Reactor design and operation strategies for a large-scale packed-bed CLC power plant with coal syngas

Dynamic Simulation of Fixed‐Bed Chemical‐Looping Combustion Reactors Integrated in Combined Cycle Power Plants

“…The reactors in parallel in the CLC island shown in Scheme 4 depict different stages of the CLC cycle; namely, the reduction, purging, oxidation, heat removal, and purging. This sequence is in accordance with pervious analyses of fixed‐bed CLC operating strategies . The fuel stream is compressed to 17 bar, preheated to 480 °C, and then sent to the reactor to execute the oxygen carrier reduction step.…”

“…There are no technical barriers that prevent atmospheric fluidized beds to operate at industrial‐scale levels. However, major challenges exist in the operation of pressurized fluidized beds because of the difficulty to maintain a stable solids circulation between the reactors . This is a critical issue because high‐pressure operation enables combined cycles to be performed efficiently and thus is a requirement for the seamless integration of CLC with a CC.…”

“…A fixed‐bed CLC reactor is a batch process that switches dynamically between successive reduction, oxidation, and heat‐removal phases. Extensive analyses of the design and operation of a dynamic fixed‐bed reactor can be found in the literature . In these analyses, a key issue in the design of a fixed‐bed CLC reactor is to devise an operating strategy that controls the temperature variations inside the reactor bed, especially during the exothermic oxidation step.…”

“…A fixed‐bed CLC reactor was designed to meet the fuel load of the Monterrey power plant. For this purpose, we scaled‐down the fixed‐bed reactor proposed by Spallina et al . and used their recommended design parameters for a large‐scale CLC power plant.…”

Performance of Cu‐Fe‐based oxygen carrier in a CLC process based on fixed bed reactors

“…15 For the application to the distributed medium-and small-scale hot water/steam gas-fueled boilers, XM Zheng et al 16 proposed a novel CLC process based on the FBR by introducing a CH 4 pre-reforming step for transforming CH 4 to H 2 and CO, which could be operated at a much lower temperature of below 550°C and thus avoid the problems caused by high operating temperatures. 15 For the application to the distributed medium-and small-scale hot water/steam gas-fueled boilers, XM Zheng et al 16 proposed a novel CLC process based on the FBR by introducing a CH 4 pre-reforming step for transforming CH 4 to H 2 and CO, which could be operated at a much lower temperature of below 550°C and thus avoid the problems caused by high operating temperatures.…”