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:
May. 26, 1998
Filed:
Jan. 30, 1996
Applicant:
Inventor:
David B Manley, Rolla, MO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62620 ; 62630 ;
Abstract
The present invention is an improvement in distillation column interreboiling. Previously, hot bottoms streams could be used to heat interreboilers, although heat recovery was limited by approach temperatures of a stream losing sensible heat to a stream gaining sensible heat and heat of vaporization. The present invention expands the number of stages between the draw and return stages for an interreboiler, thus increasing the heat recovery from the bottom stream and reducing hot utilities to the reboiler, among other important advantages. The present invention is shown for NGL deethanization.