Environmental Control
Application
Product quality and compliance with dust emission limits is a core requirement for de-dusting in the Cement, Gypsum and Lime industries. The choice of Filter Media is of paramount importance in the cement kilns where high levels of NOx are found, due to high combustion temperatures. VAID offers Filter Bags, made from various Media best suited to the Customer's requirement.
| Scrim and Fibre Types | Cont. Temp (Peaks)* | Resistance to Hydrolysis | Resistance to Acids | Resistance to Alkalis | Resistance to Oxidation |
| Clinker Cooler | |||||
| Polyester (PE) | 150oC/(150oC) | Restricted | Good | Restricted | Good |
| Aramid (NO) | 200oC/(200oC) | Restricted | Restricted | Restricted | Good |
| Rotary Kiln and Raw Meal Mill | |||||
| Acrylic (AT) | 125oC/(140oC) | Good | Good | Good | Good |
| Polyphenylene Sulfide (PPS) | 190oC/(200oC) | Excellent | Excellent | Excellent | Restricted |
| Polyimide (PI) | 240oC/(260oC) | Good | Restricted | Restricted | Good |
| Premium Fiber Blend (PFB) | 240oC/(260oC) | Good | Restricted | Good | Good |
| Teflon (PTFE, TFL) | 250oC/(280oC) | Excellent | Excellent | Excellent | Excellent |
| Fiberglass (GL) | 260oC/(288oC) | Good | Good | Restricted | Excellent |
| Chlorine Bypass | |||||
| Polytetrafluorethylene (PTFE, TFL) | 250oC/(280oC) | Excellent | Excellent | Excellent | Excellent |