GB1492266A - Process for the recovery of styrene and substituted derivatives thereof - Google Patents

Process for the recovery of styrene and substituted derivatives thereof

Info

Publication number
GB1492266A
GB1492266A GB2288975A GB2288975A GB1492266A GB 1492266 A GB1492266 A GB 1492266A GB 2288975 A GB2288975 A GB 2288975A GB 2288975 A GB2288975 A GB 2288975A GB 1492266 A GB1492266 A GB 1492266A
Authority
GB
United Kingdom
Prior art keywords
caprolactam
extractive distillation
styrene
fraction
recovery
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
GB2288975A
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.)
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
Original Assignee
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
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 Leuna Werke GmbH, Leuna Werke Walter Ulbright Germany VEB filed Critical Leuna Werke GmbH
Publication of GB1492266A publication Critical patent/GB1492266A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00Purification; Separation; Use of additives
    • C07C7/04Purification; Separation; Use of additives by distillation
    • C07C7/05Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
    • C07C7/08Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1492266 Extractive distillation LEUNAWERKE "WALTER ULBRICHT" VEB 23 May 1975 [13 June 1974] 22889/75 Heading C5E Styrene, or substituted styrene, is recovered from mixtures by extractive distillation at reduced pressure and in the presence of a polymerization inhibitor, such as hydroquinone, using a solvent comprising an N-alkyl-#- caprolactam. The caprolactam can be N- methyl-#-caprolactam or N-ethyl-#-caprolactam and can be used in admixture with ethylene glycol or diethylene glycol. The styrenecontaining mixture can be produced by the cracking of benzines or diesel oils or by the dehydrogenation of ethyl benzenes and can be separated into a C 8 fraction, a C 7 and lower fraction and a C 9 and higher fraction by fractional distillation prior to the extractive distillation. The extractive distillation can be carried out at 45-50‹ C. and 30 mmHg.
GB2288975A 1974-06-13 1975-05-23 Process for the recovery of styrene and substituted derivatives thereof Expired GB1492266A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD17912574A DD115897A1 (en) 1974-06-13 1974-06-13

Publications (1)

Publication Number Publication Date
GB1492266A true GB1492266A (en) 1977-11-16

Family

ID=5496138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2288975A Expired GB1492266A (en) 1974-06-13 1975-05-23 Process for the recovery of styrene and substituted derivatives thereof

Country Status (6)

Country Link
CS (1) CS186932B1 (en)
DD (1) DD115897A1 (en)
DE (1) DE2521154A1 (en)
FR (1) FR2274585A1 (en)
GB (1) GB1492266A (en)
SU (1) SU564300A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102311304A (en) * 2010-06-29 2012-01-11 中国石油化工股份有限公司 Complex solvent for separating out styrene through extractive distillation and application thereof
CN110028376A (en) * 2018-01-12 2019-07-19 中国石油化工股份有限公司 The purification of extracting, rectifying and separating phenylethylene solvent for use and styrene separation process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8362313B2 (en) * 2009-07-17 2013-01-29 Gtc Technology, Lp Processes and systems for recovery of styrene from a styrene-containing feedstock
RU2722271C1 (en) * 2019-10-02 2020-05-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" Method of extracting styrene from pyro-condensate fraction c8

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102311304A (en) * 2010-06-29 2012-01-11 中国石油化工股份有限公司 Complex solvent for separating out styrene through extractive distillation and application thereof
CN102311304B (en) * 2010-06-29 2014-10-01 中国石油化工股份有限公司 Complex solvent for separating out styrene through extractive distillation and application thereof
CN110028376A (en) * 2018-01-12 2019-07-19 中国石油化工股份有限公司 The purification of extracting, rectifying and separating phenylethylene solvent for use and styrene separation process

Also Published As

Publication number Publication date
FR2274585A1 (en) 1976-01-09
DE2521154A1 (en) 1976-02-26
DD115897A1 (en) 1975-10-20
SU564300A1 (en) 1977-07-05
FR2274585B1 (en) 1980-08-08
CS186932B1 (en) 1978-12-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee