The ZSDM Series Pulse Jet Baghouse is a high-efficiency fabric filter dust collector engineered for coal-fired boilers and industrial furnaces. Featuring low-pressure long-bag pulse cleaning, an integrated bypass system, and modular construction, it achieves particulate emission levels below 10 mg/Nm³ — meeting EPA NSPS, EU Industrial Emissions Directive 2010/75/EU, and BAT-AEL requirements.
Zhongsheng Environmental's ZSDM Series Pulse Jet Baghouse Dust Collector represents the latest evolution in fabric filtration technology for industrial air pollution control. Originally developed for coal-fired boiler applications and refined through extensive benchmarking of international designs, the ZSDM Series combines low-pressure pulse-jet cleaning with long filter bags in a structurally robust, modular housing. The result is an exceptionally efficient, energy-saving, and easy-to-maintain dust collection system that consistently delivers outlet emissions well below regulatory limits.
Dust-laden flue gas is drawn into the baghouse by the induced draft (ID) fan and enters the lower hopper section, where the sudden expansion in cross-sectional area reduces gas velocity. This velocity reduction causes larger particles to settle directly into the hopper by gravitational and inertial forces.
The remaining fine particles are carried upward with the gas stream and deposited on the outer surface of the filter bags as the gas passes through the fabric from outside to inside. Clean gas exits through the top plenum and is discharged via the stack.
As the dust cake builds on the bag surface, differential pressure across the filter increases. When a preset resistance threshold is reached, the pulse-jet cleaning cycle initiates: a burst of compressed air is delivered through a pulse valve and blow pipe into the top of each bag row in sequence. This momentary reverse pulse flexes the bag fabric and dislodges the accumulated dust cake, which falls into the hopper below for extraction by rotary valve, screw conveyor, or pneumatic transport.
| Parameter | Specification |
|---|---|
| Dust Collection Efficiency | ≥ 99.9% |
| Outlet Emission | < 10 mg/Nm³ (achievable < 5 mg/Nm³ with premium media) |
| Cleaning Method | Low-pressure pulse jet (0.2 – 0.4 MPa) |
| Bag Length | Up to 8 m (long-bag design) |
| Filter Media Options | PPS, P84, PTFE membrane, fiberglass, Nomex (application dependent) |
| Max. Operating Temperature | Up to 260 °C (with appropriate media selection) |
| Bypass System | Built-in internal bypass with automatic activation |
| Compressed Air Consumption | 30–50% lower than conventional pulse systems |
| Hopper Discharge | Rotary valve, screw conveyor, or pneumatic transport |
| Structural Design | EN 1993 / AISC; seismic and wind load rated |
| Applicable Standards | EPA NSPS (40 CFR Part 60), EU IED 2010/75/EU, BAT-AEL |
The ZSDM Series delivers best-in-class particulate control with significantly lower compressed air consumption and maintenance cost than conventional designs. The integrated bypass system protects your filter bag investment during thermal excursions — a feature typically available only as a costly add-on from Western OEMs. Modular, compartmentalized construction enables online maintenance without production interruption, while our retrofit engineering capability means we can upgrade aging ESPs or baghouses to meet today's tightest emission limits. Zhongsheng provides full turnkey project delivery: process design, structural engineering, fabrication, installation supervision, commissioning, and operator training.
Consistently achieves outlet emissions below 30 mg/Nm³; capable of meeting ≤10 mg/Nm³ ultra-low emission standards with appropriate filter media.
Compressed air bursts through pulse valves in sequence, creating a momentary reverse flow that flexes the filter bag and dislodges accumulated dust cake into collection hoppers.
Yes, engineered for ESP retrofit with minimal structural modification — often achieving significantly better emission performance.
Low-pressure pulse cleaning consumes 30–50% less compressed air than conventional high-pressure systems.
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