Patents by Inventor Sohel K. SHAIKH
Sohel K. SHAIKH 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: 20240124789Abstract: In accordance with one or more embodiments of the present disclosure, a multi-stage process for upgrading a mixed pyrolysis oil comprising polyaromatic compounds to benzene, toluene, ethylbenzene, and xylenes (BTEX) includes combining light pyrolysis oil with heavy pyrolysis oil to form the mixed pyrolysis oil; upgrading the mixed pyrolysis oil in a slurry-phase reactor zone to produce intermediate products, wherein the slurry-phase reactor zone comprises a mixed metal oxide catalyst; and hydrocracking the intermediate products in a fixed-bed reactor zone to produce the BTEX, wherein the fixed-bed reactor zone comprises a mesoporous zeolite-supported metal catalyst.Type: ApplicationFiled: October 12, 2022Publication date: April 18, 2024Applicants: Saudi Arabian Oil Company, SABIC Global Technologies B.V.Inventors: Miao Sun, Sohel K Shaikh, Wojciech Andrzej Supronowicz, Chandrasekar Subramani, Eman Z. Albaher
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Systems and processes integrating steam cracking with dual catalyst metathesis for producing olefins
Patent number: 11939540Abstract: Processes for producing olefins include integration of steam cracking with a dual catalyst metathesis process. The processes include steam cracking a hydrocarbon feed to form a cracking reaction effluent containing butenes, separating the cracking reaction effluent to produce a cracking C4 effluent including normal butenes, isobutene, and 1,3-butadiene, subjecting the cracking C4 effluent to selective hydrogenation to convert 1,3-butadiene in the cracking C4 effluent to normal butenes, removing isobutene from a hydrogenation effluent to produce a metathesis feed containing normal butenes, and contacting the metathesis feed with a metathesis catalyst and a cracking catalyst directly downstream of the metathesis catalyst to produce a metathesis reaction effluent.Type: GrantFiled: January 3, 2023Date of Patent: March 26, 2024Assignee: Saudi Arabian Oil CompanyInventors: Sohel K Shaikh, Raed H Abudawoud, Zhonglin Zhang, Munir D Khokhar, Furqan Aljumah -
Publication number: 20240010934Abstract: A method for upgrading mixed pyrolysis oil may include contacting the mixed pyrolysis oil with hydrogen in the presence of a mixed metal oxide catalyst at reaction conditions to produce a reaction effluent including light aromatic compounds. The mixed pyrolysis oil includes multi-ring aromatic compounds and is formed from light pyrolysis oil and heavy pyrolysis oil at a ratio of 10:90 to 40:60 with light pyrolysis oil representing a bottom stream of a gas steam cracker and heavy pyrolysis oil representing a bottom stream of a naphtha steam cracker. The mixed metal oxide catalyst includes a plurality of catalyst particles with each catalyst particles including a plurality of metal oxides. An associated system for upgrading mixed pyrolysis oil may include a pyrolysis upgrading unit housing the mixed metal oxide catalyst and a separation unit operable to separate used mixed metal oxide catalyst from the reaction effluent.Type: ApplicationFiled: July 6, 2023Publication date: January 11, 2024Applicants: Saudi Arabian Oil Company, SABIC Global Technologies B.V.Inventors: Miao Sun, Sohel K. Shaikh, Wojciech Andrzej Supronowicz, Chandrasekar Subramani, Eman Z. Albaher
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Patent number: 11746299Abstract: A method for upgrading mixed pyrolysis oil may include contacting the mixed pyrolysis oil with hydrogen in the presence of a mixed metal oxide catalyst at reaction conditions to produce a reaction effluent including light aromatic compounds. The mixed pyrolysis oil includes multi-ring aromatic compounds and is formed from light pyrolysis oil and heavy pyrolysis oil at a ratio of 10:90 to 40:60 with light pyrolysis oil representing a bottom stream of a gas steam cracker and heavy pyrolysis oil representing a bottom stream of a naphtha steam cracker. The mixed metal oxide catalyst includes a plurality of catalyst particles with each catalyst particles including a plurality of metal oxides. An associated system for upgrading mixed pyrolysis oil may include a pyrolysis upgrading unit housing the mixed metal oxide catalyst and a separation unit operable to separate used mixed metal oxide catalyst from the reaction effluent.Type: GrantFiled: July 11, 2022Date of Patent: September 5, 2023Assignees: Saudi Arabian Oil Company, SABIC Global Technology B.V.Inventors: Miao Sun, Sohel K Shaikh, Wojciech Andrzej Supronowicz, Chandrasekar Subramani, Eman Z Albaher
