Study on Transformation Technology of 350MW "W" Flame Boiler All Burns Bituminous Coal
With "W" flame boiler of a power plant,the technical transformation of boiler coal changed from anthracite into bituminous coal.The results of coal mixing show that the coal quality,the existing coal combustion of Shenhua boiler and auxiliary equipment seriously affect the operation safety and economy of the unit.In view of the problems existing in all-burning Shenhua bituminous coal,the transformation plan is formulated,including:powder making system transformation,combustion system transformation,high temperature heating surface transformation,water cooling wall transformation,primary fan transformation,etc.This scheme is expected to achieve a safe,economic and stable full-combustion Shenhua bituminous coal,and the NOx emission concentration of economizer outlet can be controlled below 360mg/Nm3(6％02,standard dry base),low load stable combustion can reach 30％BRL load,and the boiler efficiency should not be less than 93.0％after transformation.
type W flame boilerbituminous coalburnerrenovation researchboiler efficiencyNOx
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