Ash classifier

Details Ash classifier Ash classifier

1986-10-23

1987-10-20

Yuen, Henry C.

Furnaces

Ash receiving and handling devices

Fly ash disposers

2091391, 110245, F23J 100

Patent

active

047006366

ABSTRACT:
Apparatus is provided for withdrawing a stream of relatively static bed material from an operating fluidized bed reactor and gravity feeding it through a conduit to an exterior classifying chamber into which a downward flow of air is introduced. The airflow is turned in the classifier to move in an upward direction countercurrent to the flow of bed material. The velocity of the air is such that coarse bed material passes downwardly through the airflow and accumulates in the classifying chamber, while the fines are entrained in the upwardly moving airflow and both air and fines are introduced into the fluidized bed reactor.

REFERENCES:
patent: 2330793 (1943-09-01), Peebles
patent: 2708033 (1955-05-01), Thomas
patent: 2781300 (1957-02-01), Hoge
patent: 3397657 (1968-08-01), Tada
patent: 4598653 (1986-07-01), Stringfellow et al.

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