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公开(公告)号：US11053445B2
公开(公告)日：2021-07-06
申请号：US15954249
申请日：2018-04-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , Bharath Krishnamoorthi
Abstract: The present disclosure relates to a heat transfer tube including an inner surface and an outer surface. The heat transfer tube further includes a first mixing element and a second mixing element disposed on the inner surface of the tube and projecting inwardly toward a central longitudinal axis of the tube. Adjacent mixing elements are separated by a gap arc distance of about 0.5 inches (1.27 cm) or greater. The first helical row has an angle (Θ) from about 15 degrees to about 85 degrees relative to the central longitudinal axis of the tube. The tube has an inner diameter of about 1.85 inches (4.7 cm) or less.
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公开(公告)号：US20200239783A1
公开(公告)日：2020-07-30
申请号：US16846140
申请日：2020-04-10
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , Changmin Chun
IPC: C10G9/20 , C22C38/50 , C22C38/48 , C22C38/40 , C22C38/04 , C22C38/02 , C22C19/03 , F28F21/08 , F28F1/40 , F16L9/02 , C23C30/00 , C23C28/00 , C22C19/05 , B01J19/24 , C22C38/44 , B23K10/02 , C10G9/36 , C22C30/00 , C21D9/50 , B23K9/04 , C10G9/16 , C10G9/14
Abstract: The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing element comprises an aluminum-containing alloy. The mixing element's aluminum-containing alloy can be the same as or different from the tubular member's aluminum-containing alloy. Other aspects of the invention relate to pyrolysis furnaces which include such weldments, and the use of such pyrolysis furnaces for hydrocarbon conversion processes such as steam cracking.
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公开(公告)号：US20190284483A1
公开(公告)日：2019-09-19
申请号：US16430130
申请日：2019-06-03
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , Changmin Chun
IPC: C10G9/20 , C10G9/16 , C22C30/00 , C10G9/14 , B23K10/02 , C22C38/44 , B23K9/04 , C21D9/50 , C10G9/36 , C22C38/50 , C22C38/48 , C22C38/40 , C22C38/04 , C22C38/02 , C22C19/03 , F28F21/08 , F28F1/40 , F16L9/02 , C23C30/00 , C23C28/00 , C22C19/05 , B01J19/24
Abstract: The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing element comprises an aluminum-containing alloy. The mixing element's aluminum-containing alloy can be the same as or different from the tubular member's aluminum-containing alloy. Other aspects of the invention relate to pyrolysis furnaces which include such weldments, and the use of such pyrolysis furnaces for hydrocarbon conversion processes such as steam cracking.
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公开(公告)号：US10315968B2
公开(公告)日：2019-06-11
申请号：US15817812
申请日：2017-11-20
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Gary F. Janda , David B. Spicer
Abstract: A steam cracking process for converting hydrocarbons into smaller hydrocarbons, particularly olefins, in a tube reactor comprising a convection section, a cross-over section, and a radiant section. The process includes heating the fluid mixture inside the tube to a temperature at the end of the convection section where significant cracking occurs in the cross-over section. The high convection section and cross-over section temperatures allow for lower tube wall temperature in the radiant section resulting in less coke deposition on the inner wall of the tube, and hence extended run-lengths between adjacent decoking sessions.
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公开(公告)号：US20180170832A1
公开(公告)日：2018-06-21
申请号：US15817812
申请日：2017-11-20
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Gary F. Janda , David B. Spicer
IPC: C07C4/04
Abstract: A steam cracking process for converting hydrocarbons into smaller hydrocarbons, particularly olefins, in a tube reactor comprising a convection section, a cross-over section, and a radiant section. The process includes heating the fluid mixture inside the tube to a temperature at the end of the convection section where significant cracking occurs in the cross-over section. The high convection section and cross-over section temperatures allow for lower tube wall temperature in the radiant section resulting in less coke deposition on the inner wall of the tube, and hence extended run-lengths between adjacent decoking sessions.
