Elutriation characteristics of fine particles from bubbling fluidized bed incineration for sludge cake treatment

2005 ◽  
Vol 25 (3) ◽  
pp. 249-263 ◽  
Author(s):  
Yu-Min Chang ◽  
Chih-Mei Chou ◽  
Kuo-Tung Su ◽  
Chao-Yang Hung ◽  
Chao-Hsiung Wu
Keyword(s):  
Fluidized Bed ◽  
Fine Particles ◽  
Bubbling Fluidized Bed ◽  
Sludge Cake ◽  
Fluidized Bed Incineration

Fluidization Behavior of Alumina Nano-Particles

2011 ◽  
Vol 110-116 ◽  
pp. 1833-1840 ◽  
Author(s):  
Tanuja Vaidya
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Fine Particles ◽  
Size Range ◽  
Nano Particles ◽  
Alumina Powder ◽  
Particle Size Range ◽  
Bubbling Fluidized Bed ◽  
Set Up ◽  
Scanning Electron

The experimental study is conducted to determine the fluidization behavior and heat transfer variations across the bed in the bubbling fluidized bed having very fine particles. The powder is analyzed using scanning electron microscope (SEM) and Mastersizer analyzer. The bubbling fluidized bed set-up was designed, developed and installed for the hydrodynamic and heat transfer studies. From the experiments, it is found that the alumina powder with particle size range of 200nm to 10μm has agglomerate bubbling fluidized bed (ABF).

Statistical Analysis of Operation Data and Automatic Control on Fluidized Bed Incineration Plant with Dryer

1993 ◽  
Vol 28 (11-12) ◽  
pp. 341-345
Author(s):  
Shigeki Minami ◽  
Hidekazu Nagasawa ◽  
Yoshinori Saito ◽  
Motoharu Yamagishi ◽  
Masakatsu Hiraoka ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Fluidized Bed ◽  
Fuzzy Theory ◽  
Exhaust Gas ◽  
Furnace Temperature ◽  
Incineration Plant ◽  
Commercial Plant ◽  
Dried Sludge ◽  
Fluidized Bed Incineration ◽  
Plant Control

Continuous operation data were obtained on a fluidized bed incineration plant with dryers, and two autoregressive models were then prepared through statistical analysis of the data. Based on the results, an automatic plant control system using fuzzy theory was designed. An incinerator system of this type is characterized by energy efficiency, for which optimum and stable moisture control of the dried sludge is important. The large difference in time constants between incinerator and dryers makes energy saving difficult. Based on these analyses and design, control operations at a commercial plant with a capacity of 150 wet-tons/day were studied. It was confirmed that reduction of auxiliary fuel consumption and reduction of CO and NOx in the exhaust gas were optimized, while the moisture content of dried sludge and the furnace temperature were kept stable.

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