Method and apparatus for removing viscous ash deposit in boiler

Abstract

This invention relates to one method and device to remove adhesive dust in oven, wherein the method comprises the following steps: Joining the particles from oven tail smoke channel or remaining oven top along with smoke to tube beam to take off its surface dust; depositing the dust and particles one the smoke channel bottom to enter flow bed filtering device; the air outside smoke channel entering flow chamber to flow the particle and dust from flow chamber top to smoke channel back section; the particle are sent to the feed back device through the flow chamber bottom discharge screw through gas force transmission system or lift machine to send to materials bin; if the particle and dust are severely stuck, then from bin screw to re-fill particle from the side exhaust system by the bin.

Description

technical field

[0001] The invention relates to a boiler soot blowing method and a device thereof, in particular to a method and a device for removing viscous ash deposits in boiler tail flue by using particles. Background technique

[0002] Usually, there will be dust accumulation on the rear heating surface of the boiler or on the tube bundle of the tube heat recovery boiler. These ash deposits will affect the heat exchange effect of the boiler and reduce the efficiency of the boiler. Therefore, when the boiler is running, it is necessary to intermittently or continuously remove the ash deposits on the rear heating surface and the heat exchange tube bundle.

[0003] At present, the commonly used ash removal methods mainly include acoustic soot blowing, steam soot blowing and pulse soot blowing. However, for garbage incinerators, biomass-fired boilers, and some circulating fluidized bed boilers, due to the high content of alkali metals in the ash deposits, the ash deposits...

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