The centrifugal spray dryer uses a centrifugal atomizer to dry certain liquid materials, and is currently one of the most widely used dryers in industrial production. It is especially suitable for generating powdery and granular products from solutions, emulsions, suspensions and pumpable lake-like liquid raw materials, and is widely used in the pharmaceutical, food, and chemical industries.
The centrifugal spray dryer is mainly controlled by air filter, air supply and heating system, material dehumidification and cooling conveying system, atomization system, main tower, exhaust system, jacket cooling system, air sweeping device, pneumatic rapping system, PLC control System and other components. Its work efficiency is affected by the quality of each part of the equipment and the operation method.
At the same time, regular maintenance, maintenance and cleaning of equipment are also very important. After using the centrifugal spray dryer equipment, in order to ensure normal use next time, the user needs to clean and maintain the centrifugal nozzle.
At present, there are three cleaning methods for the centrifugal nozzle of a centrifugal spray dryer, namely dry cleaning, wet cleaning and chemical cleaning. Among them, dry cleaning mainly refers to cleaning with brushes, brooms, vacuum cleaners, etc.; chemical washing methods can be divided into cleaning with lye, acid and various detergents. So, what is wet washing?
"The so-called wet washing is not literally simply washing with water or disinfectant." According to reports, wet washing refers to the use of hot water with a temperature in the range of 60 to 80 degrees Celsius to clean the centrifugal nozzle of the centrifugal spray dryer. , The hot water in this range can ensure that the nozzle is cleaned and disinfected more thoroughly.
In addition to wet cleaning methods, there are also chemical cleaning methods such as alkaline cleaning and acid cleaning. Among them, alkaline washing refers to mixing sodium hydroxide (NaOH) into a solution with a concentration of 0.5-1%, then heating it to 60 to 80 degrees Celsius, washing it, and then rinsing it with clean water after the washing is completed. And pickling refers to (HNO3) is prepared into a solution at a concentration of 1-2% and then heated.
Insiders are kindly reminded that when cleaning the centrifugal nozzle, the staff should pay special attention to the protective measures for the centrifugal nozzle of the centrifugal spray dryer, and do not use chlorine and its compounds for washing to avoid oxidation.
In general, the centrifugal spray dryer has the advantages of fast speed, high efficiency, and few procedures, so it can maintain the color, taste and fragrance of heat-sensitive materials. Moreover, the powder has good solubility and high purity. This series of spray dryers are widely used in food, medicine, chemical and other fields, and the scope of application will be expanded in the future. When using equipment, pharmaceutical companies should pay attention to standard operation, use equipment correctly, and carry out regular maintenance and cleaning of equipment in order to extend the life of equipment.
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