1. Industrial Gas Supply Systems

Purpose: Store and regulate oxygen, nitrogen, and argon for primary steelmaking (BOF, EAF), ladle refining, and protective atmospheres.

• Oxygen Storage Tanks: Used for blowing oxygen into BOF/EAF to decarburize molten iron.

• Argon Buffer Vessels: Employed in ladle metallurgy for argon stirring and alloy homogenization.

• Nitrogen Pressure Vessels: Used for inerting, blanketing, and purging.

Key Specs:

• Pressure: 2.5–4.0 MPa

• Materials: Q345R, 16MnⅢ, S30408

• Standards: ASME VIII Div.1, PED, GB150

2. Hydrogen-Based Direct Reduction (H₂-DRI)

Purpose: Enable low-carbon steelmaking using hydrogen as a reductant in direct reduction furnaces.

• Резервуары для хранения водорода: High-pressure vessels for buffering and distributing H₂ safely.

• Surge Vessels: Stabilize hydrogen flow rates and pressure during DRI operations.

Key Specs:

• Working pressure: Up to 35 MPa

• Materials: 316L, S31803, Inconel

• Standards: ISO 11120, ASME Section VIII Div.2

• Special Features: Hydrogen embrittlement resistance, leak detection, explosion protection

3. Vacuum Metallurgy and Alloying Systems

Purpose: Enable ultra-low impurity control (H, O, N) and precision alloy additions during refining.

• Vacuum Degassing Vessels: Used in RH/VD/VOD processes for steel purification.

• Alloy Feeding Hoppers: Pressurized containers for accurate alloy dosing.

Key Specs:

• Vacuum: ≤1 Pa

• Materials: Q345R+304 cladding, S30408

• Standards: GB150, NB/T 47058, ASME U Stamp

4. Descaling and Cooling Water Systems

Purpose: Provide consistent high-pressure water for oxide scale removal and thermal management.

• Water Accumulators: Stabilize water pressure in hot rolling and casting lines.

• Air-over-Water Surge Tanks: Reduce pressure fluctuation during descaling.

Key Specs:

• Pressure: 4–8 MPa

• Materials: Carbon steel, stainless steel

• Features: Corrosion-resistant lining, real-time pressure control

5. By-product Treatment Systems

Purpose: Contain, neutralize, and process slag, dust, fumes, and chemical residues.

• Explosion-Proof Dust Buffers: Used in pneumatic conveying of fine powders.

• Slag Reaction Vessels: Pressurized reactors for granulation or neutralization.

• SCR and FGD Vessels: Handle ammonia, lime slurry, or desulfurizing agents.

Key Specs:

• Explosion-proof configurations

• High-wear linings and thermal resistance

• Integrated sensors and venting safety systems

6. Energy Recovery and Heat Exchange Systems

Purpose: Recover waste heat from exhaust gases and steam systems to improve plant energy efficiency.

• Steam Drums & Separators: Core components of waste heat boilers.

• Flue Gas Heat Exchangers: Transfer thermal energy from hot exhaust gases.

• Condensate Recovery Tanks: Collect and reuse steam condensate.

Key Specs:

• Temperature: Up to 850°C

• Materials: 15CrMoR, ND steel, 316Ti

• Standards: GB151, TEMA, ASME