公开(公告)号：JP2007297399A

公开(公告)日：2007-11-15

申请号：JP2007169571

申请日：2007-06-27

Applicant: Standard Oil Co:The ,  ザ スタンダード オイル カンパニーThe Standard Oil Company

Inventor： GIBSON JAMES S ,  RINKER JEFFREY EARLE ,  WACHTENDORF PAUL T ,  GODBOLE SANJAY P

IPC: C07B63/00 ,  C07C253/32 ,  C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/03 ,  C07C255/08

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

Abstract: PROBLEM TO BE SOLVED: To provide a production process of acrylonitrile or methacrylonitrile, which offers an excellent production rate and an excellent quality of the obtained product without increasing the size of a column used in recovery and purification sections.
SOLUTION: The process is for the recovery of acrylonitrile or methacrylonitrile obtained from a reactor effluent of an ammoxidation reaction of propylene or isobutylene. The process comprises a step of passing the reactor effluent through an absorber column, a first decanter, a recovery column, a second decanter and a stripper column. The process is improved by maintaining the inside temperature of the first and second decanters at between about 32 to about 75°F.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 待解决的问题：为了提供丙烯腈或甲基丙烯腈的生产方法，其在不增加回收和纯化部分中使用的塔的尺寸的情况下，提供优异的生产率和所得产品的优良品质。 解决方案：该方法用于回收由丙烯或异丁烯的氨氧化反应的反应器流出物获得的丙烯腈或甲基丙烯腈。 该方法包括使反应器流出物通过吸收塔，第一滗析器，回收塔，第二滗析器和汽提塔的步骤。 通过将第一和第二倾析器的内部温度保持在约32至约75°F之间来提高该方法。 版权所有（C）2008，JPO＆INPIT

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.