Importance

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Abstract

A method of making glass is disclosed in which a flue gas that comprises water vapor is exhausted from a submerged combustion melter that is operated to discharge combustion products into a glass melt that results from the combustion of a mixture of hydrogen gas and an oxidant gas. Heat may be recovered from the exhausted flue gas to heat batch feedstock material fed to the melter, or water vapor in the exhausted flue gas may be condensed and returned to the melter for cooling purposes, or both. A glass-melting system is also disclosed that includes a submerged combustion melter, a batch feedstock material preheater in fluid communication with the submerged combustion melter and configured to heat batch feedstock material, a condenser in fluid communication with the batch feedstock material preheater, and a cooling water reservoir in fluid communication with the condenser and the submerged combustion melter.

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First Claim