Coke block removal slag cooler for circulating fluidized bed boiler

Abstract

The invention discloses a coke block removal slag cooler for a circulating fluidized bed boiler. The slag cooler structurally comprises a feeding pipe, a coke block removal slag cooler body, a slag cooler air cap, a water pipe, and a supporting base; the feeding pipe is arranged on the head end of the coke block removal slag cooler body in an embedded manner, the slag cooler air cap is arranged atthe tail end of the coke block removal slag cooler body, through a coal gangue feeding removal mechanism, large coal gangue is removed, entering of coal gangue is reduced, generation of coke blocks is reduced, meanwhile, fine fuel enters the coke block removal slag cooler body to be combusted, weight of the coal gangue drives an inner wall coke block remover to work, through the inner wall coke block remover, coke blocks on the inner wall and an air distribution pipe is removed, reduction of fluidization air volume is avoided, work efficiency of the circulating fluidized bed boiler is kept, meanwhile, after the fluidization air volume is increased, through an air cap impact buffer, part of impact force is reduced, the slag cooler air cap is subjected to buffer protection, wear of the slagcooler air cap is reduced, and inner leakage of the slag cooler is avoided.

Description

technical field [0001] The invention relates to the field of circulating fluidized bed equipment, in particular to a coke block removing slag cooler. Background technique [0002] The circulating fluidized bed boiler is a device that is further improved on the bubbling fluidized bed boiler and has higher working efficiency. The slag cooler is an important part to ensure the safe and efficient operation of the circulating fluidized bed boiler. However, the current slag cooler There are the following disadvantages: [0003] When there is too much coal gangue and sundries inside the combustion material, the amount of slag discharge increases, resulting in too large coal particles, which are difficult to be blown and flowed by the wind, resulting in coking inside the furnace, and the coke blocks enter the selection chamber of the slag cooler , the fluidization air volume inside the selection chamber is reduced, low-temperature bonding occurs, and large coke blocks adhere to the...

AI Technical Summary

Problems solved by technology

[0003] When there is too much coal gangue and sundries inside the combustion material, the amount of slag discharge increases, resulting in too large coal particles, which are difficult to be blown and flowed by the wind, resulting in coking inside the furnace, and the coke blocks enter the selection chamber of the slag cooler , the fluidization air volume inside the selection chamber is reduced, low-temperature bonding occurs, and large coke pieces adhere to the inside of the slag cooler, which reduces the working efficiency of the circulating fluidized bed boiler; and when the inside of the slag cooler cannot be fluidized normally, it is necessary to add The large fluidization air volume makes the flow speed of the slag material faster, which increases the impact force on the hood of the slag cooler, increases the wear of the hood, and causes internal leakage of the slag cooler.

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