An Investigation of the Effect of Ammonium Sulphate on Thermal Behavior and Kinetics of Coal/Bark Co-combustion

Theerapong Laongnual ； Anusorn Chinsuwan

《Proceedings of the 14th IFToMM World Congress》 14th-6 (2015/11) Pp. 111-116

https://doi.org/10.6567/IFToMM.14TH.WC.OS20.014

並列摘要

According to the problems of biomass combustion especially bark can result in deposit formation and superheater corrosion of boilers due to high alkali and chlorine content (mainly is gaseous KCl). The results from several researchers found that KCl can be reduced by co-combustion with S from coal or using of additive especially the ammonium sulphate ((NH_4)_2SO_4) by injection at the outlet of furnaceto form sulphation reaction. The sulphation reaction can convert gaseous KCl toa less corrosive alkali sulphate which the ammonium sulphateperformed significantly better than coal. But injection of ammonium sulphate in large scale boilers may be difficult to do due to piping and handling system need to install. Inthis work try to propose another method for using the ammonium sulphate by mixing with the fuels (coal/bark) directly. Therefore, effect from mixing of the ammonium sulphate should be considered before apply to the commercial scale boilers. The aim of this work is to study the effect of ammonium sulphate on thermal behavior and kinetics of coal/bark co-combustionat difference S:Cl ratio (4:1 and 6:1) by thermogravimetric analysis method (TGA) and also ash composition will be analyzed by x-ray fluorescence (XRF).

並列關鍵字

co-combustion ； kinetics analysis