Carbonation Kinetics of Ca(OH)2 Under Conditions of Entrained Reactors to Capture CO2
- Arias Rozada, Borja
- Álvarez Criado, Yolanda
- Pañeda, B
- Abanades García, Juan Carlos
DOIAbstract
The use of Ca(OH)2 as a CO2 sorbent instead of CaO in calcium looping systems has the advantage of a much faster reaction rate of carbonation and a larger conversion degree to CaCO3. This work investigates the carbonation kinetics of fine Ca(OH)2 particles (<10 μm) in a range of reaction conditions (i.e., 350-650 °C and CO2 concentrations up to 25%v) that could be of interest for applications where a short contact time is expected between the solids and the gases (i.e., entrained bed carbonator reactors). For this purpose, experiments in a drop tube reactor with short reaction times (i.e., below 6 s) have been carried out. High carbonation conversions up to 0.7 have been measured under these conditions, supporting the viability of using ent...
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