De Lena E, Alonso M, Abanades JC. Experimental Investigation of Sulfation Phenomena in Calcium Looping Systems Integrated in Cement Plants.
Ind Eng Chem Res 2022;
61:4561-4566. [PMID:
35400128 PMCID:
PMC8991081 DOI:
10.1021/acs.iecr.2c00124]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 11/29/2022]
Abstract
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The sulfation phenomena
of raw meal materials involved in calcium
looping (CaL) applications to capture CO2 from cement plants
are investigated. The effects on sulfur capture capacity and reaction
rates of different raw meals, temperatures, SO2 concentration,
and degree of belite conversions have been investigated using a thermogravimetric
analyzer. SO2 is shown to react with both free CaO and
CaO in belite. An apparent reaction order of 0.8 and activation energies
of 20.9 and 34.7 kJ/mol were estimated for cases with no-belite and
belite formations, respectively. Results indicate that CaL systems
for CO2 capture will also remove SO2 emissions
in cement plants.
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