Chemical, electroplating and new material factories produce dust mixed with acid alkali corrosive substances. Ordinary filter media suffers rapid corrosion damage within short operation period under such working conditions. Reasonable matching of corrosion resistant filter media extends dust removal equipment service life and reduces frequent spare part replacement cost for chemical manufacturers.
Standard spunbond polyester filter resists weak neutral dust environment well but cannot sustain long term contact with strong acid or alkaline dust. Corrosive particles gradually break polyester fiber structure and form tiny leakage holes within several months. It is only suitable for slightly neutral low corrosive industrial dust without persistent chemical volatile components.
PTFE film chemical stability resists most weak acid, weak alkali and mild organic solvent corrosive dust. The inert film isolates corrosive particles from polyester substrate fiber, slowing down base material aging speed greatly. Factories generating slightly corrosive coating and plastic dust take PTFE coated filter as primary filter media choice.
High specification nano cartridge filter adopts full PTFE composite fiber substrate matching nano interception film, forming double layer anti corrosion barrier. This composite structure adapts medium concentration acid alkali dust environment such as electroplating workshop waste gas, balancing ultra fine dust capture capacity and long term anti corrosion stability.
For waste gas carrying high concentration strong acid or strong alkali particles, single filter media cannot bear continuous corrosion impact. Adopt two stage purification layout: wet scrubber neutralizes most corrosive gas first, then high corrosion resistant nano cartridge filter completes fine dust interception to protect filter media from rapid corrosion failure.
Corrosion resistant filter media still requires regular weekly pulse cleaning to remove residual corrosive dust attached on surface. Long term accumulated corrosive particles gradually erode filter film layers. Avoid long term equipment shutdown with dust staying on filter media surface to lower permanent corrosion damage risk of all types of industrial filter media.
