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China Suppliers Factory: Regenerative End Fired Furnace for Continuous Melting and Low Energy Glass Production
Description
If sufficiently dimensioned, the regenerators effect heat recovery of the melting end firing and thus ensure an optimal reduction of energy consumption of the glass melting process. Slightly larger regenerators than necessary are an investment for the future, reducing maintenance effort and common energy consumption increase due to ageing. Additionally this allows a furnace enlargement at the next furnace repair with reduced glass-to-glass time and costs, when reusing the basic design and lower part of the regenerator.
By designing the ports and superstructure properly very low emission values in respect of NOx and CO2 can be achieved. Since there is only one alternating flame in glass flow direction, its optimal adjustment is crucial for glass melting process. After furnace startup the first setting is usually done by experienced REFTECH® personnel for combustion optimization, ensuring an optimal melting performance from the start.
A weir wall built into the bottom of the melting end, also called barrier, and a deep refining part increase flexibility and glass quality.
The wall supports the convection in the glass bath, which improves melting. Additional electric boosting improves furnace flexibility and is advantageous in case of coloured glass production.
Additional lances or burners at the furnace sidewall can be mounted in order to lower NOx emissions by staged combustion or increase melting capacity by oxy boosting. Most common is the application of a pressurized air lance in order to lower NOx and generally improve melting. This technology is known as gg ENOx and can be applied also while furnace operation. It is most suitable to improve furnaces not showing a good performance.
Features
1
Low energy consumption
2
Low emission values
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High flexibility in case of load change
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High specific melting output
5
Long life
Frequently Asked Questions
How do regenerators help in reducing energy consumption?
Sufficiently dimensioned regenerators effectively recover heat from the melting end firing. This process optimizes the energy efficiency of the glass melting and prevents the typical increase in energy consumption caused by system ageing.
What are the benefits of designing slightly larger regenerators?
Slightly larger regenerators reduce long-term maintenance efforts and allow for future furnace enlargement during repairs. This reuse of the basic design and lower regenerator parts reduces both glass-to-glass time and overall costs.
How can NOx and CO2 emissions be minimized in the furnace?
Low emission values are achieved by properly designing the ports and superstructure. Additionally, technologies like staged combustion via sidewall lances or pressurized air lances (gg ENOx) can be implemented to further lower NOx.
What is the role of a weir wall and electric boosting in the melting process?
A weir wall (or barrier) built into the bottom of the melting end supports convection in the glass bath, which improves melting and glass quality. Electric boosting further increases furnace flexibility, especially for coloured glass production.
What is gg ENOx technology and when is it applied?
gg ENOx is a technology that uses a pressurized air lance to lower NOx emissions and improve melting. It can be applied during active furnace operation and is highly suitable for upgrading underperforming furnaces.