GB1322289A - Purification of hydrodealkylation reaction vent hydrogen - Google Patents

Purification of hydrodealkylation reaction vent hydrogen

Info

Publication number
GB1322289A
GB1322289A GB5599671A GB5599671A GB1322289A GB 1322289 A GB1322289 A GB 1322289A GB 5599671 A GB5599671 A GB 5599671A GB 5599671 A GB5599671 A GB 5599671A GB 1322289 A GB1322289 A GB 1322289A
Authority
GB
United Kingdom
Prior art keywords
benzene
separated
toluene
liquid
aromatics
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
GB5599671A
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.)
Hydrocarbon Research Inc
Original Assignee
Hydrocarbon Research 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
Application filed by Hydrocarbon Research Inc filed Critical Hydrocarbon Research Inc
Publication of GB1322289A publication Critical patent/GB1322289A/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
    • C07C15/04—Benzene
    • 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
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S585/00—Chemistry of hydrocarbon compounds
    • Y10S585/8995—Catalyst and recycle considerations
    • Y10S585/901—Catalyst and recycle considerations with recycle, rehabilitation, or preservation of solvent, diluent, or mass action agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

1322289 Hydrodealkylation HYDROCARBON RESEARCH Inc 2 Dec 1971 [24 Dec 1970] 55996/71 Heading C5E An alkylated aromatic hydrocarbon feed is reacted with H 2 at 1000-1500‹ F. and 400- 800 p.s.i.g. then (1); the effluent is cooled and a H 2 -rich vapour is separated from the liquid portion, which is then separated into a light hydrocarbon gas and a liquid bottom; (2) benzene is then separated and recovered from the liquid bottoms; (3) the H 2 from (1) is contacted with heavy hydrocarbons to shift the benzene-toluene equilibrium, and the mixture is flashed to obtain a liquid phase of 5-20% benzene and a vapour phase of 0À2- 0À5% aromatics with a toluene : benzene ratio of 2 : 1 to 15 : 1. If this ratio is more than 8 :1, the H 2 is fed to a purification unit. The heavy hydrocarbons in step (3) may be the feed, the liquid bottoms in step (1) or the overheads from a subsequent zone in which heavy aromatics are separated from the above liquid bottoms. The hydrocarbon feed may be toluene or mixed aromatics which need not contain toluene.
GB5599671A 1970-12-24 1971-12-02 Purification of hydrodealkylation reaction vent hydrogen Expired GB1322289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10132170A 1970-12-24 1970-12-24

Publications (1)

Publication Number Publication Date
GB1322289A true GB1322289A (en) 1973-07-04

Family

ID=22284033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5599671A Expired GB1322289A (en) 1970-12-24 1971-12-02 Purification of hydrodealkylation reaction vent hydrogen

Country Status (6)

Country Link
US (1) US3666826A (en)
CA (1) CA954535A (en)
ES (1) ES392324A1 (en)
FR (1) FR2126989B1 (en)
GB (1) GB1322289A (en)
IT (1) IT953201B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3188359A (en) * 1962-03-01 1965-06-08 Pullman Inc Non-catalytic dealkylation of alkyl substituted benzene-ring compounds
US3213151A (en) * 1962-07-27 1965-10-19 Phillips Petroleum Co Recovery of hydrogen from gaseous mixtures and improved hydrogenation process
US3291849A (en) * 1964-11-16 1966-12-13 Hydrocarbon Research Inc Hydrodealkylation
US3260765A (en) * 1965-05-25 1966-07-12 Universal Oil Prod Co Treatment of alkyl-substituted aromatic compounds
US3287431A (en) * 1965-09-13 1966-11-22 Atlantic Refining Co Hydrodealkylation with azeotrope recycle

Also Published As

Publication number Publication date
IT953201B (en) 1973-08-10
FR2126989A1 (en) 1972-10-13
US3666826A (en) 1972-05-30
ES392324A1 (en) 1973-08-16
FR2126989B1 (en) 1973-06-08
CA954535A (en) 1974-09-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee