-
1.发明申请公开(公告)号：US20200299141A1
公开(公告)日：2020-09-24
申请号：US16751945
申请日：2020-01-24
Applicant: ExxonMobil Research and Engineering Company
Inventor： Yi Du , Bradley D. Wooler , Stuart E. Smith , Brenda A. Raich , Clarence Chase , Lesheng Wang
IPC: C01B32/354 , C01B32/33
Abstract: Sulfur-crosslinked olefins, particularly sulfur-crosslinked heavy hydrocarbon products having one or more sulfur-crosslinked olefin moieties, may undergo pyrolysis to form sulfur-doped porous carbon having high BET surface area values. Pyrolysis to form the sulfur-doped porous carbon may be particularly efficacious in the presence of a hydroxide base. BET surface areas up to 2000 m2/g or even higher may be obtained. Such sulfur-doped porous carbon may be prepared by combining a heavy hydrocarbon product with sulfur, heating to a first temperature state to form a liquefied reaction mixture containing a sulfur-crosslinked heavy hydrocarbon, homogeneously mixing a hydroxide base with the liquefied reaction mixture, and pyrolyzing the sulfur-crosslinked heavy hydrocarbon to form sulfur-doped porous carbon.
-
公开(公告)号：US10400177B2
公开(公告)日：2019-09-03
申请号：US15812396
申请日：2017-11-14
Applicant: ExxonMobil Research and Engineering Company
Inventor： Tien V. Le , Brenda A. Raich , Bing Du , Mohsen N. Harandi , Suriyanarayanan Rajagopalan
Abstract: Systems and methods are provided for integrating a fluidized coking process, optionally a coke gasification process, and processes for production of additional liquid products from the coking and/or gasification process. In some aspects, the integrated processes can allow for conversion of olefins generated during a fluidized coking process to form additional liquid products. Additionally or alternately, in some aspects the integrated processes can allow for separation of syngas from the flue gas/fuel gas generated by a gasifier integrated with a fluidized coking process. This syngas can then be used to form methanol, which can then be converted in a methanol conversion process to form heavier products. In such aspects, olefins generated during the fluidized coking process can be added to the methanol conversion process to improve the yield. Additionally, in various aspects, the off-gas from the integrated conversion process can be used as an additional paraffin feed that can be recycled to one of the heat integration conduits in the fluidized coker for additional generation of olefins. This can provide a further increase in liquid yields using a carbon source (C4− paraffins) that is conventionally viewed as a low value product from coking.
-
公开(公告)号：US20210024846A1
公开(公告)日：2021-01-28
申请号：US17066573
申请日：2020-10-09
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. Brown , Brenda A. Raich , Beatrice M. Gooding , Stephen M. Davis , Federico Barrai , Warren B. Ames , Keith K. Aldous
Abstract: Methods are provided for processing deasphalted gas oils derived from thermally cracked resid fractions to form Group I, Group II, and/or Group III lubricant base oils. The yield of lubricant base oils (optionally also referred to as base stocks) can be increased by thermally cracking a resid fraction at an intermediate level of single pass severity relative to conventional methods. By performing thermal cracking to a partial level of conversion, compounds within a resid fraction that are beneficial for increasing both the viscosity and the viscosity index of a lubricant base oil can be retained, thus allowing for an improved yield of higher viscosity lubricant base oils from a thermally cracked resid fraction.
-
公开(公告)号：US20200181509A1
公开(公告)日：2020-06-11
申请号：US16707667
申请日：2019-12-09
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. Brown , Samia Ilias , Randolph J. Smiley , Richard Demmin , Shifang Luo , Brenda A. Raich , Aldrin G. Cuevas , Keith Wilson , Jesse R. McManus , Lei Zhang
Abstract: A method of upgrading refining streams with high polynucleararomatic hydrocarbon (PNA) concentrations can include: hydrocracking a PNA feed in the presence of a catalyst and hydrogen at 380° C. to 430° C., 2500 psig or greater, and 0.1 hr−1 to 5 hr−1 liquid hourly space velocity (LSHV), wherein the weight ratio of PNA feed to hydrogen is 30:1 to 10:1, wherein the PNA feed comprises 25 wt % or less of hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 50 wt % or greater to form a product comprising 50 wt % or greater of the hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 20 wt % or less.
-
公开(公告)号：US11292977B2
公开(公告)日：2022-04-05
申请号：US17066573
申请日：2020-10-09
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. Brown , Brenda A. Raich , Beatrice M. Gooding , Stephen M. Davis , Federico Barrai , Warren B. Ames , Keith K. Aldous
Abstract: Methods are provided for processing deasphalted gas oils derived from thermally cracked resid fractions to form Group I, Group II, and/or Group III lubricant base oils. The yield of lubricant base oils (optionally also referred to as base stocks) can be increased by thermally cracking a resid fraction at an intermediate level of single pass severity relative to conventional methods. By performing thermal cracking to a partial level of conversion, compounds within a resid fraction that are beneficial for increasing both the viscosity and the viscosity index of a lubricant base oil can be retained, thus allowing for an improved yield of higher viscosity lubricant base oils from a thermally cracked resid fraction.
