METHOD TO SUPPORT BURNING IN FURNACE AND METHOD TO CONVERT FURNACE OPERATING WITH AIR COMBUSTION INTO FURNACE THAT PARTIALLY OR FULLY OPERATES WITH OXYGEN COMBUSTION

摘要

FIELD: power engineering.;SUBSTANCE: method to provide for burning in furnace equipped with facilities of energy recuperation and burners, in which heat of gaseous combustion products is recuperated with the help of energy recuperation facilities, at that this recuperated heat is used to heat air. At least in part of burners, combustion of inflammable substance (4) and oxygen-enriched oxidant (3) is provided; at least some air (5), heated by means of energy recuperation facilities, is used to heat inflammable substance (4) and (or) oxygen-enriched oxidant (3), designed for burners, where combustion of inflammable substance (4) and oxygen-enriched oxidant (3) is applied. Concentration of oxygen makes more than 90% of volume in oxygen-enriched oxidant. At least in 10% of burners inflammable substance and oxygen-enriched oxidant are burnt. In all burners inflammable substance and oxygen-enriched oxidant are burnt. Using heat exchanger (6, 7) air (5), heated by energy recuperation facilities, is used to heat inflammable substance (4) and (or) oxygen-enriched oxidant, intended for burners (3), where combustion of inflammable substance (4) and oxygen-enriched oxidant is used (3). Furnace is a glass melting furnace. Burners, where combustion of inflammable substance and oxygen-enriched oxidant is used, are installed at both sides of furnace, at that air heated by energy recuperation facilities is used to heat inflammable substance and (or) oxygen-enriched oxidant, intended for all burners, where combustion of inflammable substance and oxygen-enriched oxidant is carried out.;EFFECT: invention makes it possible to provide for oxygen burning in furnace equipped with regenerators or recuperators, which recuperate heat of gaseous combustion products.;14 cl, 3 dwg