Injection device, blast furnace injection system and injection method

Abstract

This invention relates to the field of blast furnace injection technology, and particularly to an injection device, a blast furnace injection system, and an injection method. The injection device includes an injection head and a second injection channel. The injection head has a first injection channel extending axially through its interior. At least a portion of the second injection channel is disposed within the injection head and separated from the first injection channel. The second injection channel is located outside the first injection channel and has a first injection outlet, which is located on the outer wall of the injection head. The advantages include: the second injection channel being located outside the first injection channel, and the first injection outlet being located on the outer wall of the injection head, allows the gases injected through the first and second injection channels to operate independently. Injecting hydrogen-rich gas and hot blast into the blast furnace through the first and second injection channels respectively reduces the impact of the hydrogen-rich gas on the hot blast, thereby improving the injection effect of the hydrogen-rich gas and the blast furnace output.

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