- Equity Code ：832537
The ZMCC pulse jet air filters are mid-sized dust collectors designed to meet ultra-low emission requirements. Its optimized structural design achieves high filtration efficiency with low operating resistance. Pulse jet cleaning ensures effective dust removal with reliable operation and easy maintenance. Widely applied in cement, metallurgy, power, and chemical industries for dust-laden gas filtration and material recovery.
The ZMCC pulse jet air filters comprise a filter chamber casing, clean air plenum casing, filter bags and bag cages, pulse jet cleaning system, hopper, and air slide or flap valve.
Dust-laden gas enters through the inlet of the air plenum (or directly through the hopper inlet on smaller models), is redirected by the inclined partition toward the hopper, where reduced flow velocity allows coarser particles to fall under inertia. Finer particles are carried upward into the filter chamber, where they are retained on the outer surface of the filter bags by the dust cake filtration layer. Cleaned gas passes through the interior of the filter bags into the clean air chamber and is discharged to the atmosphere via the system fan.
When dust accumulation on the outer bag surface reaches a set thickness and the inlet/outlet differential pressure reaches the preset value, the pulse jet system initiates row-by-row cleaning. The pulse valves mounted on the air manifold at the top of the unit open sequentially, injecting compressed air into each row of bags in short bursts. The reverse high-velocity airflow causes sudden bag expansion, generating deformation and vibration that dislodges the accumulated dust, which settles into the hopper and is discharged via air slide or flap valve. Upon completion of the full cleaning cycle, the controller shuts off and the filter returns to normal operation. The entire cleaning process is controlled by a PLC programmable controller.
1. Selection of Filtration Velocity
The selection of filtration velocity is closely related to factors such as the application process, dust characteristics, dust concentration, emission concentration, viscosity, gas temperature, moisture content, and filter media. The recommended filtration velocity is 0.7–1.0 m/min. When the dust particle size is finer, and the temperature, humidity, concentration, and viscosity are higher, a lower value should be selected; conversely, a higher value may be selected.
2. Selection of Filter Media
The selection of filter media should take into account factors such as the temperature and moisture content of the dust-laden gas, its acidic or alkaline properties, and the viscosity, concentration, and abrasiveness of the dust. When the dust-laden gas has a low moisture content, is non-acidic and non-alkaline, and the temperature is ≤130°C, membrane-coated polyester needle-punched felt with a weight of 500–550 g/m² is generally selected. Depending on the specific characteristics of the dust-laden gas, other filter media such as Metamax needle-punched felt, Ryton needle-punched felt, P84 needle-punched felt, or Fluormesh may also be used. If the main component of the dust-laden gas is coal dust or other explosive dust, anti-static membrane-coated polyester needle-punched felt should be selected.
Dust collector model: ZMCCxx-2×n, where ZMCC denotes an ultra-low emission medium-sized pulse-jet dust collector; xx denotes the number of filter bags per compartment; and 2×n denotes a double-row arrangement, with n compartments per side.
