Since the amendment to the German Technical Instructions on Air Quality Control the waste gases from glass-kilns need to be precipitated. Dust collecting is done at high temperatures in the filter. In some cases spray absorption is also used for contaminant gas purification behind glass troughs.
|Typical design data||Unit of measure||Filter|
|Gas temperature||°C||180 – 200|
|Type of dust||Sodium sulphate, soda, borax, quartz|
|Residual dust content||mg/m³||< 10|
|Raw gas dust content||g/m³||10 – 25|
|Explosion protected design||not necessary|