Title: Apparatus for equalizing top gas pressure in a blast furnace

Abstract: An apparatus for equalizing top gas pressure exerted on the bottom surface of the large bell operating in the large bell hopper in a top closing device for a blast furnace, so as to enable opening of the large bell for the feeding of charge therethrough during operation of the blast furnace of any top gas pressure, including a venturi scrubber, located at the top or in the vicinity of the blast furnace, connected by ducts to the uptake or other gas main for furnace top gas, and a separator, mounted at the top or in the vicinity of the blast furnace, connected by ducts to the venturi scrubber and large bell hopper, which elements scrub the furnace top gas and direct scrubbed top gas into the large bell hopper, so as to exert equalizing pressure on the large bell with scrubbed top gas, and further including an ejector, mounted in the venturi scrubber, which maintains a continuous flow of scrubbed top gas into the large bell hopper, so as to maintain equalizing pressure therein.

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Inventors: Pike, Daniel E. (Harrington Park, NJ, US)

Application Number: 821552
Filing Date: 1977-08-26
Publication_date: 1980-04-08
Assignee: Air Pollution Industries (Englewood, NJ)
Primary Class(es): 266/147 266/159
Other Classes:
US Patent Ref:

2702699	Feb, 1955	Kinney	266/147.
3041059	Jun, 1962	Powell	266/147.
3045996	Jul, 1962	Rice	266/147.
3297432	Jan, 1967	Moh, Jr.	266/89.
3343825	Sep, 1967	Tsutsumi et al.	266/89.
3735970	May, 1973	Genge	266/156.
3841061	Oct, 1974	Pike	261/DIG.
3877488	Apr, 1975	Baturay et al.	261/DIG.
4057602	Nov, 1977	Kolm	261/DIG.

Other Refs: 47-44405

Sep, 1972	JP

Primary Examiner: Bell, Paul A.
Assistant Examiner:
Attorney: Sommers & Sommers