Pulse type slag discharging device of biomass direct combustion boiler

Abstract

The invention provides a pulse type slag discharging device of a biomass direct combustion boiler. The slag discharging device comprises a slag discharging pipe (10), a slag discharging pipe (10) is connected with a slag discharging port (2) at the bottom of a circulating fluidized bed (2), a vibrating air cannon device is arranged on one side of the bottom of the circulating fluidized bed (2), aplurality of loosening and conveying air source mechanisms are arranged in the middle of the slag discharging pipe (10), and an air control baffle device is arranged at an outlet of the bottom of theslag discharging pipe (10). According to the device, the slag is discharged on line and the slag discharging device operated manually is replaced in the operation process of the biomass direct-combustion circulating fluidized bed boiler which can be effectively realized, so that manpower and material resources are reduced, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of biomass direct-fired boilers, and in particular relates to a pulse slagging device at the bottom of a biomass direct-fired boiler. Background technique [0002] Most biomass power plant boilers use circulating fluidized bed boilers, which have the advantages of being able to burn various biomass, high combustion efficiency, and more types of combustion than chain furnaces. However, due to the variety of applicable fuels, there are many problems. For example, the bricks, stones and other sundries carried by the fuel will bring safety hazards to the safe operation of the boiler. During the operation, as the fuel is continuously supplied to the boiler, the furnace The accumulation of internal impurities is increasing, which needs to be removed in time, but the large impurities entrained in the fuel not only cannot be burned and decomposed, but also block the slag discharge pipe, so that the slag after fuel c...

AI Technical Summary

Problems solved by technology

However, due to the variety of applicable fuels, there are many problems. For example, the bricks, stones and other sundries carried by the fuel will bring safety hazards to the safe operation of the boiler. During the operation, as the fuel is continuously supplied to the boiler, the furnace The accumulation of internal impurities is increasing, which needs to be removed in time, but the large impurities in the fuel can not only burn and decompose, but also block the slag discharge pipe, so that the slag after fuel combustion cannot be removed in time

When the boiler needs to discharge slag, there is a great potential safety hazard in the manual operation on site, and it cannot meet the stable operating parameters of the boiler, resulting in deterioration of the operating conditions

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