METHOD OF PREVENTION OF DIENE HYDROCARBON THERMOPOLYMERIZATION Russian patent published in 1995 - IPC

Abstract RU 2030375 C1

FIELD: chemical technology. SUBSTANCE: method involves addition of inhibitor containing hydrogenated C₉-fraction of pyrocondensate and tert.-butylpyrocatechin at the mass ratio (0.1-5):1 at concentration 0.01-1.0 wt. -% per initial hydrocarbon mixtures feeding into depropanization and deethanization column for separation. Method is used for prevention of thermopolymerization of diene hydrocarbons in columns of depropanization and deethanization in the process of separation of pyrolysis products by multistep rectification. EFFECT: improved method of thermopolymerization prevention. 1 tbl

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RU 2 030 375 C1

Authors

Borejko N.P.

Grigorovich B.A.

Mitrofanov A.I.

Jafizova V.P.

Dates

1995-03-10—Published

1991-05-12—Filed