Back to results
US 6,783,659 B2Granted
Process to produce a dilute ethylene stream and a dilute propylene stream
AssigneeChevron Phillips Chemical Company LP
InventorsRodney L. Porter, Anne M. Balinsky, Eric P. Weber
Life of this patent
Estimating the term…
Abstract
A process is provided to produce a dilute ethylene stream and a dilute propylene stream to be used as feedstocks for producing olefin-based derivatives. Specifically, the dilute ethylene stream is used as a feedstock to produce ethylbenzene, and the dilute propylene stream is used as a feedstock to produce cumene, acrylic acid, propylene oxide and other propylene based derivatives.
Claims75
A process for producing a dilute ethylene stream and a dilute propylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (2). hydrogenating said C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- (3) separating said C3+ stream in a depropanizer zone to produce a C3− stream and a C4+ stream;
- and
- (4) reacting said C3− stream in a MAPD reactor zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce said dilute propylene stream.
2 more elements
A process for producing a dilute ethylene stream and a dilute propylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (2) compressing said C2− stream in a compression zone to form a pressurized C2− stream;
- (3) hydrogenating said pressurized C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- (4) separating said C3+ stream in a depropanizer zone to produce a C3− stream and a C4+ stream;
- and
- (5) reacting said C3− stream in a MAPD reactor zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce said dilute propylene stream.
3 more elements
A process for producing a dilute ethylene stream and a dilute propylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) hydrogenating a portion of the acetylene in said cracked gas stream in a hydrogenation zone to produce a reduced acetylene cracked gas stream;
- (2) separating said reduced acetylene cracked gas stream in a deethanizer zone to produce said dilute ethylene stream and a C3+ stream;
- (3) separating said C3+ stream in said depropanizer zone to produce a C3− stream and a C4+ stream;
- and
- (4) reacting said C3− stream in a MAPD reactor zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce the dilute propylene stream.
2 more elements
A process for producing a dilute ethylene stream and a dilute propylene stream, said process comprising the following steps in the order named:
- (1) heating a hydrocarbon feed in a cracking zone to form a raw cracked gas stream;
- wherein said cracked gas stream comprises hydrogen, methane, C2 hydrocarbons, C3 hydrocarbons and heavier constituents;
- (2) quenching said raw cracked gas stream in a quenching zone to produce a quenched, cracked gas stream;
- (3) compressing said quenched, cracked gas stream in a first compression zone to form a pressurized cracked gas stream;
- (4) deacidifying said pressurized, cracked gas stream in a deacidifying zone to remove a portion of the hydrogen sulfide to form a wet cracked gas stream;
- (5) drying said wet cracked gas stream in a drying zone to produce a cracked gas stream;
- (6) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (7) compressing said C2− stream in a second compression zone to form a pressurized C2− stream;
- (8) hydrogenating said pressurized C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- and
- (9) separating said C3+ stream in a depropanizer zone to produce said dilute propylene stream and a C4+ stream;
- (10) reacting said C3− stream in a MAPD reactor zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce said dilute propylene stream.
9 more elements
A process for producing a dilute ethylene stream and a dilute propylene stream, said process comprising the following steps in the order named:
- (1) heating a hydrocarbon feed in a cracking zone to form a cracked gas stream;
- wherein said cracked gas stream comprises hydrogen, methane, C2 hydrocarbons, C3 hydrocarbons, and heavier constituents;
- (2) quenching said raw cracked gas stream in a quenching zone to produce a quenched, cracked gas stream;
- (3) compressing said quenched, cracked gas stream in a first compression zone to form a pressurized cracked gas stream;
- (4) deacidifying said pressurized, cracked gas stream in a deacidifying zone to remove a portion of the hydrogen sulfide to form a wet cracked gas stream;
- (5) drying said wet cracked gas stream in a drying zone to produce a cracked gas stream;
- (6) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (7) hydrogenating said pressurized, C2− stream in said hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- and
- (8) separating said C3+ stream in a depropanizer zone to produce said dilute propylene stream and a C4+ stream;
- (9) reacting said C3− stream in a MAPD zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce said dilute propylene stream.
