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Safety Technology For Coal Powder Injection System in Ironmaking Production

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Jun 17, 2024

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The biggest danger of the blast furnace coal powder injection system is the possibility of explosion and fire.

In order to ensure that coal powder can be blown into the blast furnace without causing hot air to reverse into the injection system, the injection tank pressure should be determined based on the blast furnace tuyere pressure. A check valve and an automatic shut-off valve should be installed between the mixer and the coal powder conveying pipeline. A check valve should be installed on the branch pipe of the coal injection port. Due to the extremely fine coal powder, the coal storage time in the injection tank and coal storage tank should not exceed 8-12 hours when the injection is stopped. The coal powder flow rate must be greater than 18m/s. The inner wall of the tank should be smooth, with curved transitions, and the pipeline should avoid right angle bends.

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