PULVERIZED COAL FIRED BOILER WITH WALL-ATTACHMENT SECONDARY AIR AND GRID OVERFIRE AIR

A pulverized coal fired boiler with wall-attachment secondary air and grid overfire air. Main combustors (4) having primary air nozzles (6), secondary air nozzles (7), and close coupled overfire air nozzles (5) arranged at interval along a height direction of a hearth (1) are disposed at four corner...

Full description

Saved in:
Bibliographic Details
Main Authors LI, MING, DENG, YUANKAI, XU, GUOFENG, RONG, WEIGUO, WEI, TANRONG, HOU, BO, LI, LEI, ZHANG, YONGHE, CUI, JINLEI
Format Patent
LanguageChinese
English
French
Published 16.01.2014
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
Online AccessGet full text

Cover

More Information
Summary:A pulverized coal fired boiler with wall-attachment secondary air and grid overfire air. Main combustors (4) having primary air nozzles (6), secondary air nozzles (7), and close coupled overfire air nozzles (5) arranged at interval along a height direction of a hearth (1) are disposed at four corners of the hearth (1). A bidirectional wall-attachment secondary air nozzle (11) and a one-way wall-attachment secondary air nozzle (10) are arranged from bottom to top in a main combustion area (111) where the main combustor (4) is located. A one-way wall-attachment secondary air nozzle (9) is provided in a reduction area (112) between the main combustor (4) and a top overfire air nozzle. A grid overfire air nozzle (8) is provided in a burn-off area (113) where overfire air is located. The pulverized coal fired boiler with wall-attachment secondary air and grid overfire air reduces the amount of NO generated in the hearth (1), improves the reduction rate of NO along the flame, and improves the burn-off rate of the c
Bibliography:Application Number: WO2013CN70458