Abstract:
The results of the chromatographic analysis of coal tar for the concentrations of phenols and their derivatives are given. It was shown that coal tar from AO Sary-Arka Spetskoks is characterized by a high concentration of phenols, which serve as a source material for organic synthesis. The possibility of applying ethanol and cavitation treatment to the extraction of phenols from the coal tar was established. The following optimum process conditions were found: ethanol concentration, 55–70%; duration, 5–7 min; the ratio ethanol: tar = 2: 1; and the temperature of the cavitation treatment of primary coal tar, 333 K. A diagram for the extraction-cavitation treatment of primary coal tar was proposed.
