order to ensure the safety of the equipment, the occurrence frequency of drying engineering failures should be recorded and analyzed. 3. The maximum temperature of molybdenum disulfide complex calcium-based grease is 150 degrees in rolling bearings. Checks are required at least once a month. After the grease is found to be dry, it should be cleaned immediately and replaced with new grease. 4. The cylindrical worm reducer should be maintained according to its instructions; after the filter is dried in the tank once, the surrounding powder should be removed to make the filter body smooth; the transmission chain should be lubricated at least once a month. 5. In the rotary vacuum drying equipment, the rotary bearing sealing ring used between the vacuum tube and the main engine needs to be checked regularly, and should be replaced immediately when leakage is found. 6. The operating time of the rotary vacuum drying equipment is usually six months to one year, and it should be checked and repaired. When repairing, it should be assembled according to the original confi

Kaolin Clay Spray Dryer

1. The customer provides basic parameters: 1. Material: Kaolin 2. Raw material status: liquid 3. Feed water content: 60% 4. Product moisture content: ≤15% 5. Evaporated water: 300Kg/h 6. Heat source: direct-fired natural gas hot blast stove 7. Sample condition: inlet air temperature of drying tower: 600℃, outlet air temperature of drying tower 300℃ 8. Equipment material: The material contact part is made of stainless steel 304, and the rest is made of carbon steel. Kaolin is also called white clay, china clay. A clay mineral. A mineral mainly composed of fine crystals of kaolinite. It is the product of a variety of crystalline rocks (granite, gneiss, etc.) damaged by long-term natural weathering. Pure kaolin (Al2O3·2SiO2·2H2O) is white, generally contains impurities, and is gray-white or light yellow. The density is 2.56~2.60g/cm3. The melting point is about 1785°C. Soft and less malleable. Easy to disperse in water or solution, with a greasy feel and an earthy taste. 2. Material balance and heat balance: 1. Output: W1=267kg/h 2. Processing capacity: W2 =567kg/h 3. Water evaporation: ΔW=W2-W1=300kg/h 4. The inlet air temperature t1=600℃, the outlet air temperature t2=300℃, the wet material temperature θ1=15℃, the product temperature θ2=250℃, and it is assumed that the material specific heat Cs=0.4kcal/kg.℃. Then the heat required to evaporate water is: Q1=214500kcal/h, The heat absorbed by the product heating up is: Q2=25098kcal/h 5. Taking the heat loss in the drying process as 15%, the air volume required for drying is: G=3827kg/h. Fourth, the main equipment selection: a) Calculation of centrifugal spray tower: 1. Calculation of the average de

Technical requirements for the manufacture of tunnel type hot air circulation oven

The tunnel type hot air circulation oven is a drying and sterilizing machine developed and manufactured by China's introduction of foreign advanced technology. The excellent performance of the tunnel-type hot air circulation oven comes from the unique structural design and technical requirements of the oven. There are several important elements in the technical design of the tunnel type hot air circulation oven: 1. Efficient heating method: The tunnel oven will consume a lot of heat when it works. Reasonable selection of heating elements and scientific distribution of heating elements are very critical. Choosing the right heating method will play a very important role in saving energy and reducing consumption. The heating elements of the tunnel heating furnace include: electric heating tube, far-infrared quartz tube, radiant tube, steam radiator, heat conduction oil heat conduction, hot water heating, external heating, air supply, etc. 2. Good thermal insulation performance, small temperature rise on the surface of the tunnel oven, less heat dissipation, correct selection of thermal insulation materials and appropriate thickness of thermal insulation layer, and preventing heat energy dissipation are the only means to ensure the temperature. 3. Stable transmission system: The configuration of the drive motor of the tunnel oven must be accurate, and the power should be reduced as much as possible on the premise of ensuring the torque. Regardless of the conveying method, the conveyor belt will not deviate. Generally speaking, the transmission methods of tunnel ovens include chain transmission, mesh belt transmission, mesh chain transmission, mesh transmission, chain transmission, vibration transmission, pneumatic conveying, etc., which are mainly based on the shape of the material, the material tray or the baking temperature. . 4. Precise electrical control: The cost of the electrical control system of the tun

