Top suction type comprehensive self dust suppression and recycling system of coal fired boiler

Abstract

A top suction type comprehensive self dust suppression and recycling system of a coal fired boiler comprises an air cooling dry type slag conveying machine, a slag bin mounted below the top end of the inclined segment of a machine body of the air cooling dry type slag conveying machine, a discharging device mounted at the bottom of the slag bin, a bulk machine mounted on the lower portion of the discharging device, a sub dust suction pipe mounted on an air outlet in the upper portion of the bulk machine, a mother dust suction pipe mounted on the sub dust suction pipe, a porous sub dust suction pipe mounted on the lower portion of the mother dust suction pipe and provided with multiple dust suction small holes, an air amount adjusting valve, an air amount flowmeter, and a main air pipe, wherein a machine body horizontal segment of the air cooling dry type slag conveying machine is mounted at the bottom of the coal fired boiler, the air amount adjusting valve and the air amount flowmeter are sequentially mounted on the mother dust suction pipe from bottom to top, one end of the main air pipe is arranged on the machine body of the air cooling dry type slag conveying machine, and the main air pipe is connected with the top end of the mother dust suction pipe. The top suction type comprehensive self dust suppression and recycling system of the coal fired boiler is long in service life, capable of recycling fly ash, and removing secondary pollution, and environment-friendly, and can be widely applied to a coal fired boiler bottom ash dry discharging system.

Description

technical field [0001] The invention relates to a top-suction all-round self-dust suppression and recovery system for a coal-fired boiler, which can be widely used in the bottom slag dry slag discharge system of the coal-fired boiler. Background technique [0002] In the existing coal-fired boiler bottom slag dry slag discharge system, in order to reduce the impact of fly ash on the environment, the bulk machine is equipped with a fan negative pressure dust suppression device; the main shortcomings of the fan negative pressure dust suppression are: first, the ash wears the fan seriously, The equipment has a low service life and a large amount of maintenance. The second is that the outlet of the fan is connected to the slag bin to recover the fly ash. Therefore, the slag bin needs to be equipped with a bag filter, which increases the system cost and energy consumption. The third is that a large amount of cold air enters the dry slag system, which is uncontrollable. Moreover...

AI Technical Summary

Problems solved by technology

[0002] In the existing coal-fired boiler bottom slag dry slag discharge system, in order to reduce the impact of fly ash on the environment, the bulk machine is equipped with a fan negative pressure dust suppression device; the main shortcomings of the fan negative pressure dust suppression are: first, the ash wears the fan seriously, Low equipment life and high maintenance

The second is that the outlet of the fan is connected to the slag bin to recover the fly ash, so the slag bin needs to add a bag filter, which increases the system cost and energy consumption

Third, a large amount of cold air enters the dry slag system, which is uncontrollable

Moreover, during loading, under the action of gravity, the secondary dust caused by the impact of the ash on the dump truck body will cause major pollution, and the secondary pollution has become the main environmental protection problem of the dry slag system

Images