GB1420796A - Separation of aromatic isomers - Google Patents

Separation of aromatic isomers

Info

Publication number
GB1420796A
GB1420796A GB5361273A GB5361273A GB1420796A GB 1420796 A GB1420796 A GB 1420796A GB 5361273 A GB5361273 A GB 5361273A GB 5361273 A GB5361273 A GB 5361273A GB 1420796 A GB1420796 A GB 1420796A
Authority
GB
United Kingdom
Prior art keywords
stream
adsorption
xylene
ethylbenzene
desorption
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.)
Expired
Application number
GB5361273A
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 Oil Corp
Original Assignee
Mobil Oil Corp
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 Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of GB1420796A publication Critical patent/GB1420796A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
    • B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • C01B33/28—Base exchange silicates, e.g. zeolites
    • C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
    • C01B33/2876—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures from a reacting mixture containing an amine or an organic cation, e.g. a quaternary onium cation-ammonium, phosphonium, stibonium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
    • C07C7/13—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique

Abstract

1420796 Separating C 8 aromatic isomers by adsorption MOBIL OIL CORP 19 Nov 1973 [28 Nov 1972] 53612/73 Heading C5E A C 8 aromatic mixture is separated into a first stream comprising meta and ortho xylenes and a second stream comprising para xylene and ethylbenzene by selective adsorption of the latter stream on a ZSM.5 or ZSM.8 zeolite which is disposed in at least two parallel columns which are operated such that adsorption is carried out in one column while desorption is effected in the other and vice versa, m and o xylenes being recovered during the adsorption stages and p-xylene and ethylbenzene during the desorption stages. The meta and ortho xylene stream may be distilled to recover the components, the latter being isomerized and recycled to the adsorption. The isomerization may be carried out at 250-1000‹ F. with a zeolite catalyst and in the presence of toluene as diluent. The second stream may be subjected to crystallization to recover p-xylene and ethylbenzene. Desorption may be effected by (1) reduction in the partial pressure of the sorbed materials in the vapour phase surrounding the adsorbent, (2) lowering the total pressure of the system, (3) heating the adsorbent or preferably (4) purging with an inert desorbent gas or vapour, e.g. steam, He, N 2 , toluene or benzene.
GB5361273A 1972-11-28 1973-11-19 Separation of aromatic isomers Expired GB1420796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31005472A 1972-11-28 1972-11-28

Publications (1)

Publication Number Publication Date
GB1420796A true GB1420796A (en) 1976-01-14

Family

ID=23200805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5361273A Expired GB1420796A (en) 1972-11-28 1973-11-19 Separation of aromatic isomers

Country Status (8)

Country Link
JP (1) JPS5046631A (en)
AU (1) AU6246673A (en)
BE (1) BE807878A (en)
CA (1) CA1059928A (en)
DE (1) DE2359378A1 (en)
GB (1) GB1420796A (en)
IT (1) IT1001436B (en)
NL (1) NL7316302A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003622A1 (en) * 1978-02-07 1979-08-22 Shell Internationale Researchmaatschappij B.V. Process for the preparation and separation of para-xylene
EP0031676A1 (en) * 1979-12-19 1981-07-08 Mobil Oil Corporation Selective sorption by zeolites
EP0531191A1 (en) * 1991-09-05 1993-03-10 Institut Français du Pétrole Process and apparatus for the separation of paraxylene in aromatic hydrocarbures with adsorption in simulated moving bed and one crystallisation step
FR2681066A1 (en) * 1991-09-05 1993-03-12 Inst Francais Du Petrole Process and device for the separation of para-xylenes in a C8 aromatic hydrocarbon feedstock
FR2693187A1 (en) * 1992-07-06 1994-01-07 Inst Francais Du Petrole Sepn. and recovery of para-xylene
FR2693186A1 (en) * 1992-07-06 1994-01-07 Inst Francais Du Petrole Sepn. and recovery of para-xylene
US6060634A (en) * 1995-09-29 2000-05-09 Institut Francais Du Petrole Production of para-xylene from an effluent from paraselective toluene disproportionation using a crystallization process combined with simulated moving bed adsorption
US6147272A (en) * 1994-12-29 2000-11-14 Institut Francais Du Petrole Process for separating paraxylene comprising at least two crystallization stages at high temperature
WO2002004391A1 (en) * 2000-07-10 2002-01-17 Bp Corporation North America Inc. Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed c8 aromatics
US6565653B2 (en) 2001-05-08 2003-05-20 Bp Corporation North America Inc. Energy efficient process for producing high purity paraxylene
US6573418B2 (en) 2000-07-10 2003-06-03 Bp Corporation North America Inc. Process for production of para-xylene incorporating pressure swing adsorption and simulated moving bed adsorption
WO2003059852A1 (en) * 2002-01-09 2003-07-24 Bp Corporation North America Inc. Para-xylene and ethylbenzene separation from mixed c8 aromatics
US6627783B2 (en) 2000-07-10 2003-09-30 Bp Corporation North America Inc. Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed C8 aromatics
US7122496B2 (en) 2003-05-01 2006-10-17 Bp Corporation North America Inc. Para-xylene selective adsorbent compositions and methods
US7271305B2 (en) 2003-05-01 2007-09-18 Bp Corporation North America Inc. Method of obtaining para-xylene
KR100799513B1 (en) 2001-08-21 2008-01-31 더 스탠다드 오일 캄파니 Improved operation of heads column in acrylonitrile production
WO2011119808A1 (en) * 2010-03-25 2011-09-29 Exxonmobil Research And Engineering Company Method of protecting a solid adsorbent and a protected solid adsorbent

