Abstract
1. A one-channel, two-stage process has been developed for the hydrogenative purification of distillate fractions from liquid pyrolysis products, using a palladium catalyst in the first stage, an aluminum-cobalt-molybdenum catalyst in the second stage, and a hydrogen pressure of 40 atm. 2. The use of a low-temperature palladium catalyst in the first stage permits a simplified technology and an improved product quality; the products can be used to the production of C6-C8 aromatic hydrocarbons. 3. It has been shown that it is possible to separate benzene, toluene, and total xylenes in amounts comprising 98.0, 97.0, and 92.0% of the theoretical, respectively, from a hydrofined pyrocondensate (containing 65.7% of aromatic hydrocarbons), by means of extraction with diethylene glycol and subsequent distillation.
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