EP1015529A4 - Procede ameliore d'obtention de rendements importants d'olefine a partir de charges d'alimentation residuelles - Google Patents

Procede ameliore d'obtention de rendements importants d'olefine a partir de charges d'alimentation residuelles

Info

Publication number
EP1015529A4
EP1015529A4 EP97931426A EP97931426A EP1015529A4 EP 1015529 A4 EP1015529 A4 EP 1015529A4 EP 97931426 A EP97931426 A EP 97931426A EP 97931426 A EP97931426 A EP 97931426A EP 1015529 A4 EP1015529 A4 EP 1015529A4
Authority
EP
European Patent Office
Prior art keywords
solids
reaction zone
zone
feedstock
contact time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97931426A
Other languages
German (de)
English (en)
Other versions
EP1015529A1 (fr
Inventor
Willibald Serrand
Mitchell Jacobson
Paul K Ladwig
John F Pagel
Michael R Parrish
Noel Seimandi
Hans A Weisenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Technology and Engineering Co
Original Assignee
ExxonMobil Research and Engineering Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ExxonMobil Research and Engineering Co filed Critical ExxonMobil Research and Engineering Co
Publication of EP1015529A1 publication Critical patent/EP1015529A1/fr
Publication of EP1015529A4 publication Critical patent/EP1015529A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/20—C2-C4 olefins

Definitions

  • Residual feedstocks which are suitable for use in the present invention are those petroleum fractions boiling above about 480°C, preferably above about 540°C, more preferably above about 560°C.
  • Non-limiting examples of such fractions include vacuum resids, atmospheric resids, heavy and reduced petroleum crude oil; pitch; asphalt; bitumen; tar sand oil; shale oil; coal; coal slurries; and coal liquefaction bottoms. It is understood that such residual feedstocks may also contain minor amounts of lower boiling material.
  • feedstocks typically cannot be used as feeds to steam crackers to produce olefinic products because they excessively coke.
  • Such feeds will typically have a Conradson carbon content of at least 5 wt.%, generally from about 5 to 50 wt.%. As to Conradson carbon residue, see ASTM Test D 189- 165.
  • Olefinic products are produced from the residual feedstocks in accordance with the present invention in a short vapor contact time process unit which is comprised of a heating zone, a short vapor contact time horizontal fluidized bed reaction zone and a stripping zone.
  • a short vapor contact time process unit which is comprised of a heating zone, a short vapor contact time horizontal fluidized bed reaction zone and a stripping zone.
  • a residual feedstock is fed via line 10 to one or more short vapor contact time reaction zones 1 which contains a horizontal moving bed of fluidized hot solids.
  • the solids in the short vapor contact time reactor be fluidized with assistance by a mechanical means.
  • the particles are fluidized by use of a fluidizing gas, such as steam, a mechanical means, and by the vapors which result in the vaporization of a fraction of the feedstock.
  • the mechanical means be a mechanical mixing system characterized as having a relatively high mixing efficiency with only minor amounts of axial backmixing. Such a mixing system acts like a plug flow system with a flow pattern which ensures that the residence time is nearly equal for all particles.
  • the most preferred mechanical mixer is the mixer referred to by Lurgi AG of Germany as the LR-Mixer or LR-Flash Coker which was originally designed for processing oil shale, coal, and tar sands.
  • the LR-Mixer consists of two horizontally oriented rotating screws which aid in fluidizing the particles.
  • the solid particles be coke particles, they may also be any other suitable refractory particulate material.
  • Non-limiting examples of such other suitable refractory materials include those selected from the group consisting of silica, alumina, zirconia, magnesia, mullite, synthetically prepared or naturally occurring material such as pumice, clay, kieselguhr, diatomaceous earth, bauxite, and the like. It is within the scope of the present invention that the solids can be inert or have catalytic properties. The solids will have an average particle size of about 40 microns to 2,000 microns, preferably from about 50 microns to about 800 microns.
  • the olefin portion of the product stream obtained by the practice of the present invention will typically be comprised of about 5 to 15 wt.%, preferably about 7 to 10 wt.% methane; about 10 to 20 wt.%, preferably about 12 to 18 wt.% ethylene; and about 5 to 15 wt.%, preferably 7 to 12 wt.% propylene, based on the feed.
  • the vaporized fraction is passed via line 11 to cyclone 20 where most of the entrained solids, or dust, is removed.
  • the dedusted vapors are then passed to quench zone 13 via line 24 where the vapors are reduced to temperatures below which substantial thermal cracking occurs. This temperature will preferably be below about 450°C, more preferably below about 340°C.
  • Solids, having carbonaceous material deposited thereon are passed from reaction zones 1 via lines 15 to the bed of solids 17 in stripper 3. The solids pass downwardly through the stripper and past a stripping zone at the bottom section where any remaining volatiles, or vaporizable material, are stripped from the solids with use of a stripping gas, preferably steam, introduced into the stripping zone via line 16.
  • a stripping gas preferably steam
  • Stripped vapor products pass upwardly in stripper vessel 3, through line 22 to cyclone 20 to quench zone 13 via line 24 where a light product, containing a substantial amount of olefins, is removed overhead via line 28.
  • the light product will typically be a 510°C minus product stream.
  • This 510° C minus product stream will typically contain about 7 to 10 wt.% methane, 12 to 18 wt.% ethylene, and 7 to 12 wt.% propylene, and 6 to 9 wt.% unsaturated C 4 's, such as butanes and butadienes, based on the total weight of the feed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un procédé d'obtention de quantités importantes de produits oléfiniques à partir de charges d'alimentation résiduelles. Ledit procédé consiste à mettre en contact les charges avec des matières solides fluidisées très chaudes dans une unité de traitement thermique à courte durée de contact avec la vapeur. L'unité comprend un lit mobile horizontal de particules fluidisées très chaudes.
EP97931426A 1997-06-25 1997-06-25 Procede ameliore d'obtention de rendements importants d'olefine a partir de charges d'alimentation residuelles Withdrawn EP1015529A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1997/011108 WO1998059018A1 (fr) 1997-06-25 1997-06-25 Procede ameliore d'obtention de rendements importants d'olefine a partir de charges d'alimentation residuelles

