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公开(公告)号：US12024685B2
公开(公告)日：2024-07-02
申请号：US17299878
申请日：2019-12-13
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： George Stephens , David Spicer , Gregory E. Yeo , Stephen R. Phillips
CPC classification number: C10G9/206 , C10G9/203 , C10G9/36 , C10G2300/1037 , C10G2300/4006 , C10G2300/4012 , C10G2300/4031 , C10G2300/807 , C10G2400/20
Abstract: Systems and methods are provided for performing ethane steam cracking at elevated coil inlet pressures and/or elevated coil outlet pressures in small diameter furnace coils. Instead of performing steam cracking of ethane at a coil outlet pressure of ˜22 psig or less (˜150 kPa-g or less), the steam cracking of ethane can be performed in small diameter furnace coils at a coil outlet pressure of 30 psig to 75 psig (˜200 kPa-g to ˜520 kPa-g), or 40 psig to 75 psig (˜270 kPa-g to ˜520 kPa-g). In order to achieve such higher coil outlet pressures, a correspondingly higher coil inlet pressure can also be used, such as a pressure of 45 psig (˜310 kPa-g) or more, or 50 psig (˜340 kPa-g) or more.
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公开(公告)号：US20240110110A1
公开(公告)日：2024-04-04
申请号：US17768663
申请日：2020-09-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Reyyan Koc-Karabocek , James R. Lattner , William A. Aslaner , David Spicer , Mark A. Rooney
CPC classification number: C10G70/04 , C10G69/06 , C10G2300/202 , C10G2300/308 , C10G2300/4006 , C10G2300/4081 , C10G2400/20
Abstract: Processes and systems for quenching an effluent. In certain embodiments, the process can include contacting a pyrolysis effluent and a first quench medium to produce a first quenched effluent. A bottoms stream that can include tar and an overhead stream that can include ethylene and propylene can be obtained from the first quenched effluent. The first quench medium can include a first portion of the bottoms stream that can include a first portion of the tar. In certain embodiments, the process can also include hydroprocessing a second portion of the bottoms stream that can include a second portion of the tar to produce a hydroprocessed product. A hydroprocessed bottoms stream can be obtained from the hydroprocessed product. In certain embodiments, the process can also include contacting at least a portion of the hydroprocessed bottoms stream and the first portion of the bottoms stream to produce the first quench medium.
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公开(公告)号：US11512257B1
公开(公告)日：2022-11-29
申请号：US17484042
申请日：2021-09-24
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David Spicer , Thomas T. Hirst , James L. Kendall , You Fang , Steven M. Slack
Abstract: An H2-rich fuel gas production plant comprising a syngas production unit can be advantageously integrated with an olefins production plant comprising a steam cracker in at least one of the following: (i) fuel gas supply and consumption; (ii) feed supply and consumption; and (iii) steam supply and consumption, to achieve considerable savings in capital and operational costs, enhanced energy efficiency, and reduced CO2 emissions, compared to operating the plants separately.
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公开(公告)号：US11479462B1
公开(公告)日：2022-10-25
申请号：US17483960
申请日：2021-09-24
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David Spicer
Abstract: A high-pressure steam stream produced from the waste heat recovery system of a syngas producing unit may be superheated and then supplied to a steam turbine in a hydrocarbon production plant to produce an expanded steam stream and shaft power. A portion of the expanded stream can be fed into the reforming reactor in the syngas producing unit. The shaft power can be used to drive compressors and pumps in an olefins production plant. Considerable energy efficiency and capital investment savings can be realized by such steam integration compared to running the olefins production plant separately.
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15.发明授权公开(公告)号：US10669487B2
公开(公告)日：2020-06-02
申请号：US16194086
申请日：2018-11-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David Spicer , Philippe J. Le Roy , George Stephens
Abstract: A method and apparatus of reducing thermal shock in one or more radiant tubes of a pyrolysis furnace is provided. The apparatus is a furnace comprising a blower and blower bypass conduit providing separate fluid communication paths for flue gas from the convection section to a natural draft flue gas stack. The method comprises the steps of: redirecting at least a portion of the flue gas through the blower bypass conduit when a blower shut-off event is indicated as well as reducing the firing rate of the furnace.