8 more elements
A process for producing a dilute ethylene stream and a dilute propylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) heating a hydrocarbon feed in a cracking zone to form a raw cracked gas stream;
- wherein said raw cracked gas stream comprises hydrogen, methane, C2 hydrocarbons, C3 hydrocarbons, and heavier constituents;
- (2) quenching said raw cracked gas stream in a quenching zone to produce a quenched, cracked gas stream;
- (3) compressing said quenched, cracked gas stream in a first compression zone to form a pressurized cracked gas stream;
- (4) deacidifying said pressurized, cracked gas stream in a deacidifying zone to remove a portion of the hydrogen sulfide to form a wet cracked gas stream;
- and
- (5) drying said cracked gas stream in a drying zone to produce a cracked gas stream;
- (6) hydrogenating a portion of the acetylene in said cracked gas stream in a hydrogenation zone to produce a reduced acetylene cracked gas stream;
- (7) separating said reduced acetylene cracked gas stream in a deethanizer zone to produce said dilute ethylene stream and a C3+ stream;
- (8) separating said C3+ stream in said depropanizer zone to produce a C3− stream and a C4+ stream;
- and
- (9) reacting said C3− stream in a MAPD reactor zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce the dilute propylene stream.
9 more elements
A process for producing a dilute ethylene stream and a dilute propylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (2). hydrogenating said C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- (3) routing said C3+ stream to storage or other process unit.
A process for producing a dilute ethylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (2) compressing said C2− stream in a compression zone to form a pressurized C2− stream;
- (3) hydrogenating said pressurized C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- (4) routing said C3+ stream to storage or other process unit.
1 more element
A process for producing a dilute ethylene stream from a cracked gas stream, said process comprising the following steps in the order named:
- (1) hydrogenating a portion of the acetylene in said cracked gas stream in a hydrogenation zone to produce a reduced acetylene cracked gas stream;
- (2) separating said reduced acetylene cracked gas stream in a deethanizer zone to produce said dilute ethylene stream and a C3+ stream;
- (3) routing said C3+ stream to storage or other process unit.
A process for producing a dilute ethylene stream said process comprising the following steps in the order named:
- (1) heating a hydrocarbon feed in a cracking zone to form a raw cracked gas stream;
- wherein said cracked gas stream comprises hydrogen, methane, C2 hydrocarbons, C3 hydrocarbons and heavier constituents;
- (2) quenching said raw cracked gas stream in a quenching zone to produce a quenched, cracked gas stream;
- (3) compressing said quenched, cracked gas stream in a first compression zone to form a pressurized cracked gas stream;
- (4) deacidifying said pressurized, cracked gas stream in a deacidifying zone to remove a portion of the hydrogen sulfide to form a wet cracked gas stream;
- (5) drying said wet cracked gas stream in a drying zone to produce a cracked gas stream;
- (6) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (7) compressing said C2− stream in a second compression zone to form a pressurized C2− stream;
- (8) hydrogenating said pressurized C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- and
- (9) routing said C3+ stream to storage or other process unit.
8 more elements
A process for producing a dilute ethylene stream, said process comprising the following steps in the order named:
- (1) heating a hydrocarbon feed in a cracking zone to form a cracked gas stream;
- wherein said cracked gas stream comprises hydrogen, methane, C2 hydrocarbons, C3 hydrocarbons, and heavier constituents;
- (2) quenching said raw cracked gas stream in a quenching zone to produce a quenched, cracked gas stream;
- (3) compressing said quenched, cracked gas stream in a first compression zone to form a pressurized cracked gas stream;
- (4) deacidifying said pressurized, cracked gas stream in a deacidifying zone to remove a portion of the hydrogen sulfide, to form a wet cracked gas stream;
- (5) drying said wet cracked gas stream in a drying zone to produce a cracked gas stream;
- (6) separating said cracked gas stream in a deethanizer zone to produce a C2− stream and a C3+ stream;
- (7) hydrogenating said pressurized, C2− stream in said hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream;
- and
- (8) routing said C3+ stream to storage or other process unit.
7 more elements
A process for producing a dilute ethylene stream, said process comprising the following steps in the order named:
- (1) heating a hydrocarbon feed in a cracking zone to form a raw cracked gas stream;
- wherein said raw cracked gas stream comprises hydrogen, methane, C2 hydrocarbons, C3 hydrocarbons, and heavier constituents;
- (2) quenching said raw cracked gas stream in a quenching zone to produce a quenched, cracked gas stream;
- (3) compressing said quenched, cracked gas stream in a first compression zone to form a pressurized cracked gas stream;
- (4) deacidifying said pressurized, cracked gas stream in a deacidifying zone to remove a portion of the hydrogen sulfide to form a wet cracked gas stream;
- and
- (5) drying said cracked gas stream in a drying zone to produce a cracked gas stream;
- (6) hydrogenating a portion of the acetylene in said cracked gas stream in a hydrogenation zone to produce a reduced acetylene cracked gas stream;
- (7) separating said reduced acetylene cracked gas stream in a deethanizer zone to produce said dilute ethylene stream and a C3+ stream;
- (8) routing said C3+ stream to storage or other process unit.
7 more elements
Dependencies are inferred from the claim text.