New Oxy-Combustion Crown Design For Efficient Flue Gas Heat

Oxy-combustion in glass melting has the advantage to create a reduced amount of flue waste gas compared to aero-combustion and this gives potential benefits of reduced energy consumption and reduced emissions. However, the use of oxygen is expensive and with ever increasing efficiencies of regenerative furnaces the economics of oxy-fuel can be questionable. When oxy-fuel is considered the favourable technology, further improvements in energy efficiency are welcome. This paper reviews the history of associated technologies, the basis of HRA design (Heat Recover Area), how it was derived, and finally information from a recent installation in Europe.