Patents by Inventor Shifang Luo
Shifang Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240166960Abstract: A method for producing renewable arctic diesel is provided herein. The method includes contacting a bio-derived feedstock with a hydrotreatment catalyst under effective hydrotreatment conditions to produce a hydrotreated feedstock and separating the hydrotreated feedstock into gas phase products and liquid phase products. The liquid phase products include an oxygen content of less than 0.4 wt % but greater than 10 ppm. The method also includes contacting the liquid phase products with a ZSM-48-based isomerization/dewaxing catalyst under effective isomerization/dewaxing conditions to produce an isomerized product stream including a change in cloud point (?CP) of 50 degrees ° C. or more. The method further includes separating the isomerized product stream into gas phase products and liquid phase products, as well as fractionating the liquid phase products to produce renewable naphtha and renewable arctic diesel with a cloud point of ?20° C. or less and a yield of 80 wt % or more.Type: ApplicationFiled: February 9, 2021Publication date: May 23, 2024Inventors: Samuel J. CADY, Xiaochun XU, Shifang LUO, Michael H. RING, Joseph E. GATT
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Patent number: 11981870Abstract: Systems and methods are provided for processing a bio-derived feedstock in a commercial scale reactor to form renewable distillate boiling range fractions while managing the heat release. The management of the heat release is achieved in part by introducing 1.0 vol % or more of CO into at least a portion of the reaction environment for hydroprocessing of the bio-derived feedstock. The 1.0 vol % or more of CO can selectively reduce the activity of hydrotreating catalyst for olefin saturation.Type: GrantFiled: November 2, 2021Date of Patent: May 14, 2024Assignee: ExxonMobile Technology and Engineering CompanyInventors: Xiaochun Xu, Shifang Luo, Samuel J. Cady, Michael H. Ring
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Patent number: 11597885Abstract: Methods of refining a whole crude oil stream. The methods involve first processing the crude either through a hydrotreating reactor comprising a dewaxing reactor bed or a flash evaporation separator. The treated streams are then further processed through a demetalization reactor bed, a hydroprocessing reactor bed, or both. The stream can then be still further processed via additional hydrotreating, distillation, or both.Type: GrantFiled: July 1, 2021Date of Patent: March 7, 2023Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANYInventors: Xiaochun Xu, Xinrui Yu, Shifang Luo, Randolph J. Smiley, Joseph E. Gatt
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Patent number: 11566189Abstract: This disclosure relates to new processes to produce high paraffinic diesel from crude oil, such as tight oil from the Permian basin. This disclosure also relates to high paraffinic diesel compositions and high paraffinic diesel blends.Type: GrantFiled: May 20, 2021Date of Patent: January 31, 2023Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANYInventors: Xinrui Yu, Shifang Luo, Xiaochun Xu, Randolph J. Smiley
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Patent number: 11566188Abstract: Method of refining whole crude oil or a wide cut crude oil, the methods comprising a combination of a hydrotreating reactor, a distillation tower, and an optional flash evaporation separator. The methods can also include light ends processing, fluid catalytic cracking, reforming, hydrocracking, and demetalization. In some methods a whole crude oil is first processed through a flash evaporation separator to create a wide cut crude oil and in other methods, the flash evaporation separator is not used as the whole crude oil is first treated in a hydrotreater.Type: GrantFiled: May 20, 2021Date of Patent: January 31, 2023Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANYInventors: Xiaochun Xu, Xinrui Yu, Shifang Luo, Randolph J. Smiley, Hyung S. Woo
