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:
Dec. 03, 1991
Filed:
Sep. 24, 1990
Applicant:
Inventors:
Aldo Bertola, Milan, IT;
Roberto Ruggieri, Basiglio, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 44 ; 55 48 ; 55 75 ; 55 53 ; 549262 ;
Abstract
Process for the recovery of maleic anhydride from a gaseous mixture thereof, in which the gaseous mixture containing maleic anhydride is contacted with an absorbant for the maleic anhydride to give an enriched absorbant. Water present in the enriched absorbant is then substantially removed by contacting the enriched absorbant with a water adsorbant or with a low humidity stripping gas to produce a dried enriched absorbant. The maleic anhydride is then recovered from the dried enriched absorbant.