Drying equipment is widely used in industry, and drying equipment is needed in many fields. Similarly, drying equipment also plays an important role in the pharmaceutical industry. Today, LABFREEZ will take everyone to take a look at the application of drying equipment in the chemical and pharmaceutical industry, and analyze the application of drying equipment in the chemical and pharmaceutical industry.
(1) Spray dryer
Spray drying is the most widely used process in the liquid process shaping and drying industry. It is most suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid materials. Therefore, when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet precise standards, spray drying is a very ideal process.
(2) Belt dryer
The belt dryer is composed of several independent unit sections. Each unit section includes a circulating fan, a heating device, a separate or public fresh air intake system and a tail gas exhaust system. The operating parameters of the quantity of drying medium, temperature, humidity and exhaust gas circulation can be independently controlled to ensure the reliability of the dryer and the optimization of operating conditions. The belt dryer is flexible in operation, wet material is fed, and the drying process is carried out in a completely sealed box. The working conditions are good and the leakage of dust is avoided. It is used for drying flakes, strips and granular materials with good air permeability. It is especially suitable for materials with high water content and high temperature of materials such as dehydrated vegetables and Chinese herbal medicine pieces.
(3) Roller scraper dryer
The roller scraper dryer is a continuous operation device that uses a rotating cylinder to dry the liquid phase material or ribbon material attached to the outer wall of the cylinder by means of heat conduction. The material liquid to be dried flows from the high tank into the material receiving tank of the drum dryer. The drying drum is driven by the transmission device and rotates at the specified speed. This machine is mainly used to process liquid materials. It can be heated and dried by steam, hot water or hot oil, and cold water can be used for cooling and flake formation. According to different material properties and process requirements, immersion, spray, and mill auxiliary feeding methods can be used.
(4) Single cone low temperature vacuum dryer machine
The single-cone low-temperature vacuum drying body is slightly olive-shaped, with covers at both ends, and two shafts in the middle to support the body. The body has a jacket for heating, and the body can be rotated during drying, so that the material and the wall are frequently replaced and contacted, which overcomes the shortcomings of low thermal efficiency due to the material in the vacuum oven that the material in the vacuum oven is mainly conducted by the heating cylinder. Rotary vacuum dryers have been widely used in fine chemicals, medicine, etc., and are not suitable for materials with high viscosity or strong adhesion during the rotation process. This equipment is mainly used for the concentration, mixing and drying of powder, granular and fibrous materials in the pharmaceutical, chemical, food and other industries, and materials that require low temperature drying (such as biochemical products, etc.). It is more suitable for easy oxidation, volatile, and heat sensitivity. Drying of strongly irritating, toxic materials and materials that are not allowed to destroy crystals.
(5) Spin flash dryer
The material to be dried enters the drying chamber through the screw feeder, and is crushed by the stirring blade at the lower part of the dryer. The crushed material is fully in contact with the hot air, and flows upward and dried under the dual action of the stirring blade and the air distributor, and passes through the classifier. The materials with qualified particle size and humidity are screened and turned down and dried until they are qualified.
