The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 1990
Filed:
Jan. 30, 1989
Ramesh N Gujarathi, Akron, OH (US);
Carole I Wendt, N. Canton, OH (US);
Edward K Kazanjian, Irvine, CA (US);
Ann M Jones, Simpensville, SC (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
The present invention relates to a process for reducing the concentration of acrylontrile in an aqueous-acrylonitrile vapor stream. The process involves feeding the aqueous-acrylontrile vapor stream to a primary condenser maintained at a temperature and pressure so that a substantial amount of the water is condensed and the acrylonitrile is maintained in the vapor phase. The vapor containing the acrylonitrile from the first condenser is introduced to a secondary condenser maintained at a temperature and pressure so that substantially all the vapor is condensed. The condensate exiting the secondary condenser is introduced to a decanter where the acrylonitrile containing organic phase of the condensate is separated and recovered from the aqueous phase. The aqueous phase is recycled to the primary condenser to significantly reduce the acrylonitrile level in the aqueous phase and enhanced the separation.