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:
Jul. 22, 1986
Filed:
Aug. 30, 1984
Michael J Dolan, Brecksville, OH (US);
Norton Company, Worcester, MA (US);
Abstract
Existing fractional distillation columns, especially those in extensive commercial use for separating the lower molecular weight hydrocarbons, are often limited in the quality of separation achievable by the heat-absorbing capacity of and/or the minimum operating temperature of their associated refrigeration equipment. The separation efficiency of such equipment can be improved by introducing an auxiliary material into the equipment to provide additional reflux volume without the need for added refrigeration capacity. The auxiliary material must be less volatile than the primary constituent(s) of the off-gas from the column, and it advantageously should also be less volatile than the majority of the bottoms stream from the column, in order to facilitate later separation.