METHOD FOR RECOVERING GAS WHEN OPERATING DEPHOSPHORIZATION IN EXHAUST GAS TREATMENT FACILITY FOR CONVERTER FOR DECARBURIZE-BLOWING

PROBLEM TO BE SOLVED: To provide a method for recovering generated gas as valuable gas in unburnt as it is state without increasing blowing oxygen amount and auxiliary raw material prescribed in dephosphorizing operation, i.e., without charging new material into a converter for increasing the genera...

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Bibliographische Detailangaben
Hauptverfasser:	SAKUMA KENGO, ARAI YUKIO, FUJIKURA NOBUYUKI, IZAWA TOMOO, KYOZUKA TOSHIKATSU, IWASE MASAKAZU, YOKOYAMA TAKASHI, INOUE KEN, YAMAMOTO SHUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OVENS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RETORTS TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for recovering generated gas as valuable gas in unburnt as it is state without increasing blowing oxygen amount and auxiliary raw material prescribed in dephosphorizing operation, i.e., without charging new material into a converter for increasing the generated gas amount by surely performing pressure control in the furnace when the dephosphorizing operation is applied, in exhaust gas treatment facility in the converter for decarburize-blowing. SOLUTION: When the dephosphorizing operation is applied in the exhaust gas treatment facility 2 in the converter for decarburize-blowing, the control range of a control damper 21 for pressure in the furnace, is widened to a low blasting amount range by water-sealing a part of the control damper 21 as a variable throat type venturi-scrubber in a secondary dust collector 10, and the generated gas from the converter 1 is recovered in unburnt state as it is through the control damper 21 for pressure in the furnace.