METHOD OF PRODUCING ELECTRODE PITCH FROM HEAVY PYROLYSIS RESIN Russian patent published in 2025 - IPC C10C1/16 C10C3/06 

FIELD: oil refining industry.

SUBSTANCE: invention relates to a method of producing petroleum electrode pitch from a heavy pyrolysis resin, involving gradual heating of heavy petroleum cracking residues in batch stills with subsequent holding thereof at thermo-polycondensation temperature. Cube with loaded heavy pyrolysis resin is pressurized with nitrogen to pressure from 0.70 to 0.80 MPa and heated to temperature of raw material from 405 to 415 °C at rate of 100 to 120 °C per hour, after heating to temperature of 405-415 °C, heating rate is reduced from 1.5 to 1.8 °C per hour and heated from 415 to 425 °C, during the heating process, the gases released during the cracking process are continuously removed so that the pressure in the still is maintained from 0.70 to 0.80 MPa, then heating is stopped and cube is cooled to liquid temperature in cube from 370 to 380 °C and draining pressure in cube to atmospheric pressure, obtained pitch is cooled to 180 °C and discharged from the still.

EFFECT: obtaining petroleum electrode pitch based on heavy resin of pyrolysis of gas-gasoline feedstock.

1 cl, 4 tbl, 11 ex