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Patent number: 11732202Abstract: A method for producing aromatic compounds from pyrolysis oil comprises: upgrading the pyrolysis oil to pyrolysis gasoline in a multi-stage reactor comprising a slurry-phase reactor and a fixed-bed reactor, wherein the slurry-phase reactor comprises a mixed metal oxide catalyst, and the fixed-bed reactor comprises a mesoporous zeolite-supported metal catalyst; aromatizing the pyrolysis gasoline in an aromatization unit; hydrodealkylating and transalkylating a product from the aromatization unit in a hydrodealkylation-transalkylation unit, thereby producing an aromatic stream; and processing the aromatic stream in an aromatics recovery complex to produce the aromatic compounds comprising benzene, toluene, and xylenes (BTX).Type: GrantFiled: March 24, 2022Date of Patent: August 22, 2023Assignee: Saudi Arabia Oil CompanyInventors: Miao Sun, Zhonglin Zhang, Noor Al-Mana, Hattan T. Janbi, Sohel K. Shaikh, Eman Z. Albaher, Noor A. Sulais
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Patent number: 11685870Abstract: A catalytic upgrading process includes introducing a feed comprising crude oil to a steam cracking unit, thereby producing pyrolysis fuel oil (PFO). The PFO is introduced to a first catalytic depolyaromatization reactor to remove polyaromatics from the feed, thereby producing polyaromatics adsorbed to the catalyst and depolyaromatized PFO. The depolyaromatized PFO is introduced to a hydrocracking unit. The resulting benzene-toluene-xylenes (BTX) and liquid petroleum gas (LPG) are separated, and the BTX is introduced to a BTX complex to produce refined BTX. The LPG can then be introduced to the steam cracking unit. After depolyaromatization, a wash solvent is introduced into the first catalytic depolyaromatization reactor to remove the polyaromatics, regenerate the catalyst, and produce a mixture comprising the wash solvent and the polyaromatics. The wash solvent is separated from the polyaromatics.Type: GrantFiled: March 1, 2022Date of Patent: June 27, 2023Assignee: Saudi Arabian Oil CompanyInventors: Miao Sun, Zhonglin Zhang, Sohel K. Shaikh, Omer Koseoglu
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Patent number: 11679378Abstract: Methods of producing an isomerization catalyst include preparing a catalyst precursor solution, hydrothermally treating the catalyst precursor solution to produce a magnesium oxide precipitant, calcining the magnesium oxide precipitant to produce an isomerization catalyst precursor, soaking the isomerization catalyst precursor in an acid solution comprising sulfuric acid to product a isomerization catalyst precursor precipitant, and calcining the isomerization catalyst precursor precipitant to produce the isomerization catalyst. The catalyst precursor solution includes at least a magnesium precursor, a hydrolyzing agent, and cetrimonium bromide. Methods of producing 1-butene from a 2-butene-containing feedstock with the isomerization catalyst are also disclosed.Type: GrantFiled: February 25, 2021Date of Patent: June 20, 2023Assignee: Saudi Arabian Oil CompanyInventors: Afnan Alghannam, Munir D. Khokhar, Sohel K. Shaikh
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SYSTEMS AND PROCESSES INTEGRATING STEAM CRACKING WITH DUAL CATALYST METATHESIS FOR PRODUCING OLEFINS
Publication number: 20230151284Abstract: Processes for producing olefins include integration of steam cracking with a dual catalyst metathesis process. The processes include steam cracking a hydrocarbon feed to form a cracking reaction effluent containing butenes, separating the cracking reaction effluent to produce a cracking C4 effluent including normal butenes, isobutene, and 1,3-butadiene, subjecting the cracking C4 effluent to selective hydrogenation to convert 1,3-butadiene in the cracking C4 effluent to normal butenes, removing isobutene from a hydrogenation effluent to produce a metathesis feed containing normal butenes, and contacting the metathesis feed with a metathesis catalyst and a cracking catalyst directly downstream of the metathesis catalyst to produce a metathesis reaction effluent.Type: ApplicationFiled: January 3, 2023Publication date: May 18, 2023Applicant: Saudi Arabian Oil CompanyInventors: Sohel K. Shaikh, Raed H. Abudawoud, Zhonglin Zhang, Munir D. Khokhar, Furqan Aljumah -
