Summary of several common drying equipment
XZG series rotary flash dryer 1, working principle The hot air tangentially enters the bottom of the dryer and is driven by the agitator to form a powerful rotating wind field. The paste material enters the dryer by 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 shear. The block material is rapidly pulverized, fully contacted with hot air, and heated. dry. The dehydrated dry material rises with the hot gas flow, and the classification ring intercepts the large particles. The small particles are discharged from the center of the ring to the outside of the dryer, and are recovered by the cyclone separator and the dust collector. The dry particles or the bulk material are subjected to centrifugal force to the wall. , fell to the bottom and was crushed and dried. 2, characteristics (1) The organic combination of swirling, fluidizing, spraying and pulverizing and grading techniques. (2) The equipment is compact, small in size, high in production efficiency, continuous production, and realizes “small equipment, large productionâ€. (3) The drying strength is large, the energy consumption is low, and the thermal efficiency can reach more than 70%. (4) The material has a short residence time and good finished product quality, which can be used for drying heat sensitive materials. (5) Negative pressure or micro-negative pressure operation, good airtightness, high efficiency and elimination of environmental pollution. 3, technical parameters 4, the scope of application XZG series rotary flash dryer is a new type of drying equipment developed for drying paste, filter cake and heat sensitive materials on the basis of digesting and absorbing foreign advanced equipment and technology. Applications PLG series disc continuous dryer 1, working principle The wet material is continuously fed from the feeder to the first layer of the drying tray on the upper part of the dryer, and the raking arm with the raking leaves is rotated to continuously slap the material. The material travels along the exponential spiral across the surface of the drying pan. The material on the small drying pan is transferred to the outer edge and falls to the outer edge of the large drying pan below the outer edge. The material moves inward on the large drying tower and falls from the middle. The spout falls into the next small drying pan. The size of the drying tray is alternately arranged up and down, and the material is continuously flowed through the entire dryer. A heating medium is introduced into the hollow drying tray. The heating medium is in the form of saturated steam, hot water and heat transfer oil. The heating medium enters from one end of the drying tray and is led out from the other end. The dried material falls from the last layer of the drying tray to the bottom layer of the casing, and is finally transferred to the discharge port by the rakes. The moisture fraction escapes from the material. The moisture is discharged from the drain port provided on the top cover, and the moisture of the vacuum type disc dryer is extracted by a vacuum pump provided on the top cover. The dry material discharged from the bottom layer can be directly packaged. It can improve the drying production capacity, dry paste and heat sensitive materials by adding fin heater, solvent recovery condenser, bag filter, dry material back mixing wood structure, induced draft fan and other auxiliary machines. The solvent is recovered and can be subjected to pyrolysis and reaction operations. 2, characteristics (1) Easy regulation and applicability The drying process is optimized by adjusting the thickness of the layer, the spindle speed, the number of arms, and the size of the 耙 leaf type. Each layer of drying tray can be separately passed into a heat medium or a cold medium to heat or cool the material, and the temperature control of the material is accurate and easy. The residence time of the material can be precisely adjusted. The material flow direction is single, no back mixing phenomenon, uniform drying, stable quality, no mixing. (2) Simple and easy to operate The driving and parking operation of the dryer is very simple. After the feed is stopped, the transfer material can quickly drain the material in the dryer. The equipment can be carefully cleaned and observed through the special large-scale inspection door mirror. (3) low energy consumption The material layer is very thin, the spindle speed is low, and the power required for the material to shut off the system is small, and the power consumption is small. Drying with conduction heat, high thermal efficiency and low energy consumption. (4) The operating environment is good, the solvent can be recovered, and the dust emission meets the requirements. Atmospheric pressure type: Due to the low airflow speed in the equipment and the high and low humidity in the equipment, the dust is difficult to float to the top of the equipment, so the exhaust gas from the exhaust gas discharged from the top exhaust port contains almost no dust. Closed type: equipped with a party solvent recovery unit, which can easily recover organic solvents in the carrier gas. The solvent recovery device is simple, and the recovery rate is X. For flammable, explosive, toxic and oxidizable materials, nitrogen can be used as a carrier gas to carry out half-cycle circulation for safe operation. It is especially suitable for the drying of flammable, explosive and toxic materials. (5) Easy installation and small footprint The dryer is completely shipped from the factory, and the whole transportation is carried out. It only needs to be hoisted in place, and the installation and positioning is very easy. Due to the vertical arrangement of the drying discs and the vertical installation, the drying area is large and the floor space is small. 