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Pyrocatechol from low-temperature tar

Journal Article:

Abstract

A method for production and purification of pyrocatechol (I) from low-temperature carbonization effluents was described. Phenosolvan, a mixture of isobutyl, butyl, and amyl acetates, was used for extraction of I from the effluent. After removing most of the solvent by distillation, the separation was completed by batch vacuum distillation at 25 to 50 millimeter Hg. The 4th fraction, containing I 49.2, I homologues 31.1, o-cresol 6.8, xylenols 7.3, and higher boiling material and residue 5.6 percent, was treated in a purification pilot plant, which was described. This fraction was dissolved in an equal weight of C/sub 6/H/sub 6/, then cooled. I was crystallized out in a vacuum crystallizer, centrifuged, and washed with C/sub 6/H/sub 6/, dried in a rotating-plate drier and taken to storage. The purified I melted 100/sup 0/ to 102/sup 0/ and contained 4 to 8 percent homologues or other impurities. A further recrystallization raised its purity to 99.2 percent. Plant capacities and production costs are given.
Publication Date:
Jan 01, 1950
Product Type:
Journal Article
Reference Number:
EDB-80-081928
Resource Relation:
Journal Name: Petroleum (London); (United Kingdom); Journal Volume: 13
Subject:
01 COAL, LIGNITE, AND PEAT; COAL TAR; PROCESSING; PYROCATECHOL; PURIFICATION; CRYSTALLIZATION; DISTILLATION; PRODUCTION; SOLVENT EXTRACTION; AROMATICS; DEVELOPERS; EXTRACTION; HYDROXY COMPOUNDS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PHASE TRANSFORMATIONS; PHENOLS; POLYPHENOLS; SEPARATION PROCESSES; TAR; 010500* - Coal, Lignite, & Peat- Products & By-Products
OSTI ID:
5392171
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PETRA
Submitting Site:
TIC
Size:
Pages: 61-62
Announcement Date:

Journal Article:

Citation Formats

Lowenstein-Lom, W. Pyrocatechol from low-temperature tar. United Kingdom: N. p., 1950. Web.
Lowenstein-Lom, W. Pyrocatechol from low-temperature tar. United Kingdom.
Lowenstein-Lom, W. 1950. "Pyrocatechol from low-temperature tar." United Kingdom.
@misc{etde_5392171,
title = {Pyrocatechol from low-temperature tar}
author = {Lowenstein-Lom, W}
abstractNote = {A method for production and purification of pyrocatechol (I) from low-temperature carbonization effluents was described. Phenosolvan, a mixture of isobutyl, butyl, and amyl acetates, was used for extraction of I from the effluent. After removing most of the solvent by distillation, the separation was completed by batch vacuum distillation at 25 to 50 millimeter Hg. The 4th fraction, containing I 49.2, I homologues 31.1, o-cresol 6.8, xylenols 7.3, and higher boiling material and residue 5.6 percent, was treated in a purification pilot plant, which was described. This fraction was dissolved in an equal weight of C/sub 6/H/sub 6/, then cooled. I was crystallized out in a vacuum crystallizer, centrifuged, and washed with C/sub 6/H/sub 6/, dried in a rotating-plate drier and taken to storage. The purified I melted 100/sup 0/ to 102/sup 0/ and contained 4 to 8 percent homologues or other impurities. A further recrystallization raised its purity to 99.2 percent. Plant capacities and production costs are given.}
journal = {Petroleum (London); (United Kingdom)}
volume = {13}
journal type = {AC}
place = {United Kingdom}
year = {1950}
month = {Jan}
}