Method and device for blast furnace to blow coal powder
A pulverized coal and blast furnace technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve the problems of large heat dissipation, large heat loss, and shortened service life of straight blowing pipes, and achieve enhanced heat and mass transfer, increased residence time, and service life long effect
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[0031] Such as figure 1 As shown, a method of injecting pulverized coal into a blast furnace is to insert each short spray gun 4 into each mounting seat 5 on the straight blowing pipe 3 of each tuyere 1, and the pulverized coal injected into the blast furnace is from each mounting seat 5. The injection inlet 6 opened from the side enters, and then the coal injection hole 7 opened on the tube wall of the short spray gun 4 directly to the injection inlet 6 reaches the short spray gun 4, and then the coal powder It is blown into the hot air, and finally enters the blast furnace through the tuyere 1 together with the hot air.
[0032] Such as figure 1 with image 3 As shown, a device for injecting pulverized coal into a blast furnace is composed of at least a straight blowing pipe 3, a short spray gun 4, a mounting seat 5, a ball valve 9, a locking device 10, a coal conveying branch pipe 11, a distributor 12, a small ball valve 14, and coal conveying The pipe 13 and the inlet connect...
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