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:
Nov. 14, 2006
Filed:
Feb. 13, 2003
Applicants:
Horst Corduan, Puchheim, DE;
Dietrich Rottmann, München, DE;
Inventors:
Horst Corduan, Puchheim, DE;
Dietrich Rottmann, München, DE;
Assignee:
Linde AG, Wiesbaden, DE;
Primary Examiner:
Int. Cl.
CPC ...
F25J 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for the low-temperature fractionation of air in a rectification unit, which comprises a pressure column () a low-pressure column () and a condenser-evaporator system having at least two falling-film evaporators (). Oxygen-rich liquid from the low-pressure column () is introduced into the evaporation passages of the first and second falling-film evaporators () and is partially evaporated. Unevaporated oxygen-rich liquid from the first falling-film evaporator () is transferred into the evaporation passages of the second falling-film evaporator ().