4, the scope of application The disc continuous dryer is an efficient conductive continuous drying equipment. Its unique structure and working principle determine its high efficiency, low energy consumption, low floor space, simple configuration, convenient operation control and good operating environment. It is widely used in chemical, pharmaceutical, pesticide, food, Drying operations in industries such as feed, agricultural and sideline products processing. It has been well received in practice in various industries. LPG high speed centrifugal spray dryer 1, working principle The air is filtered and heated into the air distributor at the top of the dryer, and the hot air enters the drying chamber in a spiral shape evenly. The liquid is sprayed into a very fine misty liquid droplet through a high-speed centrifugal atomizer at the top of the tower body, and it can be dried into a finished product in a short time by cocurrent contact with hot air. The finished product is continuously discharged from the bottom of the drying tower and the cyclone, and the exhaust gas is vented by the fan. 2, characteristics (1) The drying speed is fast, the surface area of ​​the liquid is greatly increased after atomization, and in the hot air flow, 95%-98% of the water can be evaporated instantaneously, and the drying time is only a few seconds, which is especially suitable for drying the heat sensitive material. (2) The product has good uniformity, fluidity and solubility, and the product has high purity and good quality. (3) The production process is simplified and the operation and control are convenient. For liquids with a moisture content of 40-60% (up to 90% of special materials), the products can be dried into powdered products at one time. After drying, no pulverization and screening are required, which reduces the production process and improves the purity of the products. The particle size, bulk density and moisture of the product can be adjusted within a certain range by changing the operating conditions, and the control and management are very convenient. 3, technical parameters 4, the scope of application Spray drying is the most widely used process in the liquid process forming and drying industry and is suitable for the production of powdered, granulated or lumpy solid products from solutions, emulsions, suspensions and plastic paste liquid materials. Spray drying is the best choice if the particle size, moisture content, bulk density and particle shape of the finished product are critical. Chemical industry: sodium fluoride (potassium), basic dye pigments, dye intermediates, compound fertilizers, formaldehyde silicic acid, catalysts, sulfuric acid agents, amino acids, white carbon black, etc. Plastic resin: AB, ABS emulsion, urine aldehyde resin, phenolic resin, dense (urea) formaldehyde resin, polyethylene, polyvinyl chloride and the like. Food industry: fat-rich milk powder, scorpion, cocoa milk powder, milk replacer powder, blood-hunting powder, egg please (yellow) and so on. Food and plants: oats, chicken juice, coffee, instant tea, flavored meat, protein, soy, peanut protein, hydrolysate, etc. Sugar: corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc. Ceramics: alumina, tile materials, magnesium oxide, talc powder. ZLG series vibrating fluidized bed dryer 1, working principle The material enters the machine from the feeding port. Under the action of the vibration force, the material is thrown along the horizontal fluidized bed and moves forward continuously. The hot air passes through the fluidized bed and exchanges heat with the wet material, and the humid air is removed by the cyclone. It is discharged from the air outlet, and the dry material is discharged from the discharge port. 2, characteristics (1) The material is evenly heated, the heat exchange is sufficient, the drying strength is high, and the energy saving is about 30% than that of the ordinary dryer. (2) The vibration source is driven by a vibration motor, which is stable in operation, convenient in maintenance, low in noise and long in life. (3) The fluidity is stable, and there is no dead angle and blow through phenomenon. (4) The adjustability is good, the adaptable surface is wide, the thickness of the material layer and the moving speed in the machine can be steplessly adjusted by the amplitude change. (5) It has small damage to the surface of the material and can be used for the drying of fragile materials. When the particles are irregular, the working effect is not affected. (6) The fully enclosed structure is adopted to effectively prevent cross-contamination between materials and air, and the working environment is clean. 