Blast furnace oxygen adding coal injection method and apparatus thereof
A technology for blast furnaces and blowing pipes, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems affecting furnace conditions, low coal injection ratio, poor combustibility, etc., to achieve easy practical operation, low oxygen consumption, and low fuel ratio Effect
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[0014] The structure of the device of the present invention is as follows: the pressure-stabilizing nitrogen tank 4 communicates with the blowing tank 6 through the nitrogen manual valve 5, the blowing tank 6 communicates with the blast furnace 7 through the blowing pipe, the air supply nitrogen tank 14 passes through the nitrogen manual valve 5, and the nitrogen flow meter 13 is connected with the air supply main pipe, and the air supply main pipe is connected with the blowing pipe. It is characterized in that: a high-pressure oxygen pipe 3 is added to pass through the one-way valve 2, the quick-cut solenoid valve 8, the oxygen flow meter 9, the electromagnetic regulating valve 10, and the oxygen manual valve. 11 communicates with the air supply main pipe, and the air supply main pipe is bypassed to connect an oxygen analyzer 12 for oxygen supply detection, and the pipeline between the nitrogen manual valve 5 and the nitrogen gas flowmeter 13 is connected to an oxygen analyzer ...
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