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How does the Dry Slag Machine Mesh Belt Mesh Belt work?


The Dry Slag Machine Mesh Belt is the core equipment of the dry slag removal system. It is called dry slag removal machine, dry slag removal machine, dry conveyor, etc. The boiler bottom slag removal system refers to a comprehensive processing system that collects, cools, transports and stores the bottom slag discharged from the boiler furnace bottom. The dry slag removal system refers to a furnace bottom ash treatment system that relies on boiler negative pressure to introduce an appropriate amount of controlled ambient air to cool the ash.

The air-cooled dry slag removal system is an air-cooled dry slag conveyor that operates continuously. High-temperature slag continuously falls on the conveyor belt of the slag conveyor. The high-temperature ash and slag moves at low speed on the conveyor belt. Under negative pressure (for pulverized coal boilers) In other words, under the action of the furnace (the furnace is under negative pressure in its normal operating state), a small amount of controlled ambient cold air enters the inside of the air-cooled dry slag remover in the reverse direction, so that the ash and slag are gradually cooled by the wind on the conveyor steel belt, and the combustion is gradually completed. The cold air fully exchanges heat with the high-temperature ash and slag. The air absorbs the radiant heat of the boiler and the sensible heat of the ash and slag. The air temperature rises to about 340°C (equivalent to the boiler secondary air supply temperature) and enters the furnace. The cooling temperature of the slag It will drop to about 100~200℃.

The influence of the cooling air volume on the boiler air inlet volume is generally controlled within the allowable air excess coefficient, so the heated air can be transported to the furnace without affecting the normal operation of the boiler. However, if the boiler air excess coefficient requirements are strict, the hot air can also be transported to the boiler air supply system for reuse. The cooling air volume usually requires ≯ 1% of the total boiler combustion air volume; when the air temperature entering the furnace is >340°C, the cooling air volume can be increased to 1.5~2%.


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