“…(1), where kaolinite reacts with alkali chlorides forming alkali-alumonisilicates and HCl. Similar reactions between different vaporized alkali species and aluminosilicates have been observed in a number of studies dealing with co-combustion of coal and high-alkali fuels [65][66][67][68] as well as fundamental investigations on different aluminosilicates-sorbents for capturing alkali vapors [51][52][53][69][70][71][72]. According to Fig.…”
“…(1), where kaolinite reacts with alkali chlorides forming alkali-alumonisilicates and HCl. Similar reactions between different vaporized alkali species and aluminosilicates have been observed in a number of studies dealing with co-combustion of coal and high-alkali fuels [65][66][67][68] as well as fundamental investigations on different aluminosilicates-sorbents for capturing alkali vapors [51][52][53][69][70][71][72]. According to Fig.…”
“…In this study, kaolin and alumina were used as additives. Kaolin, which consists mainly of kaolinite (Al 2 Si 2 O 5 (OH) 4 ), has been recognized as considerable additive for agglomeration prevention [2,10,14,15]. van der Drift et al [16] had assessed kaolin for preventing ash agglomeration.…”
Section: Prevention Effect Of Agglomeration By Additivesmentioning
“…The reaction between vaporised halides and kaolin has previously been characterised by means of water digestion [49,51,53,54]. The chemical reaction products are water insoluble whereas the unreacted halides are water soluble [49].…”
Section: Ash Sampling and Analysismentioning
confidence: 99%
“…The chemical reaction products are water insoluble whereas the unreacted halides are water soluble [49]. The fly ash samples in this work were fractioned chemically in a similar way as were the fuels based on the leaching test developed for biomass fuels [55][56][57] which has also been applied for fly ashes [54].…”
Section: Ash Sampling and Analysismentioning
confidence: 99%
“…Regarding potassium, kaolin has been shown to react with KOH, K 2 SO 4 , KCl and K 2 CO 3 as the initial speciation of K in CFB combustion temperatures [48,49]. In CFB combustion the addition of kaolin may increase the enrichment of K and Zn in the fly ash [50,51].…”
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