Process to produce a dilute ethylene stream and a dilute propylene stream
First Claim
1. 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.
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Accused Products
Abstract
Processes are provided to produce a dilute ethylene stream and a dilute propylene stream from a cracked gas stream. One process comprises separating the cracked gas stream to produce a C3− stream and a C3+ stream; hydrogenating the C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce the dilute ethylene stream and routing the C3+ stream to storage or other process unit. Another process comprises separating a cracked gas stream in a depropanizer zone to form a C3− stream and a C4+ stream; separating the C3− stream in a deethanizer zone to form a C2− and a C3 stream; hydrogenating a portion of the acetylene in the C2− stream in a hydrogenation zone to produce a dilute ethylene stream; and routing the C3 stream to storage or other process unit.
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Citations
86 Claims
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1. 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:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 83, 84, 85, 86)
(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 wet cracked gas stream in a drying zone to form a cracked gas stream.
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9. A process according to claim 8 wherein said hydrocarbon feed is selected from the group consisting of ethane, propane, butanes, pentanes, naphtha, and mixtures thereof.
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10. A process according to claim 8 wherein said hydrocarbon feed consists essentially of C5 hydrocarbons.
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83. A process according to claims 1, 11, 21, 31, 40, 49, 58, 61, 64, 67, 70, 73, or 76 wherein a propylene oxide stream is produced by a process comprising the following steps:
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(1) reacting said dilute ethylene with benzene in an ethylbenzene reactor zone to form and ethylbenzene stream;
(2) oxidizing said ethylbenzene stream with air in an EB oxidation zone to form a EBHP stream;
(3) reacting said EBHP stream with a dilute propylene stream in a propylene epoxidation zone to form an impure propylene oxide stream;
(4) separating said impure propylene oxide stream in a product separator zone to form a raw propylene oxide stream, a MBA/ACP stream, a tail gas stream, and a residue stream;
(5) separating said raw propylene oxide stream in a propylene oxide separations zone to form an impurities stream and said propylene oxide stream; and
(6) reacting said MBA/ACP stream in a styrene production and separation zone to form a styrene stream, a fuel stream, and a wastewater stream.
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84. A process according to claims 1, 11, 21, 31, 40, 49, or 76 wherein an acrylic acid stream is produced by a process comprising the following steps:
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(1) oxidizing said dilute propylene stream in a oxidation reactor zone to form a aqueous acrylic acid stream and a vent gas stream; and
(2) separating said aqueous acrylic acid stream in a recovery and purification zone to form said acrylic acid stream and a mixed acid/ester waste stream.
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85. A process according to claims 1, 11, 21, 31, 40, 49, or 76 wherein a cumene stream is produced by a process comprising the following steps:
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(1) reacting a dilute propylene stream and a benzene feed stream in a dilute propylene alkylation zone to produce a raw cumene stream;
(2) separating said raw cumene stream in a cumene separations zone to form a benzene stream, a heavies stream, said cumene stream, a dipropyl benzene stream, and a propane stream. (3) transalkylating said benzene stream and dipropyl benzene stream in a transalkylation zone to form a transalkylated cumene rich stream;
(4) separating said transalkylated cumene-rich stream in said cumene separations zone to produce said cumene stream, said propane stream, said heavies stream and said benzene stream; and
(5) optionally, recycling a portion of said benzene stream to said dilute propylene alkylation zone.
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86. A process according to claims 1, 11, 21, 31, 40, 49, 58, 61, 64, 67, 70, 73, or 76 wherein a ethylbenzene stream is produced by a process comprising the following steps:
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(1) reacting a dilute ethylene stream and a benzene stream in an alkylation reactor zone to form an ethylbenzene rich stream;
(2) separating said ethylbenzene rich stream in a ethylbenzene separation zone to form a separations benzene recycle stream, a separations tail gas stream, a diethylbenzene and polyethylbenzene stream, and a ethylbenzene stream;
(3) reacting said separations benzene recycle stream in an ethylbenzene transalkylation reactor zone to produce said ethylbenzene rich stream; and
(4) optionally, recycling a portion of said separations benzene recycle stream to said dilute propylene alkylation reactor zone.
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11. 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:
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(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 second 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
(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.
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19. A process according to claim 18 wherein said hydrocarbon feed is selected from the group consisting of ethane, propane, butanes, pentanes, naphtha, and mixtures thereof.
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20. A process according to claim 18 wherein said hydrocarbon feed consists essentially of C5 hydrocarbons.
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21. 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:
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(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. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
(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 stream in a drying zone to produce a cracked gas stream.
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29. A process according to claim 28 wherein said hydrocarbon feed is selected from the group consisting of ethane, propane, butanes, pentanes, naphtha and mixtures thereof.
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30. A process according to claim 28 wherein said hydrocarbon feed consists essentially of C5 hydrocarbons.
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31. A process for producing a dilute ethylene stream and a dilute propylene stream, said process comprising the following steps in the order named:
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(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;
(9) separating said C3+ stream in a depropanizer zone to produce a C3 stream and a C4+ stream; and
(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. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A process for producing a dilute ethylene stream and a dilute propylene stream, said process comprising the following steps in the order named:
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(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;
(8) separating said C3+ stream in a depropanizer zone to produce a C3 stream and a C4+ stream; and
(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. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48)
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49. 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:
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(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;
(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 said dilute propylene stream. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57)
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58. A process for producing a dilute ethylene stream from a cracked gas stream, said process comprising the following steps in the order named:
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(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; and
(3) routing said C3+ stream to storage or other process unit. - View Dependent Claims (59, 60)
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61. A process for producing a dilute ethylene stream from a cracked gas stream, said process comprising the following steps in the order named:
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(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 second 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; and
(4) routing said C3+ stream to storage or other process unit. - View Dependent Claims (62, 63)
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64. A process for producing a dilute ethylene stream from a cracked gas stream, said process comprising the following steps in the order named:
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(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; and
(3) routing said C3+ stream to storage or other process unit. - View Dependent Claims (65, 66)
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67. A process for producing a dilute ethylene stream said process comprising the following steps in the order named:
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(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. - View Dependent Claims (68, 69)
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70. A process for producing a dilute ethylene stream, said process comprising the following steps in the order named:
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(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. - View Dependent Claims (71, 72)
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73. A process for producing a dilute ethylene stream, said process comprising the following steps in the order named:
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(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;
(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; and
(8) routing said C3+ stream to storage or other process unit. - View Dependent Claims (74, 75)
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76. A process for producing a dilute ethylene stream and a dilute propylene stream, said process comprising the following steps in the order named:
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(1) separating a cracked gas stream in a depropanizer zone to form a C3−
stream and a C4+ stream;
(2) separating said C3−
stream in a deethanizer zone to form a C2−
stream and a C3 stream;
(3) hydrogenating a portion of the acetylene in said C2−
stream in a hydrogenation zone to produce a dilute ethylene stream; and
(4) 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. - View Dependent Claims (77, 78, 79, 80, 81, 82)
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Specification