Explosion Proof Centrifugal Radial Fan for Industrial Dust Collection in High Temperature and Corrosive Environments

This type of fan is a centrifugal fan specifically designed for industrial scenarios with high - temperature, corrosive media and the risk of dust explosion. It realizes gas transportation by generating centrifugal force through the rotation of the impeller. Meanwhile, it integrates functions of high - temperature resistance, corrosion resistance, dust removal, and explosion - proofing to ensure safe operation under harsh working conditions. The specific definition is as follows:

Analysis of Core Functions and Characteristics
1. Adaptability to Working Conditions
- High - temperature environment: It can withstand temperatures above 150°C (such as boiler flue gas and metallurgical furnace exhaust). Core components like the impeller and volute are made of high - temperature - resistant materials (such as heat - resistant steel and alloy cast iron) or have heat - insulation designs to prevent the attenuation of material strength at high temperatures.
- Corrosion protection: For acidic gases (such as SO₂ and Cl₂) and moist corrosive media, the surfaces of the casing and impeller are made of corrosion - resistant materials (such as stainless steel 316L and titanium alloy) or have anti - corrosion coatings (such as fluororubber and ceramic spraying) to prevent medium erosion.
2. Dust - Removal and Explosion - Proof Design
- Dust - removal function: The structure of the impeller and flow path is optimized (such as large blade spacing and smooth surface) to reduce dust accumulation. Some models are equipped with pre - dust - removal devices (such as filter cartridges and cyclone separators), or use wear - resistant blades (with tungsten carbide surfacing) to adapt to high dust concentrations (such as in the mining and cement industries).
- Explosion - proof mechanism: It meets the safety requirements of explosive environments (such as places with dust and combustible gases). An explosion - proof gap is reserved between the impeller and the casing. The motor and electrical components are of explosion - proof type (such as with flame - proof enclosures). The impeller material is treated to be anti - static (such as through surface oxidation of aluminum alloy) to avoid explosions caused by friction sparks.
3. Inherent Attributes of Centrifugal Fans
- Gas is axially sucked in from the center of the impeller, and is radially discharged under the action of centrifugal force driven by the blades. The kinetic energy is converted into pressure energy through the volute. It is suitable for industrial systems that need to overcome high resistance and transport dusty or corrosive gases (such as waste gas treatment, dust collection, and transportation of flammable and explosive gases).

Key Design Elements (to Aid in Understanding the Definition)
- Material system: High - temperature - resistant alloy (such as GH3030) + corrosion - resistant coating (polytetrafluoroethylene) + explosion - proof material (cast aluminum ZL102 with explosion - proof certification).
- Safety certification: It complies with the GB 3836 explosion - proof standard and the weatherability certification for equipment in high - temperature environments (such as UL1741). The dynamic balance grade of the impeller reaches G1.0 to reduce the risk of vibration.
- Application scenarios: Catalytic cracking units in petrochemical industry, high - temperature dust - removal systems in coal chemical industry, explosion - proof ventilation in metal heat - treatment workshops, etc."

Which application scenario do you think has the highest requirement for this kind of fan?

Key Features

• Impeller diameter: 70~3500 mm
• Speed of mainshaft: 560~2900 rpm
• Pressure range: 1000~25425 Pa
• Flow range: 3297~733050 m3/h
• Air Temperature: 20~1000 Celsius degree

• Material: Cast Iron, Carbon Steel, Stainless Steel.

• Efficiency: 70%-90%