OPERATION CONTROL METHOD AND APPARATUS FOR MELTING FURNACE

摘要

A method and apparatus for operation control of a melting furnace (1) provided with an inlet (2) for burned ash (6), a cinder notch (3) for molten slag (7), and a heat source (9) for heating the supplied burned ash. The method comprises the step of shooting with a television camera (5) the vicinity of the surface of the molten slag (7) heated by the heat transferred from the heat source to obtain an electronic image thereof; the step of differentiating a high temperature area in the electronic image having a temperature of not lower than a prescribed temperature (1300 ~C) from a low temperature area having a temperature below the prescribed temperature; and the step of controlling the heat quantity given by the heat source to the burned ash so as to set the area of the differentiated high temperature area to a prescribed value. The television camera (5) is provided with a relay lens (4) and arranged so as to substantially align the surface part of the molten slag (7), to which heat is transferred from the heat source (9), with the center of the image.