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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：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
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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