title: Effect of biomass-sulfur interaction on ash composition and agglomeration for the co-combustion of high-sulfur lignite coals and olive cake in a circulating fluidized bed combustor.
abstract: This study aimed to investigate the effect of biomass-sulfur interaction on ash composition and agglomeration for the co-combustion of high-sulfur lignite coals and olive cake in a circulating fluidized bed combustor. The tests included co-combustion of 50-50% by wt. mixtures of Bursa-Orhaneli lignite+olive cake and Denizli-Kale lignite+olive cake, with and without limestone addition. Ash samples were subjected to XRF, XRD and SEM/EDS analyses. While MgO was high in the bottom ash for Bursa-Orhaneli lignite and olive cake mixture, Al2O3 was high for Denizli-Kale lignite and olive cake mixture. Due to high Al2O3 content, Muscovite was the dominant phase in the bottom ash of Denizli Kale. CaO in the bottom ash has increased for both fuel mixtures due to limestone addition. K was in Arcanite phase in the co-combustion test of Bursa/Orhaneli lignite and olive cake, however, it mostly appeared in Potassium Calcium Sulfate phase with limestone addition.
authors.affiliation: Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey; Department of Environmental Engineering, Akdeniz University, Antalya 07058, Turkey. Electronic address: murat_varol@hotmail.com.
authors.forename: Murat
authors.initials: M
authors.lastname: Varol
authors.affiliation: Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey.
authors.forename: Aysel T
authors.initials: AT
authors.lastname: Atimtay
mesh_terms: D018533:Biomass; D002119:Calcium Carbonate; D003031:Coal; D060729:Coal Ash; D031658:Olea; D013455:Sulfur / Q000737:chemistry*
chemical_list: D003031:Coal; D060729:Coal Ash; D013455:Sulfur; D002119:Calcium Carbonate
keywords: Agglomeration; Circulating fluidized bed; Co-combustion; High-sulfur lignite coal; Olive cake