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Patent Agency Ranking
公开(公告)号：US12187967B2
公开(公告)日：2025-01-07
申请号：US17768663
申请日：2020-09-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Reyyan Koc-Karabocek , James R. Lattner , William A. Aslaner , David Spicer , Mark A. Rooney
Abstract: Processes and systems for quenching an effluent. In certain embodiments, the process can include contacting a pyrolysis effluent and a first quench medium to produce a first quenched effluent. A bottoms stream that can include tar and an overhead stream that can include ethylene and propylene can be obtained from the first quenched effluent. The first quench medium can include a first portion of the bottoms stream that can include a first portion of the tar. In certain embodiments, the process can also include hydroprocessing a second portion of the bottoms stream that can include a second portion of the tar to produce a hydroprocessed product. A hydroprocessed bottoms stream can be obtained from the hydroprocessed product. In certain embodiments, the process can also include contacting at least a portion of the hydroprocessed bottoms stream and the first portion of the bottoms stream to produce the first quench medium.
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公开(公告)号：US12098337B2
公开(公告)日：2024-09-24
申请号：US17933774
申请日：2022-09-20
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David Spicer , James C. Slonaker , Thomas T. Hirst
CPC classification number: C10G9/002 , F28C3/06 , F28D7/106 , F28F1/003 , F28D7/16 , F28D2021/0059 , F28F2230/00 , F28F2255/02
Abstract: Conduits for cooling a hydrocarbon stream and processes for using same. The conduit can include a first inner wall defining a first bore, a second inner wall defining a second bore, and an outer wall disposed about the first and second inner walls. The conduit can also include an annular support wall connected to an inner surface of the outer wall. An end of the second inner wall and an end of the annular support wall can define a perimeter opening that can be in fluid communication with the second bore. An annular flexible ring can be bonded to the annular support wall and can flexibly contact the first inner wall. A substantially annular cavity can be disposed between the second inner and the outer walls and in fluid communication with the perimeter opening. A quench fluid introduction port can be configured to introduce a quench fluid into the cavity.
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公开(公告)号：US12097464B2
公开(公告)日：2024-09-24
申请号：US17484068
申请日：2021-09-24
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David Spicer , James L. Kendall , Steven M. Slack
CPC classification number: B01D53/1406 , B01D53/1425 , B01D53/185 , F01K7/12 , F01K17/04 , B01D2252/204 , B01D2257/504
Abstract: An exhaust steam stream having an absolute pressure from 200 kPa to 1,050 kPa and shaft power are produced from an extraction turbine and/or a back-pressure turbine. The exhaust steam stream can be supplied to an amine regenerator of an amine CO2 separation process. The shaft power can be utilized to drive equipment in a hydrocarbon processing plant such as an olefins production plant.
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公开(公告)号：US12024684B2
公开(公告)日：2024-07-02
申请号：US17624634
申请日：2020-07-22
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： William A. Aslaner , Thomas T. Hirst , David Spicer , George Stephens
Abstract: Furnace systems and methods for steam cracking hydrocarbons to produce ethylene and other light olefins are provided herein. A furnace system for cracking hydrocarbons includes a radiant firebox containing a plurality of burners and an injection nozzle, a primary transfer line exchanger fluidly coupled to and downstream of the radiant firebox, and a flow restrictor fluidly coupled to and downstream of the primary transfer line exchanger. The furnace system also includes a decoke vessel containing an effluent inlet, a fluid outlet, and a coke outlet, where the effluent inlet is fluidly coupled to and downstream of the flow restrictor and the fluid outlet is fluidly coupled to and upstream of the injection nozzle of the radiant firebox, and a coke collection bin is coupled to the coke outlet of the decoke vessel.
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公开(公告)号：US11498834B1
公开(公告)日：2022-11-15
申请号：US17483939
申请日：2021-09-24
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David Spicer , Thomas T. Hirst , James L. Kendall , You Fang
Abstract: An H2-rich fuel gas stream can be advantageously produced by reforming a hydrocarbon/steam mixture in to produce a reformed stream, followed by cooling the reformed stream in a waste-heat recovery unit to produce a high-pressure steam stream, shifting the cooled reformed stream a first shifted stream, cooling the first shifted stream, shifting the cooled first shifted stream to produce a second shifted stream, cooling the second shifted stream, abating water from the cooled second shifted stream to obtain a crude gas mixture stream comprising H2 and CO2, and recovering a CO2 stream from the crude gas mixture stream. The H2-rich stream can be advantageously combusted to provide thermal energy needed for residential, office, and/or industrial applications including in the H2-rich fuel gas production process. The H2-rich fuel gas production process can be advantageously integrated with an olefins production plant comprising a steam cracker.
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