-
1.发明授权公开(公告)号：US11939540B2
公开(公告)日：2024-03-26
申请号：US18092655
申请日：2023-01-03
IPC分类号： C10G69/06 , B01J19/18 , C07C1/22 , C07C4/04 , C07C4/06 , C07C5/05 , C07C6/04 , C07C41/06 , C10G51/02 , C10G51/06 , C10G65/10 , C10G65/12
CPC分类号： C10G69/06 , B01J19/1862 , C07C1/22 , C07C4/04 , C07C4/06 , C07C5/05 , C07C6/04 , C07C41/06 , C10G51/023 , C10G51/026 , C10G51/06 , C10G65/10 , C10G65/12 , B01J2219/0004 , C10G2300/1044 , C10G2400/20
摘要： 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. Contacting with the metathesis catalyst causes metathesis of normal butenes to produce ethylene, propene, and C5+ olefins, and contacting with the cracking catalyst causes C5+ olefins produced through metathesis to undergo cracking reactions to produce additional propene, ethylene, or both.
-
公开(公告)号：US11111192B2
公开(公告)日：2021-09-07
申请号：US16936904
申请日：2020-07-23
发明人： Zhonglin Zhang , Sohel K Shaikh , Veera Venkata R Tammana , Raed H. Abudawoud , Bruce Richard Beadle , Hisham Tawfiq Bassam , Rakan Sulaiman Bilaus
IPC分类号： B01J8/00 , C07C5/22 , C07C7/144 , C07C15/08 , C07C5/27 , B01J16/00 , B01J19/24 , C07C7/00 , C07C7/12 , C07C7/14
摘要： 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.
-
公开(公告)号：US20230093135A1
公开(公告)日：2023-03-23
申请号：US18073968
申请日：2022-12-02
发明人： Miao Sun , Sohel K Shaikh , Ibrahim A. Abba , Noor Al-Mana , Zhonglin Zhang
摘要： 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.
-
4.发明授权公开(公告)号：US11345864B1
公开(公告)日：2022-05-31
申请号：US17167489
申请日：2021-02-04
发明人： Miao Sun , Noor Al-Mana , Sohel K Shaikh , Zhonglin Zhang , Fahad A. Almalki
摘要： A system for upgrading pyrolysis oil may include a pyrolysis upgrading unit having a mixed metal oxide catalyst and a separation unit operable to separate used mixed metal oxide catalyst from a reaction effluent. A method for upgrading pyrolysis oil may include contacting the pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at reaction conditions to produce a reaction effluent. The pyrolysis oil may include multi-ring aromatic compounds. The mixed metal oxide catalyst may include a plurality of catalyst particles and each of the plurality of catalyst particles having a plurality of metal oxides. Contacting the pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at the reaction conditions may convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil to the light aromatic compounds.
-
公开(公告)号：US20210155857A1
公开(公告)日：2021-05-27
申请号：US17169014
申请日：2021-02-05
发明人： Miao Sun , Zhonglin Zhang , Sohel K Shaikh
摘要： A process for removing asphaltenes from an oil feed, the process comprising the steps of introducing the oil feed to a de-asphalting column, where the oil feed comprises a carbonaceous material and asphaltenes, where the de-asphalting column comprises a heteropolyacid, operating the de-asphalting column at a reaction temperature and a reaction pressure for a residence time such that the heteropolyacid is operable to catalyze an acid catalyzed polymerization reaction of the asphaltenes to produce polymerized asphaltenes, the polymerized asphaltenes precipitate from the carbonaceous material in the oil feed, and withdrawing a de-asphalted oil from the de-asphalting column, where the de-asphalted oil is in the absence of the heteropolyacids, where the de-asphalted oil has a lower concentration of sulfur, a lower concentration of nitrogen, and a lower concentration of metals as compared to the oil feed, where the process for removing asphaltenes is in the absence of added hydrogen gas.
-
公开(公告)号：US11578276B2
公开(公告)日：2023-02-14
申请号：US17365008
申请日：2021-07-01
发明人： Miao Sun , Sohel K Shaikh , Ibrahim A. Abba , Noor Al-Mana , Zhonglin Zhang
摘要： 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.
-
7.发明授权公开(公告)号：US11384297B1
公开(公告)日：2022-07-12
申请号：US17167489
申请日：2021-02-04
发明人： Miao Sun , Noor Al-Mana , Sohel K Shaikh , Zhonglin Zhang , Fahad A. Almalki
摘要： A system for upgrading pyrolysis oil may include a pyrolysis upgrading unit having a mixed metal oxide catalyst and a separation unit operable to separate used mixed metal oxide catalyst from a reaction effluent. A method for upgrading pyrolysis oil may include contacting the pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at reaction conditions to produce a reaction effluent. The pyrolysis oil may include multi-ring aromatic compounds. The mixed metal oxide catalyst may include a plurality of catalyst particles and each of the plurality of catalyst particles having a plurality of metal oxides. Contacting the pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at the reaction conditions may convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil to the light aromatic compounds.
-
公开(公告)号：US11254879B2
公开(公告)日：2022-02-22
申请号：US17169014
申请日：2021-02-05
发明人： Miao Sun , Zhonglin Zhang , Sohel K Shaikh
摘要： A process for removing asphaltenes from an oil feed, the process comprising the steps of introducing the oil feed to a de-asphalting column, where the oil feed comprises a carbonaceous material and asphaltenes, where the de-asphalting column comprises a heteropolyacid, operating the de-asphalting column at a reaction temperature and a reaction pressure for a residence time such that the heteropolyacid is operable to catalyze an acid catalyzed polymerization reaction of the asphaltenes to produce polymerized asphaltenes, the polymerized asphaltenes precipitate from the carbonaceous material in the oil feed, and withdrawing a de-asphalted oil from the de-asphalting column, where the de-asphalted oil is in the absence of the heteropolyacids, where the de-asphalted oil has a lower concentration of sulfur, a lower concentration of nitrogen, and a lower concentration of metals as compared to the oil feed, where the process for removing asphaltenes is in the absence of added hydrogen gas.
-
9.发明申请公开(公告)号：US20210301213A1
公开(公告)日：2021-09-30
申请号：US16830759
申请日：2020-03-26
摘要： 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. Contacting with the metathesis catalyst causes metathesis of normal butenes to produce ethylene, propene, and C5+ olefins, and contacting with the cracking catalyst causes C5+ olefins produced through metathesis to undergo cracking reactions to produce additional propene, ethylene, or both.
-
10.发明授权公开(公告)号：US12091619B2
公开(公告)日：2024-09-17
申请号：US18347923
申请日：2023-07-06
发明人： Miao Sun , Sohel K Shaikh , Wojciech Andrzej Supronowicz , Chandrasekar Subramani , Eman Z Albaher
CPC分类号： C10G47/04 , B01J19/24 , B01J23/002 , B01J23/83 , C10G69/06 , C10G2300/4006 , C10G2300/4012 , C10G2300/706 , C10G2400/30
摘要： 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.
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.015 秒)
