Reactivity of a CaSO4-oxygen carrier in chemical-looping combustion of methane in a fixed bed reactor

2009 ◽  
Vol 26 (2) ◽  
pp. 592-602 ◽  
Author(s):  
Qilei Song ◽  
Rui Xiao ◽  
Zhongyi Deng ◽  
Laihong Shen ◽  
Mingyao Zhang
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Caso4 Oxygen Carrier

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

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%.

Investigation of a Novel Gas Turbine Cycle With Coal Gas Fueled Chemical-Looping Combustion

2000 ◽  
Author(s):  
Hongguang Jin ◽  
Masaru Ishida
Keyword(s):  
Natural Gas ◽  
Fixed Bed ◽  
Combined Cycle ◽  
Fixed Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Gas Combustion ◽  
Coal Gas ◽  
New Type ◽  
Oxidation Reactor

Abstract A new type of integrated gasification combined cycle (IGCC) with chemical-looping combustion and saturation for air is proposed and investigated. Chemical-looping combustion may be carried out in two successive reactions between two reactors, a reduction reactor (coal gas with metal oxides) and an oxidation reactor (the reduced metal with oxygen in air). The study on the new system has revealed that the thermal efficiency of this new-generation power plant will be increased by approximately 10–15 percentage points compared to the conventional IGCC with CO2 recovery. Furthermore, to develop the chemical-looping combustor, we have experimentally examined the kinetic behavior between solid looping materials and coal gas in a high-pressure fixed bed reactor. We have identified that the coal gas chemical-looping combustor has much better reactivity, compared to the natural gas one. This finding is completely different from the direct combustion in which combustion with natural gas is much easier than that with other fuels. Hence, this new type of coal gas combustion will make breakthrough in clean coal technology by simultaneously resolving energy and environment problems.

Performance in a Fixed-Bed Reactor of Titania-Supported Nickel Oxide as Oxygen Carriers for the Chemical-Looping Combustion of Methane in Multicycle Tests

2006 ◽  
Vol 45 (1) ◽  
pp. 157-165 ◽  
Author(s):  
Beatriz M. Corbella ◽  
Luis F. de Diego ◽  
Francisco García-Labiano ◽  
Juan Adánez ◽  
José M. Palacios
Keyword(s):  
Nickel Oxide ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Oxygen Carriers

Investigation into compound CaSO4 oxygen carrier for chemical-looping combustion

2011 ◽  
Vol 39 (3) ◽  
pp. 161-168 ◽  
Author(s):  
Ning DING ◽  
Ying ZHENG ◽  
Cong LUO ◽  
Qi-long WU ◽  
Pei-fang FU ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Caso4 Oxygen Carrier

Ca0.9Mn0.5Ti0.5O3−δ: A Suitable Oxygen Carrier Material for Fixed-Bed Chemical Looping Combustion under Syngas Conditions

2014 ◽  
Vol 53 (26) ◽  
pp. 10549-10556 ◽  
Author(s):  
Mehdi Pishahang ◽  
Yngve Larring ◽  
Michael McCann ◽  
Rune Bredesen
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Carrier Material

Characteristics of a CaSO4 oxygen carrier for chemical-looping combustion: reaction with polyvinylchloride pyrolysis gases in a two-stage reactor

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34913-34920 ◽  
Author(s):  
Wenzhuo Bi ◽  
Tianju Chen ◽  
Ruidong Zhao ◽  
Zhiqi Wang ◽  
Jingli Wu ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Oxygen Carrier ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Promising Technique ◽  
Free Oxygen ◽  
Incineration Process ◽  
Caso4 Oxygen Carrier ◽  
Pyrolysis Gases

Chemical-looping combustion (CLC), which is a promising technique that includes an inherent separation of CO2 may reduce the generation of dioxins in municipal solid waste (MSW) disposal because in a CLC system, no free oxygen is available for incineration process.

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