a coal sowing device
A technology of falling coal and inclined tubes is applied in the field of circulating fluidized bed boilers, which can solve the problems of accelerating the flow rate of coal materials, long conveying distance, and easy return of flue gas, so as to achieve the effect of improving dynamic pressure.
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Embodiment 1
[0056] A coal sowing device, comprising a straight coal drop pipe 1, a first inclined coal drop pipe 2, a second inclined coal drop pipe 3, a static pressure sealed air chamber 4, a sealed air nozzle 5, a coal broadcast air chamber 6 and a sowing The coal outlet 7, the coal falling straight pipe 1 communicates with the second coal falling inclined pipe 3 through the first coal falling inclined pipe 2, the static pressure sealing air chamber 4 is connected with one end of the second coal falling inclined pipe 3, the second coal falling inclined pipe The other end of the pipe 3 communicates with the coal sowing port 7 through the coal sowing air chamber 6, the sealing air nozzle 5 is located in the second coal falling inclined pipe 3, the first coal falling inclined pipe 2 is in the shape of a truncated cone, and the first coal falling inclined The area of the upper bottom surface of the pipe 2 is larger than the area of the lower bottom surface. The sealing air nozzle 5 is s...
Embodiment 2
[0060] A coal sowing device, comprising a straight coal drop pipe 1, a first inclined coal drop pipe 2, a second inclined coal drop pipe 3, a static pressure sealed air chamber 4, a sealed air nozzle 5, a coal broadcast air chamber 6 and a sowing The coal outlet 7, the coal falling straight pipe 1 communicates with the second coal falling inclined pipe 3 through the first coal falling inclined pipe 2, the static pressure sealing air chamber 4 is connected with one end of the second coal falling inclined pipe 3, the second coal falling inclined pipe The other end of the pipe 3 communicates with the coal sowing port 7 through the coal sowing air chamber 6, the sealing air nozzle 5 is located in the second coal falling inclined pipe 3, the first coal falling inclined pipe 2 is in the shape of a truncated cone, and the first coal falling inclined The area of the upper bottom surface of the pipe 2 is larger than the area of the lower bottom surface. The sealing air nozzle 5 is s...
Embodiment 3
[0065]A coal sowing device, comprising a straight coal drop pipe 1, a first inclined coal drop pipe 2, a second inclined coal drop pipe 3, a static pressure sealed air chamber 4, a sealed air nozzle 5, a coal broadcast air chamber 6 and a sowing The coal outlet 7, the coal falling straight pipe 1 communicates with the second coal falling inclined pipe 3 through the first coal falling inclined pipe 2, the static pressure sealing air chamber 4 is connected with one end of the second coal falling inclined pipe 3, the second coal falling inclined pipe The other end of the pipe 3 communicates with the coal sowing port 7 through the coal sowing air chamber 6, the sealing air nozzle 5 is located in the second coal falling inclined pipe 3, the first coal falling inclined pipe 2 is in the shape of a truncated cone, and the first coal falling inclined The area of the upper bottom surface of the pipe 2 is larger than the area of the lower bottom surface. The sealing air nozzle 5 is se...
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