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:
Dec. 02, 2014
Filed:
Oct. 01, 2009
Andrei S. Merenov, Lake Jackson, TX (US);
Luca Balbo, Lake Jackson, TX (US);
Douglas A. Stallard, Lake Jackson, TX (US);
John G. Pendergrast, Jr., Lake Jackson, TX (US);
Joerg-peter Gehrke, Stade, DE;
Amilcar R. Collado, Clute, TX (US);
David D. Hibbitts, Charlottesville, VA (US);
Andrei S. Merenov, Lake Jackson, TX (US);
Luca Balbo, Lake Jackson, TX (US);
Douglas A. Stallard, Lake Jackson, TX (US);
John G. Pendergrast, Jr., Lake Jackson, TX (US);
Joerg-Peter Gehrke, Stade, DE;
Amilcar R. Collado, Clute, TX (US);
David D. Hibbitts, Charlottesville, VA (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components. In some embodiments, fractionating an isocyanate feed mixture may comprise distilling the feed mixture in a non-adiabatic fractionating apparatus comprising a prefractionating section and/or column and a main section and/or column, which comprises a rectification section, a side section, and a stripping section. For example, isocyanates may be separated from light component(s), solvent(s) and/or heavier component(s). A fractionating apparatus may be configured and arranged, in some embodiments, as a dividing wall column. According to some embodiments of the disclosure, apparatus, systems, and/or methods may be energy efficient and/or may have a broad operating range.