Bag Filter House

Product Specifications

Technical details and manufacturing context for Bag Filter House

Definition

The Bag Filter House is the main structural component of a bag filter system within an Off-gas Cleaning System. It serves as the enclosure that houses the filter bags, provides the necessary volume for gas flow distribution, collects the filtered dust in hoppers, and maintains the pressure differential required for efficient filtration. It typically includes compartments, access doors, inspection ports, and support structures for the filter bags. The housing is fabricated from carbon steel or stainless steel, with material grades ranging from Q235B to 304, depending on corrosion resistance requirements. Key design parameters include filtration area (50–500 m²), gas flow rate (5000–50000 m³/h), filtration efficiency (99.5–99.9% per ISO 16890), operating temperature (-20 to 260°C), operating pressure (-0.05 to 0.05 MPa), pressure drop (1.0–2.0 kPa), air-to-cloth ratio (0.8–1.5 m/min), shell thickness (3–6 mm), leakage rate (≤3%), noise level (75–85 dB(A) at 1 m per ISO 11202), weight (2000–15000 kg), and dimensions (L×W×H: 2000×1500×3000 to 6000×4000×8000 mm). These values are reference ranges for directory purposes and must be confirmed for the specific model and application with the legal manufacturer or supplier. The Bag Filter House is designed to handle dust-laden off-gas, capturing particulate matter on the exterior of filter bags while allowing clean gas to pass through. It is essential for compliance with particulate emission limits, including PM2.5. The housing must maintain structural integrity under vacuum or positive pressure, and its design affects installation footprint and foundation requirements. Regular inspection of access doors, inspection ports, and hopper discharge is necessary to ensure proper operation. Failure to maintain the housing can lead to leaks, reduced filtration efficiency, and increased pressure drop. Always verify model-specific values and standards with the manufacturer or supplier before procurement.

Working Principle

Dust-laden off-gas enters the Bag Filter House and flows through filter bags. Dust particles are captured on the exterior surface of the bags, while clean gas passes through the fabric and exits the system. The collected dust accumulates in hoppers at the bottom of the house for periodic removal. The housing provides the necessary volume for even gas distribution and maintains the pressure differential required for efficient filtration. The air-to-cloth ratio and filtration area determine the gas handling capacity. The pressure drop across the bags indicates filter loading and the need for cleaning or replacement. The housing must be sealed to prevent leaks, as excessive leakage reduces efficiency. The operating temperature and pressure must be within the design limits to avoid damage to the filter media and structure.

Common Materials

Carbon Steel, Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Filtration Area	50–500 m²	Determines gas handling capacity
Gas Flow Rate	5000–50000 m³/h	Match to process exhaust volume
Filtration Efficiency	99.5–99.9 %	For PM2.5 complianceISO 16890
Operating Temperature	-20–260 °C	Higher requires heat-resistant media
Operating Pressure	-0.05–0.05 MPa	Negative for suction, positive for blow
Pressure Drop	1.0–2.0 kPa	Higher indicates filter loading
Air-to-Cloth Ratio	0.8–1.5 m/min	Affects efficiency and bag life
Shell Thickness	3–6 mm	Structural integrity under vacuum
Material Grade	Q235B–304	Corrosion resistance for chemical useGB/T 700, ASTM A240
Leakage Rate	≤3 %	Excessive leaks reduce efficiency
Noise Level	75–85 dB(A)	At 1m distanceISO 11202
Weight	2000–15000 kg	Affects foundation and installation
Dimensions (L×W×H)	2000×1500×3000–6000×4000×8000 mm	Space constraints for retrofit

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Filter Bag Cage
Supports filter bags and maintains their shape during operation

Material: Galvanized Steel
Access Door
Provides entry for maintenance and filter bag replacement

Material: Carbon Steel
Dust Hopper
Collects and stores filtered dust for removal

Material: Carbon Steel
Tube Sheet Part
Plate that separates clean gas and dirty gas compartments, with holes for filter bag installation

Material: Carbon Steel
Filter Bags
The fabric bags that capture the dust; the house exists to contain them.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Off-gas Cleaning System

View system integration details

Manufacturers of Bag Filter House

Manufacturer profiles associated with Bag Filter House.

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Frequently Asked Questions

What is the primary function of a Bag Filter House?

The Bag Filter House is the structural enclosure that houses filter bags in an off-gas cleaning system. It provides the volume for gas flow distribution, collects dust in hoppers, and maintains the pressure differential needed for filtration.

What materials are commonly used for Bag Filter Houses?

Common materials include carbon steel and stainless steel, with grades such as Q235B to 304. The choice depends on corrosion resistance requirements and operating conditions.

How do I select the right Bag Filter House size?

Selection is based on required gas flow rate (5000–50000 m³/h), filtration area (50–500 m²), and air-to-cloth ratio (0.8–1.5 m/min). These parameters must be matched to your process exhaust volume and particulate load.

What maintenance is required for a Bag Filter House?

Regular inspection of access doors, inspection ports, and hopper discharge is needed. Monitor pressure drop (1.0–2.0 kPa) as an indicator of filter loading. Check for leaks and ensure structural integrity, especially under vacuum or pressure.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	-5000 to +5000 Pa (typical differential pressure)
flow rate:	Up to 500,000 m³/h (depending on size)
temperature:	-20°C to 200°C (depending on material)
slurry concentration:	Up to 500 g/m³ (dust loading)

Product Specifications

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