Talking about the advantages and disadvantages of disc dryer

Disc dryer, also known as multi-layer disc dryer, is a multi-layer disc, harrow stirring, vertical continuous drying device, which belongs to the category of contact dryers with heat conduction as the mainstay. The disc dryer absorbs the advantages of heat conduction drying, and uses a floating plow-type harrow blade rotary stirring device in its structure. The temperature of the layer heating plate, as well as the final cooling and cooling measures, overcome the shortcomings of the fixed bed conduction drying. The advantages and disadvantages of the disc dryer are as follows: 1. Mechanical conveying of materials, continuous production, controllable adjustment of processing capacity; 2. High drying efficiency, the average evaporation intensity is about 5-20Kg/h; 3. Vertical installation, perfect heat preservation, high utilization rate of heat source and waste heat, only 1.1-1.4Kg steam per kilogram of water to evaporate; 4. Small footprint, compact structure and simple equipment installation; 5. The exhaust emission is small, and the amount of dust flying is small; 6. The temperature of each layer of heating plate is controllable, and it is used for drying and cooling; 7. If combined with other equipment, the solvent can be recovered, and it can also be used in the preheating process of various materials such as roasting and sublimation. Disadvantages of disc dryers are as follows: 1. The mechanical transmission mechanism is relatively complex, with many moving parts, and the processing requirements are relatively high; 2. The heating plate cavity is under a certain pressure, more materials are used, and equipment investment is large; 3. If the material is brittle and not suitable for materials with high particle size requirements; 4. It is not suitable for heat-sensitive m

Centrifugal Spray Dryer - Application Scope

High-speed centrifugal spray dryer is a special drying equipment suitable for drying liquids such as emulsions, suspensions, pastes and solutions. In polymers and resins: dyes, pigments: ceramics, glass, rust removers, insecticides: carbohydrates, dairy products: detergents and surface actives; fertilizers: drying of organic compounds and inorganic compounds , performed particularly well. Spray drying is a preferred process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet precise criteria. Application range of centrifugal spray dryer: ⑴Saccharides: corn steep liquor, corn starch, glucose, pectin, maltose, potassium sorbate, etc. (2) Ceramics: alumina, ceramic tile materials, magnesia, talc, etc. (3) Food industry: fat-rich milk powder, gluten, cocoa milk powder, milk replacer, egg white (yellow), blood hunting powder, etc. ⑷ Food and plant juice: oat, chicken juice, coffee, instant tea, flavoring, meat, protein, soybean, peanut protein, hydrolyzate, etc. ⑸Plastic resin: AB, ABS emulsion, urea-formaldehyde resin, phenolic resin, sealant (urea) formaldehyde resin, polyethylene, polyvinyl chloride, etc. ⑹Chemical industry: sodium fluoride (potassium), basic dyes and pigments, dye intermediates, compound fertilizers, formaldehyde silicic acid, catalysts, sulfuric acid agents, amino acids, white carbon black, etc.

What are the advantages of a double cone vacuum dryer?

Double cone vacuum dryer has large processing capacity, low fuel consumption and low drying cost. The double cone dryer has the characteristics of high temperature resistance, and can use high temperature hot air to quickly dry materials. Generally, the high-end material is fed, and the high-temperature hot flue gas enters the cylinder in parallel with the material. When the cylinder rotates, the material flows downward due to gravity. The inner wall of the drum is provided with a copy board, which picks up and throws the material, so that the contact surface between the material and the air flow expands, thereby increasing the drying speed and promoting the advancement of the material. Collect dry product from the bottom. vacuum dryer Double cone vacuum dryer drying series: 1. Electromagnetic switch, stainless steel cylinder, internal polishing; 2. PID control, LED status display, temperature control accuracy can reach 1. 3. Sewage discharge design, uniform heat dissipation, more stable temperature and higher drying efficiency; 4. Double-layer overheat protection device to reduce accidents caused by human or mechanical failure; 5. The stainless steel dryer is made of stainless steel in contact with the raw materials, without dead ends, and the materials are thoroughly cleaned. 6. The hopper adopts double-layer insulation hopper to reduce heat loss; 7. Automatically turn on and off within a week, saving money; 8. The circuit design complies with CE safety standards. The double cone vacuum dryer consists of several independent unit components. Each unit section includes a circulating fan, a heating unit, a separate or shared fresh air intake system and an exhaust system. The double cone vacuum dryer can independently control the drying medium quality, temperature, humidity and exhaust gas circulat

