PREHEATING GLASSMAKING MATERIALS WITH RADIATIVE HEAT TRANSFER

摘要

Heat in a stream (5) of combustion products obtained from a glassmelting furnace (3) heated by oxy-fuel combustion is passed to incoming glassmaking materials (9) in a heat exchanger (7) without requiring reduction of the temperature of the stream yet without causing softening of the glassmaking material. Hot combustion products enter the heat exchanger (7) at a temperature of at least 1800°F and at least partially heat the glassmaking materials by direct radiative heat exchange.