COMBUSTION CONTROL METHOD FOR COKE OVEN

PURPOSE:To control oxygen concentration in combustion exhaust gas, by a method wherein the set value of an air-fuel ratio is calculated moment by moment by the use of a model formula during a specified time which elapses after completion of switching of fuel gas to control a flow rate of the air. CO...

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Bibliographische Detailangaben
Hauptverfasser:	HATSUTORI YAHEIJI, SHIBAHARA YASUTAKA, EZAKI TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES HEATING LIGHTING MECHANICAL ENGINEERING METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL REGULATING OR CONTROLLING COMBUSTION WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To control oxygen concentration in combustion exhaust gas, by a method wherein the set value of an air-fuel ratio is calculated moment by moment by the use of a model formula during a specified time which elapses after completion of switching of fuel gas to control a flow rate of the air. CONSTITUTION:At a point of time when switching of fuel gas in the combustion chamber in a coke oven is completed, i.e., during a specified time which elapses after a time t4 when switching of fuel gas to other combustion chamber is completed, an air-fuel ratio is calculated moment by moment by the use of a model formula. A flow rate of the air is controlled to provide the calculated air-fuel ratio. This enables oxygen concentration in exhaust gas which has been increased by the time the switching of fuel gas is completed to be decreased to a range within a desired value in a short time.