Novel secondary air duct structure of circulating fluidized bed boiler

The utility model relates to a novel circulating fluidized bed boiler secondary air duct structure which comprises an air bellow (1), an expansion joint (6) and a butterfly valve (7), the air bellow (1) is fixedly installed at the lower end of a hearth, a steel partition plate (2) dividing the inter...

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Main Authors CHANG JIALEI, DUAN XUQIANG, LIU QINGYING, DI YAJUAN, MA LIN, NIU CAN, GAO YUAN, ZHOU XU
Format Patent
LanguageChinese
English
Published 25.01.2022
Subjects
AIR
AIR SUPPLY
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
DRAUGHT-INDUCING
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN
SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS
WEAPONS
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Summary:The utility model relates to a novel circulating fluidized bed boiler secondary air duct structure which comprises an air bellow (1), an expansion joint (6) and a butterfly valve (7), the air bellow (1) is fixedly installed at the lower end of a hearth, a steel partition plate (2) dividing the interior of the air bellow (1) into an upper air cavity and a lower air cavity is arranged on the middle layer of the inner side of the air bellow (1), and a rectangular through hole is formed in the surface of the air bellow (1) to install an air duct inlet (3). More than two upper air pipes (4) are installed in an upper air cavity of the air bellow (1), more than two lower air pipes (5) are installed in a lower air cavity of the air bellow (1), the lower ends of the upper air pipes (4) are connected with the upper portion of a hearth, the lower ends of the lower air pipes (5) are connected with the lower portion of the hearth, and the upper air pipes (4) and the lower air pipes (5) are sequentially provided with expan
Bibliography:Application Number: CN202122207427U