Glass melting furnace

摘要

The present invention relates to a furnace (12) for melting heated glass using burners (13), wherein the combustion energy is at least partially produced by oxy-fuel combustion, and wherein at least a portion of the oxygen used is produced by separation, on a ceramic separation membrane (18), from a gaseous mixture including oxygen.

主权项

1. A glass melting furnace heated with burners, wherein:
combustion energy is produced at least partially by oxy-combustion, a portion of oxygen consumed in the burners is produced by separation through a ceramic separation membrane from a gaseous mixture comprising oxygen, the gaseous mixture is compressed and heated before the separation, the heating of the gaseous mixture before the separation results partly from the compression thereof and partly from a portion of heat of combustion fumes from the furnace, separated hot oxygen is conveyed directly to the burners, and for the heating of the gaseous mixture partly from heat of combustion fumes, said combustion fumes are passed into a first heat exchanger to increase the temperature of a heat-exchange fluid passing through said first heat exchanger, where said heat-exchange fluid is then passed through a second heat exchanger to heat the gaseous mixture passing through said second heat exchanger, where oxygen is thereafter extracted in the ceramic separation membrane.