Publication number: 20230093135Abstract: A method for upgrading pyrolysis oil includes contacting a pyrolysis oil feed with hydrogen in the presence of a mixed metal oxide catalyst in a first slurry reactor, where: the pyrolysis oil feed comprises multi-ring aromatic compounds comprising greater than or equal to sixteen carbon atoms, and contacting the pyrolysis oil feed with hydrogen in the presence of the mixed metal oxide catalyst in the first slurry reactor to convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil feed to light aromatic compounds comprising di-aromatic compounds, tri-aromatic compounds, or both, passing an intermediate stream comprising the light aromatic compounds to a second slurry reactor downstream of the first slurry reactor; and contacting the intermediate stream with hydrogen in the presence of a mesoporous zeolite supported metal catalyst in a second slurry reactor.Type: ApplicationFiled: December 2, 2022Publication date: March 23, 2023Applicant: Saudi Arabian Oil CompanyInventors: Miao Sun, Sohel K Shaikh, Ibrahim A. Abba, Noor Al-Mana, Zhonglin Zhang
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Patent number: 11602735Abstract: In accordance with one or more embodiments of the present disclosure, a multi-stage process for upgrading pyrolysis oil comprising polyaromatic compounds to benzene, toluene, ethylbenzene, and xylenes (BTEX) includes upgrading the pyrolysis oil in a slurry-phase reactor zone to produce intermediate products, wherein the slurry-phase reactor zone comprises a mixed metal oxide catalyst; and hydrocracking the intermediate products in a fixed-bed reactor zone to produce the BTEX, wherein the fixed-bed reactor zone comprises a mesoporous zeolite-supported metal catalyst.Type: GrantFiled: November 5, 2021Date of Patent: March 14, 2023Assignee: Saudi Arabian Oil CompanyInventors: Miao Sun, Sohel K. Shaikh, Ibrahim A. Abba, Noor Al-Mana, Ke Zhang, Zhonglin Zhang
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Patent number: 11578276Abstract: A method for upgrading pyrolysis oil includes contacting a pyrolysis oil feed with hydrogen in the presence of a mixed metal oxide catalyst in a first slurry reactor, where: the pyrolysis oil feed comprises multi-ring aromatic compounds comprising greater than or equal to sixteen carbon atoms, and contacting the pyrolysis oil feed with hydrogen in the presence of the mixed metal oxide catalyst in the first slurry reactor to convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil feed to light aromatic compounds comprising di-aromatic compounds, tri-aromatic compounds, or both, passing an intermediate stream comprising the light aromatic compounds to a second slurry reactor downstream of the first slurry reactor; and contacting the intermediate stream with hydrogen in the presence of a mesoporous zeolite supported metal catalyst in a second slurry reactor.Type: GrantFiled: July 1, 2021Date of Patent: February 14, 2023Assignee: Saudi Arabian Oil CompanyInventors: Miao Sun, Sohel K Shaikh, Ibrahim A. Abba, Noor Al-Mana, Zhonglin Zhang
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Patent number: 11577227Abstract: In accordance with one or more embodiments of the present disclosure, a multi-stage process for upgrading pyrolysis oil comprising polyaromatic compounds to benzene, toluene, ethylbenzene, and xylenes (BTEX) includes upgrading the pyrolysis oil in a slurry-phase reactor zone to produce intermediate products, wherein the slurry-phase reactor zone comprises a mixed metal oxide catalyst; and hydrocracking the intermediate products in a fixed-bed reactor zone to produce the BTEX, wherein the fixed-bed reactor zone comprises a mesoporous zeolite-supported metal catalyst.Type: GrantFiled: November 5, 2021Date of Patent: February 14, 2023Assignee: Saudi Arabian Oil CompanyInventors: Miao Sun, Sohel K. Shaikh, Ibrahim A. Abba, Noor Al-Mana, Ke Zhang, Zhonglin Zhang
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Systems and processes integrating steam cracking with dual catalyst metathesis for producing olefins
