Catalytic reactor engineering ⇒ information-driven design of packed (operando), fluidized, multi-functional, and -phase reactors

Problem statement

At lab-scale, the ultimate goal of a catalytic reactor is to provide (1) reliable kinetic information, neglecting or controlling other phenomena (heat-mass transfer and hydrodynamics); (2) high-throughput data to amplify the results, accelerate model and catalyst discoveries; and (3) results with the minimum requirements of reactants and wastes generated. The pillars of these reactors are quality, quantity, and safety.

We design, build and test different laboratory-scale reactors. Our strategy involves creating and testing reactor prototypes while modeling these using our workflow. We have high-speed cameras, probes, and other measuring instruments to understand the reactor behavior. We focus on packed-, fluidized-bed, and multiphase reactors:

In packed bed reactors, we focus on forced dynamic and operando reactors. These are the quintessence of information-driven reactors where the dynamics can involve flow changes, temperature, pressure, partial pressure, presence of activity modifiers (poissons, H2O…). In operando reactors, we follow a spectro-kinetic-deactivation-hydrodynamic approach to resolve the individual steps involved. In fluidized bed reactors, we focus on downers and multifunctional reactors (circulating, multizone or two-zone, Berty reactors) We focus on trickle-bed, slurry, and bio-electrochemical reactors in multiphase bed reactors.

Al pilot-plant scale, we aim to reach the maximum productivity levels while solving the growing pains: the scale-up. Based on a robust kinetic model obtained in the intrinsic kinetic reactor (lab-scale) and using computational fluid dynamics, we design, build, and operate pilot plants. At this stage, we seek partnerships with investment or industrial enterprises to make these pilot plants.

Goals

  • Multifunctional fluidized bed reactors ⇒ multizone, circulating...
  • Packed bed membrane reactors
  • Forced dynamic reactors ⇒ pulsing, SSITKA...
  • Forced dynamic operando reactors ⇒ DRIFTS, TPSR...
  • Operando reactors
  • Spray fluidized bed reactors
  • Downer reactor I ⇒ micro downer
  • Downer reactor II ⇒ counter-current and scale-up
  • Batch Berty reactor ⇒ short contact time
  • Multiphase reactors ⇒ trickle bed and slurry
  • High throughput experimentation (HTE) reactors
  • Photo-thermal and bioreactors
  • Reactor visualization and prototyping lab
  • Spatio-temporal hydrodynamic characterization and validation

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Related Publications

Multi-technique operando methods and instruments for simultaneous assessment of thermal catalysis structure, performance, dynamics, and kinetics

by Velisoju, Kulkarni, Cui, Rabee, Paalanen, Rabeah, Maestri, Brückner, Ruiz-Martinez, Castaño
Chem Catal. Year: 2023 DOI: https://doi.org/10.1016/j.checat.2023.100666

Abstract

The operando methodology is instrumental in catalysis science to assess catalyst structure, performance, dynamics, and kinetics under working conditions. This review analyzes the progress achieved mainly in thermal catalysis to combine different techniques and obtain the interdependency between catalyst structure, function, and reaction media. We analyze various materials of construction, reactor designs, contact types of the catalyst with the reactant, and modes of operation. We also highlight recent studies on combining these techniques and augmenting the obtained data by focusing on instrumentation and experimental design. We review the different reactors/cells used for different applications to understand the type of information received, limitations, and the design principles of these instruments. We provide our viewpoints on integrating spectroscopy, catalysis science, and reaction engineering; these advanced operandotechniques can offer a more comprehensive image of catalysts at work.

Keywords

CO2 CHA CRE