Effect of CaO and Fe2O3 on Partitioning of As and S within Ash Fractions from Fluidised-Bed Co-Combustion of Coal and Wastes
Lucie Bartoňová*
Regional Materials Science and Technology Centre, VŠB-Technical University of Ostrava, Tř. 17. listopadu 15, Ostrava – Poruba, Czech Republic
Abstract
Possible interaction of volatilized As and S with CaO and Fe2O3 (creating solid product) could efficiently improve coal combustion flue gas cleaning. For this reason, S-CaO, As-CaO, S- Fe2O3 and As- Fe2O3 relationships were evaluated in bottom ash and fly ash fractions from fluidised-bed co-combustion of coal and wastes (and limestone as desulphurization additive) through calculation of correlation coefficients and composition of magnetic concentrates. It was concluded that S exhibited a dominant association with CaO while As exhibited affinity to both CaO and Fe2O3 - the significance differed a little in bottom ash and fly ash. In the bottom ash, the affinity of As to CaO was more significant, while in the fly ash the association to Fe2O3 slightly prevailed.
Keywords: Coal combustion, Sulphur, Arsenic, CaO, Fe2O3, Flue gas cleaning, Retention.
Article Information
Article History:
Received Date: 21/3/2018
Revision Received Date: 15/05/2018
Acceptance Date: 12/06/2018
Electronic publication date: 31/7/2018
Collection year: 2018
© 2018 Lucie Bartoňová.
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at:
https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
* Address correspondence to this author at the Regional Materials Science and Technology Centre, VŠB-Technical University of Ostrava, Tř. 17. listopadu 15, Ostrava – Poruba, Czech Republic, Tel: +420-59 699 1514; E-mail: lucie.bartonova@vsb.cz
Open Peer Review Details |
Manuscript submitted on 21-3-2018 |
Original Manuscript |
Effect of CaO and Fe2O3 on Partitioning of As and S within Ash Fractions from Fluidised-Bed Co-Combustion of Coal and Wastes |