Tiantai Industrial Cloth Factory provide Aramid (Nomex) filter bag
for dust collection, the specification of the aramid needle felt as
following:
Standard sample:
Material: 100% Nomex filter / Nomex scrim
Weight: 500g/sq.m
Thickness:1.8mm
Air Permeability: 280 L/ m2. S @200pa
Tensile strength: Warp: >800N/5cm; Weft :> 1300N /5cm
Elongation : Warp: <;; 25%; Weft: <;;50%
Service Temperature: Continues: <;;204C; Peaks: 220C
Shrinkage (at 200C):<;;1%.
Surface treatment:singed & glazed, heat set.
The other finish treatment available: PTFE bathing and PTFE
membrane.
In normal temperature circumstance(under 150 C), the polyester
needle felt will satisfy the bag filter systems, if the temperature
on the high side, such as tail gas/fume/dust from metallurgical
plant, carbon black plant, iron works(blast furnace gas), cement
plant (tail gas from vertical kiln), petroleum fumes from mixing
round the beton and asphaltum, coal fired boiler, etc, the normal
filter method won't work. The reason as following: 1. be restricted
by specific resistance, the electronic filter system won't works,
so the bag filter system is the first choice for dust/fume removal.
2.if the user try to reduce the temperature(made it under 150 C),
which will increase the investment and also be restricted by field.
3. just because there may contain some material such as sulfur in
the gas/fume, the acid dew will exist. Aramid needle felt, besides
equip the ability of spinnability, abrasion resistance, they also
with the ability of high temperature resistance, flame resistance,
infusibility. The fiber won't self-ignite, when the temperature up
to 400 C, the aramid fiber will carbonization gradually. Besides,
aramide fiber also with a good dimensional stability, long service
life.
Note: 1. special specification can be customized.
2. maximum width:2.3meters.
3. both filter cloth rolls and filter bags are available from Suita
Filters.