Oxygen absorption and desorption properties of YBaCo4O7+δ monolithic oxygen carrier in the fixed-bed reactor

2022 ◽  
Author(s):  
Limin Hou ◽  
Chaoyue Qiao ◽  
Qingbo Yu ◽  
Wenfei Wu
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Oxygen Absorption

Chemical-looping combustion of methane with CaSO4 oxygen carrier in a fixed bed reactor

2008 ◽  
Vol 49 (11) ◽  
pp. 3178-3187 ◽  
Author(s):  
Qilei Song ◽  
Rui Xiao ◽  
Zhongyi Deng ◽  
Huiyan Zhang ◽  
Laihong Shen ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Caso4 Oxygen Carrier

scholarly journals Influence of the oxidation step on the behaviour and the performances of an oxygen carrier in fixed bed reactor

2013 ◽  
Vol 17 (1) ◽  
pp. 219-226 ◽  
Author(s):  
Lucia Blas ◽  
Sophie Dorge ◽  
Nabila Zouaoui ◽  
Arnold Lambert ◽  
Patrick Dutournié
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Oxidation Step

scholarly journals Kinetic Behavior of Fabricated CuO/ZrO2 Oxygen Carriers for Chemical Looping Oxygen Uncoupling

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2156
Author(s):  
Young Ku ◽  
Chia-Wei Chang ◽  
Shr-Han Shiu ◽  
Hsuan-Chih Wu ◽  
Niels Michiel Moed
Keyword(s):  
Elevated Temperatures ◽  
Cupric Oxide ◽  
Oxygen Carrier ◽  
Fixed Bed ◽  
Reduction Rate ◽  
Fixed Bed Reactor ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Redox Cycles ◽  
Reduction And Oxidation

Chemical looping with oxygen uncoupling (CLOU) is an innovative alternative to conventional combustion. CuO/ZrO2 oxygen carriers were tested in this system for their effectiveness and resilience. Cupric oxide (CuO) was demonstrated to be a reliable oxygen carrier for oxygen-uncoupling with consistent recyclability even after 50 redox cycles in a thermogravimetric analyzer (TGA). The reduction of CuO to generate Cu2O and oxygen was observed to be improved markedly for experiments operated at higher temperatures; however, the oxidation of Cu2O by air to generate CuO was hindered for experiments carried out at elevated temperatures. The reduction rate of fabricated CuO/ZrO2 particles containing 40% CuO was enhanced with increasing temperature and decreased with increasing particle size for experiments operated in a fixed bed reactor. The geometrical contraction and Avrami-Erofe’ev models were demonstrated to be appropriate for describing the reduction and oxidation of CuO/ZrO2, respectively. The activation energies for the reduction and oxidation were determined to be 250.6 kJ/mol and 57.6 kJ/mol, respectively, based on experimental results in the temperature range between 850 and 1000 °C.

Effects of ZnO Addition on Fe2O3/Al2O3 Oxygen Carriers on CH4 Reduction for Chemical Looping Combustion

2016 ◽  
Vol 872 ◽  
pp. 196-200
Author(s):  
Sujinda Thongsermsuk ◽  
Benjapon Chalermsinsuwan ◽  
Prapan Kuchonthara ◽  
Pornpote Piumsomboon
Keyword(s):  
Oxygen Carrier ◽  
Synergetic Effect ◽  
Fixed Bed ◽  
Reduction Process ◽  
Fixed Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Fuel Gas ◽  
Physical Mixing

Fe2O3/Al2O3/ZnO oxygen carriers with small content ZnO (5 wt% to 10 wt%) were prepared by physical mixing method and were evaluated its capability as an oxygen carrier in a chemical looping combustion. The combustion was conducted by using CH4 as a fuel gas. The reduction process of Fe2O3/Al2O3/ZnO oxygen carrier was carried out in a fixed bed reactor. The solid reduction products were characterized by X-ray diffraction (XRD) and Scanning Electron Microscope with EDS Attachment (SEM-EDS). The results show that the reactivity of Fe2O3/Al2O3/ZnO oxygen carriers is greater than that of Fe2O3/Al2O3 which is implied the synergetic effect between ZnO and Fe2O3. XRD results show that the iron oxide in the oxygen carriers is reduced to metallic iron. SEM-EDS also shows that the iron agglomeration is prevented. Consequently, the suitable content of ZnO in oxygen carriers is ranged from 5 wt% to 10 wt%.

Hydrogen production from chemical looping steam reforming of glycerol by Ni-based oxygen carrier in a fixed-bed reactor

2015 ◽  
Vol 280 ◽  
pp. 459-467 ◽  
Author(s):  
Bo Jiang ◽  
Binlin Dou ◽  
Yongchen Song ◽  
Chuan Zhang ◽  
Baoguo Du ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Chemical Looping

Study and analyses of a CLC oxygen carrier degradation mechanism in a fixed bed reactor

2016 ◽  
Vol 302 ◽  
pp. 619-632 ◽  
Author(s):  
A. Tilland ◽  
J. Prieto ◽  
D. Petitjean ◽  
E. Schaer
Keyword(s):  
Degradation Mechanism ◽  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor

Identifying iron-based oxygen carrier reduction during biomass chemical looping gasification on a thermogravimetric fixed-bed reactor

2018 ◽  
Vol 229 ◽  
pp. 404-412 ◽  
Author(s):  
Jimin Zeng ◽  
Rui Xiao ◽  
Shuai Zhang ◽  
Huiyan Zhang ◽  
Dewang Zeng ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Chemical Looping ◽  
Iron Based
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