Investigation of the process of coke formation with the introduction of specialized additives at tarp wismbraking installations

Based on the analysis of the use of known and developed additives to reduce coke formation in the process of tar visbreaking, sulfur-containing and phosphorus-containing additives were identified. The influence of sulfur-containing, phosphorus-containing compounds, developed reagents containing combined organic and inorganic compounds in their composition, on the process of tar coke formation during visbreaking has been studied. The process of tar coke formation in the process of visbreaking in the presence of DMDS, DMSO, DMS, TPP, TPPO in the amount of 5, 10, 15 ppm was studied; developed inhibitors of coke formation (IK-1, IK-2, IK-3) at a dosage of 5, 10 and 15 ppm. The study of the process was carried out on a laboratory delayed coking unit with appropriate temperature conditions. It has been shown that the use of dimethyl disulfide (DMDS), triphenylphosphine oxide (TPPO), developed reagents (IK-1, IK-2, IK-3) as coke formation inhibitors in the process of tar visbreaking contributes to an increase in the operating time of coils and furnace columns, and also reduce the pressure drop at the inlet and outlet of the furnaces.