Chemical looping combustion
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Chemical looping combustion is a technological process typically employing a dual fluidized bed system. CLC operated with an interconnected moving bed with a fluidized bed system, has also been employ
Fig 2. (Left) Dual fluidized bed design, the Darmstadt chemical looping combustion pilot plant and (Right) interconnected moving bed-fluidized bed design, the Ohio State University Coal Direct Chemical Looping pilot plant
Redox
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Redox is a type of chemical reaction in which the oxidation states of the reactants change. Oxidation is the loss of electrons or an increase in the oxidation state. Reduction is the gain of electrons
Chemical looping combustion
…is then reduced using a hydrocarbon as a reducer in a second reaction. As an example, an iron based system burning pure carbon would involve the two redox reactions: If (1) and (2) are added together, the reaction set reduces to straight carbon oxidation i.e…
Oxides, such as iron(III) oxide or rust, which consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3), form when oxygen combines with other elements.
Iron rusting in pyrite cubes
Enzymatic browning is an example of a redox reaction that takes place in most fruits and vegetables.
Blast furnaces of Třinec Iron and Steel Works, Czech Republic