The oxyfuel combustion technology of glass melting furnace is to use pure oxygen gas with a purity of 90%-100% as a combustion aid and fuel for combustion during the glass melting process, which can achieve high efficiency, energy saving, emission reduction, and environmental protection comprehensive benefits.
Advantages of oxyfuel combustion:
1. The quality of glass melting is good, because when oxyfuel is burned. The content of H2O in the combustion product is as high as about 50%, which increases the OH content in the glass liquid, reduces the viscosity of the glass, and is conducive to clarification and homogenization. The flame does not change phase, the temperature is stable, and the flame blackness is large and the radiation capacity is strong. The combustion products stay in the kiln for a long time, which can increase the glass liquid temperature by about 100℃ and the melting capacity by about 10% compared with the air combustion kiln.
2. The total amount of combustion products is greatly reduced, which reduces the heat taken away by the exhaust gas and has obvious energy-saving effect. And there are only CO2 and H2O in the combustion products, which reduces NO 2 emissions and reduces pollution to the environment. Achieve the effects of energy saving, emission reduction, and environmental protection.
3. The construction cost of the oxyfuel kiln is low and the service life is long. The all-oxygen kiln has no regenerator, but only a melting part structure, which occupies a small area and has low kiln investment cost. The flame of the all-oxygen kiln is sprayed at the bottom of the fuel with all-oxygen combustion-supporting gas, so the combustion temperature at the bottom of the flame is very high, and the temperature at the top of the flame is relatively low, which plays a great role in protecting the kiln arch and prolonging the service life of the kiln.
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