Blast Furnace Gas Filters
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Overview
Blast furnace gas filters play a critical role in steel production, purifying the gas generated during the conversion of iron ore into metal. This gas, a byproduct of the blast furnace process, contains dust and impurities that must be removed before it can be reused for heating or power generation.
Key Features of Modern Blast Furnace Gas Filters:
High-Temperature Durability
- Filter bag material withstands 260°C (long-term) and 280°C (short-term).
- Service life of up to 24 months at 200°C.
Advanced Dust Collection System
- Utilizes long-bag pulse or low-pressure nitrogen pulse injection for efficient cleaning.
- Nitrogen is the preferred cleaning medium as it contains no dust or moisture, minimizing energy consumption and equipment costs.
Enhanced Purification & Dedusting Efficiency
- Uses long-bag low-pressure pulse technology to ensure a dust content of ≤ 5mg/m³ (typically 3mg/m³) in purified gas.
- Eliminates the need for pressurization and blowback deashing, reducing atmospheric pollution.
Automated Control System
- PLC-based automation for reliable, unmanned operation, reducing maintenance efforts.
Proven Industrial Applications
- Successfully implemented in blast furnaces with capacities of 350m³ to 5000m³ across domestic steel plants.
These high-performance gas filters ensure efficient purification, reduced environmental impact, and lower operational costs, making them indispensable in modern steel manufacturing.