TY - JOUR
T1 - Pilot-scale investigation of high-temperature thermochemical energy storage based on the material system CaO/Ca(OH)2 in a bubbling fluidized bed
AU - Morgenstern, Leander
AU - Ohmstedt, Sören
AU - Talebi, Elija
AU - Kerscher, Florian
AU - Spliethoff, Hartmut
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/5/1
Y1 - 2024/5/1
N2 - Utilizing fluidized bed technology for thermochemical energy storage with CaO/Ca(OH)2 is promising for temperatures from 400 °C to 600 °C in industrial-scale applications. Much progress has been made on laboratory scale to develop this technology in recent years. Continuously changing material properties throughout storage cycles, mainly due to particle breakage, are identified to be challenging for scale-up. Transferability to large-scale systems needs to be examined. Investigations on a pilot scale (di = 257 mm, h = 600 mm, steam for fluidization, 700 °C, 6 barg) are done. A temperature-induced (456 °C discharging and 586 °C charging) and a pressure-induced (1.5 barg discharging and 3.5 barg charging) cyclization is performed. The applicability of standard scaling rules (scaling factor of 17) is possible. Fluidization regimes and breakage rates are transferrable. A detailed experimental characterization of the storage materials fluidization properties that are crucial for scale-up is done using a fluidization test rig (di = 140 mm, h = 658 mm, nitrogen for fluidization, ambient temperature and pressure).
AB - Utilizing fluidized bed technology for thermochemical energy storage with CaO/Ca(OH)2 is promising for temperatures from 400 °C to 600 °C in industrial-scale applications. Much progress has been made on laboratory scale to develop this technology in recent years. Continuously changing material properties throughout storage cycles, mainly due to particle breakage, are identified to be challenging for scale-up. Transferability to large-scale systems needs to be examined. Investigations on a pilot scale (di = 257 mm, h = 600 mm, steam for fluidization, 700 °C, 6 barg) are done. A temperature-induced (456 °C discharging and 586 °C charging) and a pressure-induced (1.5 barg discharging and 3.5 barg charging) cyclization is performed. The applicability of standard scaling rules (scaling factor of 17) is possible. Fluidization regimes and breakage rates are transferrable. A detailed experimental characterization of the storage materials fluidization properties that are crucial for scale-up is done using a fluidization test rig (di = 140 mm, h = 658 mm, nitrogen for fluidization, ambient temperature and pressure).
KW - Calcium hydroxide
KW - Calcium oxide
KW - Fluidized bed
KW - Pilot scale
KW - Storage cycles
KW - Thermochemichal energy storage
UR - http://www.scopus.com/inward/record.url?scp=85191358307&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2024.119775
DO - 10.1016/j.powtec.2024.119775
M3 - Article
AN - SCOPUS:85191358307
SN - 0032-5910
VL - 440
JO - Powder Technology
JF - Powder Technology
M1 - 119775
ER -