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899017A (en) * 1987-07-27 1990-02-06 Mobil Oil Corporation Process for the selective separation of para-xylene from C8 aromatic mixtures

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003622A1 (en) * 1978-02-07 1979-08-22 Shell Internationale Researchmaatschappij B.V. Process for the preparation and separation of para-xylene
EP0031676A1 (en) * 1979-12-19 1981-07-08 Mobil Oil Corporation Selective sorption by zeolites
US5922924A (en) * 1991-09-05 1999-07-13 Institut Français Du Petrole Process for the separation of p-xylene in C8 aromatic hydrocarbons with a simulated moving bed adsorption and a crystallization
EP0531191A1 (en) * 1991-09-05 1993-03-10 Institut Français du Pétrole Process and apparatus for the separation of paraxylene in aromatic hydrocarbures with adsorption in simulated moving bed and one crystallisation step
FR2681066A1 (en) * 1991-09-05 1993-03-12 Inst Francais Du Petrole Process and device for the separation of para-xylenes in a C8 aromatic hydrocarbon feedstock
US5401476A (en) * 1991-09-05 1995-03-28 Institut Francais Du Petrole Apparatus for the separation of p-xylene in C8 aromatic hydrocarbons with a simulated moving bed adsorption and a crystallization
US5284992A (en) * 1991-09-05 1994-02-08 Institut Francais Du Petrole Process and apparatus for the separation of p-xylene in C8 aromatic hydrocarbons with a simulated moving bed absorption and a crystallization
FR2693186A1 (en) * 1992-07-06 1994-01-07 Inst Francais Du Petrole Sepn. and recovery of para-xylene
FR2693187A1 (en) * 1992-07-06 1994-01-07 Inst Francais Du Petrole Sepn. and recovery of para-xylene
US6147272A (en) * 1994-12-29 2000-11-14 Institut Francais Du Petrole Process for separating paraxylene comprising at least two crystallization stages at high temperature
US6060634A (en) * 1995-09-29 2000-05-09 Institut Francais Du Petrole Production of para-xylene from an effluent from paraselective toluene disproportionation using a crystallization process combined with simulated moving bed adsorption
US6689929B2 (en) 2000-07-10 2004-02-10 Bp Corporation North America Inc. Process for the production of para-xylene using toluene feeds and pressure swing adsorption
WO2002004391A1 (en) * 2000-07-10 2002-01-17 Bp Corporation North America Inc. Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed c8 aromatics
US6573418B2 (en) 2000-07-10 2003-06-03 Bp Corporation North America Inc. Process for production of para-xylene incorporating pressure swing adsorption and simulated moving bed adsorption
KR100881876B1 (en) 2000-07-10 2009-02-06 비피 코포레이션 노쓰 아메리카 인코포레이티드 Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed c8 aromatics
US6600083B2 (en) 2000-07-10 2003-07-29 Bp Corporation North America Inc. Para-xylene production process integrating pressure swing adsorption and crystallization
US6627783B2 (en) 2000-07-10 2003-09-30 Bp Corporation North America Inc. Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed C8 aromatics
US6565653B2 (en) 2001-05-08 2003-05-20 Bp Corporation North America Inc. Energy efficient process for producing high purity paraxylene
KR100799513B1 (en) 2001-08-21 2008-01-31 더 스탠다드 오일 캄파니 Improved operation of heads column in acrylonitrile production
WO2003059852A1 (en) * 2002-01-09 2003-07-24 Bp Corporation North America Inc. Para-xylene and ethylbenzene separation from mixed c8 aromatics
US7122496B2 (en) 2003-05-01 2006-10-17 Bp Corporation North America Inc. Para-xylene selective adsorbent compositions and methods
US7271305B2 (en) 2003-05-01 2007-09-18 Bp Corporation North America Inc. Method of obtaining para-xylene
WO2011119808A1 (en) * 2010-03-25 2011-09-29 Exxonmobil Research And Engineering Company Method of protecting a solid adsorbent and a protected solid adsorbent
CN102971071A (en) * 2010-03-25 2013-03-13 埃克森美孚研究工程公司 Method of protecting a solid adsorbent and a protected solid adsorbent
US8500887B2 (en) 2010-03-25 2013-08-06 Exxonmobil Research And Engineering Company Method of protecting a solid adsorbent and a protected solid adsorbent
US8814986B2 (en) 2010-03-25 2014-08-26 ExxonMobil Research and Egineering Company Method of protecting a solid adsorbent and a protected solid adsorbent
CN102971071B (en) * 2010-03-25 2015-09-02 埃克森美孚研究工程公司 The method of protection solid absorbent and shielded solid absorbent

Also Published As

Publication number Publication date
BE807878A (en) 1974-05-27
DE2359378A1 (en) 1974-05-30
IT1001436B (en) 1976-04-20
AU6246673A (en) 1975-05-15
CA1059928A (en) 1979-08-07
NL7316302A (en) 1974-05-30
JPS5046631A (en) 1975-04-25

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Legal Events

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