-
Patent Agency Ranking
公开(公告)号：US20190352572A1
公开(公告)日：2019-11-21
申请号：US15981063
申请日：2018-05-16
Applicant: ExxonMobil Research and Engineering Company
Inventor： Tien V. Le , Walter E. Dubois , Brenda A. Raich , Bing Du , Sumathy Raman , Gawain J. Lau
Abstract: Systems and methods are provided for adding a heated stream of light hydrocarbons to a fluidized coking environment to improve liquid product yield and/or reduce coke production. The light hydrocarbons can correspond to C1-C10 hydrocarbons and/or hydrogen. The light hydrocarbons can be heated so that the light hydrocarbons are exposed to an activation temperature of 535° C. to 950° C. and/or an activation temperature higher than the temperature in the coking zone by 50° C. or more for an activation time prior to entering the fluidized coking reactor and/or the coking zone in the fluidized coking environment.
-
公开(公告)号：US20190352571A1
公开(公告)日：2019-11-21
申请号：US15980979
申请日：2018-05-16
Applicant: ExxonMobil Research and Engineering Company
Inventor： Tien Le , Brenda A. Raich , Bing Du , Walter E. DuBois
Abstract: Systems and methods are provided for integrating a fluidized coking process with a catalyst-enhanced coke gasification process. The catalyst for the gasification process can correspond to calcium oxide, a thermally decomposable calcium salt, a potassium salt such as potassium carbonate, or a combination thereof. Examples of suitable calcium salts can include, but are not limited to, calcium hydroxide, calcium nitrate, and calcium carbonate. The calcium oxide, potassium salts, and/or thermally decomposable calcium salts can be introduced into the integrated system, for example, as part of the feed into the coker. It has been unexpectedly discovered that using catalytic gasification as part of an integrated fluidized coking and gasification process can result in an overhead gas stream from the gasifier with increased energy content and/or overhead gas pressure.
-
公开(公告)号：US10752846B2
公开(公告)日：2020-08-25
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.
-
公开(公告)号：US20190144756A1
公开(公告)日：2019-05-16
申请号：US15812396
申请日：2017-11-14
Applicant: ExxonMobil Research and Engineering Company
Inventor： Tien V. Le , Brenda A. Raich , Bing Du , Mohsen N. Harandi , Suriyanarayanan Rajagopalan
CPC classification number: C10B55/10 , C07C2/06 , C07C4/04 , C07C29/1518 , C10B49/22 , C10G9/005 , C10G9/32 , C10G50/00 , C10G57/02 , C10J3/48 , C10J3/84 , C10J2300/0903 , C10J2300/0943 , C10J2300/0959 , C10J2300/0976 , C10J2300/1659 , C10J2300/1678 , C07C31/04
Abstract: Systems and methods are provided for integrating a fluidized coking process, optionally a coke gasification process, and processes for production of additional liquid products from the coking and/or gasification process. In some aspects, the integrated processes can allow for conversion of olefins generated during a fluidized coking process to form additional liquid products. Additionally or alternately, in some aspects the integrated processes can allow for separation of syngas from the flue gas/fuel gas generated by a gasifier integrated with a fluidized coking process. This syngas can then be used to form methanol, which can then be converted in a methanol conversion process to form heavier products. In such aspects, olefins generated during the fluidized coking process can be added to the methanol conversion process to improve the yield. Additionally, in various aspects, the off-gas from the integrated conversion process can be used as an additional paraffin feed that can be recycled to one of the heat integration conduits in the fluidized coker for additional generation of olefins. This can provide a further increase in liquid yields using a carbon source (C4− paraffins) that is conventionally viewed as a low value product from coking.
-
公开(公告)号：US11118120B2
公开(公告)日：2021-09-14
申请号：US16707667
申请日：2019-12-09
Applicant: ExxonMobil Research and Engineering Company
Inventor： Stephen H. Brown , Samia Ilias , Randolph J. Smiley , Richard Demmin , Shifang Luo , Brenda A. Raich , Aldrin G. Cuevas , Keith Wilson , Jesse R. McManus , Lei Zhang
Abstract: A method of upgrading refining streams with high polynucleararomatic hydrocarbon (PNA) concentrations can include: hydrocracking a PNA feed in the presence of a catalyst and hydrogen at 380° C. to 430° C., 2500 psig or greater, and 0.1 hr−1 to 5 hr−1 liquid hourly space velocity (LSHV), wherein the weight ratio of PNA feed to hydrogen is 30:1 to 10:1, wherein the PNA feed comprises 25 wt % or less of hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 50 wt % or greater to form a product comprising 50 wt % or greater of the hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 20 wt % or less.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.028 seconds)
