Low-temperature gasification device for low-order fuel based on spiral pyrolyzer and fluidized bed gasifier
A technology of low-temperature gasification and pyrolyzer, applied in the details of gasification device, gasification process, gasification of granular/powdered fuel, etc., can solve the problems of tar removal without consideration, high investment and operating costs, cold gasification efficiency Reduce the problem of reduction, achieve the effect of reducing tar content, prolonging residence time and high carbon conversion rate
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specific Embodiment approach 1
[0032] Specific implementation mode one: as figure 1 , Figure 4 As shown, this embodiment discloses a low-stage fuel low-temperature gasification device based on a spiral pyrolyzer and a fluidized bed gasifier, which consists of a storage system 1, a spiral pyrolysis system 2, a fluidized bed gasification System 3 and cyclone separation system 4;
[0033] The storage system 1 includes a silo 11, an air lock 12, a gear box 13 and a motor 14, and the spiral pyrolysis system 2 includes a primary spiral pyrolyzer 21, a coupling 22 and a secondary spiral Pyrolyzer 23, the fluidized bed gasification system 3 includes a fluidized bed gasifier 31, an air intake system 32 and a slag discharge pipe 33, and the cyclone separation system 4 includes a spiral feeder 43, a secondary A return pipe 44, at least one cyclone separator 41 and at least one primary return pipe 42;
[0034] The air shutoff device 12 is arranged at the lower part of the silo 11, the power output shaft of the moto...
specific Embodiment approach 2
[0041] Specific implementation mode two: as figure 1 As shown, this embodiment is a further description of Embodiment 1. The angle between the bottom surface of the spiral pyrolysis system 2 and the horizontal plane is α, and α=5°~45°. Ensure the fullness of the pyrolysis product in the spiral pyrolyzer, so that the volatile matter can only diffuse out through the solid product layer, so as to fully react with it.
specific Embodiment approach 3
[0042] Specific implementation mode three: as figure 1 As shown, this embodiment is a further description of specific embodiment one. Suppose the length of the spiral pyrolysis system 2 is L, and the initial position of the length of the spiral pyrolysis system 2 is located at the fuel of the first-stage spiral pyrolysis device 21. At the inlet end, the docking position of the outer cylinder of the first-stage spiral pyrolyzer 21 and the outer cylinder of the second-stage spiral pyrolyzer 23 is set in the 1 / 3L area of the spiral pyrolysis system 2 in the length direction. Ensure sufficient contact and heat transfer between the heat carrier and the input low-order fuel in the secondary spiral pyrolyzer 23 .
[0043] Specific implementation mode four: as figure 1 As shown, this embodiment is a further description of the third embodiment, and the water vapor inlet 23-1 is set close to the fuel inlet.
[0044] It is used to make up for the lack of water in the gas phase (inclu...
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