A method of producing molten glass for the production of shaped glass articles and a regenerative furnace therefore

A method of operating a regenerative glass furnace (10) for melting flat glass so as to minimise emission of carbon monoxide (CO) in waste gases leaving the furnace (10), the furnace (10) including a melting chamber (12) and regenerators (13,14) which act as heat exchangers, each regenerator (13,14) containing a checkerwork structure (15,15'), the method comprising providing air and supplying fuel to the melting chamber (12) of the furnace (10) to ensure that glass of a required quality at a required production rate is obtained, characterised in that the regenerators (13,14) are sealed and fuel in excess of that required to ensure the glass quality and production rate is supplied at least to the melting chamber (12) or the sealed regenerators (13,14) such that the waste gases in the sealed regenerators (13,14) contain combustible material including CO, and removing the CO from the waste gases in the regenerators (13,14) by combusting CO downstream of the checkerwork structure (15,15') of the regenerators (13,14) at a temperature of greater than about 650 DEG C.