Hard coal or coke is ground to fuel in many sectors of industry. Dust properties, product fineness, gas humidity, risk of explosion and, not least, a high degree of plant availability are the tough requirements to be satisfied by the filter media.
The changeover from high-quality hard coal to economically priced petcoke has already caused problems often in existing plants. The filter media used here are customised and made of PES or PAN or also often of PES/PAN-Multitex needlefelt.
|Case history: Coal grinding plant||Case history: Coal grinding/drying|
hard coal + petcoke, 85% < 80µm
hard coal, 90% < 90µm
|A/C||1,2 m/min||1,45 m/min|
|H2O||10 %||40 %|
|Filtering area||850 m²||4 x 1.100 m²|
|Filter media||PES needlefelt, antistatic||PAN needlefelt|