GB1171865A - Continuous Process for the Preparation of p-Xylene. - Google Patents

Continuous Process for the Preparation of p-Xylene.

Info

Publication number
GB1171865A
GB1171865A GB5393/68A GB539368A GB1171865A GB 1171865 A GB1171865 A GB 1171865A GB 5393/68 A GB5393/68 A GB 5393/68A GB 539368 A GB539368 A GB 539368A GB 1171865 A GB1171865 A GB 1171865A
Authority
GB
United Kingdom
Prior art keywords
isomerization
xylene
xylenes
product mixture
recycled
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
GB5393/68A
Inventor
Joost Cornelis Plateeuw
Pieter Cornelis Aben
Derek George Shrubb
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to GB5393/68A priority Critical patent/GB1171865A/en
Priority to BE722433D priority patent/BE722433A/xx
Priority to ES359257A priority patent/ES359257A1/en
Priority to DE1803694A priority patent/DE1803694C3/en
Priority to FR1588697D priority patent/FR1588697A/fr
Priority to NL6814836.A priority patent/NL162049C/en
Priority to JP43075348A priority patent/JPS4947734B1/ja
Priority to CA032,810A priority patent/CA986144A/en
Priority to SE14035/68A priority patent/SE352332B/xx
Publication of GB1171865A publication Critical patent/GB1171865A/en
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
    • C07C5/27—Rearrangement of carbon atoms in the hydrocarbon skeleton
    • C07C5/2702—Catalytic processes not covered by C07C5/2732 - C07C5/31; Catalytic processes covered by both C07C5/2732 and C07C5/277 simultaneously
    • C07C5/2724—Catalytic processes not covered by C07C5/2732 - C07C5/31; Catalytic processes covered by both C07C5/2732 and C07C5/277 simultaneously with metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1,171,865. Isomerizing xylenes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 17 Oct., 1968 [19 Oct., 1967; 2 Feb., 1968], Nos. 47587/67 and 5393/68. Heading C5E. In a one-stage continuous isomerization process in which a mixture of two or more C 8 aromatic hydrocarbons comprising ethylbenzene as one component is contacted with hydrogen in an isomerization section in the presence of a catalyst comprising an acidic refractory oxide and a hydrogenating/dehydrogenating metal component, and in which the product mixture is subsequently fractionated, the isomerization is conducted under such conditions of temperature and hydrogen partial pressure that the product mixture before fractionation contains 1-50 wt. per cent of C 8 naphthenes, at least 10% of which are recycled, after recovery, direct to the isomerization. Decrease in catalyst activity may be counteracted by increasing both temperature and hydrogen partial pressure in such a way that the product mixture maintains the desired C 8 naphthene content. Individual xylenes may be recovered as desired: o-xylene by appropriate fractionation, m-xylene by extraction with HF/BF 3 or HF/PF 5 , and p-xylene by crystallization. Unwanted xylenes may be recycled to isomerization.
GB5393/68A 1967-10-19 1967-10-19 Continuous Process for the Preparation of p-Xylene. Expired GB1171865A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB5393/68A GB1171865A (en) 1967-10-19 1967-10-19 Continuous Process for the Preparation of p-Xylene.
BE722433D BE722433A (en) 1967-10-19 1968-10-17
ES359257A ES359257A1 (en) 1967-10-19 1968-10-17 Continuous Process for the Preparation of p-Xylene.
DE1803694A DE1803694C3 (en) 1967-10-19 1968-10-17 Process for the continuous isomerization of aromatic C8 hydrocarbons for the production of p-xylene
FR1588697D FR1588697A (en) 1967-10-19 1968-10-17
NL6814836.A NL162049C (en) 1967-10-19 1968-10-17 PROCESS FOR CONTINUOUS ISOMERIZATION IN A STAGE OF A MIXTURE OF TWO OR MORE C8 AROMATIC HYDROCARBONS.
JP43075348A JPS4947734B1 (en) 1967-10-19 1968-10-17
CA032,810A CA986144A (en) 1967-10-19 1968-10-17 Continuous process for the preparation of p-xylene
SE14035/68A SE352332B (en) 1967-10-19 1968-10-17

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5393/68A GB1171865A (en) 1967-10-19 1967-10-19 Continuous Process for the Preparation of p-Xylene.
GB4758767 1967-10-19

Publications (1)

Publication Number Publication Date
GB1171865A true GB1171865A (en) 1969-11-26

Family

ID=26239857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5393/68A Expired GB1171865A (en) 1967-10-19 1967-10-19 Continuous Process for the Preparation of p-Xylene.

Country Status (9)

Country Link
JP (1) JPS4947734B1 (en)
BE (1) BE722433A (en)
CA (1) CA986144A (en)
DE (1) DE1803694C3 (en)
ES (1) ES359257A1 (en)
FR (1) FR1588697A (en)
GB (1) GB1171865A (en)
NL (1) NL162049C (en)
SE (1) SE352332B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1255459A (en) * 1970-05-26 1971-12-01 Shell Int Research Process for the isomerization of alkylaromatic hydrocarbons
US4139571A (en) * 1977-09-14 1979-02-13 Atlantic Richfield Company C8 Alkyl aromatic hydrocarbon isomerization by recycling benzene and toluene

Also Published As

Publication number Publication date
NL162049C (en) 1980-04-15
BE722433A (en) 1969-04-17
CA986144A (en) 1976-03-23
SE352332B (en) 1972-12-27
DE1803694B2 (en) 1979-05-03
DE1803694A1 (en) 1969-06-26
FR1588697A (en) 1970-04-17
NL162049B (en) 1979-11-15
NL6814836A (en) 1969-04-22
DE1803694C3 (en) 1979-12-20
ES359257A1 (en) 1970-06-01
JPS4947734B1 (en) 1974-12-17

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years