Publications (2)

Publication Number Publication Date
EP1015529A1 EP1015529A1 (fr) 2000-07-05
EP1015529A4 true EP1015529A4 (fr) 2002-08-14

Family

ID=22261158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931426A Withdrawn EP1015529A4 (fr) 1997-06-25 1997-06-25 Procede ameliore d'obtention de rendements importants d'olefine a partir de charges d'alimentation residuelles

Country Status (5)

Country Link
EP (1) EP1015529A4 (fr)
JP (1) JP2002505704A (fr)
AU (1) AU3505797A (fr)
CA (1) CA2291189A1 (fr)
WO (1) WO1998059018A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020038778A1 (en) * 2000-05-01 2002-04-04 Maa Peter S. Process for upgrading residua

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172857A (en) * 1978-04-03 1979-10-30 Arthur G. Mckee & Company Process and apparatus for ethylene production
US4411769A (en) * 1982-03-23 1983-10-25 Exxon Research & Engineering Co. Integrated two stage coking and steam cracking process and apparatus therefor
US4975181A (en) * 1984-12-10 1990-12-04 Utah Tsao Process and apparatus for ethylene production
WO1997004043A1 (fr) * 1995-07-17 1997-02-06 Exxon Research And Engineering Company Enrichissement integre de residuum et craquage catalytique fluide
WO1997031083A1 (fr) * 1996-02-22 1997-08-28 Exxon Chemical Patents Inc. Procede pour obtenir des olefines a partir de charges d'alimentation residuelles et autres charges d'alimentation lourdes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768127A (en) * 1951-05-17 1956-10-23 Exxon Research Engineering Co Improved residual oil conversion process for the production of chemicals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172857A (en) * 1978-04-03 1979-10-30 Arthur G. Mckee & Company Process and apparatus for ethylene production
US4411769A (en) * 1982-03-23 1983-10-25 Exxon Research & Engineering Co. Integrated two stage coking and steam cracking process and apparatus therefor
US4975181A (en) * 1984-12-10 1990-12-04 Utah Tsao Process and apparatus for ethylene production
WO1997004043A1 (fr) * 1995-07-17 1997-02-06 Exxon Research And Engineering Company Enrichissement integre de residuum et craquage catalytique fluide
WO1997031083A1 (fr) * 1996-02-22 1997-08-28 Exxon Chemical Patents Inc. Procede pour obtenir des olefines a partir de charges d'alimentation residuelles et autres charges d'alimentation lourdes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9859018A1 *

Also Published As

Publication number Publication date
AU3505797A (en) 1999-01-04
JP2002505704A (ja) 2002-02-19
EP1015529A1 (fr) 2000-07-05
WO1998059018A1 (fr) 1998-12-30
CA2291189A1 (fr) 1998-12-30

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Inventor name: SEIMANDI, NOEL

Inventor name: PARRISH, MICHAEL, R.

Inventor name: PAGEL, JOHN, F.

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Inventor name: JACOBSON, MITCHELL

Inventor name: SERRAND, WILLIBALD

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