SUBMERGED COMBUSTION MELTING EXHAUST SYSTEMS

A submerged combustion melting system (10, 110) includes a furnace (12) including a tank (16) with a floor (18), a roof (20), a perimeter wall (22), an interior I, burners (28) to melt glass feedstock into molten glass, a batch inlet (24), a molten glass outlet (26), and an exhaust outlet (30). An exhaust system (14, 114) is in fluid communication with the interior of the tank, and includes a flue (36, 136, 236) in fluid communication with the exhaust outlet. A refractory-lined hood (38, 138) may be in fluid communication with the flue, which may be fluid-cooled including fluid-cooled perimeter panels (52, 54, 56, 58, 122, 222) and/or lower and upper baffles (152, 154, 252, 254). The hood may include a protrusion (85) that protrudes into a downstream horizontal exhaust path and has an excurvate upper surface (85a) to streamline flow of exhaust gas through the hood to prevent gas recirculation and formation of condensate piles in the hood.