Method for improving coal-slime-whole-burning circulating fluidized bed boiler efficiency

The invention discloses a method for improving coal-slime-whole-burning circulating fluidized bed boiler efficiency. The original outlet size of a hearth is reduced with a reduction ratio of 1:(0.80 to 0.91). An original boiler is transformed to solve the above problems in coal-slime-whole-burning o...

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Bibliographic Details
Main Authors GAO WEI, ZHAO CHUANHONG
Format Patent
LanguageEnglish
Published 30.12.2015
Subjects
AIR
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN
WEAPONS
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Summary:The invention discloses a method for improving coal-slime-whole-burning circulating fluidized bed boiler efficiency. The original outlet size of a hearth is reduced with a reduction ratio of 1:(0.80 to 0.91). An original boiler is transformed to solve the above problems in coal-slime-whole-burning of the circulating fluidized bed boiler, when the load carrying capability is increased to rated load and full load, the bed temperature is restored to be normal temperature, and a returning amount is also obviously increased. The returning temperature is 970 to 980 DEG C, particularly the concentration of nitric oxides in discharged smoke is lowered to about 100mg/m , and the smoke denitrification cost is reduced. The usage amount of ammonium hydroxide is greatly reduced, and more cost is reduced each year.
Bibliography:Application Number: CN20151698279