scholarly journals Chemical-Looping Combustion and Chemical-Looping Reforming in a Circulating Fluidized-Bed Reactor Using Ni-Based Oxygen Carriers

2008 ◽  
Vol 22 (4) ◽  
pp. 2585-2597 ◽  
Author(s):  
Magnus Rydén ◽  
Anders Lyngfelt ◽  
Tobias Mattisson
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Oxygen Carriers

scholarly journals Natural minerals as oxygen carriers for chemical looping combustion in a dual circulating fluidized bed system

2009 ◽  
Vol 1 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Tobias Pröll ◽  
Karl Mayer ◽  
Johannes Bolhàr-Nordenkampf ◽  
Philipp Kolbitsch ◽  
Tobias Mattisson ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Natural Minerals

Hydrogen production by chemical-looping reforming in a circulating fluidized bed reactor using Ni-based oxygen carriers

2009 ◽  
Vol 192 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Luis F. de Diego ◽  
María Ortiz ◽  
Francisco García-Labiano ◽  
Juan Adánez ◽  
Alberto Abad ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Chemical Looping ◽  
Oxygen Carriers

Studies on Solids Flow in a Cold Model of a Dual Fluidized Bed Reactor for Chemical Looping Combustion of Solid Fuels

2019 ◽  
Vol 142 (2) ◽  
Author(s):  
Kamil Idziak ◽  
Tomasz Czakiert ◽  
Jaroslaw Krzywanski ◽  
Anna Zylka ◽  
Wojciech Nowak
Keyword(s):  
Fluidized Bed ◽  
Pressure Sensors ◽  
Fluidized Bed Reactor ◽  
Chemical Looping Combustion ◽  
Solid Fuels ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Cold Model ◽  
Dual Fluidized Bed ◽  
Combustion Of Solid Fuels

Abstract The results of investigations on solids flow in a cold model of the dual fluidized bed reactor designed for chemical looping combustion of solid fuels (DFB-CLC-SF) are presented in this paper. The constructed unit consists of two interconnected reactors. The first one, so-called fuel reactor (FR), is operated under bubbling fluidized bed (BFB) conditions, whereas the second one, so-called air reactor (AR), is structurally divided into two sections. The bottom part of AR works under BFB while the upper part, i.e., the riser, is operated in the fast fluidized bed (FFB) regime. In these studies, the air was used for fluidization process in all parts of the DFB-CLC-SF reactor. The glass beads with similar parameters to oxygen carriers (OCs) used in the CLC process were utilized as an inventory. The fluidization conditions are controlled by using the sets of pressure sensors installed around the circulation loop. The experimental data acquired in the tests are further employed to the analysis of solids behavior in a cold model of the DFB-CLC-SF reactor. The main goal of these studies was to establish the conditions for smooth fluidization, which concurrently provide the required residence time of solids in both reactors that is one of the most crucial factors in the CLC process. It was found that the fluidizing gas velocity in reactors has a significant impact on solids behavior and the investigated parameters. However, what is the most important, it was confirmed that the operation condition of the DFB-CLC-SF reactor can be adjusted to meet the requirements resulting from the properties of OCs.

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