Boiling drying, also known as fluidized bed, has been used and improved for 30 years, and is increasingly reflected in its important role in medicine, chemical industry, food, grain, etc. However, the performance and application programs of different types of boiling dryers are also different. This article analyzes the differences between several types of boiling dryers and elaborates on the characteristics of boiling drying equipment, enabling people to better use these devices and making their manufacturing and application more complete, reliable, and safe
Principle of Boiling Drying Machine: It refers to the drying medium that dries solid particles in a fluidized state. Based on the powder material in the boiling drying process, at the same time, under the influence of exhaust, the fine powder container catcher filter returns to the outdoors. Dry gas-solid two-phase counter current contact, powerful wave. Solid particles suspended in a dry medium have a large contact surface area, which is excellent in terms of heat and mass transfer, quantity, drying intensity, and thermal efficiency. Due to its better adaptability, boiling drying has a smaller footprint, larger production capacity, higher thermal efficiency, easier control of operation, and reduced particle damage compared to other drying machines. It is currently more widely used, especially in the pharmaceutical industry.
Differences in boiling drying types and comparison with other equipment
With the continuous development of application technology, there are more and more types and applications of boiling dryers, and the classification methods of equipment are also different. According to the dried materials, they can be divided into three categories: granular materials; The second type is paste like materials; The third type is materials with fluidity such as suspensions and solutions. According to the operating conditions, it can be basically divided into two categories: continuous and intermittent. According to the structural state, there are generally fluidized type, stirred fluidized type, and vibration type. Now, let's briefly introduce the boiling drying equipment produced by the company from the above three aspects.
In terms of operating conditions, the GFG series boiling dryer and FG series boiling dryer are intermittent, and there are certain requirements for the particle size of the dried material. Generally, it is not less than 30 microns and not less than 4mm as appropriate. When several materials are mixed together for drying, the specific gravity of each material should be close. The XF series horizontal boiling dryer, GZQ series vibrating fluidized bed dryer, and NDF internal heating fluidized bed dryer belong to continuous type and can meet the requirements of continuous production. Compared with other devices, boiling drying has better adaptability to various materials. Compared with hot air circulation ovens, it has a smaller footprint, larger production capacity, higher thermal efficiency, and even humidity in the dried products. Compared to air drying, the expected moisture content of the product can be achieved by adjusting the length of time the material stays in the fluidized bed.
FG vertical boiling dryer is mainly used for drying powder or granular materials in industries such as medicine, food, and chemical. The characteristics of FG vertical boiling dryer are: ① fluidized drying, fast heat and mass transfer; ② Operate under closed negative pressure without dust flying; ③ Using anti-static filtering materials for safe operation; ④ Equipment *, cleaning *, no cross contamination; ⑤ Meet the requirements of GMP standards.
The XF series horizontal boiling dryer is composed of an air filter, a boiling bed main cyclone separator, a bag filter, a high-pressure centrifugal fan, and an operation console. Due to the different properties of dry materials, when matching dust removal equipment, it can be carried out as needed, and cyclone separators and dust collectors can be selected simultaneously. You can also choose one of them. Generally speaking, materials with a higher specific gravity only need to choose a cyclone separator. Materials with lighter specific gravity need to be equipped with a bag filter and a backup pneumatic feeding device should be selected. The XF series horizontal boiling dryer is mainly suitable for drying operations in pharmaceuticals, chemical raw materials, food, grain processing, and feed. For example, drying and dehumidification of raw materials, tablet granules, traditional Chinese medicine granules, health foods, beverage granules, corn germ, feed, plastic resins, citric acid, and other granular materials.
The characteristics of the XF series horizontal boiling dryer are that it can implement automated production and is a continuous drying equipment. Fast drying speed, low temperature, can ensure product quality, and meet the GMP requirements for pharmaceutical production Steam, electricity, and hot air stoves can all be used.
Boiling dryer improves flowability and reduces dust flying through powder granulation; Improve its solubility through powder granulation; Mixing, granulation, and drying in one machine to complete one-step granulation process; Equipment *, lightweight and fast loading and unloading, clean flushing, meets GMP standards.
Application scope of boiling dryer: Equipment classification is divided into two categories based on appearance: horizontal and vertical. Horizontal, also known as box type boiling dryer, and vertical, also known as boiling dryer. The working principle of horizontal and vertical is the same. Suitable for powdered and granular materials in industries such as pharmaceuticals, chemicals, and food.
Installation instructions for boiling dryer: During the installation of boiling dryer, all equipment should be placed flat; Secure with foot screws and ensure good sealing of spare parts. The fan can be placed indoors or in a self built soundproof room, and the layout can be adjusted according to specific circumstances.