EXPERIENCE IN OBTAINING PRODUCTS OF THE DELAYED COKING PROCESS USING VISBREAKING RESIDUE AND CATALYTIC CRACKING HEAVY GAS OIL AS FEEDSTOCK

The authors have analyzed the literature data on delayed coking process. There have been considered the following: feedstock bases for petroleum coke production; implementation and development of delayed coking process; the types of products obtained. It has been revealed, that the main feedstocks for the process are heavy fractions of oil: fuel oil, semihudron, tar, various heavy oil residues, etc.In order to expand the feedstock base, the authors conducted laboratory studies concerning the use of visbreaking residue and catalytic cracking heavy gas oil in the coking process. During the research: raw materials (visbreaking residue and catalytic cracking heavy gas oil) were analyzed; the coking process was carried out; the results of obtaining petroleum coke from visbreaking residue and catalytic cracking heavy gas oil were compared.It has been proved that visbreaking residue and catalytic cracking heavy gas oil can be involved in the process of delayed coking. It has been revealed that the best option for obtaining coking products is precisely catalytic cracking heavy gas oil.