Oxyfuel Fired Forehearths in Fiberglass Production

Especially in fiber manufacture the forehearths are the second larger energy consumers after the furnace (may use up to 40% of total fuel use). Similar to oxy-fuel firing in furnaces, the use of oxygen may reduce fuel use and emissions. A consortium of glass companies and suppliers, led by Owens Corning, was formed to develop and demonstrate oxy/fuel combustion technology for the forehearth of a fiberglass melter, to demonstrate the viability of this energy saving technology, as a D.O.E. sponsored project. The field tests demonstrated significant energy saving potential with reasonable payback times (Mighton, 2007. p.6). This technology is currently being field-tested but was not commercialized as of 2008 (

Development Status Products
Demonstration
Fiber glass

Oxyfuel Fired Forehearths in Fiberglass ProductionCosts & Benefits

Parent Process: Conditioning and Forming
Energy Savings Potential

In two different plant tests, the technology has shown to reduce foreheart energy consumption by 56% and 64%, saving 81 TJ/y of natural gas (Mighton, 2007. p.6).

CO2 Emission Reduction Potential

In the test plants, the system eliminated 4500 tons/yr of CO2 emissions (Mighton, 2007. p.6).

Costs

Estimated payback time is 2.2 years (Mighton, 2007. p.6).

Oxyfuel Fired Forehearths in Fiberglass Production Publications

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