Study of the Mechanism of Coke Formation of Oil Residue and Coal Raw Materials

Abstract

This thesis examines how temperature affects the coke obtained from coal pitch and oil residue. The types of coke suitable for use as electrodes and anodes have been identified. A review of existing technologies capable of solving problems with the use of coal tar pitch has been conducted. Studies and experiments were conducted on the coking of heavy feedstock with different chemical composition (HGO FCC, tar and coal pitch). Three experiments were conducted using each feedstock (FCC, tar, coal pitch) for a period of 5 hours. To find out the effect of residence time on the coking, three sets of experiments for each feedstock were performed by first heating the samples for 4 hours to the set temperature and maintaining this temperature for another 5hours (9 hours in total). The dependence of the heating mode of the coking chambers on the material balance was studied. Samples of the coke formed from the coking were studied at the laboratory to determine the possibility of using them as anode in the aluminum industry and electrode in steel industry. The relevance of the work is explained by the good applicability of the coking process both for processing heavier types of oil raw materials, increasing the depth of selection of light distillate fractions.