METHOD OF PROCESSING LIQUID PYROLYSIS PRODUCTS INTO AROMATIC HYDROCARBONS Russian patent published in 2005 - IPC

Abstract RU 2266944 C1

FIELD: petrochemical processes.

SUBSTANCE: liquid pyrolysis products are processed to recover C₆-C₁₁-fraction, which is then separated into C₆-C₈ and C₉-C₁₁-fractions. C₆-C₈-Fraction is subjected to catalytic hydrostabilization and hydrofining. C₉-C₁₁-Fraction is hydrostabilized in presence of catalyst and then processed to isolate C₁₀-C₁₁-fraction. C₆-C₈ and C₁₀-C₁₁-fractions are combined at specified proportion and resulting mixture is subjected to thermal hydrodealkylation. Desired benzene and naphthalene products are recovered from hydrodealkylation product via rectification. High-purity benzene is obtained after fine catalytic posttreatment.

EFFECT: increased yield of desired products and service time of hydrostabilization catalyst.

2 cl, 1 dwg, 4 tbl, 10 ex

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RU 2 266 944 C1

Authors

Amitin A.V.

Elin O.L.

Krylova E.K.

Lakhman L.I.

Mjachin S.I.

Prokopenko A.V.

Dates

2005-12-27—Published

2004-05-12—Filed