公开(公告)号：US3636067A

公开(公告)日：1972-01-18

申请号：US3636067D

申请日：1969-10-10

Applicant: MONSANTO CO

Inventor： LOVETT GORDON H ,  RAMBIN RONALD E

IPC: B01D3/40 ,  C07C121/32

CPC classification number: C07C253/34 ,  Y10S203/03 ,  C07C255/08

Abstract: D R A W I N G
A PROCESS FOR THE REDUCTION OF METHACRYLONITRILE CONTENT OF PRODUCT ACRYLONITRILE WHICH COMPRISES INTRODUCING AT LEAST A PORTION OF A BOTTOM FRACTION FROM ANY ACRYLONITRILE HEAVY ENDS SPLITTER COLUMN INTO AN ABSORBING COLUMN, TAKING OVERHEAD FROM SAID ABOSRBING COLUMN A FRACTION CONTAINING AT LEAST PART OF THE METHACRYLONITRILE, TAKING A BOTTOM, FRACTION FROM THE ABSORBING COLUMN, REMOVING THE ABSORBING SOLVENT FROM THE BOTTOM FRACTION AND RETURNING THE ACRYLONTRILE IN THE BOTTOM FRACTION TO THE ACRYLONTRILE HEAVY ENDS SPLITTER COLUMN.

公开(公告)号：US3636068A

公开(公告)日：1972-01-18

申请号：US3636068D

申请日：1969-10-10

Applicant: MONSANTO CO

Inventor： LOVETT GORDON H ,  RAMBIN RONALD E

IPC: B01D3/40 ,  C07C121/32

CPC classification number: C07C253/26 ,  C07C253/34 ,  Y10S203/03 ,  C07C255/08

Abstract: A PROCESS FOR THE REDUCTION OF THE METHACRYLONITRILE CONTENT OF PRODUCT ACRYLONITRILE WHICH COMPRISES INTRODUCING AT LEAST A PORTION OF A METHACRYLONITRILE RICH BOTTOM FRACTION FROM AN ACRYLONITRILE-HEAVY ENDS SPLITTER COLUMN INTO A DISTILLATION ZONE USED TO SEPARATE LOW-BOILING ORGANIC MATERIAL FROM WATER, TAKING AT LEAST A PORTION OF THE OVERHEAD FROM SAID DISTALLATION ZONE AND INTRODUCING SAID FRACTION INTO AN ACRYLONITRILE ABSORBING COLUMN, TAKING OVERHEAD FROM SAID ABSORBING COLUMN A FRACTION CONTAINING AT LEAST A PART OF THE METHACRYLONITRILE, TAKING A BOTTOM FRACTION FROM THE ABSORBING COLUMN, REMOVING THE ABSORBING SOLVENT FROM THE BOTTOM FRACTION AND RETURNING THE ACRYLONITRILE IN THE BOTTOM FRACTION TO THE ACRYLONITRILE-HEAVY ENDS SPLITTER COLUMN.