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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
CPC分类号： C10G9/206 , C10G9/203 , C10G9/36 , C10G2300/1037 , C10G2300/4006 , C10G2300/4012 , C10G2300/4031 , C10G2300/807 , C10G2400/20
摘要： 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
摘要： 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：US20200048561A1
公开(公告)日：2020-02-13
申请号：US16519162
申请日：2019-07-23
摘要： Systems and methods are provided for performing a partial trip for an ethane steam cracker while reducing or minimizing ethane consumption in a ground flare system during the partial trip. In particular, a trip system is provided that reduces the firing on an ethylene furnace (such as a reduction into a range of 10% to 40% of normal firing) while also providing a reduced flow of feed to the furnace with dilution steam at a steam to hydrocarbon ratio similar to a ratio that is suitable during normal operation. The trip system can be actuated, for example, when the loss of circulating quench water to the water quench tower is detected.
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公开(公告)号：US11028327B2
公开(公告)日：2021-06-08
申请号：US16519162
申请日：2019-07-23
摘要： Systems and methods are provided for performing a partial trip for an ethane steam cracker while reducing or minimizing ethane consumption in a ground flare system during the partial trip. In particular, a trip system is provided that reduces the firing on an ethylene furnace (such as a reduction into a range of 10% to 40% of normal firing) while also providing a reduced flow of feed to the furnace with dilution steam at a steam to hydrocarbon ratio similar to a ratio that is suitable during normal operation. The trip system can be actuated, for example, when the loss of circulating quench water to the water quench tower is detected.
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5.发明申请Treatment of Off-Gas in the Production of Para-Xylene by the Methylation of Toluene and/or Benzene 审中-公开通过甲苯和/或苯的甲基化处理对二甲苯生产中的废气公开(公告)号：US20160060187A1
公开(公告)日：2016-03-03
申请号：US14801144
申请日：2015-07-16
CPC分类号： C07C2/864 , C07C7/11 , C07C7/12 , C07C7/14 , C07C2529/40 , C07C2529/65 , C07C2529/70 , C07C15/08 , C07C11/04 , C07C11/06
摘要： A process for removing contaminants from an off-gas stream generated by the methylation of toluene and/or benzene by methanol to produce para-xylene. The treated off-gas stream, which contains C4− hydrocarbons, may be further processed in an olefins plant/process to yield valuable light alkanes and olefins.
摘要翻译： 通过由甲醇甲苯化甲苯和/或苯产生对脱二甲苯产生的废气流中的污染物的去除方法。 含有C4-烃的经处理的废气流可以在烯烃装置/方法中进一步加工，以产生有价值的轻质烷烃和烯烃。
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公开(公告)号：US10899970B2
公开(公告)日：2021-01-26
申请号：US16321056
申请日：2017-08-15
摘要： The invention relates to the compression of a pyrolysis product to facilitate light olefin separation. The pyrolysis product is produced in a pyrolysis reaction. A power generator produces a first shaft power and a second shaft power. The pyrolysis product is compressed using at least part of the first shaft power and at least part of the second shaft power.
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公开(公告)号：US20190169510A1
公开(公告)日：2019-06-06
申请号：US16321056
申请日：2017-08-15
摘要： The invention relates to the compression of a pyrolysis product to facilitate light olefin separation. The pyrolysis product is produced in a pyrolysis reaction. A power generator produces a first shaft power and a second shaft power. The pyrolysis product is compressed using at least part of the first shaft power and at least part of the second shaft power.
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