Patent ID: 6077920
Filing Date: 2000-06-20
Classification: B01J,C08F,Y10S

Abstract:
A process for feeding a particulate material to a polymerization reactor comprising(i) introducing the particulate material to one or more pressurizing vessels wherein each of the pressurizing vessels has a bottom hopper opening to vessel diameter ratio equal to or larger than 0.2:1;(ii) pressurizing the particulate material in one or more of the pressurizing vessels to a pressure equal to or greater than the pressure of polymerization zone of the reactor with a pressurization gas introduced from above the top surface of the particulate material to form a compressed mass of particulate material; and(iii) introducing the compressed mass of particulate material from one or more of the pressurizing vessels into the polymerization reactor directly or into the cycle line and, thence, into the reactor.