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公开(公告)号：US20180291288A1
公开(公告)日：2018-10-11
申请号：US15933422
申请日：2018-03-23
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. BROWN , Brian A. CUNNINGHAM , Randolph J. SMILEY , Samia ILIAS , Brenda A. RAICH , Tien V. LE
Abstract: Systems and methods are provided for improving the processing of heavy or challenged feeds in a refinery based on integrated use of deasphalting, coking, and hydroprocessing. An optional fluid catalytic cracking unit can be included in the integrated system to allow for further improvements. The improved processing can be facilitated based on a process configuration where the vacuum resid fractions and/or other difficult fractions are deasphalted to generate a deasphalted oil and a deasphalter residue or rock fraction. The deasphalted oil can be passed into a hydroprocessing unit for further processing. The rock fraction can be used as the feed to a coking unit. Although deasphalter residue or rock is typically a feed with a high content of micro carbon residue, a high lift deasphalting process can allow a portion of the micro carbon residue in the initial feed to remain with the deasphalted oil. The portion of micro carbon residue that remains in the deasphalted oil can then be upgraded during hydroprocessing and/or during subsequent processing of the feed. By reducing the amount of micro carbon residue passed into a coker for a given initial feed source, the overall capacity for a reaction system to handle heavy feeds can be increased relative to the rate of coke production from the reaction system.
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Patent Agency Ranking
公开(公告)号：US20220275293A1
公开(公告)日：2022-09-01
申请号：US17639820
申请日：2020-08-14
Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventor： Eric B. SHEN , Anjaneya S. KOVVALI , Aruna RAMKRISHNAN , Samuel J. CADY , Stephen H. BROWN , Rustom M. BILLIMORIA , Brenda A. RAICH , Bryan A. PATEL , Phillip K. SCHOCH , John DELLA MORA , Arun K. SHARMA
Abstract: Systems and methods are provided for partial upgrading of heavy hydrocarbon feeds to meet transport specifications, such as pipeline transport specifications. The systems and methods can allow for one or more types of improvement in heavy hydrocarbon processing prior to transport. In some aspects, the systems and methods can produce a partially upgraded heavy hydrocarbon product that satisfies one or more transport specifications while incorporating an increased amount of vacuum gas oil and a reduced amount of pitch into the partially upgraded heavy hydrocarbon product. In other aspects, the systems and methods can allow for increased incorporation of hydrocarbons into the fraction upgraded for transport, thereby reducing or minimizing the amount of hydrocarbons requiring an alternative method of disposal or transport. In still other aspects, the systems and methods can allow for reduced incorporation of external streams into the final product for transport while still satisfying one or more target properties.
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公开(公告)号：US20220333026A1
公开(公告)日：2022-10-20
申请号：US17639871
申请日：2020-08-14
Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventor： Stephen H. BROWN , Brenda A. RAICH , Samuel J. CADY , Anjaneya S. KOVVALI , Eric B. SHEN , Scott R. HORTON , Ashish B. MHADESHWAR , Aruna RAMKRISHNAN
Abstract: An upgraded crude composition is provided, along with systems and methods for making such a composition. The upgraded crude composition can include an unexpectedly high percentage of vacuum gas oil boiling range components while having a reduce or minimized amount of components boiling above 593° C. (1100° F.). In some aspects, based in part on the hydroprocessing used to form the upgraded crude composition, the composition can include unexpectedly high contents of nitrogen. Still other unexpected features of the composition can include, but are not limited to, an unexpectedly high nitrogen content in the naphtha fraction; and an unexpected vacuum gas oil fraction including an unexpectedly high content of polynuclear aromatics, an unexpectedly high content of waxy, paraffinic compounds, and/or an unexpectedly high content of n-pentane asphaltenes.
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公开(公告)号：US20220333024A1
公开(公告)日：2022-10-20
申请号：US17639840
申请日：2020-08-14
Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventor： Eric B. SHEN , Anjaneya S. KOVVALI , Aruna RAMKRISHNAN , Arun K. SHARMA , Samuel J. CADY , Stephen H. BROWN , Rustom M. BILLIMORIA , Brenda A. RAICH , Bryan A. PATEL , Phillip K. SCHOCH , John DELLA MORA
Abstract: Systems and methods are provided for partial upgrading of heavy hydrocarbon feeds to meet transport specifications, such as pipeline transport specifications. The systems and methods can allow for one or more types of improvement in heavy hydrocarbon processing prior to transport. In some aspects, the systems and methods can produce a partially upgraded heavy hydrocarbon product that satisfies one or more transport specifications while incorporating an increased amount of vacuum gas oil and a reduced amount of pitch into the partially upgraded heavy hydrocarbon product. In other aspects, the systems and methods can allow for increased incorporation of hydrocarbons into the fraction upgraded for transport, thereby reducing or minimizing the amount of hydrocarbons requiring an alternative method of disposal or transport. In still other aspects, the systems and methods can allow for reduced incorporation of external streams into the final product for transport while still satisfying one or more target properties.
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公开(公告)号：US20180291291A1
公开(公告)日：2018-10-11
申请号：US15928436
申请日：2018-03-22
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. BROWN , Brian A. CUNNINGHAM , Randolph J. SMILEY , Samia ILIAS , Brenda A. RAICH , Tien V. LE
Abstract: Systems and methods are provided for upgrading a mixture of catalytic slurry oil and coker bottoms by hydroprocessing. Optionally, the upgrading can further include deasphalting the mixture of catalytic slurry oil and coker bottoms to form a deasphalted oil and a deasphalter residue or rock fraction. The mixture of catalytic slurry oil and coker bottoms and/or the deasphalted oil can then be hydroprocessed to form an upgraded effluent that includes fuels boiling range products. Optionally, in some aspects where the feed mixture is deasphalted prior to hydroprocessing, the feed mixture can further include a portion of a (sour) vacuum resid.
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公开(公告)号：US20180291287A1
公开(公告)日：2018-10-11
申请号：US15937987
申请日：2018-03-28
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. BROWN , Brian A. CUNNINGHAM , Randolph J. SMILEY , Samia ILIAS , Brenda A. RAICH , Tien V. LE
Abstract: Systems and methods are provided for improving operation of a fluid catalytic cracker as part of an integrated processing environment including a deasphalting unit and a hydroprocessor. Optionally, a coker can be included in the integrated system to allow for further improvements. The improved processing can be facilitated based on a process configuration where a combination of deasphalting and hydroprocessing are used to perform conversion on more refractory compounds, so that the fluid catalytic cracker can be operated at lower severity conditions. This can allow for improved production of desirable olefins and reduced production of light paraffins and coke. Additionally or alternately, the processing configuration can allow the bottoms fraction from fluid catalytic cracking to be incorporated into a higher value use than the typical regular sulfur fuel oil disposition.
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