Method and equipment for separating ash from slags by fluidized bed

Application Number: 00107372
Application Date: 2000.05.12
Publication Number: 1270292
Publication Date: 2000.10.18
Priority Information:
International: F23C10/00;F23C10/26
Applicant(s) Name: Qinghua Univ.
Inventor(s) Name: Cheng Yintong;Zhang Xuwei
Patent Agency Code: 11201
Patent Agent: di gengyan
Abstract A method and apparatus for separating ash from dregs by fluidized bed is suitable for circulating fluidized-bed boiler, and features use of fluidized bed, whose cross-section varies to generate different upper and lower fluidizing speeds. The annular wind feed is used for fluidizing. The fine ash flys from bottom to top and is carried back to boiler by wind. The coarse dregs move downward and then are discharged out. Its advantages are recovery of physical heat of ash dreg, low temp of discharged dregs, simple structure, small size, low energy consumption and high separation efficiency.