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Patent Agency Ranking
公开(公告)号：US20160168480A1
公开(公告)日：2016-06-16
申请号：US14942730
申请日：2015-11-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , ChangMin Chun
CPC classification number: C10G9/203 , B01F2005/0636 , B01J19/2405 , B23K9/048 , B23K10/027 , B23K2101/06 , B23K2101/20 , B23K2103/04 , B23K2103/05 , C10G9/14 , C10G9/16 , C10G9/36 , C21D9/50 , C21D2211/004 , C22C19/03 , C22C19/05 , C22C30/00 , C22C38/02 , C22C38/04 , C22C38/40 , C22C38/44 , C22C38/48 , C22C38/50 , C23C28/345 , C23C30/00 , F16L9/02 , F28F1/40 , F28F21/08
Abstract: The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing element comprises an aluminum-containing alloy. The mixing element's aluminum-containing alloy can be the same as or different from the tubular member's aluminum-containing alloy. Other aspects of the invention relate to pyrolysis furnaces which include such weldments, and the use of such pyrolysis furnaces for hydrocarbon conversion processes such as steam cracking.
Abstract translation: 本发明涉及用作热解炉中传热管的焊件。 本发明涉及可用于热解炉的管。 焊件包括管状构件和至少一个混合元件。 管状构件包括含铝合金。 混合元件包括含铝合金。 混合元件的含铝合金可以与管状构件的含铝合金相同或不同。 本发明的其它方面涉及包括这种焊件的热解炉，以及这种热解炉用于烃转化过程如蒸汽裂解的用途。
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7.发明申请公开(公告)号：US20160168479A1
公开(公告)日：2016-06-16
申请号：US14821528
申请日：2015-08-07
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , Subramanian Annamalai , William A. Aslaner
CPC classification number: C10G9/16 , C10G9/20 , C10G9/36 , C10G2300/802 , C10G2300/807
Abstract: The invention relates a process for removing coke formed during steam-cracking of a hydrocarbon feed. The process includes providing a decoking feed to at least one radiant coil of a steam-cracking furnace under conditions to remove at least a portion of coke from the at least one radiant coil to form a decoking effluent. The decoking effluent is cooled with a liquid quench medium to provide an partially-quenched decoking effluent. The partially-quenched decoking effluent is cooled with a gaseous quench medium to provide a quenched effluent. An apparatus configured to perform such a process is also described.
Abstract translation: 本发明涉及一种在烃进料的蒸汽裂解过程中形成的去除焦炭的方法。 该方法包括在蒸汽裂化炉的至少一个辐射线圈提供去焦进料的条件下从至少一个辐射线圈除去至少一部分焦炭以形成除焦流出物。 用液体骤冷介质冷却除焦流出物，以提供部分骤冷的脱焦流出物。 将部分淬火的脱焦流出物用气体骤冷介质冷却以提供骤冷的流出物。 还描述了被配置为执行这种处理的装置。
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公开(公告)号：US10655072B2
公开(公告)日：2020-05-19
申请号：US16430130
申请日：2019-06-03
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , Changmin Chun
IPC: C10G9/20 , C10G9/14 , C10G9/16 , B23K9/04 , C21D9/50 , C22C30/00 , C10G9/36 , B23K10/02 , C22C38/44 , B01J19/24 , C22C19/05 , C23C28/00 , C23C30/00 , F16L9/02 , F28F1/40 , F28F21/08 , C22C19/03 , C22C38/02 , C22C38/04 , C22C38/40 , C22C38/48 , C22C38/50 , B01F5/06 , B23K101/06 , B23K101/20 , B23K103/04
Abstract: The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing element comprises an aluminum-containing alloy. The mixing element's aluminum-containing alloy can be the same as or different from the tubular member's aluminum-containing alloy. Other aspects of the invention relate to pyrolysis furnaces which include such weldments, and the use of such pyrolysis furnaces for hydrocarbon conversion processes such as steam cracking.
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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
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.
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公开(公告)号：US10336945B2
公开(公告)日：2019-07-02
申请号：US14821451
申请日：2015-08-07
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： David B. Spicer , Subramanian Annamalai , James M. Frye
Abstract: A process for the decoking of a hydrocarbon steam cracking furnace having a firebox, radiant coils, a transfer line exchanger, and an oil quench connection wherein liquid quench oil is injected to directly cool the steam-cracked effluent. Decoking feed comprising steam and air is supplied to the furnace under conditions sufficient to at least partially combust coke accumulated on the interior of the radiant coils, the transfer line exchanger, and the quench connection. Quench steam is supplied and injected into the decoking process effluent in an amount sufficient to cool the decoking process effluent below the metallurgical temperature limit of downstream piping. Also, a pyrolysis furnace for the production of ethylene is also provided.
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