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Patent number: 11485922Abstract: Kerosene boiling range or jet fuel boiling range compositions are provided that are formed from crude oils with unexpected combinations of high naphthenes to aromatics weight and/or volume ratio and a low sulfur content. The resulting kerosene boiling range fractions can have an unexpected combination of a high naphthenes to aromatics weight ratio, a low but substantial aromatics content, and a low sulfur content. Such fractions can potentially be used as fuel after a reduced or minimized amount of additional refinery processing. By reducing, minimizing, or avoiding the amount of refinery processing needed to meet fuel and/or fuel blending product specifications, the fractions derived from the high naphthenes to aromatics ratio and low sulfur crudes can provide fuels and/or fuel blending products having a reduced or minimized carbon intensity.Type: GrantFiled: May 20, 2021Date of Patent: November 1, 2022Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANYInventors: Daniel E. Kadlecek, Randolph J. Smiley, Gregory K. Lilik, Mike T. Noorman, Shifang Luo, Ian J. Laurenzi, Poturovic Jasmina
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Patent number: 11485920Abstract: Hydroprocessed residual fuel and/or fuel blending components are provided that have a sulfur and nitrogen level comparable to liquefied natural gas (LNG). Because of the low starting level of sulfur and/or nitrogen, the severity of the hydroprocessing that is needed for the crude oil or bottoms fraction in order to remove sulfur to a level that is comparable to LNG is reduced or minimized. This can allow the resulting marine residual fuels to have low carbon intensity, low SOx and NOx emission and high energy density. Since the hydroprocessed fractions correspond to a fuel oil product, the resulting marine fuel can be used in existing fleets, and can be distributed in existing bunkering systems.Type: GrantFiled: May 20, 2021Date of Patent: November 1, 2022Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANYInventors: Kenneth C. H. Kar, Sheryl B. Rubin-Pitel, Shifang Luo, Randolph J. Smiley, Lisa M. Guay
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Patent number: 11441089Abstract: Distillate boiling range and/or diesel boiling range compositions are provided that are formed from crude oils with unexpected combinations of high naphthenes to aromatics weight and/or volume ratio and a low sulfur content. This unexpected combination of properties is characteristic of crude oils that can be fractionated to form distillate/diesel boiling range compositions that can be used as fuels/fuel blending products with reduced or minimized processing. The resulting distillate boiling range fractions and/or diesel boiling range fractions can have an unexpected combination of a high naphthenes to aromatics weight and/or volume ratio, a low but substantial aromatics content, and a low sulfur content.Type: GrantFiled: May 20, 2021Date of Patent: September 13, 2022Assignee: ExxonMobil Technology and Engineering CompanyInventors: Sheryl B. Rubin-Pitel, Timothy J. Anderson, Kenneth C. H. Kar, Marcia E. Dierolf, Shifang Luo, Ian J. Laurenzi, Xinrui Yu, Yi Xu
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Patent number: 11396633Abstract: Marine diesel fuel/fuel blending component compositions and fuel oil/fuel blending component compositions are provided that are derived from crude oils having high naphthenes to aromatics volume and/or weight ratios and a low sulfur content. In addition to having a high naphthenes to aromatics ratio, a low sulfur content, and a low but substantial content of aromatics, such fuels and/or fuel blending components can have a reduced or minimized carbon intensity relative to fuels derived from conventional sources. The unexpected ratio of naphthenes to aromatics contributes to the fuels and/or fuel blending components further having additional unexpected properties, including low density, low kinematic viscosity, and/or high energy density.Type: GrantFiled: May 20, 2021Date of Patent: July 26, 2022Assignee: ExxonMobil Technology and Engineering CompanyInventors: Kenneth C. H. Kar, Sheryl B. Rubin-Pitel, Lisa M. Guay, Timothy J. Anderson, Shifang Luo, Marcia E. Dierolf
