Back to results
US 7,405,329 B2Granted
Hydroformylation
AssigneeExxonMobil Chemical Patents Inc.
InventorsStephen Wayne Beadle, Ronald Dean Garton, Hubertus Joseph Beckers, Raphael Frans Caers, Arie Van Vliet, John J. Houben
Life of this patent
Estimating the term…
Abstract
The gas cycle in a high pressure hydroformylation reaction using a series of at least two reactors is controlled to optimise yield, conversion and selectivity and to control reaction temperature. The control is achieved through balancing fresh gases and recycle gases in each of the reactors and as an optional feature the use of hydrogen off gases from the downstream hydrogenation used in the conversion of the hydroformylation reaction product to product alcohols.
Claims30
A process comprising:
- hydroformylating at least one olefin with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst to form a hydroformylation product, wherein the hydroformylation takes place in a series of at least two hydroformylation reactors;
- recycling unreacted gases to at least the hydroformylation reactor in the second position, wherein the unreacted gases originate from the hydroformylation step or from a subsequent hydrogenation step;
- passing the hydroformylation product to a high pressure separator and separating an offgas having a concentration of carbon monoxide such that the partial pressure of carbon monoxide in the offgas is above 75 barg.
Dependencies are inferred from the claim text.