ES347408A1 - Process for Thermal Hydrodealkylation of an Alkyl Benzene - Google Patents

Process for Thermal Hydrodealkylation of an Alkyl Benzene

Info

Publication number
ES347408A1
ES347408A1 ES347408A ES347408A ES347408A1 ES 347408 A1 ES347408 A1 ES 347408A1 ES 347408 A ES347408 A ES 347408A ES 347408 A ES347408 A ES 347408A ES 347408 A1 ES347408 A1 ES 347408A1
Authority
ES
Spain
Prior art keywords
effluent
reaction zone
benzene
alumina
recovered
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
ES347408A
Other languages
Spanish (es)
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.)
Gulf Research and Development Co
Original Assignee
Gulf Research and Development 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 Gulf Research and Development Co filed Critical Gulf Research and Development Co
Publication of ES347408A1 publication Critical patent/ES347408A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
    • C07C4/08—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule
    • C07C4/12—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene
    • C07C4/14—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene splitting taking place at an aromatic-aliphatic bond
    • C07C4/16—Thermal processes
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/107—Atmospheric residues having a boiling point of at least about 538 °C
    • 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
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Abstract

An alkylbenzene feedstock, particularly toluene, is hydrodealkylated at 538-982 C. in a primary reaction zone an effluent comprising hydrogen, unreacted alkylbenzene, benzene and polyphenyls is recovered and separated, e.g. by fractionation the polyphonyls are hydrocracked at 482-816 C. in an auxiliary reaction zone optionally containing a catalyst, e.g. natural clay, alumina, silica/alumina or sulphided nickel and benzene is recovered from the effluent from both zones. The process is operated continuously, and the two effluents may be combined before the separation stage. Before the separation the combined effluents may be selectively hydrogenated to remove unsaturated aliphatic contaminants. The primary reaction zone may comprise two vessels, the effluent from the first being cooled before entering the second. Suitable operating conditions are given, and a detailed flow-sheet shows inter alia recycling, quenching and heatexchange arrangements.
ES347408A 1966-11-22 1967-11-21 Process for Thermal Hydrodealkylation of an Alkyl Benzene Expired ES347408A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59612566A 1966-11-22 1966-11-22

Publications (1)

Publication Number Publication Date
ES347408A1 true ES347408A1 (en) 1969-01-16

Family

ID=24386075

Family Applications (1)

Application Number Title Priority Date Filing Date
ES347408A Expired ES347408A1 (en) 1966-11-22 1967-11-21 Process for Thermal Hydrodealkylation of an Alkyl Benzene

Country Status (5)

Country Link
DE (1) DE1668155C3 (en)
DK (1) DK134714B (en)
ES (1) ES347408A1 (en)
GB (1) GB1165399A (en)
NL (1) NL159645B (en)

Also Published As

Publication number Publication date
NL6715867A (en) 1968-05-24
DE1668155B2 (en) 1977-11-24
DE1668155A1 (en) 1971-04-15
NL159645B (en) 1979-03-15
GB1165399A (en) 1969-09-24
DK134714B (en) 1977-01-03
DK134714C (en) 1977-05-31
DE1668155C3 (en) 1978-07-13

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