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dryer

  • air current drying machine
air current drying machine

air current drying machine

Pneumatic dryer is the use of high-speed flow of hot gas flow makes being dry solid particles suspended in it, and two large contact area, to strengthen the heat and mass transfer process, is widely used for material drying unit operation. Also known as "instant drying", it is an application of solid fluidization in drying and is also an important equipment in the charcoal machine.
Working principle of air flow dryer:

The wet material enters the dryer at the same time with the natural air after the heating, and the two are fully mixed. Because the heat exchange area is large, the purpose of evaporation drying is achieved in a very short period of time. After drying, the finished product is discharged from the cyclone separator, and a small portion of the flying powder is recycled by the cyclone dust collector or cloth bag filter. The drying time of the air dryer is short, generally 1-4 seconds. The product has left the dryer before the temperature has been increased, so it is suitable for the drying of heat-sensitive materials.

Advantages of pneumatic dryer:

1. With unique processing technology, the materials such as the inner wall of the drying pipe and the flange joint are completely smooth to ensure that the material is not stuck in the device.
2. Strong drying intensity and investment in equipment. The capacity of air flow drying equipment is relatively large, and the evaporation water capacity is from 50kg/h-1500kg/h, while the equipment volume is small and the investment province is not comparable with other drying equipment.
3. High degree of automation and good product quality. Air drying materials are all carried out in the pipeline, and the drying time is very short (only o.5-2 seconds). Therefore, it can be automated. The products are not exposed to the outside world, and the pollution is small and the quality is good.
4. The drying intensity of air drying machine is large. Because of the high airflow velocity, the particles are dispersed in the gas phase, and the total surface area of the particles can be used as the effective area of drying. Therefore, the effective area of drying is greatly increased. At the same time, due to the dispersion and agitation of drying, the surface of gasification is constantly updated, so the heat transfer and mass transfer process of drying is very strong.

5. Short drying time. The contact time of the gas-solid two-phase is very short, and the drying time is generally 0.5 to 2 seconds, and the length is not longer than 5 seconds. The thermal denaturation of materials is generally a function of temperature and time. Therefore, the material of thermal sensitivity or low melting point will not cause overheating or decomposition and affect its quality.

6. High thermal efficiency. Pneumatic dryer USES the gas-solid phase flow and operation, and, on the surface of gasification stage, the material is always in a joint solution with the wet bulb temperature of the gas, generally not more than 60 ~ 65 ℃, at the end of the drying temperature rising stage, the gas temperature is lower, the product temperature is not more than 70 ~ 90 ℃. Therefore, high temperature gas can be used.
7. The air flow type dryer is simple, small and investment province. Compared with the rotary drier, the land area is reduced by 60% and the investment is about 80%. At the same time, it can combine the process of drying, crushing, screening, conveying and other unit processes, not only the process is simplified, but also the operation is easy to control automatically.
8. Wide application. Airflow drying can be used in various powdery materials.

Application range of air flow drier:

Pneumatic dryer equipment is especially suitable for moisture content is larger, the paste of wet material, as well as with other air drying method to dry materials, such as: acetate flocculant, catalyst, C, M, C, CT - 1 resin and calcined gypsum, electrolytic manganese dioxide, anthraquinone sulfonic acid ammonium salt, fluorspar, diatomite and silica gel catalyst, bone meal, synthetic resin, and active gluten, activated clay, chemical filter cake, rutile type titanium pigment, sebacic acid, copper sulfate, aluminum sulfate, sodium sulfate, calcium phosphate, calcium phosphate esterification of starch, dye, citric acid, coal, clay, clay, cement, aluminium hydroxide and barium hydroxide, calcium lactate, food, gypsum slurry, lime, biological products, carbon black, calcium carbonate slurry, sludge residue, organic chemicals, aluminum stearate, ferric oxide, organic fuel, corn protein feed, damp mud, mica powder, pharmaceutical, pigment, lees slag etc.


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Phone: 13203711666

Tel: 0371-69595878

fax: 0371-64311999

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Add: Gongyi city, henan province,waigou industrial zone

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