Sintered Felt Filter Bag
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Sintered Felt Filter Bag for High Temperature Dust Removal

Sintered felt filter bag is a porous filter bag for depth filtration. It is made of bundle metal fibers by sintering in high temperature and welding after special non-woven laying and stacking with the pore gradient formed by layers of different pore sizes. Our filter media are composed of a metal cage skeleton, coarse metal fiber layer and fine metal fiber layer. It is widely used in various industries involving high temperature flue gas dust removal due to its excellent resistant to high temperature and corrosion.

A conventional type and a pleated type sintered felt filter bags are displayed.
Category

Conventional type (S series)

Pleated type (F series)

Specification
  • Material: stainless steel (304, 316L, 310S, 314, etc.), FeCr Al
  • Working temperature: Max. 1000 °C.
  • Porosity: 75% – 88%
  • Connection: flange
  • Initial resistance: 30–100 Pa
  • Emission concentration: < 5 mg/Nm3
  • Cleaning method: regular cleaning or online pulse cleaning
Table 1: Popular Specification of Sintered Felt Filter Bags
Model Installation Diameter (mm) Total Length L (mm) Length l (mm) Diameter D (mm) Diameter d (mm) Filter Area (m2)
BD-162-150-S 162 1500 1466 177 143 0.76
BD-162-150-F 162 1500 1466 177 143 2.03
BD-162-75-S 162 750 716 177 143 0.38
BD-162-75-F 162 750 716 177 143 1
BD-162-50-S 162 500 466 177 143 0.25
BD-162-50-F 162 500 466 177 143 0.66
BD-133-150-S 133 1500 1466 153 118 0.62
BD-133-150-F 133 1500 1466 153 118 1.62
BD-133-75-S 133 750 716 153 118 0.31
BD-133-75-F 133 750 716 153 118 0.8
BD-133-50-S 133 500 466 153 118 0.21
BD-133-50-F 133 500 466 153 118 0.53
BD-125-150-S 125 1500 1466 142 108 0.59
BD-125-150-F 125 1500 1466 142 108 1.49
BD-125-75-S 125 750 716 142 108 0.29
BD-125-75-F 125 750 716 142 108 0.73
BD-125-50-S 125 500 466 142 108 0.2
BD-125-50-F 125 500 466 142 108 0.48
Note
  • Installation diameter refers to the diameter for filter installed on the installation plate.
  • Other specifications are available upon request.
Connection

Filters are generally provided with a flange for connection to enhance its high temperature and high pressure resistance.

  • ΦA (flange ID): 108 mm, 118 mm, 143 mm.
  • ΦB (flange OD): 142 mm, 153 mm, 177 mm.
  • C (flange thickness): 34 mm
  • ΦD (flange hole diameter): 15 mm, 19 mm
  • Number of holes: 4
  • Other: Special sizes are available upon request.
Seal Fittings
Seal Gasket
Flange and installation plate are firmly sealed with a seal gasket.

Flange & seal gasket installation

The filter is sealed by tightly compressing the seal gasket onto the back of the flange to the upper surface of the installation plate. The roughness of the upper surface of the installation plate and the fitting surface of the flange shall be well designed to perfectly match with the chosen seal gasket as it directly determines whether the seal is reliable and leek-free.

Metal seal gasket

Semi-metallic seal gasket

Asbestos rubber seal gasket

PTFE seal gasket

Hold Down Bar

Hold down bars are the seal fittings between flange holes and the installation plate for fixing. Both parallel and cross hold down bars are available for your option.

Parallel hold down bars

Cross hold-down bars

Filtration Industries
Application
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