# US 9,518,230 B2 · Process for recovering hydroprocessed hydrocarbons with two strippers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,230 B2 - Document ID: US9518230B2 - Status: Granted - Kind: B2 - Application number: 13/213,310 - Filed: 2011-08-19 - Published: 2013-02-21 - Granted: 2016-12-13 - Earliest claimed: 2011-08-19 - Assignees: Uop LLC - Applicants: Richard K. Hoehn; David M. Bowman; Xin X. Zhu - Inventors: Richard K. Hoehn; David M. Bowman; Xin X. Zhu - Web page: https://patentgrep.com/patent/US9518230B2 ## CPC - C10G 7/00: Distillation of hydrocarbon oils - C10G 67/00: Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only - C10G 2400/02: Gasoline - C10G 2400/04: Diesel oil - C10G 2400/08: Jet fuel - C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES ## Abstract A process is disclosed for recovering hydroprocessing effluent from a hydroprocessing unit utilizing a hot stripper and a cold stripper. Only the hot hydroprocessing effluent is heated in a fired heater prior to product fractionation, resulting in substantial operating and capital savings. ## Claims ### Claim 1 A hydroprocessing process comprising: hydroprocessing a hydrocarbon feed in a hydroprocessing reactor to provide a hydroprocessing effluent stream; separating the hydroprocessing effluent stream into a relatively cold hydroprocessing effluent stream and a relatively hot hydroprocessing effluent stream, comprising separating said hydroprocessing effluent stream in a hot separator to provide a hot separator overhead stream comprising a portion of said cold hydroprocessing effluent stream and a hot separator bottoms stream and separating the hot separator bottoms stream in a hot flash drum to provide a hot flash overhead stream comprising a portion of said cold hydroprocessing effluent stream and a hot flash bottoms stream comprising the hot hydroprocessing effluent stream; stripping the relatively cold hydroprocessing effluent stream in a cold stripper to provide a cold stripped stream; stripping the relatively hot hydroprocessing effluent stream in a hot stripper to provide a hot stripped stream; and feeding the cold stripped stream and the hot stripped stream to a product fractionation column. ### Claim 2 (depends on 1) The hydroprocessing process of claim 1 further comprising fractionating the cold stripped stream and the hot stripped stream in the product fractionation column to provide product streams. ### Claim 3 (depends on 2) The hydroprocessing process of claim 2 further comprising heating said hot stripped stream in a fired heater, and bypassing the cold stripped stream around the fired heater. ### Claim 4 (depends on 2) The hydroprocessing process of claim 2 further comprising passing said cold stripped stream to the product fractionation column at a higher elevation than the hot stripped stream. ### Claim 5 (depends on 1) The hydroprocessing process of claim 1 further comprising separating the hot separator overhead stream in a cold separator to provide a cold separator overhead stream and a cold separator bottoms stream comprising a portion of said cold hydroprocessing effluent stream. ### Claim 6 (depends on 5) The hydroprocessing process of claim 5 further comprising separating said cold separator bottoms stream in a cold flash drum to provide a cold flash overhead stream and a cold flash bottoms stream, said cold flash bottoms stream comprising said cold hydroprocessing effluent stream. ### Claim 7 (depends on 1) The hydroprocessing process of claim 1 further comprising separating said hot flash overhead stream in a cold flash drum to provide a cold flash overhead stream and a cold flash bottoms stream, said cold flash bottoms stream comprising said cold hydroprocessing effluent stream. ### Claim 8 (depends on 1) The hydroprocessing process of claim 1 further comprising fractionating a cold stripper overhead stream from said cold stripper and a hot stripper overhead stream from said hot stripper in a debutanizer column. ### Claim 9 (depends on 1) The hydroprocessing process of claim 1 further comprising taking said cold stripped stream from a bottom of said cold stripper; feeding an entirety of said cold stripped stream to said product fractionation column and taking said hot stripped stream from a bottom of said hot stripper. ### Claim 10 A hydroprocessing process comprising: hydroprocessing a hydrocarbon feed in a hydroprocessing reactor to provide a hydroprocessing effluent stream; separating the hydroprocessing effluent stream into a cold hydroprocessing effluent stream and a hot hydroprocessing effluent stream, comprising separating said hydroprocessing effluent stream in a hot separator to provide a hot separator overhead stream comprising a portion of said cold hydroprocessing effluent stream and a hot separator bottoms stream and separating the hot separator bottoms stream in a hot flash drum to provide a hot flash overhead stream comprising a portion of said cold hydroprocessing effluent stream and a hot flash bottoms stream comprising the hot hydroprocessing effluent stream; stripping the cold hydroprocessing effluent stream in a cold stripper to provide a cold stripped stream; stripping the hot hydroprocessing effluent stream in a hot stripper to provide a hot stripped stream; heating the hot stripped stream in a fired heater, and bypassing the cold stripped stream around the fired heater; and fractionating the cold stripped stream and the hot stripped stream in a product fractionation column to provide product streams. ### Claim 11 (depends on 10) The hydroprocessing process of claim 10 further comprising separating the hot separator overhead stream in a cold separator to provide a cold separator overhead stream and a cold separator bottoms stream comprising a portion of said cold hydroprocessing effluent stream. ### Claim 12 (depends on 11) The hydroprocessing process of claim 11 further comprising separating said cold separator bottoms stream in a cold flash drum to provide a cold flash overhead stream and a cold flash bottoms stream, said cold flash bottoms stream comprising said cold hydroprocessing effluent stream. ### Claim 13 (depends on 11) The hydroprocessing process of claim 11 further comprising separating said hot flash overhead stream in a cold flash drum to provide a cold flash overhead stream and a cold flash bottoms stream, said cold flash bottoms stream comprising said cold hydroprocessing effluent stream. ### Claim 14 A hydroprocessing process comprising: hydroprocessing a hydrocarbon feed in a hydroprocessing reactor to provide a hydroprocessing effluent stream; separating said hydroprocessing effluent stream in a hot separator to provide a hot separator bottoms stream and a hot separator overhead stream comprising a portion of a relatively cold hydroprocessing effluent stream and separating the hot separator bottoms stream in a hot flash drum to provide a hot flash overhead stream comprising a portion of said relatively cold hydroprocessing effluent stream and a hot flash bottoms stream comprising a relatively hot hydroprocessing effluent stream; stripping said relatively cold hydroprocessing effluent stream which is a portion of said hydroprocessing effluent stream in a cold stripper to provide a cold stripped stream; stripping said relatively hot hydroprocessing effluent stream which is a portion of said hydroprocessing effluent stream in a hot stripper to provide a hot stripped stream; and fractionating the cold stripped stream in a product fractionation column to provide product streams.