GB443285A - An improved method for the production of pure phenols from lignite tar, shale tar and low temperature tars - Google Patents

An improved method for the production of pure phenols from lignite tar, shale tar and low temperature tars

Info

Publication number
GB443285A
GB443285A GB1609434A GB1609434A GB443285A GB 443285 A GB443285 A GB 443285A GB 1609434 A GB1609434 A GB 1609434A GB 1609434 A GB1609434 A GB 1609434A GB 443285 A GB443285 A GB 443285A
Authority
GB
United Kingdom
Prior art keywords
tar
low temperature
pure
lignite
shale
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
GB1609434A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1609434A priority Critical patent/GB443285A/en
Publication of GB443285A publication Critical patent/GB443285A/en
Expired legal-status Critical Current

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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

Pure phenols are obtained from lignite tar, shale tar or low temperature tar by heating the tar oil to at least 300 DEG C. during or prior to fractionation so as to effect a mild cracking, treating the oils with soda lye, oxidizing the lye solution and then passing steam through it while the temperature of the liquid is increased to about 105--120 DEG C., so as to remove impurities, and finally recovering the pure phenols by acidifying the liquid. The oxidation may be effected by air or by sodium hypochlorite, and resinous byeproducts may be recovered. In examples, tar oil derived from low temperature tars is fractionated, the distillate treated with sulphuric acid, and a solution of the product in aqueous caustic soda is oxidized, steamed, and then acidified to yield pure cresols and an asphaltic residue. Specifications 355,445 and 363,330 are referred to.
GB1609434A 1934-12-14 1934-12-14 An improved method for the production of pure phenols from lignite tar, shale tar and low temperature tars Expired GB443285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1609434A GB443285A (en) 1934-12-14 1934-12-14 An improved method for the production of pure phenols from lignite tar, shale tar and low temperature tars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1609434A GB443285A (en) 1934-12-14 1934-12-14 An improved method for the production of pure phenols from lignite tar, shale tar and low temperature tars

Publications (1)

Publication Number Publication Date
GB443285A true GB443285A (en) 1936-02-26

Family

ID=10071080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1609434A Expired GB443285A (en) 1934-12-14 1934-12-14 An improved method for the production of pure phenols from lignite tar, shale tar and low temperature tars

Country Status (1)

Country Link
GB (1) GB443285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248814A (en) * 1991-09-13 1993-09-28 Eniricerche S.P.A. Process for producing regenerated humic acids from coal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248814A (en) * 1991-09-13 1993-09-28 Eniricerche S.P.A. Process for producing regenerated humic acids from coal

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