# US 9,434,891 B2 · Apparatus for recovering oligomerate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,891 B2 - Document ID: US9434891B2 - Status: Granted - Kind: B2 - Application number: 14/074,681 - Filed: 2013-11-07 - Published: 2014-05-15 - Granted: 2016-09-06 - Earliest claimed: 2012-11-12 - Assignees: Uop LLC - Applicants: Uop LLC - Inventors: Christian D. Freet; Charles P. Luebke; Clayton C. Sadler - Web page: https://patentgrep.com/patent/US9434891B2 ## CPC - C10G 50/00: Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation - B01D 3/009: {in combination with chemical reactions} - B01D 3/143: {by two or more of a fractionation, separation or rectification step} - C10G 7/02: Stabilising gasoline by removing gases by fractioning - C10G 11/18: according to the "fluidised-bed" technique - C10L 1/06: for spark ignition - 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 - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS ## Abstract A process and apparatus that uses a debutanizer with a side stripper can recover a light stream, an intermediate stream and a liquid stream. One of the intermediate stream and the liquid stream can be recycled to oligomerization or to fluid catalytic cracking. ## Claims ### Claim 1 An apparatus for producing olefins comprising: an oligomerization zone for oligomerizing an oligomerization feed stream to produce an oligomerate stream; a fractionation column in communication with said oligomerization zone, said fractionation column providing a side stream from a side outlet; a side stripper column in communication with said side outlet of said fractionation column; said fractionation column in communication with an overhead line from said side stripper column. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein said oligomerization zone is in downstream communication with said side outlet. ### Claim 3 (depends on 1) The apparatus of claim 1 wherein said oligomerization zone is in downstream communication with a bottom line of said fractionation column. ### Claim 4 (depends on 1) The apparatus of claim 1 wherein an FCC zone is in downstream communication with a bottom line of said fractionation column. ### Claim 5 (depends on 1) The apparatus of claim 1 wherein a gasoline tank or a gasoline blending line is in communication with a bottom line of said fractionation column. ### Claim 6 (depends on 1) The apparatus of claim 1 wherein a distillate separator column is in communication with a bottom line of said fractionation column. ### Claim 7 (depends on 1) The apparatus of claim 1 wherein said feed inlet to said fractionation column is at a lower elevation than a feed inlet from said overhead line from said side stripper. ### Claim 8 (depends on 1) The apparatus of claim 1 wherein said feed inlet from said overhead line from said side stripper is at a higher elevation than said side outlet. ### Claim 9 An apparatus for producing olefins comprising: an oligomerization zone for oligomerizing an oligomerization feed stream to produce an oligomerate stream; a debutanizer column in communication with said oligomerization zone at a feed inlet, said debutanizing column providing a side stream from a side outlet; a side stripper column in communication with said side outlet of said fractionation column; said debutanizer column in communication with an overhead line from said side stripper column at a side inlet at an elevation above said side outlet. ### Claim 10 (depends on 9) The apparatus of claim 9 wherein said oligomerization zone is in downstream communication with said side outlet. ### Claim 11 (depends on 9) The apparatus of claim 9 wherein said oligomerization zone is in downstream communication with a bottom line of said debutanizer column. ### Claim 12 (depends on 9) The apparatus of claim 9 wherein an FCC zone is in downstream communication with a bottom line of said fractionation column. ### Claim 13 (depends on 9) The apparatus of claim 9 wherein a gasoline tank or a gasoline blending line is in communication with a bottom line of said fractionation column. ### Claim 14 (depends on 9) The apparatus of claim 9 wherein a distillate separator column is in communication with a bottom line of said fractionation column. ### Claim 15 (depends on 9) The apparatus of claim 9 wherein said feed inlet to said fractionation column is at a lower elevation than a feed inlet from said overhead line from said side stripper. ### Claim 16 An apparatus for producing olefins comprising: an oligomerization zone for oligomerizing an oligomerization feed stream to produce an oligomerate stream; a debutanizer column in communication with said oligomerization zone at a feed inlet, said debutanizer column providing a side stream from a side outlet; a side stripper column in communication with said side outlet of said fractionation column; said debutanizer column in communication with an overhead line from said side stripper column at a side inlet at an elevation above said side outlet. ### Claim 17 (depends on 16) The apparatus of claim 16 wherein said oligomerization zone is in downstream communication with said side outlet. ### Claim 18 (depends on 16) The apparatus of claim 16 wherein said oligomerization zone is in downstream communication with a bottom line of said debutanizer column. ### Claim 19 (depends on 16) The apparatus of claim 16 wherein an FCC zone is in downstream communication with a bottom line of said fractionation column. ### Claim 20 (depends on 16) The apparatus of claim 16 wherein a gasoline tank or a gasoline blending line is in communication with a bottom line of said fractionation column.