GB803763A - Process for the separation by extractive distillation of cyclopentane from neohexane - Google Patents

Process for the separation by extractive distillation of cyclopentane from neohexane

Info

Publication number
GB803763A
GB803763A GB21609/56A GB2160956A GB803763A GB 803763 A GB803763 A GB 803763A GB 21609/56 A GB21609/56 A GB 21609/56A GB 2160956 A GB2160956 A GB 2160956A GB 803763 A GB803763 A GB 803763A
Authority
GB
United Kingdom
Prior art keywords
cyclopentane
neohexane
distillation
ether
per cent
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
GB21609/56A
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB803763A publication Critical patent/GB803763A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/06—Systems containing only non-condensed rings with a five-membered ring
    • C07C2601/08—Systems containing only non-condensed rings with a five-membered ring the ring being saturated

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

Cyclopentane is separated from hydrocarbon mixtures which also contain neohexane by submitting the mixture to extractive distillation using, as extractant, a lower monoalkyl ether of ethylene glycol or an aqueous solution thereof; a solution of cyclopentane in the extractant is withdrawn from the base of the distillation column. In an example, a technical isohexane fraction obtained by fractional distillation of Venezuelan crude oil was distilled, and an azeotrope of cyclopentane and neohexane was collected. This azeotrope was fed as a vapour to the middle of a distillation column; and the monomethyl ether of ethylene glycol was introduced at a higher level in the column. The ratio by weight between the quantity of ether and the quantity of cyclohexane/neohexane mixture was 10 : 1. The overhead vapours comprised about 70 per cent neohexane and about 30 per cent cyclopentane by volume. A solution of cyclopentane in the ether was drawn off as bottom product which, on simple distillation, yielded cyclopentane having a purity of more than 99 per cent.
GB21609/56A 1955-07-14 1956-07-12 Process for the separation by extractive distillation of cyclopentane from neohexane Expired GB803763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL803763X 1955-07-14

Publications (1)

Publication Number Publication Date
GB803763A true GB803763A (en) 1958-10-29

Family

ID=19836496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21609/56A Expired GB803763A (en) 1955-07-14 1956-07-12 Process for the separation by extractive distillation of cyclopentane from neohexane

Country Status (1)

Country Link
GB (1) GB803763A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105859506A (en) * 2015-01-21 2016-08-17 中国石油天然气股份有限公司 Method for separating cyclopentane and neohexane by extractive distillation process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105859506A (en) * 2015-01-21 2016-08-17 中国石油天然气股份有限公司 Method for separating cyclopentane and neohexane by extractive distillation process
CN105859506B (en) * 2015-01-21 2018-07-13 中国石油天然气股份有限公司 Method for separating cyclopentane and neohexane by extractive distillation process

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