GB2304349A - Method and apparatus for removing ethylbenzene from mixed xylenes stream - Google Patents

Method and apparatus for removing ethylbenzene from mixed xylenes stream

Info

Publication number
GB2304349A
GB2304349A GB9700310A GB9700310A GB2304349A GB 2304349 A GB2304349 A GB 2304349A GB 9700310 A GB9700310 A GB 9700310A GB 9700310 A GB9700310 A GB 9700310A GB 2304349 A GB2304349 A GB 2304349A
Authority
GB
United Kingdom
Prior art keywords
ethylbenzene
xylene
mixed xylenes
feed stream
fed
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.)
Granted
Application number
GB9700310A
Other versions
GB9700310D0 (en
GB2304349B (en
Inventor
George R Winter
Zvi Merchav
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.)
Denim Engineering Inc
Original Assignee
Denim Engineering Inc
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
Priority claimed from US08/437,986 external-priority patent/US6342649B1/en
Application filed by Denim Engineering Inc filed Critical Denim Engineering Inc
Publication of GB9700310D0 publication Critical patent/GB9700310D0/en
Publication of GB2304349A publication Critical patent/GB2304349A/en
Application granted granted Critical
Publication of GB2304349B publication Critical patent/GB2304349B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/02—Monocyclic hydrocarbons
    • C07C15/067—C8H10 hydrocarbons
    • C07C15/08—Xylenes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/005—Processes comprising at least two steps in series
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2529/00—Catalysts comprising molecular sieves
    • C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
    • C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • C07C2529/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

A method and apparatus for optimizing the production of p-xylene from a feed stream of a mixture of xylene isomers and ethylbenzene is described. The feed stream (121) is first fed through a pretreatment reactor (120) which converts the ethylbenzene into benzene and light hydrocarbons which are removed from the feed stream. The resulting mixture of xylenes is fed into a isomerization unit (114) which enriches the p-xylene concentration in the mixture at the expense of the ortho and meta isomers. The resulting effluent (116) is fed into a separator (112), which separates out the p-xylene (113). The remainder is combined with additional mixed xylenes which are then fed back into the isomerization unit (114), thus providing a continuous process for removing ethylbenzene from the initial feed stream of ethylbenzene and mixed xylenes, and converting the mixed xylenes into p-xylene.
GB9700310A 1995-05-10 1996-05-08 Method and apparatus for removing ethylbenzene from mixed xylenes stream Expired - Fee Related GB2304349B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/437,986 US6342649B1 (en) 1995-05-10 1995-05-10 Method for removing ethylbenzene from a para-xylene feed stream
US62295196A 1996-05-06 1996-05-06
PCT/US1996/006433 WO1996035498A1 (en) 1995-05-10 1996-05-08 Method and apparatus for removing ethylbenzene from mixed xylenes stream

Publications (3)

Publication Number Publication Date
GB9700310D0 GB9700310D0 (en) 1997-02-26
GB2304349A true GB2304349A (en) 1997-03-19
GB2304349B GB2304349B (en) 1998-09-16

Family

ID=27031496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9700310A Expired - Fee Related GB2304349B (en) 1995-05-10 1996-05-08 Method and apparatus for removing ethylbenzene from mixed xylenes stream

Country Status (4)

Country Link
DE (1) DE19680458C2 (en)
GB (1) GB2304349B (en)
IL (1) IL118185A (en)
WO (1) WO1996035498A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA02008195A (en) 2000-02-22 2003-02-27 Exxonmobil Chem Patents Inc Process for producing para xylene.
US10843983B2 (en) * 2019-02-22 2020-11-24 Saudi Arabian Oil Company Methods and systems for producing para-xylene from C8-containing compositions

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838581A (en) * 1955-03-08 1958-06-10 Universal Oil Prod Co Preparation of para-dialkyl substituted aromatic compounds
GB1009555A (en) * 1962-12-18 1965-11-10 Air Prod & Chem Production of xylene
GB1258292A (en) * 1969-01-15 1971-12-30
US4101597A (en) * 1977-06-23 1978-07-18 Mobil Oil Corporation Recovery of p-xylene and benzene from eight carbon atom aromatic fractions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940830A (en) * 1988-09-26 1990-07-10 Uop Rejective separation of para-xylene from xylene isomers and ethylbenzene with zeolites
US5336840A (en) * 1991-02-20 1994-08-09 Uop Process for the separation of aromatic hydrocarbons with energy redistribution

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838581A (en) * 1955-03-08 1958-06-10 Universal Oil Prod Co Preparation of para-dialkyl substituted aromatic compounds
GB1009555A (en) * 1962-12-18 1965-11-10 Air Prod & Chem Production of xylene
GB1258292A (en) * 1969-01-15 1971-12-30
US4101597A (en) * 1977-06-23 1978-07-18 Mobil Oil Corporation Recovery of p-xylene and benzene from eight carbon atom aromatic fractions

Also Published As

Publication number Publication date
WO1996035498A1 (en) 1996-11-14
GB9700310D0 (en) 1997-02-26
IL118185A (en) 2002-12-01
GB2304349B (en) 1998-09-16
DE19680458C2 (en) 1999-06-24
IL118185A0 (en) 1996-09-12
DE19680458T1 (en) 1997-07-24

Similar Documents

Publication Publication Date Title
NZ228075A (en) Separating hydrocarbons using membranes; apparatus
RU98116220A (en) METHOD FOR CONVERSION OF ETHYLBENZENE
DE3879204D1 (en) ALKYLATION / TRANSALKYLATION PROCESS FOR THE SELECTIVE PRODUCTION OF MONOALKYLATED AROMATIC CARBON HYDROGEN.
TW357104B (en) Perfluorocompound separation and purification method and system
MY121583A (en) "c8 aromatics isomerization using catalyst containing modified silicoaluminophosphate molecular sieve"
MY123833A (en) Aromatics and /or heavies removal from a methane-based feed by condensation and stripping
GB2304349A (en) Method and apparatus for removing ethylbenzene from mixed xylenes stream
FR3104576B1 (en) Device and method for converting aromatic compounds by alkylation of benzene with ethanol
TW339332B (en) A para-xylene separation process comprizing pretreatment by selective hydrogenation and by activated clay
EA199900227A2 (en) Process for converting of aromatic hydrocarbons from accompanying gas
ZA937662B (en) Process for separating a feed stock of hydrogen methane and C3/C4 hydrocarbons
MY113844A (en) Process for the conversion of natural gas to hydrocarbons
AU1810999A (en) Dehydrocyclization process with downstream dimethylbutane removal
CA2043254A1 (en) Process for producing gasoline components
ES2103419T3 (en) PROCEDURE FOR REVALUATING A HYDROCARBON FEEDING MATERIAL.
GB9013565D0 (en) Process for producing gasoline components
AU586113B2 (en) Process for the isomerization of unbranched hydrocarbons
GR3025085T3 (en) Process for separating mixtures of aromatic C8 hydrocarbons
JPS579727A (en) Converting method of xylene containing ethylbenzene
DK0422727T3 (en) Process for recovering trimethylbenzene compounds from mixtures containing them
FR3104579B1 (en) Device and method for converting aromatic compounds by alkylation of benzene with ethylene
FR3104573B1 (en) Device and process for the conversion of aromatic compounds by alkylation of toluene with methanol
TW336219B (en) Improved process for ethylbenzene production
TH41453A (en) Process for synthesis And purification of olefins containing hydrogenated paraffin

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040508