US 11,155,510 B2 · Hydroformylation system with vent reactor recycle to primary reactor

Abstract

A hydroformylation system for making aldehydes includes: (a) a primary reactor provided with catalyst feed, syngas feed and olefin feed adapted to convert the olefin and syngas to product aldehyde; (b) a first liquid vapor separator coupled to the primary reactor for receiving output therefrom, adapted to separate the product aldehyde into a crude aldehyde product stream and a vent stream containing syngas and unreacted olefin; (c) a vent reactor coupled to the first liquid vapor separator to receive the vent stream therefrom, the vent reactor also being coupled to the primary reactor which is configured to provide catalyst thereto, wherein the vent reactor is operative to convert unreacted olefin in the vent stream from the first liquid vapor separator to additional product aldehyde. A second liquid vapor separator is coupled to the vent reactor to receive output therefrom and adapted to separate the output from the vent reactor into a liquid recycle stream containing additional product aldehyde and catalyst as well as another vent stream, the second liquid vapor separator also being coupled to the primary reactor so as to provide the recycle stream thereto.

Claims22

Dependent claims

A hydroformylation system for making aldehydes comprising:

(a) a primary reactor provided with catalyst feed, syngas feed and olefin feed adapted to convert the olefin and syngas to product aldehyde;
(b) a first liquid vapor separator coupled to the primary reactor for receiving output therefrom, adapted to separate the product aldehyde into a crude aldehyde product stream and a vent stream containing syngas and unreacted olefin;
(c) a vent reactor coupled to the first liquid vapor separator to receive the vent stream therefrom, the vent reactor also being coupled to the primary reactor which is configured to provide catalyst thereto, wherein the vent reactor is operative to convert unreacted olefin in the vent stream from the first liquid vapor separator to additional product aldehyde;
(d) a second liquid vapor separator coupled to the vent reactor so as to receive the entire output from the vent reactor and adapted to separate the output from the vent reactor into a liquid recycle stream containing additional product aldehyde and catalyst as well as another vent stream, the second liquid vapor separator also being coupled to the primary reactor so as to provide the recycle stream thereto;
whereby catalyst from the second liquid vapor separator is recycled to the primary reactor and additional product aldehyde from the second liquid vapor separator is provided to the primary reactor and is recovered in the crude aldehyde product stream from the first liquid vapor separator.

2 more elements

A method of making aldehydes from olefins and syngas by way of hydroformylation comprising:

(a) feeding catalyst, syngas and olefin to a primary reactor;
(b) converting the syngas and olefin to a product aldehyde in the primary reactor;
(c) providing the product aldehyde and unreacted syngas and unreacted olefin from the primary reactor to a first liquid vapor separator;
(d) separating the product aldehyde and unreacted olefin into a liquid crude aldehyde product stream and a vaporous vent stream containing unreacted syngas and olefin;
(e) feeding the vaporous vent stream from the first liquid vapor separator and catalyst from the primary reactor to a vent reactor;
(f) converting unreacted olefin and syngas from the vaporous vent stream received from the first liquid vapor separator to additional product aldehyde in the vent reactor;
(g) feeding the entire output from the vent reactor to a second liquid vapor separator;
(h) separating output from the vent reactor into a liquid stream containing additional product aldehyde and catalyst and an offgas stream;
(i) returning the liquid stream containing additional product aldehyde and catalyst from the second liquid vapor separator to the primary reactor,
whereby catalyst from the second liquid vapor separator is recycled to the primary reactor and additional product aldehyde from the second liquid vapor separator is provided to the primary reactor and is recovered in the crude aldehyde product stream from the first liquid vapor separator.

7 more elements

Dependencies are inferred from the claim text.

Hydroformylation system with vent reactor recycle to primary reactor

Life of this patent

Hydroformylation system with vent reactor recycle to primary reactor

Life of this patent

Abstract

Claims22