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Title:
OUTSIDE PARTICLE CIRCULATING DEVICE FOR CIRCULATING FLUIDIZED BED REDUCING DEVICE
Document Type and Number:
Japanese Patent JPH09159371
Kind Code:
A
Abstract:

To provide an outside particle circulating device for a circulating fluidized bed reducing device, improving a partial collecting efficiency and treating a material having a high ratio of fine powder.

A circulating fluidized bed reducing device, consisting of a fluidized bed reducing device and an outside particle circulating device 7, is provided with a bypass pipeline, extracting a part of process gas out of a descending pipe from a third cyclone 12 connected to a second cyclone 9 connected to a first cyclone 8 connected to the gas outlet port of a fluidized bed reducing furnace 1. In order to change the non-circulating third cyclone 12 into a down blow type cyclone, the bypass pipeline, extracting a part of process gas out of the lower part of the third cyclone 12, is provided with a fourth cyclone while the bypass pipeline is provided with a flow meter and a flow rate regulating meter to control the amount of extracted gas.


Inventors:
Egashira, Tatsuhiko
Takamoto, Yasushi
Application Number:
JP1995000323333
Publication Date:
June 20, 1997
Filing Date:
December 12, 1995
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
C21B11/00; F27B15/12; F27D17/00; (IPC1-7): F27B15/12; C21B11/00; F27D17/00
Attorney, Agent or Firm:
小堀 益 (外1名)



 
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