3, technical parameters 4, the scope of application Pharmaceutical and Chemical: various tableting granules, boric acid, borax, hydroquinone, malic acid, maleic acid and the like. Food and building materials: wine trough, monosodium glutamate, sugar, salt, slag, watercress, seeds, etc. It can also be used for cooling, humidification, etc. of materials. XF series horizontal boiling dryer 1, working principle Boiling dry, also known as fluidized bed, is composed of air filter, heater, boiling bed host, cyclone separator, bag filter, high-pressure centrifugal fan, and operation console. Due to the different nature of dry materials, it is equipped with dust removal equipment . It can be considered as needed. At the same time, the cyclone separator and the bag filter can be selected at the same time. Generally, one of the larger proportions such as granules and granular materials can be dried by selecting a cyclone separator and a lighter weight small particle. The shape and powder materials need to be equipped with a bag filter, and a pneumatic feeding device and a belt conveyor are available for selection. The bulk solid material is added to the fluidized bed dryer by the feeder, and the filtered clean air is heated and sent by the blower to the bottom of the fluidized bed through the distribution plate to contact the solid material to form a fluidized gas-solid heat exchange. . After the material is dried, it is discharged from the discharge port, and the exhaust gas is discharged from the top of the bubbling bed through the cyclone dust collector group and the bag filter to recover the solid powder and then emptied. Steam, electricity, hot air stoves can be used (according to user requirements). 2, technical parameters 3. Scope of application XF series horizontal boiling dryer is suitable for the drying of granular materials, such as: raw materials in pharmaceuticals, tablet pellets, Chinese medicine granules, plastic resin in chemical raw materials, citric acid and other powdery or granular materials. Dry dehumidification, also used for drying food and beverage granules, grain processing, corn germ, feed, etc. The particle size of the material is generally up to 6 mm, preferably 0.5-3 mm. DWT series belt dryer 1, working principle The material in the hopper is evenly spread on the stainless steel wire mesh by the feeder, and the transmission motor drives the mesh belt to move at a constant speed in the drying box. The drying section consists of several units. Hot air circulates laterally within two (or several) units. Fresh air enters by the fan. Heated by a heat exchanger. Hot air exchanges heat with the material through the material layer. Enter the lower chamber. Then flow to the next unit. The cooled hot air is then reheated by a heat exchanger, and the hot air penetrates the mesh belt and exchanges heat with the material again. The hot and humid air is discharged by the exhaust fan. After drying, the number of units of each dryer can be selected according to the characteristics of the materials and the process requirements. 2, technical parameters 3. Scope of application The DWT series belt dryers are continuous drying equipment for batch production. It is used for the drying of flake, strip and granular materials with good gas permeability. It is especially suitable for materials such as dehydrated vegetables and traditional Chinese medicine decoction pieces, which have high water content and high temperature, and the drying machine has high drying speed and high evaporation intensity. The advantage of good product quality is that the paste of the dehydrated filter cake can be dried after being granulated into a rod shape. Bitumen Heating Storage Equipment Asphalt heating storage equipment is an important road construction equipment, mainly used to heat and store asphalt in order to carry out road construction and maintenance when needed. The equipment has the characteristics of high efficiency, safety and environmental protection, and can provide stable asphalt supply for road construction. Bitumen Heating Storage Equipment,Bitumen Tank Container,Gas Thermal Oil Heater,Asphalt Storage Tank Equipment BituRock Science & Technology (Jiangsu) CO., LTD , https://www.biturockplant.com
Asphalt heating storage equipment is mainly composed of heating device, storage tank and control system. The heating unit uses oil or gas burners to transfer heat to the asphalt to heat it to the proper temperature. Storage tanks are large containers used to store heated asphalt, generally made of high-temperature resistant materials. The control system is responsible for monitoring the operating status of the equipment and the temperature of the asphalt to ensure the safe and stable operation of the equipment.
The heating principle of asphalt heating storage equipment is to transfer heat to asphalt through thermal conduction, so that it is heated. Heating devices are generally divided into direct heating and indirect heating in two ways. Direct heating is the use of the burner directly into the storage tank, hot air through the contact of hot air with the asphalt to heat it. Indirect heating is the use of heat exchangers to heat the asphalt in the storage tank without direct contact with the air. The two heating methods have advantages and disadvantages, and need to be selected according to the actual situation.
Asphalt heating storage equipment heating speed, can quickly heat asphalt to the use of temperature, improve production efficiency. At the same time, the equipment also has environmental protection characteristics, reducing exhaust gas and smoke emissions, reducing the impact on the environment. In addition, the operation of asphalt heating storage equipment is simple and easy to maintain, which can meet the needs of various road construction and maintenance projects.
In short, asphalt heating storage equipment is an important road construction equipment, with high efficiency, safety, environmental protection and other characteristics. It can provide a stable supply of asphalt for road construction, improve construction efficiency, reduce the impact on the environment and waste of resources. The equipment has a wide application prospect in the field of road construction.