| abstract |
The invention relates to the field of petrochemistry, namely, to obtain deresined Naftalan oil, and can be used for the treatment of skin, neurological, surgical, gynecological, urological and other diseases. The objective of the invention is to increase the efficiency of the method of obtaining deresined naphthalene, reducing the consumption of the adsorbent, increasing the yield of active naphthenic hydrocarbons, improving the environment, using the waste of naphthalan oil. The task is achieved by the fact that heated to 150 ° C crude naphthalan oil is subjected to diffusion distillation under vacuum by passing dry water vapor heated to 230 ° C followed by adsorption purification of the obtained naphthenic fraction 190-220 ° C with silica gel, with a ratio of naphthenic fraction and adsorbent 1 : 0.12 by weight, at a cleaning temperature of 60 ° C. |