Industrial Filter Bags for Dust Collection Systems

Filter Bags for Industrial Dust Collection Systems

ALWO filter bags are configured for pulse-jet or mechanical-shaker dust collectors and can be supplied with suitable metal support cages. Bag dimensions, filter medium, surface finish and fixing system are selected for the actual collector and process.

Selection criteria

• dust type, particle-size distribution and concentration;
• gas temperature, moisture and chemical composition;
• abrasiveness, chemical attack and the presence of sparks;
• cleaning method and filtration velocity;
• required emission limit and permissible pressure drop;
• target service life and maintenance conditions.

Fibre type, surface treatment and fabric weight are selected according to temperature, chemical exposure, cleaning method and the required filtration performance.

Fixing and sealing

A snap-ring fixing secures the bag in the collector tube sheet and provides a seal when the diameter, groove and installation are correct. The cage must support the bag without sharp edges or contact points that could cause premature wear.

Safety: for combustible dust, antistatic media is only one protective measure. The complete system requires assessment of earthing, explosion relief, isolation, fire protection and safe bag-change procedures.