FIELD: petrochemical processes.
SUBSTANCE: styrene-containing fraction is subjected to rectification along with 0.0001-0.5 ppm of additive improving quality of styrene, said additive being tetrakis(dialkylsulfamoyl)phthalocyanine salt of group I and/or II, and/or III, and/or V. Additive is introduced in the form of solution in aromatic hydrocarbon into preliminary styrene recovery column and/or into styrene recovery column, and/or into styrene storage tank.
EFFECT: traduced losses of styrene during recovery, storage, and transportation.
3 cl, 1 tbl, 15 ex
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