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Nanjing Tengbo drying equipment Co., Ltd. is a key manufacturer of dry equipment and pharmaceutical machinery industry in China. It is located in the east suburb economic and Technological Development Zone of Nanjing City, which is beautiful in the Six Dynasties of Six Dynasties. It faces Beijing Shanghai railway and Shanghai Nanjing high speed, backed by the Yellow River.
Enterprise introduction
Nanjing Tengbo drying equipment Co., Ltd. is a key manufacturer of dry equipment and pharmaceutical machinery industry in China. It is located in the east suburb economic and Technological Development Zone of Nanjing City, which is beautiful in the Six Dynasties of Six Dynasties. It faces Beijing Shanghai railway and Shanghai Nanjing high speed, backed by the Yellow River.
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At present, the company has formed a good development trend with dry equipment and pharmaceutical machinery as parallel lines. Relying on the domestic colleges and universities and scientific research institutes, we have successfully developed a new type of hot air circulation oven (energy saving, high efficiency), the cleanliness and precision of the 100 grade sterilizing oven, the low temperature vacuum drying box and the high efficiency film coating machine. The high speed centrifugal spray dryer, mixer, shredder, etc. have provided a complete set of equipment for many well-known domestic enterprises such as China Institute of Atomic Energy, Chery automobile group, Beijing Tongren hall, Nanjing San Le group, Fu Yao group, Hayao Group, Zhengda sunny, Fujian Yakin and so on. A good drive.
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  • Ozone series
  • Comminuted series
  • Auxiliary series
  • Drying series
  • Mixed series
  • Liquid distribution tank series
  • Feeding series
  • Granulation series
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Application of eight different drying equipments in chemical and pharmaceutical industry
Drying equipment is very widely used in industry, and the use of drying equipment is needed in many fields. Also, drying equipment also plays an important role in the pharmaceutical industry. Today, the author will bring eight kinds of drying equipment in the chemical and pharmaceutical industry. The application of eight drying equipments in chemical and pharmaceutical industry is analyzed.

(1) belt drier

The belt dryer consists of several independent units. Each unit segment includes a circulating fan, heating device, fresh air intake system and exhaust gas system separately or publicly. The operation parameters of the drying medium quantity, temperature, humidity and tail gas circulation can be controlled independently, so as to ensure the reliability and operation conditions of the dry machine. The dryer is flexible in operation, wet in feed, and dry in the completely sealed box. The working conditions are good and the dust leakage is avoided. The drying of flaky, striped and granular materials with good air permeability is especially suitable for dehydrated vegetables, Chinese herbal medicine and other materials with high water content and material temperature which is not allowed to be high.

(2) roller scraper dryer

A roller scraper dryer is a continuous operating equipment for drying the liquid material or strip material attached to the outer wall of the cylinder by rotating the cylinder in a heat conduction way. The drying material is poured into the receiving tank of the drum dryer by the upper trough. The drying cylinder rotates at the prescribed speed under the drive of the transmission device. The material is formed by a membrane device and a material film is formed on the wall surface of the roller. The tube is continuously fed into the heating medium, and the body is heated by the tube wall to vaporize the wet partition of the film, and then the material will be scraped through the scraper, and the material is spirally transported to the tank to carry on the packing. The wet fraction removed by evaporation can be introduced into the corresponding treatment device by the closed cover, which is generally water vapor, and can be directly put into the atmosphere by the exhaust pipe at the top of the cover. The machine is mainly used for treating liquid materials, which can be heated and dried through steam, hot water or hot oil, and can also be cooled by cooling water. According to different material properties and process requirements, immersion, sprinkling, grinding and auxiliary feeding methods are adopted.

(3) hollow blade dryer (blade dryer)

The hollow blade dryer is also called the leaf dryer, which is mainly composed of a W shell with a jacket and two hollow propeller blades and transmission devices. The shaft is lined with hollow blades, and the shaft ends are provided with rotary joints imported by thermal medium. The heat required for drying moisture is transported to the material by the inner wall and the hollow blade wall of the W groove with a jacket. During the drying process, the hollow shaft with hollow blades is used to heat the material while stirring the material, so that the heating surface can be renewed. It is a continuous conduction heating dryer. The heating medium is steam, hot water or heat conduction oil. The heating medium is inserted into the shell and two hollow blade shaft, and the material is heated and dried in the way of conduction heating. The structure of different material hollow paddles is different. The machine is suitable for handling all kinds of paste, granular and powdery materials with good thermal stability. Under special conditions, it can also dry heat sensitive materials and recover solvents in the drying process. The drying or cooling of materials such as carbon black, light calcium carbonate, titanium dioxide, barium carbonate, nitrile uric acid, gypsum, clay, manganese dioxide, nylon and polyester chips, polyethylene and polypropylene (recovery solvent) are used.

(4) a vacuum rake dryer

The dry material is added in the middle of the shell of the vacuum rake dryer. When the material is in contact with the shell wall, the surface is constantly updated. The dry material is heated indirectly by the steam (or hot water and heat conduction oil), but the moisture of the material is vaporized, and the vaporized moisture is pumped away from the vacuum pump in time. The drying material is heated indirectly by the heat carrier, so that the moisture in the material is vaporized, and the vaporized water is discharged in time by the vacuum pump.

In the range of 400 ~ 700mmHg, the pressure of water vapor on the surface of the dried material is much greater than that of the evaporation space in the dryer shell. Thus, it is beneficial to the discharge of moisture and surface moisture in the dried material, which is conducive to the movement of the water molecules of the dried material and the purpose of drying. The vacuum rake dryer is suitable for heat sensitive materials, materials easily oxidized at high temperature or easy to be made in drying, as well as materials recovered from steam in drying. Typical dry materials include sodium acrylonsulfonate, CMC, phthalocyanine blue, dye intermediate, carboxymethyl starch, maltodextrin, anthraquinone sulfonic acid, etc.

(5) double conical rotary vacuum dryer

The double cone rotary vacuum dryer is slightly olive like, covered with two ends, and has two axes in the middle to support the body. The body has a jacket to heat, and the body can be rotated when drying, so that the material and the wall of the device are constantly changed and contact, so that the material in the vacuum oven mainly depends on the heating tube and the heat efficiency is low. Rotary vacuum dryer has been widely applied in fine chemical industry and medicine. It is not suitable for materials with high viscosity or strong adhesion during rotary process. The equipment is mainly used for the concentration, mixing, drying of powdery, granular and fibrous materials in the pharmaceutical, chemical and food industries, as well as dry materials (such as biochemical products). It is more suitable for the drying of oxidizable, volatile, thermosensitive and toxic materials and materials that are not allowed to destroy the crystal.

(6) spray dryer

Spray drying is the most widely used technology in liquid forming and drying industry. It is most suitable for producing powdery and granular solid products from solution, emulsion, suspension and paste liquid raw materials. Therefore,
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Introduction to technology developme…
The belt drying equipment is a continuous drying equipment. The belt dryer is a continuous drying equipment used in large quantities of produ… [ View the details ]
Five ways to prevent the spray dryin…
First, choose the drying tower with clip wall and use air to cool it, so that the wall temperature will remain below fifty degrees Celsius.Tw… [ View the details ]
Choosing the right spray drying equi…
Using this kind of drying equipment to some extent effectively prevent dust, but also improve the production environment, but due to the invo… [ View the details ]
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