Energy storage and attrition performance of limestone under fluidization during CaO/CaCO3 cycles

Effect of steam on heat storage and attrition performance of limestone under fluidization during CaO/CaCO3 heat storage cycles

“…The attrition rate of the limestone carbonated under 20% steam after 10 THS cycles is 5% higher than that of the limestone carbonated under pure CO 2 . In our previous study, 46 it was found that a reduction in carbonation temperature mitigated the attrition of the limestone. The introduction of steam in the carbonation atmosphere reduces the exothermic temperature, which mitigates the adverse effect of steam on the attrition of the limestone during the THS cycles, so the increase in the attrition rate of the limestone is slight.…”

“…The particles both in the cyclone and in the furnace were sieved through a Retsch AS400 Control sieve shaker and weighed using a Mettler Toledo-XS105DU electronic balance to determine the particle size distribution (PSD). The mean particle diameter and attrition rate were used to evaluate the attrition performance of the samples 45–48 as follows:where d s, N is the Sauter average diameter 45 of particles after N THS cycles, mm; R N represents the attrition rate of limestone during the THS cycles, mm per cycle; a is the particle size range; x a denotes the particle mass fraction, wt%; d a is the average particle diameter, mm.…”

High-Temperature Thermochemical Heat Storage Performance of CaO Honeycombs During CaO/CaCO3 Cycles

“…The complete calcination time of CaCO 3 is an important parameter to design a solar calciner in a CaL-CSP plant . The decomposition of CaCO 3 is affected by the calcination temperature and atmosphere Figure exhibits the decomposition conversion of the CaCO 3 honeycomb at different calcination temperatures and times during the 1st cycle.…”

“…54 The decomposition of CaCO 3 is affected by the calcination temperature and atmosphere. 55 Figure 7 exhibits the decomposition conversion of the CaCO 3 honeycomb at different calcination temperatures and times during the 1st cycle. It should be noted that the decomposition conversion of the CaCO 3 honeycomb increases with the calcination time at the same calcination temperature.…”

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

“…Solar spouted bed reactors have been recently numerically and experimentally investigated for biomass gasification (Boujjat et al, 2020;Ma et al, 2020b). In particular, a design of solar reactor basing on the conical spouted bed reactor was developed at CNRS-PROMES laboratory (Table 1, Type B) and applied to biomass gasification (Bellouard et al, 2017;Chuayboon and Abanades, 2020).…”