GB945629A - Combined steam cracking and hydrodealkylation process - Google Patents

Combined steam cracking and hydrodealkylation process

Info

Publication number
GB945629A
GB945629A GB20864/62A GB2086462A GB945629A GB 945629 A GB945629 A GB 945629A GB 20864/62 A GB20864/62 A GB 20864/62A GB 2086462 A GB2086462 A GB 2086462A GB 945629 A GB945629 A GB 945629A
Authority
GB
United Kingdom
Prior art keywords
steam cracking
naphthalene
aromatic
alkyl
mols
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
GB20864/62A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering 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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB945629A publication Critical patent/GB945629A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C10G69/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process
    • C10G69/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only
    • C10G69/06—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of thermal cracking in the absence of hydrogen
    • 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
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/30—Aromatics

Abstract

Naphthalene and/or benzene are obtained by hydrodealkylation at 1100-1600 DEG F. of an aromatic concentrate boiling in the range 160-600 DEG F. obtained by distilling the product of steam cracking a crude or catalytic cracking product boiling in the range 300-850 DEG F. The steam cracking is preferably effected at 1100-1500 DEG F. and 1-20 p.s.i.g. for 0.1-1 second using 50-90 mols. of steam per mol. of feed at a conversion to C3- of 20-60% wt. Tetralins present are dehydrogenated to alkyl naphthalenes in the steam cracking. The aromatic cut may contain both benzene and naphthalene or only naphthalene precursors. Dealkylation is preferably effected at 500-1000 p.s.i.g. for 2-120 seconds in a reaction zone having a length to diameter ratio of 40-150 : 1. Hydrogen-containing gas (at least 50% hydrogen) is initially supplied in a mol. ratio to alkyl aromatics of 1-6 : 1 and additional amounts of cool gas are added along the reactor to control the temperature below 1300 DEG F., this additional amount being 2-15 mols. per mol. of alkyl aromatic.
GB20864/62A 1961-06-19 1962-05-30 Combined steam cracking and hydrodealkylation process Expired GB945629A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US117808A US3145238A (en) 1961-06-19 1961-06-19 Hydrodealkylation of special feed stocks

Publications (1)

Publication Number Publication Date
GB945629A true GB945629A (en) 1964-01-02

Family

ID=22374943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20864/62A Expired GB945629A (en) 1961-06-19 1962-05-30 Combined steam cracking and hydrodealkylation process

Country Status (4)

Country Link
US (1) US3145238A (en)
DE (1) DE1443763A1 (en)
GB (1) GB945629A (en)
NL (1) NL279655A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240831A (en) * 1962-09-10 1966-03-15 Texaco Inc Hydrocarbon conversion process
US3350295A (en) * 1965-12-28 1967-10-31 Exxon Research Engineering Co Oxidized binder pitch from dealkylated condensed aromatic petroleum fractions
US3517076A (en) * 1966-02-14 1970-06-23 Monsanto Co Thermal hydrodealkylation of alkyl aromatic hydrocarbons
US3483266A (en) * 1966-12-20 1969-12-09 Monsanto Co Thermal dealkylation of alkyl aromatic compounds employing a hydrogen donor and molecular hydrogen
US3485883A (en) * 1966-12-27 1969-12-23 Monsanto Co Dealkylation of alkyl aromatics using a hydrogenated aromatic hydrogen donor
US3548019A (en) * 1968-04-22 1970-12-15 Sun Oil Co Process for the production of naphthalene
US4090942A (en) * 1976-05-19 1978-05-23 Gulf Research & Development Company Process for producing benzene
JPS5930702A (en) * 1982-08-13 1984-02-18 Toyo Eng Corp Method for thermally cracking heavy oil
US4784746A (en) * 1987-04-22 1988-11-15 Mobil Oil Corp. Crude oil upgrading process
US6616909B1 (en) * 1998-07-27 2003-09-09 Battelle Memorial Institute Method and apparatus for obtaining enhanced production rate of thermal chemical reactions
KR100710542B1 (en) * 2005-06-21 2007-04-24 에스케이 주식회사 The method of production increase of light olefins from hydrocarbon feedstock
US10093873B2 (en) 2016-09-06 2018-10-09 Saudi Arabian Oil Company Process to recover gasoline and diesel from aromatic complex bottoms
US11066344B2 (en) 2017-02-16 2021-07-20 Saudi Arabian Oil Company Methods and systems of upgrading heavy aromatics stream to petrochemical feedstock
US11066609B2 (en) 2019-11-01 2021-07-20 Saudi Arabian Oil Company Integrated methods and systems of hydrodearylation and hydrodealkylation of heavy aromatics to produce benzene, toluene, and xylenes
US11613714B2 (en) 2021-01-13 2023-03-28 Saudi Arabian Oil Company Conversion of aromatic complex bottoms to useful products in an integrated refinery process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380279A (en) * 1942-05-20 1945-07-10 Standard Oil Dev Co Production of aromatics
US2431515A (en) * 1943-12-24 1947-11-25 Standard Oil Dev Co Production of an aromatic gasoline

Also Published As

Publication number Publication date
NL279655A (en)
US3145238A (en) 1964-08-18
DE1443763A1 (en) 1968-12-19

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