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Patent number: 11390820Abstract: Naphtha boiling range compositions are provided that are formed from crude oils with unexpected combinations of high naphthenes to aromatics weight and/or volume ratio and a low sulfur content. The resulting naphtha boiling range fractions can have a high naphthenes to aromatics weight ratio, a low but substantial content of aromatics, and a low sulfur content. In some aspects, the fractions can be used as fuels and/or fuel blending products after fractionation with minimal further refinery processing. In other aspects, the amount of additional refinery processing, such as hydrotreatment, catalytic reforming and/or isomerization, can be reduced or minimized. By reducing, minimizing, or avoiding the amount of hydroprocessing needed to meet fuel and/or fuel blending product specifications, the fractions derived from the high naphthenes to aromatics ratio and low sulfur crudes can provide fuels and/or fuel blending products having a reduced or minimized carbon intensity.Type: GrantFiled: May 20, 2021Date of Patent: July 19, 2022Assignee: ExxonMobil Technology and Engineering CompanyInventors: Matthew H. Lindner, Scott K. Berkhous, Mike T. Noorman, Gregory K. Lilik, Shifang Luo, Ian J. Laurenzi, Jasmina Poturovic
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Publication number: 20220145189Abstract: Systems and methods are provided for processing a bio-derived feedstock in a commercial scale reactor to form renewable distillate boiling range fractions while managing the heat release. The management of the heat release is achieved in part by introducing 1.0 vol % or more of CO into at least a portion of the reaction environment for hydroprocessing of the bio-derived feedstock. The 1.0 vol % or more of CO can selectively reduce the activity of hydrotreating catalyst for olefin saturation.Type: ApplicationFiled: November 2, 2021Publication date: May 12, 2022Inventors: Xiaochun Xu, Shifang Luo, Samuel J. Cady, Michael H. Ring
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Patent number: 11299684Abstract: Marine diesel fuel/fuel blending component compositions and fuel oil/fuel blending component compositions are provided that are derived from crude oils having high naphthenes to aromatics volume and/or weight ratios and a low sulfur content. In addition to having a high naphthenes to aromatics ratio, a low sulfur content, and a low but substantial content of aromatics, such fuels and/or fuel blending components can have a reduced or minimized carbon intensity relative to fuels derived from conventional sources. The unexpected ratio of naphthenes to aromatics contributes to the fuels and/or fuel blending components further having additional unexpected properties, including low density, low kinematic viscosity, and/or high energy density.Type: GrantFiled: December 18, 2020Date of Patent: April 12, 2022Assignee: ExxonMobil Research and Engineering CompanyInventors: Kenneth C. H. Kar, Sheryl B. Rubin-Pitel, Lisa M. Guay, Timothy J. Anderson, Shifang Luo, Marcia E. Dierolf
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Publication number: 20220025282Abstract: Methods of refining a whole crude oil stream. The methods involve first processing the crude either through a hydrotreating reactor comprising a dewaxing reactor bed or a flash evaporation separator. The treated streams are then further processed through a demetalization reactor bed, a hydroprocessing reactor bed, or both. The stream can then be still further processed via additional hydrotreating, distillation, or both.Type: ApplicationFiled: July 1, 2021Publication date: January 27, 2022Inventors: Xiaochun Xu, Xinrui Yu, Shifang Luo, Randolph J. Smiley, Joseph E. Gatt
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Patent number: 11225611Abstract: Disclose is an online analyzer to monitor conversion of a biofeedstock in a first hydrotreating stage to avoid catalyst poisoning in a subsequent stage. An example method of processing a biofeedstock may comprise hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock. The method may further comprise monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer.Type: GrantFiled: July 8, 2020Date of Patent: January 18, 2022Assignee: ExxonMobil Research and Engineering CompanyInventors: Chengrong Wang, Anding Zhang, Xiaochun Xu, Samuel J. Cady, Shifang Luo, Michael H. Ring, Maria Vanessa C. Aguinaldo, John Della Mora, Kegun L. Ream
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Publication number: 20220010219Abstract: Disclose is an online analyzer to monitor conversion of a biofeedstock in a first hydrotreating stage to avoid catalyst poisoning in a subsequent stage. An example method of processing a biofeedstock may comprise hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock. The method may further comprise monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer.Type: ApplicationFiled: July 8, 2020Publication date: January 13, 2022Inventors: Chengrong Wang, Anding Zhang, Xiaochun Xu, Samuel J. Cady, Shifang Luo, Michael H. Ring, Maria Vanessa C. Aguinaldo, John Della Mora, Kegun L. Ream
