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Development and Application of Pulverized Coal Regulator in Beater Mill 

SHI Hong-qi;SUN Hai-tian  
In view of sevious economics and stability problems of boiler combustion when the boiler equipped with beatermills bumed blended coals, the pulverized coal regulator of boiler was researched and developed on the bases of the present situation of coal pulverizing system with beater mill and the flow charaeteristics of gas and solid of gas and solid phases.The pulverizedcoal regUlator has the function to transfer coarse particles in the bottom primary air to the middle primary air.Since theywere applied in tWo 1 021 t/h boilers in Shuangliao Power Plant. the coal content in the bottom slag has been reduced,burn-out rate raised, and temperatures of main steam and reheat steam have been brought under control.
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