PLANT FOR PRODUCTION OF PETROLEUM NEEDLE COKE WITH DELAYED COKING Russian patent published in 2020 - IPC C10B55/00 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to oil refining, in particular to a plant for production of oil cake used in production of large-size graphitized electrodes for electric arc steel furnaces by delayed coking, and is aimed at weighting the coking raw material based on the boiling point temperature to increase coke yield and improve structural organization. Proposed plant comprises decant oil heating apparatus as initial raw material, secondary raw material formation column by mixing initial feedstock with recycle, reaction-heating furnace for secondary raw material heating, secondary material coking chamber for coke and distillate products production, distillation column for separation of distillate products of coking into hydrocarbon gas, gasoline, light and heavy coking gas oils and vat gas oil, absorber with mass exchange devices. Secondary raw material formation column is equipped with mass exchange devices and water vapour supply device located in its lower part. Upper part of the column is connected to the lower part of the absorber.

EFFECT: invention increases output of obtained coke and improves its microstructural organization due to weighting of secondary raw material and stabilization of its fractional composition.

1 cl, 1 dwg