-
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.
-
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.
-
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.
-
-
Search Results
3
records
(took 0.023 seconds)
