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Determination of phenol in tar

Journal Article:

Abstract

During low-temperature carbonization of lignite, the phenols and other oxygenated compounds appear both in the aqueous-process liquor and in the tar. Measurements of these oxygenated components resulting from low-temperature carbonization may serve as a parameter for the classification of lignites. However, such measurements are complicated by the instability of the tar and the complex nature of some of the acidic substances. Difficulties with the previous methods of analysis are reviewed. The present method outlines separation of aqueous-process liquor from lignite tar in a Fischer retort, followed by determination of phenols and fatty acids in the tar phase. The jacketed tar receiver is washed with 300 milliliter xylol and treated with aqueous caustic washes. Neutral oils are separated from the aqueous alkali solution. It is then extracted with ether and finally acidified with HCl. Solids are filtered off, and phenols and fatty acids are separated by Na/sub 2/CO/sub 3/ solution.
Publication Date:
Jan 01, 1955
Product Type:
Journal Article
Reference Number:
EDB-80-026271
Resource Relation:
Journal Name: Freiberg. Forschungsh., A; (German Democratic Republic); Journal Volume: 36
Subject:
01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COAL TAR; CHEMICAL COMPOSITION; PHENOLS; GRAVIMETRIC ANALYSIS; SEPARATION PROCESSES; CARBONIZATION; CHEMICAL ANALYSIS; LIGNITE; ORGANIC OXYGEN COMPOUNDS; AROMATICS; BROWN COAL; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; COAL; DECOMPOSITION; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROXY COMPOUNDS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; TAR; 010600* - Coal, Lignite, & Peat- Properties & Composition; 010500 - Coal, Lignite, & Peat- Products & By-Products; 400102 - Chemical & Spectral Procedures
OSTI ID:
5669264
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: FFRAA
Submitting Site:
TIC
Size:
Pages: 82-94
Announcement Date:

Journal Article:

Citation Formats

Dierichs, A, and Heinichen, G. Determination of phenol in tar. Germany: N. p., 1955. Web.
Dierichs, A, & Heinichen, G. Determination of phenol in tar. Germany.
Dierichs, A, and Heinichen, G. 1955. "Determination of phenol in tar." Germany.
@misc{etde_5669264,
title = {Determination of phenol in tar}
author = {Dierichs, A, and Heinichen, G}
abstractNote = {During low-temperature carbonization of lignite, the phenols and other oxygenated compounds appear both in the aqueous-process liquor and in the tar. Measurements of these oxygenated components resulting from low-temperature carbonization may serve as a parameter for the classification of lignites. However, such measurements are complicated by the instability of the tar and the complex nature of some of the acidic substances. Difficulties with the previous methods of analysis are reviewed. The present method outlines separation of aqueous-process liquor from lignite tar in a Fischer retort, followed by determination of phenols and fatty acids in the tar phase. The jacketed tar receiver is washed with 300 milliliter xylol and treated with aqueous caustic washes. Neutral oils are separated from the aqueous alkali solution. It is then extracted with ether and finally acidified with HCl. Solids are filtered off, and phenols and fatty acids are separated by Na/sub 2/CO/sub 3/ solution.}
journal = {Freiberg. Forschungsh., A; (German Democratic Republic)}
volume = {36}
journal type = {AC}
place = {Germany}
year = {1955}
month = {Jan}
}