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  • FBW Series Fluid-bed Multi-processor
FBW Series Fluid-bed Multi-processor

FBW Series Fluid-bed Multi-processor


    Fluidized bed dryer

    Fluidized bed dryer is mutl-functional FBG which has functions of top spray, bottom spray and side spray.

    Fluidized bed dryer is widely used in pharmaceutical, chemical and foodstuff industries for mixing, drying, granulating, coating and pelletizing.

    Fluidized bed dryer introduction

    Fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. The Fluidized bed drying equipment works on a principle of fluidization of the feed materials. In fluidization process, hot air is introduced at high pressure through a perforated bed of moist solid particulate. The wet solids are lifted from the bottom and suspended in a stream of air (fluidized state). Heat transfer is accomplished by direct contact between the wet solid and hot gases. The vaporised liquid is carried away by the drying gasses. Sometimes to save energy, the exit gas is partially recycled.

    Principle and Working of Fluidized Bed Dryer (FBD)

    Fluidized bed dryer (FBD) is well known and widely used equipment in granulation area of

    pharmaceutical manufacturing. It is used in the granulation process for drying the material to get desired moisture content in the tablet formulation granules required for perfect compression of tablets.pharmaceutical manufacturing. It is used in the granulation process for drying the material to get desired moisture content in the tablet formulation granules required for perfect compression of tablets.


    How does a fluidized bed dryer work?

    In a fluid bed dryer used for powder drying, initially the air is sucked inside from the surroundings with a fan run with electric motor inside the dryer. The air then passes through heating system within the dryer and gets heated up. This hot drying air is then made to flow through bed of the moist materials that are laid on shaking perforated steel bed. This air is introduced with required velocity and temperature that the bed gets fluidized allowing intimate contact of each particle with the air. As the bed vibrates or shakes, the particles in the bed are carried forward slowly along the length of the dryer. All the moisture present in particles get sucked by the hot air which then escapes into the dust recovery system and is recycled for the further use in process. The velocity and temperature of air can be controlled as the particles pass on the bed and hence very wet to sticky materials can also be dried with a fluid bed dryer effectively. The dried material is then fed into the cooling zone where cool air reduces the temperature of the material to the required state.

    Applications of Fluidized-Bed Dryers

    Fluidized bed dryers are used in drying of various materials such as powders, tablets, granules, coals, fertilizers, plastic materials. This process is being used in granulation of pharmaceutical powders.

    Fluidized bed dryer Feature 

    1. Follow the regulations of c GMP, PIC/S GMP

    2. FDA Movable design

    3. Filter cartridge

    4. PID precision control

    5. High processing efficiency

    Fluidized bed dryer Advantange

    1. Small footprint

    2. R&D and scale up

    3. Process can be time, volume and power controlled.

    4. Multipurpose-drying, granulating, coating and pelletizing.

    History of Fluidized Dryer

    In 1922, Fritz Winkler made the first industrial application of fluidisation in a reactor for a coal gasification process. In 1942, the first circulating fluid bed was built for catalytic cracking of mineral oils, with fluidisation technology applied to metallurgical processing (roasting arsenopyrite) in the late 1940s. During this time theoretical and experimental research improved the design of the fluidised bed. In the 1960s VAW-Lippewerk in Lünen, Germany implemented the first industrial bed for the combustion of coal and later for the calcination of aluminium hydroxide.

    about cannan 

    Established in 2000, Zhejiang Canaan Technology Co., Ltd (hereafter referred to as "Canaan Technology" or "Canaan") is a professional manufacture that is concerned with the development, production and marketing of pharmaceutical equipment. After more than a decade's operation, Canaan has evolved into a leading pharmaceutical equipment manufacture in China. It successfully got listed on A stock market (code: 300412) in 2014 and then became the domestic industry of solid preparation equipment. Based in Wenzhou, China, Canaan Technology owns several wholly-owned and holding subsidiaries such as Nanjing Canaan Pharmaceutical Equipment Co. Ltd, ocated in Gaochun district with an area of 200 mu (1 mu equals to 0.0667 hectares), and Beijing Canaan Lemet Technology Co., Ltd, located in Changping district. It has initially formed such a industrial layout that takes Wenzhou, Nanjing and Beijing as the center to radiate over the country.

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