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:
Jan. 18, 2022
Filed:
Dec. 19, 2017
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Abdullah Saad Al-Dughaiter, Riyadh, SA;
Shahid Azam, Riyadh, SA;
Abdulmajeed Mohammed Al-Hamdan, Riyadh, SA;
Dafer Mubarak Alshahrani, Riyadh, SA;
Ralf Noack, Dresden, DE;
Tobias Meier, Dresden, DE;
Gabriel Waurick, Dresden, DE;
Heinz Bolt, Wolfratshausen, DE;
Andreas Meiswinkel, Prien, DE;
Wolfgang Müller, Munich, DE;
Anina Wohl, Munich, DE;
Hans-Jorge Zander, Munich, DE;
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Abstract
A method of column control includes: passing a feed stream and a make-up stream through a column; withdrawing an overhead fraction from the column; purging at least a portion of the overhead fraction; cooling at least a portion of the overhead fraction in a heat exchanger and passing it through a reflux drum; withdrawing a purge stream and a distillate stream from the reflux drum, wherein the distillate stream has a constant flow rate; recycling at least a portion of the distillate stream back to the column; and passing at least a portion of the distillate stream to a downstream process.