Egg white spray dryer

Egg white spray dryer 1. Parameters and requirements provided by customers: 1. Material name: egg white 2. Processing capacity: 2000 Kg/12h 3. Raw material moisture content: 75%, product moisture content: 15% 4. Evaporated moisture: 120Kg/h 5. Inlet air temperature: 150℃, exhaust air temperature: 80℃ 6. Heating method: steam 7. Product collection: cyclone + bag filter 8. Equipment material: stainless steel at the material contact point 2. Determination of process parameters: 1. Hot air parameters: Normal temperature: t0=15℃, inlet air temperature: t1=150℃, exhaust air temperature: t2=80℃ Air moisture content: d0=0.01kg water/kg dry air 2. Material parameters: Processing capacity: W processing = 170 Kg/h Raw material moisture content: ω1=75%, product moisture content: ω1=15% Raw material temperature: θ1=10℃, product temperature after drying: θ2=~50℃ 3. Material balance: 1. Dehydration amount: W water = W treatment × (ω1-ω2)/(1-ω2) = 120 ㎏/h 2. Output: W = 170-120 = 50 ㎏/h 4. Heat balance calculation and air volume calculation: 1. Heat required for dehydration: Q1=74520 kCal/h 2. Heat required to heat up the product: Q2=800 kCal/h 3. Equipment heat loss (take the peripheral heat loss in the drying process as 15%): Q3=11298 kCal/h 4. Hot air volume: L=(Q1+Q2+Q3)/(I1-I2′)=5061 kg/h 5. Check calculation of exhaust air parameters: Exhaust air humidity content: d2=0.01+120/5061=0.0337 kg water/kg dry air 5. Related design of spray drying tower: 1. Selection of spray head: According to parameters

Analysis of Technical Characteristics of Disc Continuous Dryer Adapting to Materials

Analysis of Technical Characteristics of Disc Continuous Dryer Adapting to Materials The disc dryer is suitable for materials: drying pyrolysis combustion cooling reaction sublimation (1) Organic chemical products (2) Inorganic chemical products (3) Medicine and food (4) Feed and fertilizer Analysis of technical characteristics of disc dryer: (1) Drying tray 1. Design pressure: generally 0.4MPa, up to 1.6MPa. 2. Working pressure: generally ≤0.4MPa, up to 1.6MPa. 3. Heating medium: steam, hot water, heat transfer oil, hot water heating when the temperature of the drying plate is 100℃, ≤0.4MPa saturated steam or superheated steam heating when the temperature is 100℃~150℃, and heat conduction when the temperature is 150℃~320℃ Oil heating, when > 320 ℃, it can be heated by electricity, heat conduction oil, molten salt, etc. (2) Material conveying system 1. Spindle speed: 1 to 10 rpm, electromagnetic or variable frequency stepless speed regulation. 2. Rake arms: There are 2 to 8 rake arms fixed on the main shaft on each layer of drying tray. 3. Rake blade: articulated on the rake arm, it can float up and down with the disc surface to keep in contact, and there are various forms. 4. Rolling: For materials that are easy to agglomerate and need to be pulverized, adding rolling at an appropriate position can strengthen the heat transfer and drying process. (3) The shell has three types of normal pressure, airtight and vacuum 1. Atmospheric pressure type: cylindrical or octagonal prism type, with integral and split structures. The main pipeline for the inlet and outlet of the heating medium can be inside the casing or outside the casing. 2. Airtight type: cylindrical shell, can withstand 5Kpa internal pressure, the main pipeline of heating medium inlet and outlet can be inside the shell

Anhydrous sodium sulfate air dryer

Sodium sulfate, inorganic compound, sodium sulfate decahydrate, also known as Glauber's salt, high-purity, fine-grained anhydrous called Yuanming powder. Yuanming powder, white, odorless, bitter-tasting crystal or powder, hygroscopic. Appearance is colorless, transparent, large crystals or small granular crystals. Mainly used for making water glass, glass, enamel, pulp, refrigeration mixture, detergent, desiccant, dye thinner, analytical chemical reagent, pharmaceuticals, etc. Some manufacturers asked our company to design a special airflow dryer for anhydrous sodium sulfate. Our company recommends an airflow dryer based on the characteristics of anhydrous sodium sulfate. The airflow dryer is a large-scale drying equipment. It adopts the principle of instant drying, and uses the rapid movement of the heat-carrying air to drive the wet material, so that the wet material is suspended in the hot air, which strengthens the entire drying process and improves the transmission efficiency. The rate of heat and mass transfer, the unbound water can be almost completely removed from the air-dried materials, and the dried materials will not be deteriorated, and the output can be significantly improved compared with the general dryer drying, and users can achieve higher results in a short period of time. economic benefits. Drying parameters: Moisture content before drying Moisture content 4~6% Moisture content after drying ≤0.2%; Feed temperature: 60- 90°C

