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    Burner, furnace, and steam cracking processes using the same
    5.
    发明授权
    Burner, furnace, and steam cracking processes using the same 有权

    公开(公告)号：US10597586B2

    公开(公告)日：2020-03-24

    申请号：US15378462

    申请日：2016-12-14

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： George Stephens ,  David B. Spicer

    IPC: C10G9/20 ,  F23C9/00 ,  F23M5/02 ,  F23D14/08 ,  F23D14/70 ,  F23C5/00 ,  C10G9/36

    Abstract: A burner sub-system, a furnace comprising the same, a fuel combustion process and steam cracking process carried out in the furnace. The burner sub-system comprises a barrier wall segment between the burner tip and the flue-gas recirculation (“FGR”) duct, effectively blocking direct gas flow between the burner tip and the FGR duct opening, but without encircling the whole burner tip. The presence of the partial barrier wall has the advantage of preventing the temperature inside the FGR duct from becoming too high, while achieving low NOx emissions from the combustion process without overheating the burner tip because of reduced amount of heat reflection to the burner tip compared to an annular barrier wall. The invention is particularly useful in furnaces where hydrogen-rich fuel gas is combusted.

    High Pressure Ethane Cracking with Small Diameter Furnace Tubes
    6.
    发明申请
    High Pressure Ethane Cracking with Small Diameter Furnace Tubes 有权

    公开(公告)号：US20220081623A1

    公开(公告)日：2022-03-17

    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

    IPC: C10G9/20 ,  C10G9/36

    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.

    Burner, Furnace, and Steam Cracking Processes Using the Same
    7.
    发明申请
    Burner, Furnace, and Steam Cracking Processes Using the Same 审中-公开

    公开(公告)号：US20170283713A1

    公开(公告)日：2017-10-05

    申请号：US15378462

    申请日：2016-12-14

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： George Stephens ,  David B. Spicer

    IPC: C10G9/20

    Abstract: A burner sub-system, a furnace comprising the same, a fuel combustion process and steam cracking process carried out in the furnace. The burner sub-system comprises a barrier wall segment between the burner tip and the flue-gas recirculation (“FGR”) duct, effectively blocking direct gas flow between the burner tip and the FGR duct opening, but without encircling the whole burner tip. The presence of the partial barrier wall has the advantage of preventing the temperature inside the FGR duct from becoming too high, while achieving low NOx emissions from the combustion process without overheating the burner tip because of reduced amount of heat reflection to the burner tip compared to an annular barrier wall. The invention is particularly useful in furnaces where hydrogen-rich fuel gas is combusted.

    Furnace Systems and Methods for Cracking Hydrocarbons
    10.
    发明申请
    Furnace Systems and Methods for Cracking Hydrocarbons 有权

    公开(公告)号：US20220259504A1

    公开(公告)日：2022-08-18

    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

    IPC: C10G9/16 ,  C10G9/36 ,  C10G9/20 ,  B04C5/185 ,  B01D45/16

    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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