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Phenol Treatment

Distinctive Features:


guaranteed high degree of purification at variable and higher feed-rates;


much longer catalyst life time vs. conventional catalysts;


possible catalyst regeneration.

Catalytic Removal of Organic Minor Impurities from Crude Phenol employs binary catalysts, one of which is a zeolite-containing catalyst. Each catalyst performs its own function and role in the phenol treatment process. One catalyst converts HA to deep condensation products forming no 2-MBF. Another catalyst (zeolite) is effective in high conversion of carbonyl containing compounds (inclusive of MO) and AMS. Employed catalysts are more thermally stable than traditional ion-exchange resins (IER) and operable at temperatures of hydro-extractive column bottom. For example, a first binary treatment catalyst has a lifetime of three years and zeolite catalyst has a lifetime of at least seven years unlike traditional IER employed by most manufacturers (the latter have 1-1.5 years lifetime and a much lower degree of phenol treatment compared to catalysts employed in ILLA’s process).

ILLA’s Process of Catalytic Removal of Organic Minor Impurities from Crude Phenol produces phenol product of highest quality, which may then be used for polycarbonate and/or resin production.



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