Patent number: 11572516Abstract: Processes for producing olefins include integration of steam cracking with a dual catalyst metathesis process. The processes include steam cracking a hydrocarbon feed to form a cracking reaction effluent containing butenes, separating the cracking reaction effluent to produce a cracking C4 effluent including normal butenes, isobutene, and 1,3-butadiene, subjecting the cracking C4 effluent to selective hydrogenation to convert 1,3-butadiene in the cracking C4 effluent to normal butenes, removing isobutene from a hydrogenation effluent to produce a metathesis feed containing normal butenes, and contacting the metathesis feed with a metathesis catalyst and a cracking catalyst directly downstream of the metathesis catalyst to produce a metathesis reaction effluent.Type: GrantFiled: March 26, 2020Date of Patent: February 7, 2023Assignee: Saudi Arabian Oil CompanyInventors: Sohel K Shaikh, Raed H Abudawoud, Zhonglin Zhang, Munir D Khokhar, Furqan Aljumah -
Patent number: 11555156Abstract: A catalytic upgrading process includes introducing a feed comprising crude oil to a first catalytic deasphalting reactor to deasphalt the feed, thereby producing polymerized asphaltenes and deasphalted oil (DAO). The DAO is introduced to a steam cracking unit, thereby producing pyrolysis gas (PG), which is introduced into a selective hydrogenation unit, thereby producing an olefin-free product, which can then be introduced to a separation unit. The resulting benzene-toluene-xylenes (BTX)-containing stream and liquid petroleum gas (LPG) are separated, and the BTX-containing stream is introduced to a BTX complex to produce refined BTX. After deasphalting, a wash solvent may be introduced into the first catalytic deasphalting reactor to remove the polymerized asphaltenes, regenerate the catalyst, and produce a mixture comprising the wash solvent and the polymerized asphaltenes. The wash solvent is separated from the polymerized asphaltenes.Type: GrantFiled: March 1, 2022Date of Patent: January 17, 2023Assignee: Saudi Arabian Oil CompanyInventors: Miao Sun, Zhonglin Zhang, Sohel K. Shaikh, Omer Koseoglu
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Publication number: 20230002689Abstract: A method for upgrading pyrolysis oil includes contacting a pyrolysis oil feed with hydrogen in the presence of a mixed metal oxide catalyst in a first slurry reactor, where: the pyrolysis oil feed comprises multi-ring aromatic compounds comprising greater than or equal to sixteen carbon atoms, and contacting the pyrolysis oil feed with hydrogen in the presence of the mixed metal oxide catalyst in the first slurry reactor to convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil feed to light aromatic compounds comprising di-aromatic compounds, tri-aromatic compounds, or both, passing an intermediate stream comprising the light aromatic compounds to a second slurry reactor downstream of the first slurry reactor; and contacting the intermediate stream with hydrogen in the presence of a mesoporous zeolite supported metal catalyst in a second slurry reactor.Type: ApplicationFiled: July 1, 2021Publication date: January 5, 2023Applicant: Saudi Arabian Oil CompanyInventors: Miao Sun, Sohel K Shaikh, Ibrahim A. Abba, Noor Al-Mana, Zhonglin Zhang
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Patent number: 11517892Abstract: Methods of producing an isomerization catalyst include preparing a catalyst precursor solution, hydrothermally treating the catalyst precursor solution to produce a magnesium oxide precipitant, and calcining the magnesium oxide precipitant to produce the isomerization catalyst. The catalyst precursor solution includes at least a magnesium precursor, a hydrolyzing agent, and polyethylene glycol. Methods of producing propene from a butene-containing feedstock with the isomerization catalyst and a metathesis catalyst are also disclosed.Type: GrantFiled: December 3, 2019Date of Patent: December 6, 2022Assignee: Saudi Arabian Oil CompanyInventors: Afnan Alghannam, Sohel K. Shaikh, Munir D. Khokhar, Faisal H. Alshafei
