Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1983-01-19
1984-06-05
Evans, J. E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
560204, 260466, C07C 3120, C07C 29136
Patent
active
044530269
ABSTRACT:
There is disclosed a process for continuously preparing ethylene glycol, which comprises (1) a first step of contacting a gas containing carbon monoxide and an ester of nitrous acid with a solid catalyst of platinum group metal series in the gaseous phase thereby to obtain a product containing a diester of oxalic acid, (2) a second step of condensing the product of the first step thereby to separate a non-condensed gas containing nitrogen monoxide formed by the catalytic reaction of the first step from a condensed liquid containing the diester of oxalic acid, (3) a third step of contacting the non-condensed gas of the second step with a gas containing molecular oxygen and an alcohol, and recycling the resulting gas containing an ester of nitrous acid to the first step, (4) a fourth step of contacting the condensed liquid of the second step containing the diester of oxalic acid and hydrogen with a catalyst for hydrogenation in the gaseous phase thereby to obtain a product containing ethylene glycol, (5) a fifth step of distilling the product of the fourth step thereby to distill out the alcohol and to obtain ethylene glycol, and (6) a sixth step of recycling the alcohol of the fifth step as an alcohol source for the third step.
REFERENCES:
patent: 4112245 (1978-09-01), Zehner et al.
patent: 4229591 (1980-10-01), Nishimura et al.
Fujii Kozo
Matsuda Masaoki
Mizutare Katsuhiko
Nishihira Keig
Tahara Susumu
Evans J. E.
Ube Industries Ltd.
LandOfFree
Process for continuously preparing ethylene glycol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for continuously preparing ethylene glycol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for continuously preparing ethylene glycol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1498993