Centrifugal spray dryers use centrifugal atomizers to dry certain liquid materials and are one of the most widely used dryers in industrial production. It is especially suitable for the production of powdery and granular products in solutions, emulsions, suspensions and pumpable lake-like liquid materials. It is widely used in pharmaceutical, food, chemical industry and other industries.
Spray dryer
Centrifugal spray dryer is mainly composed of air filter, air supply and heating system, material dehumidification cooling delivery system, atomization system, main tower, exhaust system, jacket cooling system, air sweeping device, pneumatic rapping system, PLC control. System and other components. Its working efficiency is affected by the quality of the various components of the equipment and the method of operation.
At the same time, regular maintenance, maintenance and cleaning of the equipment is also very important. After using the centrifugal spray dryer equipment, in order to ensure the normal use of the next time, the user needs to clean and maintain the centrifugal nozzle.
At present, there are three cleaning methods for centrifugal spray dryer centrifugal nozzles, namely dry cleaning, wet washing and chemical washing. Among them, dry cleaning mainly refers to cleaning with a brush, a broom, a vacuum cleaner, etc.; the chemical washing method can be divided into lye, acid, and various detergents. So what is wet washing?
Baokang Drying Machine shares the technique of wet washing of centrifugal spray dryer centrifugal nozzle. The author has sorted this out.
“The so-called wet wash is not a simple water or disinfectant rinse.†According to the introduction, wet washing refers to the use of hot water in the range of 60 to 80 degrees Celsius to clean the centrifugal spray dryer centrifugal nozzle. The hot water in this range can ensure that the nozzle is cleaned and disinfected more thoroughly.
In addition to the wet washing method, there are also methods of washing with a chemical agent such as alkali washing and pickling. Among them, alkali washing means that sodium hydroxide (NaOH) is formulated into a solution of 0.5-1% concentration, and then heated to 60 to 80 degrees Celsius, and then washed, and then rinsed with water after washing. In the case of pickling, it is meant that (HNO3) is formulated into a solution at a concentration of 1-2% and heated.
The industry warmly reminds that when the staff is cleaning the centrifugal nozzle, special attention should be paid to the protection measures for the centrifugal spray nozzle centrifugal nozzle, and chlorine and its compounds should not be used for washing to avoid oxidation.
In general, the centrifugal spray dryer has the advantages of high speed, high efficiency, and low number of processes, so that the heat sensitive material can maintain its color and fragrance. 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 future application range will be broadened. While using equipment, pharmaceutical companies should pay attention to standard operation, proper use of equipment, and regular maintenance and cleaning of equipment to extend the life of equipment.
Many domestic drying equipment manufacturers have also upgraded their equipment. For example, the LPG high-speed centrifugal spray dryer launched by Jiangyin Xiangda Machinery has a fast drying speed, generally only 5-15 seconds, and has the characteristics of instantaneous drying. The material completes the drying process in a short time, the production process is simplified, the operation control is convenient, and it is suitable for continuous control of production.
In recent years, with the continuous development of China's social economy and the introduction of policies related to energy conservation and environmental protection, the demand for drying equipment in the market is obvious, and the types of products are becoming more diverse. Drying equipment such as microwave dryers and heat pump dryers also occupy a considerable share in the market. It is foreseeable that competition among drying equipment manufacturers will become more intense in the future.
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