Patent ID: 7550116
Filing Date: 2009-06-23
Classification: B01F,B01J,B29B,C08G

Abstract:
1. A disk-ring reactor for producing polycondensates from liquefied precondensates, the reactor comprising a heatable cylindrical and horizontal vessel centered on a housing axis and having a melt inlet, a melt outlet spaced downstream therefrom, and a vapor outlet above the melt outlet, and adapted to hold a body of the liquefied precondensate; a plurality of partitions subdividing the vessel into a plurality of compartments spaced between the melt inlet and melt outlet and including an outlet compartment at the outlets, each partition being formed with a lower opening below a level of the precondensate body, whereby the liquefied precondensate can flow downstream from the melt inlet to the melt outlet through the compartments and between the compartments through the lower openings, the furthest downstream partition defining the outlet compartment being formed above the respective lower opening with an upper throughgoing backflow opening, whereby the liquid can pass upstream when above a level of the throughgoing upper opening from the outlet compartment into the adjacent compartment; a horizontal rotatable drive shaft in the vessel and defining an agitator axis; and a plurality of agitators each in a respective one of the compartments but not in the outlet compartment and each including a ring generally centered on the shaft and a plurality of spokes extending between the shaft and the respective ring, whereby the liquid in the outlet compartment is not agitated.