PRODUCTION OF BISPHENOL A PRILL

PURPOSE:To obtain bisphenol A prill with high mechanical strength stable granulation with a granulation column prevented from blockage. CONSTITUTION:A bisphenol A melt is dripped through the grating at the upper part of a granulation column, while a cooling gas is allowed to flow from the lower part...

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Bibliographische Detailangaben
Hauptverfasser:	NAGASHIMA HAJIME, MATSUYOSHI TADAAKI, YOSHIZUKA SHINJI, UEMURA FUMIHIKO, HAYASHIDA KIKUICHI, MORIYA NOBUO, NAKAHARA MITSUO, TOZAKI KATSUMI, YOSHIZU TAKESHI
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain bisphenol A prill with high mechanical strength stable granulation with a granulation column prevented from blockage. CONSTITUTION:A bisphenol A melt is dripped through the grating at the upper part of a granulation column, while a cooling gas is allowed to flow from the lower part upward to cool and solidify the droplets, thus obtaining the objective bisphenol A prill. In this case, the temperature of the cooling gas discharged via the upper part of the column is controlled within the range of 60-80 deg.C, or, the temperature of the cooling gas at the inlet of the column and/or the flow rate of the gas is controlled while maintaining the quantity of heat to be exchanged per weight of bisphenol A (Q-value) at a specified level.