Difference between boiling dryer and common dryer

Boiling drying, also known as fluidized bed, after 30 years of use and improvement, now in medicine, chemical industry, food, grain, etc., more and more reflects its important role However, different types of boiling dryers have different performance and application programs This paper analyzes the differences of several types of fluidized bed dryers, and expounds the characteristics of the fluidized bed dryers, so that people can better use these equipment, and make the manufacture and application of this equipment more complete, more reliable and more secure The principle of the fluidized bed dryers: it refers to the powder materials in the fluidized state and the fluidized drying process of the dry medium solid particles, At the same time, under the influence of exhaust, the fine powder container catcher filter returns to the outdoors Dry gas-solid two-phase countercurrent contact, strong wind tide Solid particles suspended in the drying medium have a large contact surface area, which is good in heat transfer, mass transfer, quantity, drying strength and thermal efficiency Because of the better adaptability of boiling drying, compared with other dryers, various materials cover a small area, have a large production capacity, high thermal efficiency, easy to control operation, and reduce particle damage At present, they are widely used, especially in the pharmaceutical industry The type difference of boiling drying and the comparison with other equipment With the continuous development of application technology, the type and application of boiling dryer are more and more, and the classification methods of equipment are also different According to the dried materials, it can be divided into three categories: granular materials; paste materials; and liquid materials such as suspension and solution According to the operation conditions, it can be basically divided into two types: continuous type and intermittent type According to the structure state, it can be divided into fluidization type, agitation fluidization type and vibration type This paper briefly introduces the boiling drying equipment produced by Yibu company from the above three aspects From the operating conditions: GFG series of boiling dryer and FG series of boiling dryer are intermittent type There are certain requirements for the particle size of dried materials Generally, it is appropriate that the particle size is not less than 30 microns and not less than 4mm When several materials are mixed to dry, the proportion of various materials should be close XF series horizontal boiling dryer, GZQ series vibrating fluidized bed dryer and NDF internal heating fluidized bed dryer are continuous type, which can meet the requirements of continuous production Compared with other equipment, due to the good adaptability of boiling drying to various materials, compared with the hot air circulation oven, it has small floor area, large production capacity, high thermal efficiency, and even humidity of dried products Compared with air drying, the expected moisture content of the product can be achieved by adjusting the residence time of the material in the fluidized bed FG vertical boiling dryer is mainly used for drying powder or particle materials in medicine, food, chemical industry and other industries Features of FG vertical boiling dryer: ① fluidization drying, fast heat and mass transfer; ② operation under closed negative pressure, no dust flying; ③ anti-static filter material, safe operation; ④ equipment without dead angle, thorough cleaning, no cross pollution; ⑤ GMP specification requirements XF series horizontal boiling dryer is composed of air filter, main machine cyclone separator of boiling bed, bag filter, high-pressure centrifugal fan and operation platform Due to the different nature of dry materials, when supporting dust removal equipment, it can be carried out according to the needs, and the cyclone separator can be selected at the same time to distribute the dust remover You can also choose one of them Generally speaking, only cyclone separator is needed for materials with large proportion The materials with light specific gravity shall be equipped with bag type dust remover and standby pneumatic feeding device XF series horizontal boiling dryer is mainly used for drying medicine, chemical raw materials, food, grain processing and feed For example: drying and dehumidification of APIs, tablet pressing granules, traditional Chinese medicine granules, health food, beverage granules, corn germ, feed, plastic resin, citric acid and other powder and granular materials Features of XF series horizontal boiling dryer: it can implement automatic production and is a continuous drying equipment Fast drying speed, low temperature, can ensure the quality of products, meet the GMP requirements of pharmaceutical production Steam, electricity, hot air stove can be used The fluidized bed dryer improves fluidity and reduces dust flying through powder granulation; improves its solubility through powder granulation; completes one-step granulation in one machine by mixing, granulating and drying; the equipment has no dead angle, the loading and unloading materials are light and fast, and the washing is clean, meeting GMP specifications Application scope of boiling dryer: the equipment is divided into horizontal type and vertical type according to the appearance, horizontal type is also called box type boiling dryer, vertical type is also called boiling dryer The working principle of horizontal and vertical is the same Suitable for pharmaceutical, chemical, food and other industries powder, granular materials Instructions for installation of boiling dryer: during installation of boiling dryer, all equipment shall be placed flatly; it shall be fixed with foot screws, and the spare parts shall be well sealed The fan can be placed indoors or in the self built anechoic room, and the plane layout can be adjusted according to the specific situation.