Experimental Studies on Phase Transformation during Pyrite Concentrate Oxidation under Circulating Fluidized Bed (CFB) Roasting Conditions

2011 ◽  
Vol 50 (24) ◽  
pp. 14168-14174 ◽  
Author(s):  
Tao Wang ◽  
Hai Zhang ◽  
Qing Liu ◽  
Hairui Yang
Keyword(s):  
Phase Transformation ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Experimental Studies ◽  
Pyrite Concentrate

Continuous protein recovery using a liquid-solid circulating fluidized bed ion exchange system: Modelling and experimental studies

2000 ◽  
Vol 78 (5) ◽  
pp. 858-866 ◽  
Author(s):  
Qingdao Lan ◽  
Jing-Xu Jesse Zhu ◽  
Amarjeet S. Bassi ◽  
Argyrios Margaritis ◽  
Ying Zheng ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Experimental Studies ◽  
Protein Recovery ◽  
System Modelling ◽  
Exchange System

A Two-Step Water Splitting With Ferrite Particles and Its New Reactor Concept Using an Internally Circulating Fludized-Bed

Solar Energy ◽  
2006 ◽  
Author(s):  
Nobuyuki Gokon ◽  
Takayuki Mizuno ◽  
Shingo Takahashi ◽  
Tatsuya Kodama
Keyword(s):  
Fluidized Bed ◽  
Water Splitting ◽  
Circulating Fluidized Bed ◽  
Experimental Studies ◽  
Redox System ◽  
Chemical Reactor ◽  
Inert Atmosphere ◽  
Zro2 Particle ◽  
Concentrated Solar Radiation ◽  
Particle Bed

A thermochemical two-step water splitting cycle using a redox system of iron-based oxides or ferrites is one of the promising processes for converting and storing solar energy into a fuel in sunbelt regions. The ZrO2-supported ferrite (or the ferrite/ZrO2) powders exhibit superior performances on activity and repeatability of the cyclic reactions when compared to conventional unsupported ferrites. In the first step at 1400°C under an inert atmosphere, ferrite on ZrO2 support is thermally decomposed to the reduced phase of wustite that is oxidized back to ferrite on ZrO2 with steam in a separate second step at 1000°C. In this paper, a number of ZrO2-supporetd ferrites, Mn-, Mg-, Co-, Ni- and Co-Mn-ferrites, are examined on activity. The NiFe2O4/ZrO2 powder was found to have a greatest activity between them. This paper also describes a new concept of a windowed solar chemical reactor using an internally circulating fluidized bed of ferrite/ZrO2 particles. In this concept, concentrated solar radiation passes downwards through the transparent window and directly heats the internally circulating fluidized bed. The exploratory experimental studies on this reactor concept are carried out in a laboratory scale for the thermal decomposition of NiFe2O4/ZrO2 particle bed as part of two-step water splitting cycle.

Modeling of Solid Fuel Combustion in Furnaces with a Circulating Fluidized Bed

2008 ◽  
Vol 39 (1) ◽  
pp. 65-78
Author(s):  
Yu. S. Teplitskii ◽  
V. A. Borodulya ◽  
V. I. Kovenskii ◽  
E. P. Nogotov
Keyword(s):  
Fluidized Bed ◽  
Solid Fuel ◽  
Circulating Fluidized Bed ◽  
Fuel Combustion ◽  
Solid Fuel Combustion
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