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- Title
Estimation of the carbonation reaction kinetic parameters for dilute methane and carbon dioxide conditions in a calcium looping process.
- Authors
Patel, Savankumar; Tremain, Priscilla; Moghtaderi, Behdad; Sandford, James; Shah, Kalpit
- Abstract
Experimental investigations were carried out to determine the intrinsic kinetic parameters of the carbonation reaction of limestone (CaCO3) in a calcium looping (CL) process for (1) dilute carbon dioxide conditions (1 vol % CO2 in air) and (2) dilute methane conditions (1 vol % CH4 in air). The random pore model (RPM) was applied to estimate the gas‐solid heterogeneous kinetic parameters and further used to study the effects of bed temperature, fluidizing velocity and inventory size on carbon dioxide capture and methane combustion. Experiments were conducted in a single lab‐scale bubbling fluidized bed reactor on calcined limestone at a range of temperatures (450–600°C) and inventory sizes (8–16 g). The activation energy determined for the carbonation reaction in dilute CO2 and dilute CH4 conditions were found to be 25.7 × 103 kJ/kmol and 22.3 × 103 kJ/kmol, respectively. These values were compared with the conventional calcium looping process (12–15% CO2 in flue gas). © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1312–1318, 2018
- Subjects
COAL gasification; CARBON sequestration; CARBON dioxide mitigation; CARBONIZATION; METHANE
- Publication
Environmental Progress & Sustainable Energy, 2018, Vol 37, Issue 4, p1312
- ISSN
1944-7442
- Publication type
Article
- DOI
10.1002/ep.12809