Patent ID: 6463864
Filing Date: 2002-10-15
Classification: C10J,C10K,C21C,C22B,F23G,F23L,F27B,Y02E,Y02P

Abstract:
A gasification and melting furnace for wastes comprising: a vertical furnace body and wherein wastes are burnt, organic matters contained in the wastes are gasified and recovered as an energy gas, and at the same time ash and metals contained in the wastes are recovered as melts, said furnace including a gas outlet, a molten slag/metal outlet, a wastes inlet, a furnace center lance, an upper tuyere, a lower tuyere, a position measuring device for measuring the position of an upper end surface of wastes introduced into the furnace, and an intra-furnace temperature measuring device, said gas outlet being formed in an upper portion of the furnace, said molten slag/metal outlet being formed in a lower portion of the furnace, said wastes inlet being formed in a position between said molten slag/metal outlet and said gas outlet, said furnace center lance being disposed in the upper portion of the furnace vertically movably along the axis of the furnace so as to blow off a combustion sustaining gas downward into the furnace, said upper tuyere being disposed at one or more stages in a furnace wall portion positioned between said wastes inlet and said gas outlet so that an angle at which the combustion sustaining gas is blown off is displaced from the furnace axis direction, and the lower tuyere being disposed at one or more stages in a furnace wall portion positioned between said wastes inlet and said molten slag/metal outlet and being projected into the furnace in a direction in which the combustion sustaining gas or both combustion sustaining gas and fuel are blown off toward the furnace axis.