Cylindrical type cowl with steps for circulating fluidized bed boiler

The utility model discloses a cylindrical type cowl with steps for a circulating fluidized bed boiler. The cylindrical type cowl comprises a pipe insertion end, a cylindrical cowl main body and a main air duct arranged inside the cowl main body, wherein a plurality of small cowl holes are formed in...

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Bibliographic Details
Main Authors CAO LIANXIN, CAO SU
Format Patent
LanguageChinese
English
Published 16.04.2014
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 utility model discloses a cylindrical type cowl with steps for a circulating fluidized bed boiler. The cylindrical type cowl comprises a pipe insertion end, a cylindrical cowl main body and a main air duct arranged inside the cowl main body, wherein a plurality of small cowl holes are formed in the upper end of the cowl main body and are arranged by downward inclining by 15-30 degrees. The square steps are arranged on a traditional cylindrical type cowl with steps and the small cowl holes are obliquely designed, so that combusted coal gangue of the boiler cannot generate crude particle layering precipitation phenomenon, the problems that when being used for combusting inferior coal such as the coal gangue with large specific weight, the boiler is bad in fluidization quality, unstable to combust and the like can be effectively solved, the phenomenon that the airflow hedging among the small cowl holes causes the offset of kinetic energy and the like can be avoided, the fluidization quality is greatly improv
Bibliography:Application Number: CN20132626923U