Bag house dust collector

Tongli Compound fertilizer bag dust collector

Tongli compound fertilizer bag filter is a dust removal equipment specially used for compound fertilizer production line. Its processing air volume is usually between 18,000-40,000 m³/h, which can effectively remove dust particles of 0.5-10μm. The main body of the equipment is made of 304 stainless steel, with 200-800 filter bags installed inside. The diameter of a single filter bag is 130-160mm and the length is 2-3m. Pulse jet cleaning is adopted, and the jet pressure is 0.4-0.6MPa. The dust removal efficiency can reach more than 99.9%, and the outlet dust concentration is <30mg/m³. The equipment has the characteristics of corrosion resistance and anti-condensation, and is suitable for the high humidity and strong corrosive environment in compound fertilizer production. The bottom is equipped with a screw conveyor, which can directly recycle the collected dust to the production line to improve the utilization rate of raw materials.

tongli npk fertilizer plant dedusting system bag house filter main picture 1

TONGLI Compound fertilizer bag dust collector

A MACHINE YOU CAN DEPEND ON!

Tongli compound fertilizer bag filter uses high temperature resistant PPS filter material, with a maximum temperature tolerance of 200℃. The pulse cleaning pressure is 0.6-0.8MPa, and the inlet wind speed is controlled at 0.8-1.2m/s. The dust removal efficiency is over 99.5%, and the outlet dust concentration is as low as 20mg/m³. The equipment is equipped with an anti-blocking material level detection device to ensure stable operation. The processing air volume can reach 30000m³/h, which is suitable for medium-sized compound fertilizer production lines

Multi-layer bag design ‌

Different filter materials can be selected according to different needs to improve the filtration efficiency. The filter bag is usually composed of multiple layers of fiber material fabric. It can be made of high-efficiency materials such as cloth and fiber, and coated with special coatings to improve the filtration efficiency.

Physical adsorption and electrostatic action principle ‌

The particulate matter in the flue gas is captured by the bag filter to achieve the purpose of purifying the exhaust gas. Larger particles quickly settle to the bottom of the filter bag, and smaller particles are trapped on the surface by the filter to form a thin layer. Due to the electrostatic effect of the bag, these particles are tightly adsorbed on the surface of the filter bag to achieve efficient filtering effect.

Multi-stage dust removal structure improves the filtration effect

The three-stage dust removal structure is adopted, including pre-separator, main filter chamber and post-HEPA filter. The pre-separator can remove more than 80% of large particles and reduce the load of the main filter bag. The main filter chamber uses ultra-fine fiber filter material with a filtration accuracy of 0.5μm. The final HEPA filter can intercept 99.97% of fine particles, ensuring that the outlet dust concentration is less than 10mg/m³.

Parameter	FMBC-5000 (Small)	FMBC-10000 (Medium)	FMBC-20000 (Large)
Air Volume Capacity	50,000 m³/h	72,000 m³/h	150,000 m³/h
Filter Area	500 m²	1,000 m²	2,000 m²
Filtration Speed	1.2 - 1.8 m/min	1.2 - 1.8 m/min	1.2 - 1.8 m/min
Inlet Dust Concentration	≤ 80 g/m³	≤ 100 g/m³	≤ 120 g/m³
Outlet Dust Concentration	≤ 20 mg/m³	≤ 10 mg/m³	≤ 5 mg/m³
Filtration Precision	1 μm	0.5 μm	0.3 μm
Filter Bag Material	Polyester Fiber	Polyester Fiber (Coated)	PTFE-Coated Polyester Fiber
Number of Filter Bags	200 pcs	400 pcs	800 pcs
Filter Bag Dimensions	Φ130 mm × 2500 mm	Φ130 mm × 3000 mm	Φ130 mm × 3500 mm
Operating Temperature	-10°C ~ 120°C	-20°C ~ 130°C	-30°C ~ 150°C
Pressure Drop	800 - 1300 Pa	800 - 1500 Pa	1000 - 1800 Pa
Cleaning Method	Pulse Jet	Pulse Jet	Pulse Jet
Pulse Pressure	0.3 - 0.5 MPa	0.4 - 0.6 MPa	0.5 - 0.7 MPa
Casing Material	Carbon Steel, 3mm Thickness	316L Stainless Steel, 4mm Thickness	Duplex Stainless Steel, 5mm Thickness
Equipment Dimensions (L×W×H)	6000×2500×5000 mm	8000×3000×6000 mm	12000×4000×8000 mm
Equipment Weight	Approx. 8,000 kg	Approx. 15,000 kg	Approx. 30,000 kg
Fan Power	55 kW	110 kW	220 kW
Control System	PLC Automatic Control	PLC Automatic Control	PLC Automatic Control + Remote Monitoring
Explosion-Proof Rating	ExdIIBT4	ExdIIBT4	ExdIICT4
Noise Level	≤ 80 dB(A)	≤ 85 dB(A)	≤ 90 dB(A)

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FAQ

1. What is a compound fertilizer baghouse dust collector? What is its primary use?

A compound fertilizer baghouse dust collector is a specialized dust removal device used in the production of compound fertilizers. It is mainly used to capture and filter dust particles generated during production, improving the working environment and reducing environmental pollution.

