Oxy-Fuel Burners for Tank
The fuel is fired without nitrogen in the applied oxidant (pure oxygen) (lower volumes of flue gases, less diluted) with oxygen quality >90%.
In general, oxy-fuel glass furnaces have the same basic design as recuperative glass melters, with multiple lateral burners and a limited number of exhaust port(s).Typically are only 4 to 6 burners per sidewall installed.
Burners from opposite sidewalls are preferably not placed in one line, but staggered in order not to produce hot spots. A complete oxy-fuel furnace is approximately 25-30% cheaper in comparison to an end fired furnace, and approximately 15-20% cheaper in comparison to a recuperative furnace.
Oxy-fuel melting can be a very effective technique for NOx abatement (see COMMISSION IMPLEMENTING DECISION of 28 February 2012 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for the manufacture of glass).
In case of economy and improvement of emission pollution pure oxy fuel can be applied. Replacement of regenerative firing by oxyfuel burners result in:
- App. 10 - 20% total fuel saving
- Better working environment – less noise, less heat from furnace
- No regenerator required.
- Lower emissions – NOx (-50%), CO2, particulates
- Lower emissions (particulates, NOx, HF, HCl …)
- Less heat loss through the exhaust system
- Less batch loss by the lower exhaust velocity, less dust emission
- The capacity of electrostatic precipitator can be reduced by 75%
- Flue gas channel area can be reduced
- Faster and more consistent melting; flexibility
- Better glass quality
- No significant capital investment required
Oxyfuel Burners - Feeder
If the energy consumption of the melter + refiner/distribution channel + feeder is assumed at 100%, then the ratio of energy consumption of a feeder depends on the glass temperature entering it and length of the feeder. In general this value is between 20 – 50%.
The results of applying oxyfuel burners at feeders are:
- Lower fuel consumption (up to -60%)
- Lower emissions (up to -80% NOx)•
- Better heat transfer by the 3 atom molecules taking place in the combustion - better heat distribution
- Improved temperature regulation and homogeneity of the glass
- Improved glass quality
- Low maintenance
- No blowers required for the combustion
- Faster responses
- Increased glass throughput
- Longer superstructure refractory life with volatile glasses
- Higher turndown ratios
- Option to switch off burners without a risk of back firing
Oxipyr - F
Oxipyr - F micro
Oxipyr - Flat
Oxipyr - Flex3
Oxipyr - P / P LON
Oxipyr - Burner Regulation:
Oxipyr - Advanced regulation
Oxipyr - Basic+, Basic regulation
Oxipyr - 400 regulation