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公开(公告)号：WO2021230917A2
公开(公告)日：2021-11-18
申请号：PCT/US2020/066177
申请日：2020-12-18
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： ROONEY, Mark, A. , HIRST, Thomas, T.
Abstract: Processes, systems, and apparatus are provided for using a common working fluid for one or more turbines for processing a process gas and for the furnace for the pyrolysis process used to produce the process gas. The turbine(s) are operated based on a modified Allam cycle to produce power for operating one or more compressors and/or refrigerators involved in processing of the process gas while producing a reduced or minimized amount of CO2 that is released as a low-pressure gas phase product. Integrating the pyrolysis furnace with the working fluid loop can provide further benefits.
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公开(公告)号：WO2021016291A1
公开(公告)日：2021-01-28
申请号：PCT/US2020/042964
申请日：2020-07-22
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： ASLANER, William, A. , HIRST, Thomas, T. , SPICER, David , STEPHENS, George
Abstract: Fumace 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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Patent Agency Ranking
公开(公告)号：WO2023287602A1
公开(公告)日：2023-01-19
申请号：PCT/US2022/036040
申请日：2022-07-02
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： HIRST, Thomas, T. , ROONEY, Mark, A.
Abstract: A hybrid steam cracking process including, in addition to combusting a fuel in a steam cracker furnace to provide thermal energy to the radiant and convection sections, heating a segment of an external furnace piping using an electrical heating device. The external furnace piping can include, e.g., the hydrocarbon-containing feed inlet piping, the cross-over piping, the radiant section inlet piping, and the radiant section outlet piping. Capacity and selectivity of the steam cracker furnace can be enhanced compared to conventional steam cracking process without electrical heating. The technology can be conveniently deployed in existing conventional steam cracking facilities.
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公开(公告)号：WO2022150218A1
公开(公告)日：2022-07-14
申请号：PCT/US2021/065604
申请日：2021-12-30
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： HIRST, Thomas, T. , STEPHENS, George , SPICER, David
Abstract: Processes and systems for pyrolysing a hydrocarbon. In some examples, the process can include mixing a cooled hydrocarbon effluent and a cooled de-coking effluent to produce a combined effluent. The combined effluent can be introduced into an inlet conduit of a separator under conditions that provide > 80 wt. % of the plurality of coke particles with a Stokes number of > 10. From a first exit conduit of the separator > 55 wt. % of the plurality of coke particles in the combined effluent can be removed, and from a second exit conduit of the separator a coke-lean hydrocarbon effluent that includes
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公开(公告)号：WO2021016301A1
公开(公告)日：2021-01-28
申请号：PCT/US2020/042987
申请日：2020-07-22
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： ASLANER, William, A. , HIRST, Thomas, T. , SPICER, David , STEPHENS, George
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：WO2023049574A1
公开(公告)日：2023-03-30
申请号：PCT/US2022/075276
申请日：2022-08-22
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： SPICER, David , HIRST, Thomas, T. , KENDALL, James, L. , FANG, You , SLACK, Steven, M.
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：WO2023049570A1
公开(公告)日：2023-03-30
申请号：PCT/US2022/075265
申请日：2022-08-22
Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
Inventor： SPICER, David , HIRST, Thomas, T. , KENDALL, James, L. , FANG, You
IPC: C01B3/38 , B01D53/047 , C01B3/50 , C01B3/52 , C07C4/04 , C10G9/38 , C10G55/00 , F01K11/02 , F01K13/00 , F02C3/04 , C10G9/36
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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