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:
Mar. 31, 1987
Filed:
Jan. 31, 1986
Chen-Yen Cheng, Albuquerque, NM (US);
Wu-Ching Cheng, Albuquerque, NM (US);
Wu-Cheh Cheng, Albuquerque, NM (US);
Other;
Abstract
A process of separating a multi-component liquid mixture containing n major components by forming crystals of m components, denoted as m crystallizing components, in a crystallization zone, denoted as a first processing zone, having k crystallization sub-zones, the value of m being equal to or greater than 2 and equal to or less than n, the value of k being equal to or greater than 1 and equal to or less than m, comprising a first step of crystallizing the m components in the k crystallization sub-zones to form a first condensed mass and a second step of vaporizing a mass of the volatile component(s) from the liquid mixture to form a first vapor in each sub-zone under a first pressure that is lower than the eutectic pressure defined as the equilibrium pressure at which the m solid phases and the liquid mixture co-exist with a vapor phase containing the volatile component(s), wherein the said first step and the second step are conducted simultaneously so that at least a major fraction of the heat released in Step 1 operation is removed by the Step 2 operation in each sub-zone.