This dust collector typically consists of an air intake system, a filtration chamber, a cleaning system, an ash hopper, and an exhaust system. It can efficiently handle high concentrations of sticky dust produced during the fertilizer production process.

The filtration efficiency generally reaches over 99.9%, and the outlet dust concentration can be controlled below 20 mg/m³, meeting strict environmental standards.

2.What are the main technical parameters of the compound fertilizer baghouse dust collector?

The main technical parameters of a compound fertilizer baghouse dust collector include:
Air volume: typically between 50,000-200,000 m³/h
Filtration area: 500-2,000 m²
Filtration speed: usually controlled at 0.8-1.2 m/min
Inlet dust concentration: ≤100 g/m³
Outlet dust concentration: ≤20 mg/m³
Filtration precision: up to 1 μm
Pressure loss: 800-1500 Pa
Operating temperature range: -10°C to 120°C
These parameters may vary slightly depending on the specific model and manufacturer. The selection should be based on actual needs and working conditions.

3. What types of cleaning systems are available for the compound fertilizer baghouse dust collector? What are their characteristics?

There are three main types of cleaning systems for the compound fertilizer baghouse dust collector:

Pulse jet cleaning: The most common, it uses compressed air to create a high-pressure pulse for efficient cleaning. It is energy-efficient and suitable for large dust collectors.

Reverse air cleaning: This system uses clean air to blow dust off the filter bags from the opposite direction. Although the cleaning is uniform, it consumes more energy.

Mechanical shaking cleaning: This system relies on mechanical vibrations to shake off the dust, with a simple structure but lower cleaning effectiveness, making it unsuitable for fine dust.

For the compound fertilizer industry, where dust is highly adhesive and concentrated, pulse jet cleaning is typically used. It provides excellent cleaning performance, allows for online cleaning without interrupting production, and is energy-efficient with low operating costs.

4. What is the filtration efficiency of the compound fertilizer baghouse dust collector? What factors influence it?

The filtration efficiency of the compound fertilizer baghouse dust collector typically exceeds 99.9%, and the outlet dust concentration can be controlled below 20 mg/m³. Several factors influence the filtration efficiency:

Filter material selection: Different materials and structures of the filter media have varying levels of filtration efficiency.

Filtration speed: Usually controlled at 0.8-1.2 m/min, as higher speeds can reduce efficiency.
Dust characteristics: Particle size distribution, stickiness, and other properties affect filtration performance.

Additional factors include the cleaning system’s effectiveness, installation quality of the filter bags, and operating time. Improper cleaning may cause secondary dust release, while poor sealing during installation can lead to dust leakage. Over time, the performance of filter bags may degrade, requiring proper maintenance to ensure optimal performance.

5. What are the installation requirements for the compound fertilizer baghouse dust collector? What should be considered?

The installation of a compound fertilizer baghouse dust collector requires consideration of the following:

Proximity to the dust source to reduce the length of the transport pipes.
Accessibility for maintenance and repair, with adequate operational space reserved.
Fan noise should be considered, placing the collector away from office areas if possible.

Other key factors include ensuring the foundation is solid enough to support the equipment's weight, ease of dust transport and collection, and avoiding areas prone to water accumulation to prevent moisture damage.

Explosion-proof requirements should be observed, keeping the equipment away from open flames. Adequate space should be reserved for airflow, and proper coordination with other equipment is necessary. The installation must also comply with local safety and environmental regulations.

6. What are the maintenance requirements for the compound fertilizer baghouse dust collector?

Maintenance of the compound fertilizer baghouse dust collector is crucial to ensuring its long-term and stable operation. First, regular inspections of the filter bags for wear, particularly in areas exposed to dust, are essential. Damaged or worn-out filter bags should be replaced promptly to maintain dust collection efficiency. Additionally, it is important to regularly check the cleaning system, whether it's a pulse jet or another method, to ensure proper operation and effective cleaning to prevent dust buildup, which could impact the equipment’s performance.

Another key aspect of maintenance is ensuring the equipment’s sealing integrity. Poor sealing can result in dust leakage, which not only reduces the efficiency of dust collection but can also lead to secondary environmental pollution. Routine inspections and replacements of sealing components are necessary to prevent this.

Finally, regular checks of the electrical and control systems, particularly the PLC system, should be conducted to ensure smooth operation. For collectors equipped with remote monitoring, it is essential to verify proper communication and continuously monitor the equipment’s status in real time to avoid production disruptions due to system failures.