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Patent number: 11453624Abstract: A method for producing para-xylene (PX) includes introducing a C8 aromatic-containing composition to a xylene rerun column to separate the C8 aromatic-containing composition into a xylene-containing effluent and a heavy effluent and passing the xylene-containing effluent to a PX processing loop that includes a PX recovery unit operable to separate a PX product from the xylene-containing effluent, a membrane isomerization unit operable to convert a portion of the MX, OX, or both from the xylene-containing effluent to PX, an EB dealkylation unit operable to dealkylate EB from the xylene-containing effluent to produce benzene, toluene, and other C7? compounds, and a membrane separation unit operable to produce a permeate that is PX-rich and a retentate that is PX-lean. The permeate is passed to the PX recovery unit for recovery of PX, which the retentate is bypassed around the PX recovery unit circulated through the xylene processing loop.Type: GrantFiled: August 13, 2020Date of Patent: September 27, 2022Assignee: Saudi Arabian Oil CompanyInventors: Zhonglin Zhang, Sohel K Shaikh, Veera Venkata R Tammana, Raed H. Abudawoud, Bruce Richard Beadle, Hisham Tawfiq Bassam, Rakan Sulaiman Bilaus
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Publication number: 20220275296Abstract: A catalytic upgrading process includes introducing a feed comprising crude oil to a first catalytic deasphalting reactor to deasphalt the feed, thereby producing polymerized asphaltenes and deasphalted oil (DAO). The DAO is introduced to a steam cracking unit, thereby producing pyrolysis gas (PG), which is introduced into a selective hydrogenation unit, thereby producing an olefin-free product, which can then be introduced to a separation unit. The resulting benzene-toluene-xylenes (BTX)-containing stream and liquid petroleum gas (LPG) are separated, and the BTX-containing stream is introduced to a BTX complex to produce refined BTX. After deasphalting, a wash solvent may be introduced into the first catalytic deasphalting reactor to remove the polymerized asphaltenes, regenerate the catalyst, and produce a mixture comprising the wash solvent and the polymerized asphaltenes. The wash solvent is separated from the polymerized asphaltenes.Type: ApplicationFiled: March 1, 2022Publication date: September 1, 2022Applicant: Saudi Arabian Oil CompanyInventors: Miao Sun, Zhonglin Zhang, Sohel K. Shaikh, Omer Koseoglu
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Publication number: 20220275297Abstract: A catalytic upgrading process includes introducing a feed comprising crude oil to a steam cracking unit, thereby producing pyrolysis fuel oil (PFO). The PFO is introduced to a first catalytic depolyaromatization reactor to remove polyaromatics from the feed, thereby producing polyaromatics adsorbed to the catalyst and depolyaromatized PFO. The depolyaromatized PFO is introduced to a hydrocracking unit. The resulting benzene-toluene-xylenes (BTX) and liquid petroleum gas (LPG) are separated, and the BTX is introduced to a BTX complex to produce refined BTX. The LPG can then be introduced to the steam cracking unit. After depolyaromatization, a wash solvent is introduced into the first catalytic depolyaromatization reactor to remove the polyaromatics, regenerate the catalyst, and produce a mixture comprising the wash solvent and the polyaromatics. The wash solvent is separated from the polyaromatics.Type: ApplicationFiled: March 1, 2022Publication date: September 1, 2022Applicant: Saudi Arabian Oil CompanyInventors: Miao Sun, Zhonglin Zhang, Sohel K. Shaikh, Omer Koseoglu
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Publication number: 20220266230Abstract: Methods of producing an isomerization catalyst include preparing a catalyst precursor solution, hydrothermally treating the catalyst precursor solution to produce a magnesium oxide precipitant, calcining the magnesium oxide precipitant to produce an isomerization catalyst precursor, soaking the isomerization catalyst precursor in an acid solution comprising sulfuric acid to product a isomerization catalyst precursor precipitant, and calcining the isomerization catalyst precursor precipitant to produce the isomerization catalyst. The catalyst precursor solution includes at least a magnesium precursor, a hydrolyzing agent, and cetrimonium bromide. Methods of producing 1-butene from a 2-butene-containing feedstock with the isomerization catalyst are also disclosed.Type: ApplicationFiled: February 25, 2021Publication date: August 25, 2022Applicant: Saudi Arabian Oil CompanyInventors: Afnan Alghannam, Munir D. Khokhar, Sohel K. Shaikh