Process and device for introducing a powder into a reactor

Details Process and device for introducing a powder into a reactor Process and device for introducing a powder into a reactor

1991-06-28

1993-08-31

Schofer, Joseph L.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

422145, 422213, 422219, B01F 722

Patent

active

052406830

ABSTRACT:
The present invention relates to a process and a device for introducing a catalytically active powder into a reactor (20) for gas phase alpha-olefin polymerization. The device comprises a storage vessel (3) containing the powder, a metering valve (4) delivering metered quantities of the powder into an intermediate chamber (5) comprising at least one obstacle (6) separating an upper part (5a) of the chamber (5) comprising an auxiliary gas inlet (2a) from a lower part (5b) terminated by an outlet orifice (5c). A connecting pipe (18) connects the outlet orifice (5c) to a mixing device (8) situated on a conveying pipework (15) communicating with the reactor (20). The powder is introduced into the reactor in a dilute suspension form and in a more uniform rate.

REFERENCES:
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patent: 4684703 (1987-08-01), Wagner et al.
patent: 4687381 (1987-08-01), Dumain et al.
patent: 4703094 (1987-08-01), Raufast

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