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:
Oct. 23, 2012
Filed:
Sep. 12, 2007
Helmut Schmidtke, Bensheim, DE;
Oliver Buβmann, Ludwigshafen, DE;
Ralph Versch, Eppelsheim, DE;
Udo Rheude, Otterstadt, DE;
Uwe Leyk, Worms, DE;
Manfred Julius, Limburgerhof, DE;
Martin Rudloff, Gönnheim, DE;
Erhard Henkes, Einhausen, DE;
Helmut Schmidtke, Bensheim, DE;
Oliver Buβmann, Ludwigshafen, DE;
Ralph Versch, Eppelsheim, DE;
Udo Rheude, Otterstadt, DE;
Uwe Leyk, Worms, DE;
Manfred Julius, Limburgerhof, DE;
Martin Rudloff, Gönnheim, DE;
Erhard Henkes, Einhausen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Processes for the continuous fractional distillation of a mixture containing morpholine (MO), monoaminodiglycol (ADG), ammonia and water from a reaction of diethylene glycol (DEG) with ammonia, the process including: (i) separating off ammonia from the mixture at a top of a first distillation column K; (ii) feeding a bottom fraction from Kto a second distillation column K, in which water and an organic product are separated off at the top at a temperature at the top in the range from 45 to 198° C. and a pressure in the range from 0.1 to 15 bar; (iii) feeding a bottom fraction from Kto a third distillation column K, wherein the column Kis a dividing wall column (DWC)which preferably has a dividing wall (DW) in the longitudinal direction of the column to form an upper combined column region (), a lower combined column region (), an inflow part () having an enrichment section () and a stripping section (), and also an offtake part () having an enrichment section () and a stripping section (), with the bottoms from Kbeing fed in in the upper or middle third of the inflow part (), based on the number of theoretical plates of the inflow part, ADG and organic products having a boiling point of >190° C. (1.013 bar) being discharge at the bottom, organic products having a boiling point of ≦128° C. (1.013 bar) being discharge at a top and MO being discharge from the middle or lower third of the offtake part () (side offtake), based on the number of theoretical plates of the offtake part.