IT1079198B - PROCEDURE FOR THE DIRECT OBTAINMENT OF ISOBUTYLENE FROM HYDROCARBON MIXTURES - Google Patents

PROCEDURE FOR THE DIRECT OBTAINMENT OF ISOBUTYLENE FROM HYDROCARBON MIXTURES

Info

Publication number
IT1079198B
IT1079198B IT2882476A IT2882476A IT1079198B IT 1079198 B IT1079198 B IT 1079198B IT 2882476 A IT2882476 A IT 2882476A IT 2882476 A IT2882476 A IT 2882476A IT 1079198 B IT1079198 B IT 1079198B
Authority
IT
Italy
Prior art keywords
isobutylene
reaction
methanol
sulphuric acid
oct
Prior art date
Application number
IT2882476A
Other languages
Italian (it)
Inventor
Janos Laky
Rezso Csikos
Lajos Peterfy
Istvan Pallay
Lajos Szvetelsky
Original Assignee
Magyar Asvanyolaj Es Foeldgaz
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 Magyar Asvanyolaj Es Foeldgaz filed Critical Magyar Asvanyolaj Es Foeldgaz
Application granted granted Critical
Publication of IT1079198B publication Critical patent/IT1079198B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/05—Preparation of ethers by addition of compounds to unsaturated compounds
    • C07C41/06—Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only
    • 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
    • C07C7/14875—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with organic compounds
    • C07C7/14891—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with organic compounds alcohols

Abstract

1532477 Separating isobutylene by selective reaction MAGYAR ASVANYOLAJ ES FOLDGAZ KISERLETI INTEZET 7 Oct 1976 [29 Oct 1975] 41688/76 Heading C5E [Also in Division C2] Isobutylene is removed as methly t-butyl ether from mixtures containing predominantly isobutylene and other C 4 hydrocarbons by reacting with a stoichiometric excess of the required quantity of methanol in the presence of sulphuric acid catalyst in a homogeneous liquid phase at 50-120‹ C.; after the reaction the mixture is cooled to between -25 and +40‹ C. and a quantity of reaction product from which methanol has been removed and/or a quantity of a C 4 fraction free ofisobutene obtained in the process is added; the sulphuric acid phase which then separates is recirculated to the reaction, and methanol and methyl t-butyl ether are isolated by aqueous washing and distilling the residual mixture which contains sulphuric acid in a reduced quantity. The C 4 hydrocarbon mixtures may be a fraction derived from a catalytic cracking process or from the pyrolysis of gasoline, and may contain butadiene as well as butanes and butenes.
IT2882476A 1975-10-29 1976-10-28 PROCEDURE FOR THE DIRECT OBTAINMENT OF ISOBUTYLENE FROM HYDROCARBON MIXTURES IT1079198B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUMA002724 HU175954B (en) 1975-10-29 1975-10-29 Process for direct separation of isobutylene form mixtures of hydrocarbones

Publications (1)

Publication Number Publication Date
IT1079198B true IT1079198B (en) 1985-05-08

Family

ID=10998814

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2882476A IT1079198B (en) 1975-10-29 1976-10-28 PROCEDURE FOR THE DIRECT OBTAINMENT OF ISOBUTYLENE FROM HYDROCARBON MIXTURES

Country Status (16)

Country Link
JP (1) JPS5257103A (en)
AT (1) AT346297B (en)
BE (1) BE847862A (en)
CA (1) CA1077066A (en)
CS (1) CS205045B2 (en)
DD (1) DD126591A1 (en)
DE (1) DE2649623A1 (en)
FR (1) FR2329622A1 (en)
GB (1) GB1532477A (en)
HU (1) HU175954B (en)
IT (1) IT1079198B (en)
NL (1) NL7611965A (en)
PL (1) PL110592B1 (en)
RO (1) RO71263A (en)
SU (1) SU915797A3 (en)
YU (1) YU39977B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928510A1 (en) * 1979-07-14 1981-01-29 Basf Ag METHOD FOR PRODUCING ISOBUTEN FROM ISOBUTEN CONTAINING C TIEF 4-HYDROCARBON MIXTURES
DE2928509A1 (en) * 1979-07-14 1981-01-29 Basf Ag METHOD FOR THE SIMULTANEOUS PRODUCTION OF METHYL-TERT.-BUTYL ETHER AND PRODUCTION OF ISOBUTEN
ZA813808B (en) * 1980-06-12 1983-01-26 British Petroleum Co Isobutene by dehydroisomerisation of normal butane
CN113582801B (en) * 2020-04-30 2023-09-05 中国石油化工股份有限公司 Process for preparing isooctenes by mixing carbon four selective overlapping

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121124A (en) * 1959-05-04 1964-02-11 Sinclair Research Inc Tertiary olefin separation via etherification
US3170000A (en) * 1962-10-24 1965-02-16 Sinclair Research Inc Tertiary olefin separation via etherification with small surface area catalysts
JPS5126401B1 (en) * 1969-03-12 1976-08-06

Also Published As

Publication number Publication date
AT346297B (en) 1978-11-10
HU175954B (en) 1980-11-28
YU39977B (en) 1985-06-30
FR2329622A1 (en) 1977-05-27
FR2329622B1 (en) 1980-07-25
CS205045B2 (en) 1981-04-30
DE2649623A1 (en) 1977-05-12
SU915797A3 (en) 1982-03-23
JPS5614089B2 (en) 1981-04-02
ATA712976A (en) 1978-03-15
DD126591A1 (en) 1977-07-27
RO71263A (en) 1981-06-26
BE847862A (en) 1977-02-14
GB1532477A (en) 1978-11-15
YU253076A (en) 1982-05-31
PL110592B1 (en) 1980-07-31
CA1077066A (en) 1980-05-06
JPS5257103A (en) 1977-05-11
NL7611965A (en) 1977-05-03

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