Limestone hydrogenation combined with reverse water–gas shift reaction under fluidized and iso-thermal conditions using MFB-TGA-MS

First Principle-based Rate Equation Theory for the Calcination Kinetics of CaCO3 in Calcium Looping

“…Therefore, this theory emerges as a promising and potent tool for the design and optimization of various energy materials in future investigations. V i M , molar volume of solid component i, m 3 mol −1 X calc , calcination conversion, / ΔE ±i , forward/backward energy barrier of R.i, eV ε 0 , porosity of the particle, / θ i , surface coverage of component i, / Λ, active site density, mol m −2 σ, specific surface energy, eV Å −2 Ω, volume of the monomer, m 3…”

“…Calcium looping is a promising technology that can be widely applied in a range of industrial applications, such as CO 2 capture from flue gases, sorption-enhanced hydrogen production, integrated CO 2 capture and utilization (ICCU), and thermochemical energy storage. , Calcination occurs at high temperatures, and its kinetics are critical for calcium looping processes. The calcination of CaCO 3 is complex, which includes chemical reactions, mass transfer, and heat transfer, and occurs in the following steps .…”

“…B , Boltzmann constant, m 2 kg s −2 K −1 k f /k b , forward/backward reaction constant of R.1, s −1 k n /k n-, nucleation/dissolution rate, s −1 p i , partial pressure of component i, Pa p Θ , standard pressure, atm Q vib , vibrational partition function Q rot , rotational partition function Q trans , translational partition function r, radius of the monomer, m r, reaction rate, s −1 r 0 , initial radius of the grain, m r 1 , radius of the product layer, m r 2 , radius of the reactant core, m R, gas universal constant, J mol −1 K −1 S, supersaturation ratio, / S 0 , specific surface area of the particle, m 2 m −3 t, time, s T, temperature, K V CaCO 3 , volume of CaCO 3 , m3 …”