GB1122017A - Process for the hydrodealkylation of an alkyl aromatic hydrocarbon - Google Patents

Process for the hydrodealkylation of an alkyl aromatic hydrocarbon

Info

Publication number
GB1122017A
GB1122017A GB4780465A GB4780465A GB1122017A GB 1122017 A GB1122017 A GB 1122017A GB 4780465 A GB4780465 A GB 4780465A GB 4780465 A GB4780465 A GB 4780465A GB 1122017 A GB1122017 A GB 1122017A
Authority
GB
United Kingdom
Prior art keywords
sulphide
hydrodealkylation
alkyl aromatic
hydrogen
aromatic hydrocarbon
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
GB4780465A
Inventor
Charles Woodward Montgomery
Rodney Edwin Peterson
Theodore Rice
Eldon Marvin Sutphin
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
Priority to GB4780465A priority Critical patent/GB1122017A/en
Publication of GB1122017A publication Critical patent/GB1122017A/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
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • B01J19/0026—Avoiding carbon deposits

Landscapes

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

Abstract

In the thermal hydrodealkylation of alkyl aromatic hydrocarbns in a metal reactor, the reactor is pretreated with hydrogen sulphide to form a metal sulphide coating, the hydrocarbon is then passed through with hydrogen at 621-982 DEG C. and at least 7 kg./cm.2g. and at intervals the feed is stopped and replaced by a flow of hydrogen sulphide or other sulphur compound in the hydrocarbon feed to maintain the sulphide layer. Other sulphur compounds which may be used are alkyl mercaptans, carbonyl sulphide, carbon disulphide or sulphur dioxide or trioxide.
GB4780465A 1965-11-10 1965-11-10 Process for the hydrodealkylation of an alkyl aromatic hydrocarbon Expired GB1122017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4780465A GB1122017A (en) 1965-11-10 1965-11-10 Process for the hydrodealkylation of an alkyl aromatic hydrocarbon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4780465A GB1122017A (en) 1965-11-10 1965-11-10 Process for the hydrodealkylation of an alkyl aromatic hydrocarbon

Publications (1)

Publication Number Publication Date
GB1122017A true GB1122017A (en) 1968-07-31

Family

ID=10446302

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4780465A Expired GB1122017A (en) 1965-11-10 1965-11-10 Process for the hydrodealkylation of an alkyl aromatic hydrocarbon

Country Status (1)

Country Link
GB (1) GB1122017A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994015896A2 (en) * 1993-01-04 1994-07-21 Chevron Chemical Company Hydrodealkylation processes
US5575902A (en) 1994-01-04 1996-11-19 Chevron Chemical Company Cracking processes
US5593571A (en) 1993-01-04 1997-01-14 Chevron Chemical Company Treating oxidized steels in low-sulfur reforming processes
US5674376A (en) * 1991-03-08 1997-10-07 Chevron Chemical Company Low sufur reforming process
US5723707A (en) 1993-01-04 1998-03-03 Chevron Chemical Company Dehydrogenation processes, equipment and catalyst loads therefor
US5849969A (en) 1993-01-04 1998-12-15 Chevron Chemical Company Hydrodealkylation processes
US6258256B1 (en) 1994-01-04 2001-07-10 Chevron Phillips Chemical Company Lp Cracking processes
US6274113B1 (en) 1994-01-04 2001-08-14 Chevron Phillips Chemical Company Lp Increasing production in hydrocarbon conversion processes
US6419986B1 (en) 1997-01-10 2002-07-16 Chevron Phillips Chemical Company Ip Method for removing reactive metal from a reactor system
USRE38532E1 (en) 1993-01-04 2004-06-08 Chevron Phillips Chemical Company Lp Hydrodealkylation processes

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5863418A (en) * 1991-03-08 1999-01-26 Chevron Chemical Company Low-sulfur reforming process
US5674376A (en) * 1991-03-08 1997-10-07 Chevron Chemical Company Low sufur reforming process
US6548030B2 (en) 1991-03-08 2003-04-15 Chevron Phillips Chemical Company Lp Apparatus for hydrocarbon processing
US5676821A (en) * 1991-03-08 1997-10-14 Chevron Chemical Company Method for increasing carburization resistance
WO1994015896A2 (en) * 1993-01-04 1994-07-21 Chevron Chemical Company Hydrodealkylation processes
US5593571A (en) 1993-01-04 1997-01-14 Chevron Chemical Company Treating oxidized steels in low-sulfur reforming processes
US5723707A (en) 1993-01-04 1998-03-03 Chevron Chemical Company Dehydrogenation processes, equipment and catalyst loads therefor
US5849969A (en) 1993-01-04 1998-12-15 Chevron Chemical Company Hydrodealkylation processes
USRE38532E1 (en) 1993-01-04 2004-06-08 Chevron Phillips Chemical Company Lp Hydrodealkylation processes
US5866743A (en) 1993-01-04 1999-02-02 Chevron Chemical Company Hydrodealkylation processes
WO1994015896A3 (en) * 1993-01-04 1994-10-27 Chevron Res & Tech Hydrodealkylation processes
US6258256B1 (en) 1994-01-04 2001-07-10 Chevron Phillips Chemical Company Lp Cracking processes
US6274113B1 (en) 1994-01-04 2001-08-14 Chevron Phillips Chemical Company Lp Increasing production in hydrocarbon conversion processes
US6602483B2 (en) 1994-01-04 2003-08-05 Chevron Phillips Chemical Company Lp Increasing production in hydrocarbon conversion processes
US5575902A (en) 1994-01-04 1996-11-19 Chevron Chemical Company Cracking processes
US6419986B1 (en) 1997-01-10 2002-07-16 Chevron Phillips Chemical Company Ip Method for removing reactive metal from a reactor system
US6551660B2 (en) 1997-01-10 2003-04-22 Chevron Phillips Chemical Company Lp Method for removing reactive metal from a reactor system

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