Premium
Toward autothermal and hydrogen‐producing sorbent regeneration for calcium‐looping
Author(s) -
Ebneyamini Arian,
Grace John,
Ellis Naoko,
Lim Choon Jim
Publication year - 2021
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23847
Subject(s) - sorbent , calcination , calcium looping , steam reforming , chemical engineering , residence time (fluid dynamics) , methane , waste management , hydrogen production , molar ratio , materials science , fluidized bed , hydrogen , chemistry , catalysis , adsorption , engineering , organic chemistry , biochemistry , geotechnical engineering
This paper presents a simulation study on the kinetic performance of combined methane combustion, steam/dry reforming, and limestone calcination for autothermal, hydrogen‐producing, and rapid sorbent regeneration in turbulent fluidized bed reactors. The effects of key operational factors are investigated at reactor pressures of 1 bar to 5 bars, including reactor temperature, CaCO 3 /total gas molar feed ratio, and sorbent residence time. The results are compared to those for conventional steam calciners, demonstrating the potential for superior performance of this novel sorbent regeneration technology under certain circumstances. A simple, but effective, design methodology is then suggested to determine the proper range of operating conditions and/or reactor dimensions for limestone calcination using this process.