GB992319A - Process for recovering tar phenols and bases from coal tar distillates containing the same - Google Patents

Process for recovering tar phenols and bases from coal tar distillates containing the same

Info

Publication number
GB992319A
GB992319A GB3766461A GB3766461A GB992319A GB 992319 A GB992319 A GB 992319A GB 3766461 A GB3766461 A GB 3766461A GB 3766461 A GB3766461 A GB 3766461A GB 992319 A GB992319 A GB 992319A
Authority
GB
United Kingdom
Prior art keywords
tar
bases
phenols
distillate
coal
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
GB3766461A
Inventor
Ernest Clifford Holdsworth
David Holmes
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.)
YORKSHIRE TAR DISTILLERS Ltd
Original Assignee
YORKSHIRE TAR DISTILLERS Ltd
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 YORKSHIRE TAR DISTILLERS Ltd filed Critical YORKSHIRE TAR DISTILLERS Ltd
Priority to GB3766461A priority Critical patent/GB992319A/en
Publication of GB992319A publication Critical patent/GB992319A/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
    • 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

In recovering tar phenols and organic bases from coal-tar distillates containing them, the distillate is first diluted with a quantity of the same or a similar distillate from which tar phenols and organic bases have been removed, whereafter the bases are washed out with a mineral acid and finally the tar phenols are removed. In the first step the distillate is preferably mixed with such a proportion of phenol-and base-free distillate as to yield a mixture containing 2-15% of tar phenols. The extraction of bases from the mixture is carried out in a number of stages or in counterflow, suitably with aqueous sulphuric acid of 2-20% concentration, and the bases may then be purified by washing with a coal-tar distillate from which bases and tar phenols have been removed. The final removal of tar phenols from the original distillate may be effected with caustic alkali or by extraction with aqueous methanol. Examples are given.
GB3766461A 1961-10-20 1961-10-20 Process for recovering tar phenols and bases from coal tar distillates containing the same Expired GB992319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3766461A GB992319A (en) 1961-10-20 1961-10-20 Process for recovering tar phenols and bases from coal tar distillates containing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3766461A GB992319A (en) 1961-10-20 1961-10-20 Process for recovering tar phenols and bases from coal tar distillates containing the same

Publications (1)

Publication Number Publication Date
GB992319A true GB992319A (en) 1965-05-19

Family

ID=10398096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3766461A Expired GB992319A (en) 1961-10-20 1961-10-20 Process for recovering tar phenols and bases from coal tar distillates containing the same

Country Status (1)

Country Link
GB (1) GB992319A (en)

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