Artificial dye-stuffs; their nature, manufacture, and uses (1917)
Ramsey, Albert R. J, Weston, H. Claude (Hubert Claude) · London, Routledge; New York, Dutton · leaf 37
connected toa dephlegmator. The dephlegmator is a cast-ironcyhnder about 7 or 8 feet long and 2 feet 6 inches indiameter, provided internally with a tube plate about18 inches from either end, a number of copper tubesabout I inch in diameter being expanded into the tubeplates. Water is circulated… … Fig. 4. COAL AND COAL-TAR 23 uncondensed vapours conducted to a condenser andthence to a receiver from which the several fractionsare drawn off. In operation, the still is charged withthe light oil fraction obtained from the tar-still, thecontents of the still being then boiled by passing…
Dyes and dyeing
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