Principle of operation
The drying process of closed cycle spray drying system is similar to that of open spray drying system. Because the materials to be treated contain organic solvents such as methanol, ethanol, toluene, DMF, etc., the system adopts the process of drying tail gas to bring out moisture, then condensing, emptying a small part, and recycling most of it to the air inlet for heating, and then drying. Spraying can be divided into centrifugal, pressure and airflow, and the working principle of closed cycle process is the same except for different atomization methods.
Performance characteristics
Compared with the open spray drying system, the closed cycle spray drying system has the following remarkable characteristics:
◎ High thermal efficiency.
◎ Dry liquid materials to powder materials efficiently and quickly.
◎ The solvent can be recovered, which has good economic benefits and conforms to the green circular economy.
◎ The tail gas is condensed and then discharged, so the environmental protection pressure of tail gas treatment is low.
◎ The whole system needs to be explosion-proof.
Applied range
Widely used in the drying of easily oxidizable materials, and the rapid drying of materials such as solutions, emulsions and liquid suspensions containing organic solvents.
