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:
Feb. 11, 2014
Filed:
Jul. 27, 2011
Brian Hanley, Lowell, MA (US);
Brian Hanley, Lowell, MA (US);
Aspen Technology, Burlington, MA (US);
Abstract
A method of designing or optimizing a column for a separation process includes the computer implemented steps of, in a digital processor, providing vapor-side and liquid-side mass transfer coefficient expressions and a mass transfer area expression relevant for a subject column, the vapor-side and liquid-side mass transfer coefficient expressions and the mass transfer area expression having been derived from defining a column average height equivalent to a theoretical plateHETP) as a mathematical relationship in whichHETPis proportional to a vapor flow rate, is inversely proportional to effective packing area participating in mass transfer, has a first correction factor with respect to liquid-side mass transfer, and has a second correction factor with respect to vapor-side mass transfer. The expressions are further derived from reducing error of curve fittingHETPempirical data of various columns by using the definedHETPto obtain expressions for the vapor-side and liquid-side mass transfer coefficients and mass transfer area. The method also includes using the provided expressions to determine column height and column width configurations of the subject column, and outputting the determined column height and column width configurations of the subject column.