Device and method for coal bunker anti-clogging of circulating fluidized bed boiler

Abstract

The invention discloses a coal blockage preventing device for a bunker of a circulating fluidized bed boiler. By means of the coal blockage preventing device, the phenomenon of coal blockage of boiler bunker bodies can be effectively prevented from happening. The device is used for preventing coal blockage of the bunker bodies. Each bunker body comprises an upper bunker body, a small bunker body and a coal feeder which are arranged from top to bottom in a communication manner, wherein the small bunker body directly communicates with the coal feeder. Each small bunker body is provided with a loosening machine in an assembly manner. An industrial camera is arranged above each upper bunker body. The loosening machines and the industrial cameras communicate with control cabinets arranged outside the bunker bodies.

Description

technical field [0001] The invention relates to a coal blocking prevention device and method for a circulating fluidized bed boiler, which is specifically used for preventing coal blocking in a coal bunker. Background technique [0002] The normal operation of the circulating fluidized bed boiler must ensure continuous and uniform coal feeding by the coal feeder. However, due to various reasons such as: ratholes formed by the coal in the raw coal shed, the lower coal, the serious blockage of the lower coal pipe, or other reasons, the coal feeder cannot operate for a long period of time, the boiler combustion is abnormal, and in severe cases, it is forced to stop Transport, coal feeder burning and other vicious accidents seriously affect the safety and economy of the unit. [0003] In the prior art, the general situation of this type of boiler equipment is as follows: [0004] The furnace is designed to burn bituminous coal. The circulating fluidized bed combustion method ...

AI Technical Summary

Problems solved by technology

(1) The small coal hopper is designed as a square cone. The four corners of the inner wall are under less pressure from the upper coal seam, forming a dead angle of flow and coal deposits. The coal deposits form a certain friction due to the coal flowing in the middle, which affects the middle Lower coal

(2) The transition between the small coal hopper and the inner wall of the connecting pipe is not smooth, which restricts the flow of the coal seam

(3) There is an angle between the three small coal hoppers in the lower part of the coal bunker and the large coal bunker in the upper part, which disperses the pressure of the raw coal in the upper part of the coal bunker and hinders the flow of the coal seam

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