METHOD FOR OBTAINING RAW MATERIAL FOR PRODUCTION OF CARBON BLACK Russian patent published in 1996 - IPC

FIELD: reprocessing of liquid products. SUBSTANCE: method involves conducting rectification of hydrocarbon pyrolysis liquid products in primary fractionation column and separating low-boiling components in the form of distillate; cooling and condensing distillate and separating pyrolysis gas from pyrolysis condensate and discharging heavy pyrolysis resin from lower part of column, with fraction of reprocessing of pyrolysis condensate 110-360 C of hydraulic dealkylation of xylene and toluene mixture being used as refrigerant in an amount of 10-22% by weight of base product. At the outlet of rectification column, bottom product of column is mixed with heat polymerization fraction of light pyrolysis resin with boiling temperature of 180-440 C, which is taken in an amount of 5-15% by weight of base product. EFFECT: increased efficiency and improved quality of raw material. 1 dwg, 2 tbl