Zhipeng Xue

Hydrodynamic Analysis of a Three-Fluidized Bed Reactor Cold Flow Model for Chemical Looping Hydrogen Generation: Pressure Characteristics

Chemical looping hydrogen generation (CLHG) can produce pure hydrogen with inherent separation of CO2 from fossils fuel. The process involves a metal oxide, as an oxygen carrier, such as iron oxide. The CLHG system consists of three reactors: a fuel reactor (FR), a steam reactor (SR) and an air reactor (AR). In the FR, the fuel gases react with iron oxides (hematite Fe2O3, magnetite Fe3O4, wustite FeO), generating reduced iron oxides (FeO or even Fe), and with full conversion of gaseous fuels, pure CO2 can be obtained after cooling the flue gas from the fuel reactor; in the SR, FeO and Fe reacts with steam to generate magnetite (Fe3O4) and H2, the latter representing the final target product of the process; in the AR, the magnetite is oxidized back to hematite which is used in another cycle.