1. TYPE OF TECHNOLOGY
2. RETAINABLE IMPURITIES
Dust particles of all kinds.
3. RETENTION EFFICIENCY
With this technology, medium to submicronic particles can be filtered with an efficiency of over 97%.
4. EQUIPMENT AND PROCESS DESCRIPTION
Cartridge filters take the place of bag filters under certain operating conditions or when available space is limited.
The folded structure of filtering cartridges provides large filtering surfaces in a compact form.
Advantages: The filtering surface of cartridges is 10 times greater than that of bags of identical gauge, and they do not require metal cages.
Cartridge filters are designed with the capacity for self-cleaning through an air pulse-jet system. The air used for this purpose is compressed at pressures of 5-7 bars, depending on the physicochemical properties of the dust adhering to the filtering surfaces. The duration of individual cleaning air-jets is shorter than 1 second, and cleaning jets can be set to be performed at intervals between 1 and 25 minutes. The pressure drop reaches approximately 100 mm H2O in the case of coarse dust, and 100-150 mm H20 when the filtered dust is fine. Cartridges can be manufactured out of a blend of cellulose and various types of polyester, polypropylene, nomex, etc. depending on the nature of the dust to be filtered. Retention efficiency oftentimes reaches 99%. For filtering air with high concentrations of dust, an additional preliminary filtering unit is recommended.
5. APPLICABLE FIELDS
Cartridge filters can be used in any industrial process where dust is present and where impurity and air temperature does not exceed 140 °C.