Premium
Characteristics of a Float Nozzle Designed for CFB Boilers
Author(s) -
Yang H.R.,
Huang Z.M.,
Yue G.X.,
Lu J.F.
Publication year - 2007
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700044
Subject(s) - nozzle , distributor , backflow , pressure drop , boiler (water heating) , fluidized bed combustion , separator (oil production) , float (project management) , waste management , nuclear engineering , combustor , fluidization , petroleum engineering , environmental science , boiler blowdown , mechanics , engineering , materials science , coal , fluidized bed , mechanical engineering , chemistry , inlet , marine engineering , combustion , thermodynamics , physics , organic chemistry
A float nozzle was designed and developed for use with large‐scale industrial circulating fluidized bed (CFB) boilers. The gas distributor equipped with the float nozzle has a unique pressure drop characteristic. It has a higher resistance than other nozzles which results in the formation of an effective barrier against backflow at low boiler loads, which results from the pressure fluctuation caused by bubble burst and solids coming from the recycle system. In addition, it has a relatively low pressure drop at high or full boiler loads, which can greatly reduce the energy cost of the primary air fan.