Precision orifice insert for regulating gas flow in blast furnace burner nozzles
A precision-engineered orifice insert is a critical flow control component installed within blast furnace gas burner nozzles. It features a calibrated orifice that precisely meters and regulates the flow rate of blast furnace gas (BFG) to ensure optimal combustion efficiency, flame stability, and temperature control in industrial heating applications. The insert is designed to withstand high temperatures, corrosive gas compositions, and thermal cycling.
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It precisely meters and regulates the flow of blast furnace gas to the burner, ensuring stable combustion, optimal flame characteristics, and efficient heat output by controlling the gas pressure and flow rate.
Blast furnace gas burners operate at extreme temperatures (often above 800°C) and expose components to corrosive gases. Nickel-chromium alloys like Inconel provide essential resistance to oxidation, carburization, thermal fatigue, and mechanical degradation under these harsh conditions.
The diameter is calculated based on required gas flow rate, upstream/downstream pressures, gas composition, and temperature, following flow equations from standards like ISO 5167. It is precision-machined to tight tolerances (typically ±0.05 mm) to ensure accurate flow control.
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