Calcium fluoride ball flap belt dryer

Under the continuous high requirements of the market for equipment quality, and in the contemporary era that pays attention to environmental protection, GRIFFIN dryer enterprise selection recommends calcium fluoride ball flap belt dryer. Technical personnel and senior management personnel, and has a group of sophisticated production personnel. Their capabilities in research, design, service, etc., they have devoted themselves to research over the years, summed up again and again in practice, and have a deep understanding that "God rewards hard work" is a strong guarantee for the quality of customers' products! Calcium fluoride is an inorganic compound that is colorless crystals or white powder. It is insoluble in water, slightly soluble in inorganic acid, and reacts with hot concentrated sulfuric acid to generate hydrofluoric acid. Calcium fluoride is generally prepared by the action of calcium carbonate and hydrofluoric acid or by repeatedly treating fluorite powder with concentrated hydrochloric acid or hydrofluoric acid. The natural calcium fluoride mineral is fluorite or fluorite, which is often gray, yellow, green, purple and other colors, sometimes colorless, transparent, vitreous, brittle, and has obvious fluorescence phenomenon. Very pure fluorspar is used to make specialty lenses. Fluorite is mainly used as a flux for metal smelting; when drinking water contains 1-1.5ppm calcium fluoride, it can prevent and treat dental diseases. Calcium fluoride ball flap belt dryer, why is the flap belt dryer called flap? Because the flap running in the box walks to the head or tail of the machine, it will turn over automatically, that is, it will run back and forth twice on the same floor, while the mesh belt dryer will only run once. If they are all four-layer dryers, the flap of the flap dryer will run and dry eight times in the box, while the mesh belt of the mesh belt dryer will only run and dry four times in the box. The

How the hot air flows in a fast spin flash dryer

The fast spin flash dryer is a dryer that uses hot air to dry materials. In the fast spin flash dryer, the air is burned and heated in a hot blast furnace, and the hot air is sent to the air inlet of the spin flash tower, and then cut into the fast spin flash dryer for drying. room. The material is quickly dried under the combined action of stirring and crushing and heating by hot air in the rapid rotary flash dryer. The fast-flowing hot air is the source of heat for drying materials, so how does the hot air flow in the dryer? There is convection and flow of hot air in the lower part of the drying chamber of the fast spin flash dryer, and the convection and air heat transfer around the initial rough material is relatively intense. Under the action of hot air and stirring, the crushed fine-grained materials are parallel to the hot air in the drying chamber, and the drying process can be completed almost instantaneously. The overall drying process is to use air drying with high temperature and low humidity. After entering the material, it is broken at the bottom, and then rises up under the rotating hot air. After drying, the material is discharged. Fast spin flash dryer The design of the fast spin flash dryer is scientific and reasonable, which can perfectly complete the drying task.

Maintenance level classification of rotary vacuum dryer

When the rotary vacuum dryer is in use, some faulty products may be caused due to improper use or disrepair, so maintenance must be carried out. According to the degree of maintenance, it can be divided into three levels, minor repair, medium repair and Overhaul, in actual operation, according to the level of maintenance, the severity of the fault can be judged. The following is the division of the maintenance level of the rotary vacuum dryer. Minor repairs: 1. Check and tighten all connecting bolts; 2. Check the corrosion of the vertebral body vacuum pipeline, repair or replace the lubricating oil if necessary; 3. Check and replace the mechanical transmission parts; 4. Check and adjust the hydraulic oil hydraulic brake 5. Check and repair the seals, replace the seals if necessary; 6. Check and repair the electrical system and display instrument; 7. Remove the dirt from the heating sleeve. Medium repair: 1. Including minor repairs; 2. Checking and replacing rotary joints and packing seals; 3. Checking and replacing steam and condenser pipes; 4. Repairing or replacing mechanical seals; 5. Checking exhaust pipe wear, if necessary Replacement; 6. Replace the polytetrachloroethylene packing sealing ring on the exhaust side; 7. Replace the hydraulic oil in the hydraulic brake; 8. Replace the rubber sealing ring of the water inlet, exhaust port and exhaust pipe; 9. Check and replace Bearings and Bearing Lubricants Section. Overhaul: 1. Including medium repair; 2. Disassembly of the entire body; 3. Check, repair or replace the drying tank; 4. Check, repair or replace the transmission gear; 5. Check, repair or replace the transmission shaft tube; 6 .Overhaul the transmission part; 7. Carry out anti-rust treatment and paint on the frame and other components. According to the degree of maintenance of the rotary vacuum dryer, the value of repair or replacement is also different. At this time, we need to comprehensivel