Abstract
The extraction of benzene, toluene, and xylene (BTX) from coke-oven gas is a profitable enterprise. Many formulas have been proposed for optimization of this process. However, in benzene distillation currently, reflux is not added to the wash oil but sprayed into the column. Therefore, the influence of individual parameters—in particular, the temperature of the fractionating column—must be considered in more detail. In the present work, we employ the regression equations derived for the cycles of BTX removal from coke-oven gas and the distillation of wash oil. The equations express the relation between the response functions (the content of BTX in the purified gas, the content of BTX in the distilled oil, the loss of wash oil with the purified gas, and the loss of wash oil with raw benzene) and the basic parameters of absorption and distillation.
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