Novel circulating fluidized bed material returning anti-blocking device and using method thereof

Abstract

The invention discloses a novel circulating fluidized bed material returning anti-blocking device and a using method thereof. The novel circulating fluidized bed material returning anti-blocking device comprises a material returning box assembly, a top cover, a photoelectric sensor, a driving motor and a stirrer assembly, the top cover is arranged at the top of the material returning box assembly and distributed in a bilateral symmetry mode, the top cover is arranged at the top of the material returning box assembly, and the photoelectric sensor is arranged at the bottom of the top cover and is arranged on the inner side of the material returning box assembly. The effect of effectively limiting the material returning amount is achieved through cooperation between the material returning box and the top cover, the problem that the material returning amount is not easy to control is solved, and through cooperation between the material returning box and a separation plate, the effect of effectively performing returned material separation control is achieved, the problem that a material returning opening is prone to being blocked due to the fact that separation is not achieved during material returning in the past is solved, the effect of evenly cutting, separating and stirring large-particle returned materials is achieved through cooperation of stirring blades and cutting blades, and the problem that a channel is blocked due to the fact that large particles are not crushed when the returning amount is large in the past is solved.

Description

technical field [0001] The invention relates to the technical field of fluidized bed equipment, more specifically, it relates to a novel circulating fluidized bed return material anti-blocking device and its application method. Background technique [0002] Circulating fluidized bed boilers generally have two coal feeding methods: the front wall coal feeding and the rear wall feeder feeding coal. The front wall coal feeding generally adopts the coal feeder to feed coal, which often causes serious wear and tear, and often needs regular feeding. The coal feeder is used for maintenance, and the back wall feeder is often used to feed the coal. The main purpose is not only to return the unburned fly ash flow to the furnace for re-burning, but also to prevent the coal from being unable to feed coal in time when the front wall feeds coal fails. At the same time, the traditional fluidized bed feeder adopts U-shaped structure, its structure is relatively complex, and the resistance t...

AI Technical Summary

Problems solved by technology

[0002] Circulating fluidized bed boilers generally have two coal feeding methods: the front wall coal feeding and the rear wall feeder feeding coal. The front wall coal feeding generally adopts the coal feeder to feed coal, which often causes serious wear and tear, and often needs regular feeding. The coal feeder is used for maintenance, and the back wall feeder is often used to feed the coal. The main purpose is not only to return the unburned fly ash flow to the furnace for re-burning, but also to prevent the coal from being unable to feed coal in time when the front wall feeds coal fails. At the same time, the traditional fluidized bed feeder adopts U-shaped structure, its structure is relatively complex, and the resistance to materials is relatively large, and it can only be used in combination with the cyclone separator. If it leaves the positive pressure head formed by the cyclone separator Working conditions, the traditional U-shaped feeding device is easy to block, the feeding is not smooth, it cannot work normally, and the overall effect is not good

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