tar

The tar oxidation process has been studied at 523 K, air flow rate of 2.0; 2.5 and 5.0 h-1 and process time of 6, 9 and 12 h in the presence of 2.5; 5.0 and 7.5 mas % (to calculate for the raw material)of petroleum resin with fluorine atoms. The tar is the residue of black oil vacuum distillation obtained from the oils of Western-Ukrainian fields. The effect of process conditions on the characteristics of obtained bitumen has been determined. The structural-group composition of blown bitumen has been examined.

The oxidation process of the paraffin gas condensate residual has been studied to obtain road bitumen. The investigation results concerning the residual joint oxidation with extract of oil selective treatment and low-paraffin tars are presented. It has been determined that bitumen obtained from the residual of paraffin gas condensate treatment does not meet the requirements setting for road bitumen. It is recommended to use the residuals for the production of building or covering bitumen.