GB1274784A - Recovery of aromatic hydrocarbons - Google Patents

Recovery of aromatic hydrocarbons

Info

Publication number
GB1274784A
GB1274784A GB6208/70A GB620870A GB1274784A GB 1274784 A GB1274784 A GB 1274784A GB 6208/70 A GB6208/70 A GB 6208/70A GB 620870 A GB620870 A GB 620870A GB 1274784 A GB1274784 A GB 1274784A
Authority
GB
United Kingdom
Prior art keywords
column
extractive distillation
styrene
columns
extractive
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
GB6208/70A
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.)
Toray Industries Inc
Original Assignee
Toray Industries 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
Priority claimed from JP1110469A external-priority patent/JPS4813099B1/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of GB1274784A publication Critical patent/GB1274784A/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
    • C10G7/00—Distillation of hydrocarbon oils
    • C10G7/08—Azeotropic or extractive distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
    • C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation

Abstract

1,274,784. Extractive distillation; catalytic hydrogenation. TORAY INDUSTRIES Inc. 10 Feb., 1970 [17 Feb., 1969; 26 Aug., 1969], No. 6208/70. Heading C5E. Styrene and xylene are separated from hydrocarbon fractions by subjecting the fractions to extractive-distillation with a dialkylacetamide, dialkylsulphoxide, an alkylene carbonate, a lactone, phenol, m-cresol, aniline or an alkylaniline as solvent to obtain xylene in the distillate and styrene as a residue. The hydrocarbon fraction can be an oil produced in the thermal cracking of naphtha to ethylene and containing hydrocarbons having 5 to 9 carbon atoms. This oil can be distilled at atmospheric pressure in one or two separate columns to remove materials having up to 7 or more than 9 carbon atoms and the remaining material is passed to the extractive distillation. 10-500 p.p.m. of hydroquinone, t-butylcatechol, phenothiazine or sulphur can be included in the extractive distillation to inhibit polymerization of styrene. The extractive distillation can be carried out at below 120‹ C. and below 200 mm. Hg absolute with a reflux ratio between 10 and 30 in one column or in two columns. When two columns are used the extract solvent is fed to the tops of each column, the feed is passed to the middle of the first column and the bottoms from the first column is fed to the middle of the second column. The top fraction from the extractive distillation can be mixed with the up to C 7 material distilled from the feed and the mixture hydrogenated at 10-200 kg./sq. cm. abs. and 100- 400‹ C. using a catalyst of Co, Mo and/or W to produce ethylbenzene and o-, m- and p-xylenes.
GB6208/70A 1969-02-17 1970-02-10 Recovery of aromatic hydrocarbons Expired GB1274784A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1110469A JPS4813099B1 (en) 1969-02-17 1969-02-17
JP6688669 1969-08-26

Publications (1)

Publication Number Publication Date
GB1274784A true GB1274784A (en) 1972-05-17

Family

ID=26346492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6208/70A Expired GB1274784A (en) 1969-02-17 1970-02-10 Recovery of aromatic hydrocarbons

Country Status (5)

Country Link
US (1) US3684665A (en)
BE (1) BE745743A (en)
DE (1) DE2006863C3 (en)
GB (1) GB1274784A (en)
NL (1) NL7001959A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2176488B1 (en) * 1972-03-20 1975-03-21 Inst Francais Du Petrole
US4050993A (en) * 1972-09-11 1977-09-27 Cosden Oil & Chemical Company Distillation of readily polymerizable ethylenically unsaturated compounds
NL7509991A (en) * 1975-08-25 1977-03-01 Stamicarbon PROCEDURE FOR THE WINNING OF STYRENE FROM CRACKED HYDROCARBONS.
US4115208A (en) * 1975-08-25 1978-09-19 Stamicarbon, B.V. Recovery of styrene from cracked hydrocarbon fractions
US4031153A (en) * 1975-09-25 1977-06-21 Phillips Petroleum Company Separation of styrene from xylenes
US4129605A (en) * 1977-01-28 1978-12-12 Phillips Petroleum Company Recovering styrene by complexing with copper(I) sulfonates
DE2911394B1 (en) * 1979-03-23 1980-04-30 Basf Ag Process for obtaining a conjugated diolefin from a C4 or C5 hydrocarbon mixture
US4379027A (en) * 1981-12-24 1983-04-05 Mobil Oil Corporation Selective hydrogenation of vinyltoluene
US4959128A (en) * 1990-02-26 1990-09-25 Lloyd Berg Separation of styrene from ethyl benzene by extractive distillation
US5039380A (en) * 1991-04-03 1991-08-13 Lloyd Berg Separation of m-xylene from p-xylene or o-xylene by azeotropic distillation
US5094725A (en) * 1991-04-04 1992-03-10 Lloyd Berg Separation of m-xylene from o-xylene by extractive distillation with esters
US5091059A (en) * 1991-10-22 1992-02-25 Lloyd Berg Separation of p-xylene from m-xylene by extractive distillation
US5877385A (en) * 1996-05-21 1999-03-02 Hfm International, Inc. Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures
ZA972966B (en) * 1996-05-21 1997-11-21 Glitsch Int Inc Recovery of styrene from purolysis gasoline by extractive distillation.
DE10038349C1 (en) * 2000-08-05 2002-01-31 Basf Ag Distillation of vinylaromatic monomer, especially styrene, is carried out in presence of 4-tert.-butylcatechol and oxygen without adding aromatic nitro- or amino-compound
DE102005029643B3 (en) * 2005-06-23 2006-07-20 Uhde Gmbh Extraction of styrene comprises fractionation of pyrolysis benzol fraction into three different carbon fractions, hydrogenation of the fraction containing phenyl acetylene and extractive distillation to obtain a styrene-rich portion
US8771476B2 (en) * 2009-07-17 2014-07-08 Gtc Technology Lp Methods for inhibiting polymerization of vinyl aromatic compounds during extractive distillation
US9353024B2 (en) 2013-02-06 2016-05-31 Exxonmobil Chemical Patents Inc. Selective hydrogenation of styrene to ethylbenzene
JP2017529392A (en) * 2014-09-05 2017-10-05 エスシージー ケミカルズ カンパニー，リミテッド Separation process for C8 aromatic mixtures
KR102275314B1 (en) * 2014-09-05 2021-07-12 에스씨지 케미컬스 컴퍼니, 리미티드. Process for the enhanced separation of ethylbenzene
KR102464480B1 (en) * 2020-06-16 2022-11-07 주식회사 엘지화학 Method for preparing aromatic hydrocarbon
KR102583535B1 (en) * 2020-06-16 2023-09-27 주식회사 엘지화학 Method for preparing aromatic hydrocarbon

Also Published As

Publication number Publication date
DE2006863B2 (en) 1973-06-20
NL7001959A (en) 1970-08-19
DE2006863C3 (en) 1974-01-31
DE2006863A1 (en) 1971-09-09
BE745743A (en) 1970-07-16
US3684665A (en) 1972-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]