GB701718A - Method of producing phenols free from neutral oil - Google Patents

Method of producing phenols free from neutral oil

Info

Publication number
GB701718A
GB701718A GB24492/51A GB2449251A GB701718A GB 701718 A GB701718 A GB 701718A GB 24492/51 A GB24492/51 A GB 24492/51A GB 2449251 A GB2449251 A GB 2449251A GB 701718 A GB701718 A GB 701718A
Authority
GB
United Kingdom
Prior art keywords
phenols
water
separated
neutral oils
remove
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
GB24492/51A
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB701718A publication Critical patent/GB701718A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/005—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/005—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up
    • C07C37/007—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up from the tar industry

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Phenols are separated from materials containing phenols and neutral oils, e.g. oils and tars, by solvent extraction to give a crude product which is distilled to remove asphaltic impurities and the remaining impurities are separated by extraction, in the presence of water, with substances capable of dissolving neutral oils. Preferably the initial material such as a tar oil is extracted with aqueous alcohol, e.g. aqueous methanol suitably in the presence of low boiling aliphatic hydrocarbons such as benzine which remove the neutral oils. The aqueous alcoholic extract is subjected to a rectifying distillation preferably using a column of over 50 theoretical plates and with an increase reflux ratio, the resulting phenol fraction is saturated with water and treated with a low boiling saturated aliphatic hydrocarbon such as benzine to remove the neutral oils leaving water-saturated phenols, which are separated by distillation. In the case of a phenol fraction containing a high content of higher boiling phenols, the final extraction step is suitably carried out at a slightly elevated temperature and in the presence of a water dissolving substance such as carbolic acid or methanol to increase the miscibility of the phenols with water. An example is given.
GB24492/51A 1948-10-01 1951-10-19 Method of producing phenols free from neutral oil Expired GB701718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE701718X 1948-10-01

Publications (1)

Publication Number Publication Date
GB701718A true GB701718A (en) 1953-12-30

Family

ID=6611499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24492/51A Expired GB701718A (en) 1948-10-01 1951-10-19 Method of producing phenols free from neutral oil

Country Status (1)

Country Link
GB (1) GB701718A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955079A (en) * 1956-11-26 1960-10-04 Texas Power & Light Company Solvent extraction of low-temperature tar and products therefrom
US3153626A (en) * 1960-03-30 1964-10-20 Consolidation Coal Co Methanol extraction of lowtemperature tar
CN111574330A (en) * 2020-06-17 2020-08-25 北京石油化工学院 Separation method of crude phenol and organic amine mixture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955079A (en) * 1956-11-26 1960-10-04 Texas Power & Light Company Solvent extraction of low-temperature tar and products therefrom
US3153626A (en) * 1960-03-30 1964-10-20 Consolidation Coal Co Methanol extraction of lowtemperature tar
CN111574330A (en) * 2020-06-17 2020-08-25 北京石油化工学院 Separation method of crude phenol and organic amine mixture

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