Modified process for resin manufacturing using a continuous sepa

Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound

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203 74, 203 87, 203 91, 203DIG6, 203DIG22, 422187, 202161, 560 79, 560191, 528272, B01D 314, C08G 6302

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active

043903983

ABSTRACT:
Volatile reactants are heated under reflux in a reactor and form volatile reaction by-products which are continuously removed in a vapor effluent from a reflux column and partial condenser. The effluent, which entrains some of the reactants, is condensed in a first total condenser and is fed to a distillation apparatus for separation of the volatile reactants and by-products and return of the separated reactants to the reactor. Before the condensate reaches the distillation apparatus, it is temporarily stored in a receiver from which it is controllably fed to a pre-heater where it is evaporated and then fed as a vapor to the distillation column of the distillation apparatus for separation. The distillation column includes at one end a reboiler which retains the reactants. The other end of the distillation column is coupled to a second total condenser in which the volatile by-products are condensed and withdrawn through a cooler for disposal. The reactants are controllably fed from the reboiler back to the reactor, thereby providing control of the system, which has improved efficiency since the distillation apparatus operates independently of the temperature and pressure conditions in the reactor and of the rate and composition of effluent from the reflux column.

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"Report on the Preparation of Isophthalic-Glycol Esters", (pub. Oronite Chem. Co.).

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