Patent ID: 8722952
Filing Date: 2014-05-13
Classification: C10G,Y02P

Abstract:
1. A process for production of gasoline having a benzene content of less than about 0.4 weight % comprising: a) combining in an extractive distillation (ED) column equipped with a re-boiler b) maintaining the ED re-boiler temperature in the range of about 140° C. to about 185° C.; c) recovering a raffinate phase containing gasoline having a benzene content of less than 0.4 weight % from the top of the ED column and an extract phase containing benzene and solvent mixture from the bottom of the ED column; and d) separating the solvent mixture from the extract phase in a Solvent Recovery Column (SRC) to obtain benzene free solvent from the bottom and benzene having a purity of greater than 97 weight % from the SRC top.