Division 2
United Kingdom
BAT is to reduce the specific energy consumption by using one or a combination of the following techniques:
| Technique | Applicability |
|---|---|
| (i) Process optimisation, through the control of the operating parameters | The techniques are generally applicable |
| (ii) Regular maintenance of the melting furnace | |
| (iii) Optimisation of the furnace design and the selection of the melting technique | Applicable for new plants. For existing plants, the implementation requires a complete rebuild of the furnace |
| (iv) Application of combustion control techniques | Applicable to fuel/air and oxy-fuel fired furnaces |
| (v) Use of increasing levels of cullet, where available and economically and technically viable | Not applicable to the continuous filament glass fibre, high temperature insulation wool and frits sectors |
| (vi) Use of a waste heat boiler for energy recovery, where technically and economically viable | Applicable to fuel/air and oxy-fuel fired furnaces. The applicability and economic viability of the technique is dictated by the overall efficiency that may be obtained, including the effective use of the steam generated |
| (vii) Use of batch and cullet preheating, where technically and economically viable | Applicable to fuel/air and oxy-fuel fired furnaces. The applicability is normally restricted to batch compositions with more than 50 % cullet |