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Publication number: 20210363439Abstract: Method of refining whole crude oil or a wide cut crude oil, the methods comprising a combination of a hydrotreating reactor, a distillation tower, and an optional flash evaporation separator. The methods can also include light ends processing, fluid catalytic cracking, reforming, hydrocracking, and demetalization. In some methods a whole crude oil is first processed through a flash evaporation separator to create a wide cut crude oil and in other methods, the flash evaporation separator is not used as the whole crude oil is first treated in a hydrotreater.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Xiaochun Xu, Xinrui Yu, Shifang Luo, Randolph J. Smiley, Hyung S. Woo
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Publication number: 20210363450Abstract: Naphtha boiling range compositions are provided that are formed from crude oils with unexpected combinations of high naphthenes to aromatics weight and/or volume ratio and a low sulfur content. The resulting naphtha boiling range fractions can have a high naphthenes to aromatics weight ratio, a low but substantial content of aromatics, and a low sulfur content. In some aspects, the fractions can be used as fuels and/or fuel blending products after fractionation with minimal further refinery processing. In other aspects, the amount of additional refinery processing, such as hydrotreatment, catalytic reforming and/or isomerization, can be reduced or minimized. By reducing, minimizing, or avoiding the amount of hydroprocessing needed to meet fuel and/or fuel blending product specifications, the fractions derived from the high naphthenes to aromatics ratio and low sulfur crudes can provide fuels and/or fuel blending products having a reduced or minimized carbon intensity.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Matthew H. Lindner, Scott K. Berkhous, Mike T. Noorman, Gregory K. Lilik, Shifang Luo, Ian J. Laurenzi, Jasmina Poturovic
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Publication number: 20210363440Abstract: This disclosure relates to new processes to produce high paraffinic diesel from crude oil, such as tight oil from the Permian basin. This disclosure also relates to high paraffinic diesel compositions and high paraffinic diesel blends.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Xinrui Yu, Shifang Luo, Xiaochun Xu, Randolph J. Smiley
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Publication number: 20210363444Abstract: Hydroprocessed residual fuel and/or fuel blending components are provided that have a sulfur and nitrogen level comparable to liquefied natural gas (LNG). Because of the low starting level of sulfur and/or nitrogen, the severity of the hydroprocessing that is needed for the crude oil or bottoms fraction in order to remove sulfur to a level that is comparable to LNG is reduced or minimized. This can allow the resulting marine residual fuels to have low carbon intensity, low SOx and NOx emission and high energy density. Since the hydroprocessed fractions correspond to a fuel oil product, the resulting marine fuel can be used in existing fleets, and can be distributed in existing bunkering systems.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Kenneth C.H. Kar, Sheryl B. Rubin-Pitel, Shifang Luo, Randolph J. Smiley, Lisa M. Guay
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Publication number: 20210363449Abstract: Distillate boiling range and/or diesel boiling range compositions are provided that are formed from crude oils with unexpected combinations of high naphthenes to aromatics weight and/or volume ratio and a low sulfur content. This unexpected combination of properties is characteristic of crude oils that can be fractionated to form distillate/diesel boiling range compositions that can be used as fuels/fuel blending products with reduced or minimized processing. The resulting distillate boiling range fractions and/or diesel boiling range fractions can have an unexpected combination of a high naphthenes to aromatics weight and/or volume ratio, a low but substantial aromatics content, and a low sulfur content.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Sheryl B. Rubin-Pitel, Timothy J. Anderson, Kenneth C.H. Kar, Marcia E. Dierolf, Shifang Luo, Ian J. Laurenzi, Xinrui Yu, Yi Xu