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Co-combustion of coal and biomass is a low-cost, large-scale, and efficient way to utilize biomass energy, which has a wide range of potential applications. However, biomass, especially herbaceous fuels, contains high levels of volatile K, Na, and Cl, the use of which may result in ash-related operational problems, such as corrosion, fouling, and slagging during thermal utilization. The aim of this...
The effect of cellulose, xylan and Lignin contents on the co-combustion characteristic of biomass and coal was investigated by thermo gravimetric analyzer (TGA). In addition, the difference of combustion characteristic among cellulose, xylan and Lignin was studied. Cellulose had the highest onset temperature of combustion among cellulose, xylan and Lignin. The weight loss region was focused in a rather...
Biomass contains high amounts of volatile alkali metals and chlorine, which can cause deposition, corrosion and agglomeration during combustion. Meanwhile coal contains a certain amount of sulfur that produces serious environmental pollution following combustion. To investigate the effects of sulfur on the migration of alkali metals during biomass and coal co-combustion, thermodynamic equilibrium...
The mechanism of sulfur retention by alkali and specific earth metals of corn straw and coal were experimentally investigated using thermogravimetric analyzer (TG) and gas chromatography and mass spectrometer (GC-MS), as well as the effects of different concentration of oxygen on alkali earth metal CaO sulfate. The results show that the existence of alkali metals can catalyze volatile content and...
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