Fluidized bed reactor gases distributing plate

Abstract

The gas distributing board for fluidized bed reactor has air intake openings and each air intake opening has one air distribution button welded. The air distribution button has two or more circular or rectangular jet holes or jet slots with equivalent diameter of 0.2-0.6 time that of air intake opening and jetting direction in an angle of 0-75 deg to the horizontal line. Inside the air distribution button and over the air intake opening, there is one circular, squared or conic leakproof weir. The gas distributing board of the present invention has the advantages of no deposit of large grains; one gas film layer formed on the surface to raise material for full fluidizing; raised fluidized bed stability and convenient and flexible air distribution button cleaning and replacement.

Description

technical field [0001] The invention relates to a fluidized bed reactor, in particular to a gas distribution plate of a fluidized bed reactor. Background technique [0002] Distributor plates are an important part of industrial fluidized bed equipment. Although it has a direct effect range of only 0.2-0.3 meters on the entire fluidized bed, it has a decisive influence on the fluidized state quality of the entire fluidized bed and the operating performance of the reactor. Specifically, the functions of the fluidized bed distribution plate include: [0003] 1) Distribute the fluid evenly while minimizing the energy consumption of the fluid passing through the distribution plate. This can be achieved by adjusting the opening ratio of the distribution plate or the ratio of plate pressure drop to bed pressure drop, and selecting appropriate pre-distribution means. [0004] 2) Ensure that good gas-solid contact conditions are formed near the distributi...

AI Technical Summary

Problems solved by technology

[0008] 1) Due to the fixed gas volume, the horizontal injection port of the hood is too large, resulting in insufficient injection gas velocity, and the range of action of each hood on the distribution plate is limited, which makes it difficult to ensure that large particles do not deposit on the plate, and the anti-deposition ability is not good. strong

[0009] 2) The hood structure of the distribution plate in the prior art is not stable enough in operation, and dead holes and dead zones often occur

[0010] 3) The structure of the distribution plate in the prior art cannot form a layer of gas film on the surface of the distribution plate, and cannot allow the fluidized material to react in the gas film, which affects the improvement of the reaction yield

[0011] 4) The arrangement of the air caps of the distribution plate in the prior art cannot completely eliminate the occurrence of dead zones, which also affects the anti-deposition ability of the distribution plate and affects the improvement of the reaction yield

[0012] 5) The distribution plate in the prior art cannot resist being blocked by active substances for a long time, thus affecting the production cycle of the device

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