The steel mill gas replenishment regulator (also known as a gas replenisher, booster, or secondary gas replenisher) is a key component of dense-phase pneumatic conveying systems, primarily used to regulate the concentration and stability of pulverized coal transportation.
Applicable Media: Pulverized coal + nitrogen/air; Moisture content must be <3%.
Design Pressure: 1.0~2.5 MPa; High-pressure type is used for long-distance conveying.
Design Temperature: ≤100°C; Prevents high-temperature coking.
Connection Size: - Main channel: DN50~DN100
- Gas replenishment end: DN50 (fitted with DN80 main pipe); Gas replenishment flow rate is approximately 1200 m3/h (DN80).

Adjustment Range: Gas flow adjustment ratio up to 1:5; Meets requirements for large flow fluctuations.
Performance Advantages and Technological Evolution
Technological Breakthroughs:
Swirl flow channel design replaces straight taper annular gaps, improving mixing efficiency by 60% and reducing energy consumption by 15%;
Wear-resistant ceramic lining extends service life to over 3 years, reducing maintenance costs by 30%.
Comparison with Traditional Solutions:
Type: Advantages; Limitations
Adjustable Type: Precise flow control, adaptable to complex working conditions; Complex structure.

Non-adjustable Type: Easy maintenance, quick replacement; Limited application scenarios.
Selection and Maintenance Guidelines
Selection Guide:
Blast furnace pulverized coal injection system: Prioritize adjustable swirl gas replenishers (e.g., model QYBQTJ-16), matching DN80 main pipe + DN50 gas replenishment end;
Short-distance conveying: Optional non-adjustable type to reduce costs.