Regarding the separator in circulating fluidized bed boilers
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This post was last edited by Pitbull on 2018-5-2 at 14:39. During this visit to various boiler factories in Sichuan, some of them used eccentric center tanks for their separators, while others used concentric center tanks. What is the difference between these two? Are there any people who have experience with them in practical applications? Please share your insights! ! !
Ours has a concentric central cylinder; does the original poster work at a refining or chemical plant’s own power plant?
Based on the installation position of the central cylinder in the cyclone, it can be divided into installation at the exact center and eccentric installation. 1. The central cylinder serves as the smoke outlet at the upper part of the cyclone separator, allowing smoke containing small particles with a small radius of rotation to exit directly through it. When the center of the central cylinder aligns with the center of the rotating separator, this is considered installation at the exact center of the cylinder. The advantage is that the smoke particles passing through the central cylinder are uniform, but the disadvantage is that, due to the need to consider the flow rate through the central cylinder, it often requires a certain diameter. When positioned in the exact center, the central cylinder tends to be exposed to the direct scouring direction of the flue gas at the inlet of the separator, resulting in increased wear on the central cylinder. 2. The eccentric arrangement of the central cylinder is primarily represented by Dongguo; its characteristic is that the central cylinder is offset from the scouring direction of the flue gas inlet at the separator, and the center of the central cylinder does not coincide with the center of the cyclone separator – this is what constitutes the eccentric arrangement of the central cylinder. The advantage is that it reduces wear on the central tube, but the disadvantage is that due to the eccentric arrangement, some larger particles that should otherwise be kept outside the central tube are able to pass through it, thereby increasing wear on heat exchange systems such as the superheater located behind the flue.
It’s a self-owned power plant, but it is used for the deep processing of oils, fats, and grains