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Hydrogen production based on chemical looping combustion can obtain clean hydrogen with near zero emission of carbon dioxide. This technique can be auto-thermal, making it very promising for hydrogen production. In this paper, the interconnected fluidized beds were established for cold model study, and tests were carried out, aiming at providing some design information for the hot bench. Experiments...
Chemical looping combustion (CLC) was a promising combustion technology with inherent separation of CO2. In this paper, thermodynamic equilibrium approach was used to investigate the reactions between CO or biomass gas and oxygen carrier Fe2O3, and experiments were carried out in a laboratory fluidized bed reactor. The results showed that when temperature was below 1000 K, the carbon deposition on...
Chemical-looping combustion (CLC) has been suggested as an energy efficient method for CO2 capture without extra energy cost for the separation of CO2. In CLC oxygen is transferred from the combustion air to fuel by means of an oxygen carrier. The fuel and the combustion air are never mixed, and the combustion products (CO2 and steam) are kept separate from the flue gas. After condensation of the...
Chemical-looping combustion (CLC) is a new method for the combustion of fuel gas with inherent separation of carbon dioxide. The cold interconnected fluidized beds (Oslash100) were set-up for the hot model design in this work. The pressure drop of both air reactor (AR) and fuel reactor (FR) were measured and used for CLC system design. The effects of superficial gas velocity on pressure distribution...
In order to avoid dioxin emission from municipal solid waste combustion (MSW), chemical looping combustion was considered. The interaction between HCl and Fe2O3 was studied in this paper and experiments were carried out in a fixed bed reactor. Chlorine was measured by methyl orange spectrophotometric method. The intermediate reactions were calculated with standard Gibbs free energy and reaction equilibrium...
The reaction mechanism of CO and Fe2O3 in a chemical-looping combustion (CLC) was studied based on density functional theory (DFT) at B3LYP level in this paper. The structures of all reactants, intermediate, transition structures and products of this reaction had been optimized and characterized. The reaction path was validated by means of the intrinsic reaction coordinate (IRC) approach. The result...
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