C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/14 (2006.01) C07C 29/141 (2006.01) C07C 31/20 (2006.01) C07C 45/58 (2006.01)
Patent
CA 2500615
The present invention is an improvement upon the process for the production of 1,3-propanediol wherein an aqueous solution of 3-hydroxy propanal is formed, catalyst, if any, used in said formation is removed from the solution, sodium hydroxide is added to the solution to neutralize any acid therein such that the pH is at least 5, the neutralized aqueous solution is subjected to hydrogenation to produce a crude 1,3-propanediol mixture which is distilled to produce 1,3-propanediol, water, and reactive heavy components. The improvement on this process comprises replacing the sodium hydroxide with a hydroxide selected from the group consisting of ammonium hydroxide, alkali metal hydroxides other than sodium hydroxide, and alkaline earth metal hydroxides to reduce the viscosity of the reactive heavy components.
La présente invention concerne une amélioration apportée au procédé de production de 1,3-propanediol. Selon ce procédé, on forme une solution aqueuse de 3-hydroxy propanal, on retire de la solution un catalyseur, s'il existe, utilisé dans la formation, on ajoute à la solution un hydroxyde de sodium afin de neutraliser tout acide présent dans celle-ci de sorte que le pH soit d'au moins 5, et on soumet la solution aqueuse neutralisée à l'hydrogénation afin d'obtenir un mélange de 1,3-propanediol brut qui est distillé afin d'obtenir 1,3-propanediol, de l'eau et des composants lourds réactifs. L'amélioration apportée à ce procédé consiste à remplacer l'hydroxyde de sodium par un hydroxyde sélectionné dans le groupe comprenant un hydroxyde d'ammonium, des hydroxydes alcalins différents de l'hydroxyde de sodium, et des hydroxydes alcalino-terreux afin de réduire la viscosité des composants lourds réactifs.
James Talmadge Gail
Knifton John Frederick
Komplin Glenn Charles
Nielsen Edward Lewis
Powell Joseph Broun
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Shell Internationale Research Maatschappij B.v.
LandOfFree
Reduction of the viscosity of reactive heavy byproducts... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reduction of the viscosity of reactive heavy byproducts..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduction of the viscosity of reactive heavy byproducts... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1610619