CIRCULATION DRIER FOR STUDYING KINETICS OF DRYING Russian patent published in 1997 - IPC

FIELD: drying engineering. SUBSTANCE: circulation drier has a circulation loop that consist of air duct of variable cross-section provided with a fan the sucking portion of which is provided with sucking branch pipe having a gate between the fan and control gate and the heating portion of which is provided with an exhaust branch pipe with a gate, drying chamber, electric air heater, temperature gauges and psychrometers upstream and downstream of electric calorifer and drying chamber, flow meters inside the air duct, in sucking and exhaust branch pipes, contact temperature gauge downstream of the air heater and coupled to the switch of heating sections, suspended basket for material to be dried, and balance connected to the basket. The drying chamber is provided with two pressure-tight baffles having flow ports of rectangular cross-section at the inlet and outlet of the drying chamber on both sides of the suspended basket. EFFECT: enhanced efficiency. 4 dwg