公开(公告)号：AU2003298927A1

公开(公告)日：2004-08-10

申请号：AU2003298927

申请日：2003-12-05

Applicant: THE STANDARD OIL COMPANY

Inventor： GODBOLE SANJAY P ,  CESA MARK C

IPC: C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and using solvent water introduced at the top of said column, removing a first overhead vapor stream of acrylonitrile or methacrylonitrile with some water from the top of the column, and a first liquid stream containing water and impurities from the bottom of the column, the contents of said column maintained at a substantially neutral pH by adding a sufficient amount of at least one alkaline compound selected from ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and alkylene diamines to the overhead decanter and/or to the solvent water.