B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
202/115
B01D 3/14 (2006.01) B01J 14/00 (2006.01)
Patent
CA 1088021
ABSTRACT OF THE DISCLOSURE Volatile reactants are heated under reflux in a reactor and form volatile reaction by-products which are continuously removed in a vapour 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 controll- ably fed to a pre-heater where it is evaporated and then fed as a vapour 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of the distillation column is coupled to a second total consenser in which the volatile by-products are condensed and withdrawn through a cooler for disposal.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. The apparatus and method disclosed are particularly useful for the production of unsaturated thermoset polyesters, simple ester plasticizers and alkyd resins.
269956
Bate Gary W.
Coker Robert J.
Deuzeman Henk J.
Fiberglas Canada Limited
G. Ronald Bell & Associates
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