By Charles H. Drummond III
This factor features a choice of papers provided on the 71st convention on Glass difficulties, October 19-20, 2010 on the Ohio kingdom collage, Columbus, Ohio. themes comprise glass melting; glass technological know-how, defects; defense; refractories; recycling; controls; and uncooked fabrics.
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Additional resources for 71st Glass Problems Conference. Ceramic Engineering and Science Proceedings, Volume 32, Issue 1
A long-term test of the new system at a container glass furnace was planned and performed. The project endured for about 2 years. The basic data of the furnace were: • • • • • • • tonnage of 320 to/d regenerative U-flame 2 doghouses 17% cullet addition 3% batch humidity 4450 MJ/ton actual energy consumption 8% electric boosting Thus, it can be said that this shows an example of a typical European container glass furnace- however with a very low cullet percentage. So the conditions were a challenging test for the new system, as with existing systems, an operation with such low cullet content would have not been possible and would have resulted in severe clogging and caking problems that finally would have stopped the material flow and the whole system.
In the final gas cleaning stage, furnace exhaust gas NOx emissions are reduced in the Selective Catalytic Reduction (SCR) unit. Aqua Ammonia is injected upstream of the SCR and NOx is reduced as it reacts with the aqua ammonia on the surface area of the catalyst bed. The paper describes the AQC plant supplied by GEA Bischoff, and performance data are given. It should be noted that the NOx reduction stage is the first application in the US. 39 Integrated Air Quality Control System for Float Glass Furnace BACKGROUND After 30 years of production, Guardian Industries Corp.
It is always a concern how the exhaust port reduction would impact the furnace operation. In this typical conversion, the temperature inside the furnace showed little dependence on the size deduction from 50% to 78% (Figure 11). Figure 11 : Impact of exhaust port on furnace operation. SUMMARY AND CONCLUSIONS The conversion of FGI's fiber-glass furnace from air fuel to oxy-fuel combustion was a great success. The post-conversion plant data showed a 50% fuel saving, which is consistent with the modeling prediction of 45% of fuel saving.