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Fly ash may cause serious erosive wear on steel surfaces along the flow path in a circulating fluidized bed (CFB) boiler. In this paper, erosion model and MFIX software were used to evaluate gas-solids flow on erosion rate. The effects of the particle size and density on the erosive wear were compared quantitatively.
In this paper, experiments were carried out to investigate the effect of calcium carbonate (CaCO3) additive on agglomeration caused by burning neutral sulfite semi-chemical (NSSC) black liquor in a bench-scale fluidized bed. The experiments can be performed under temperatures ranging from 700 to 800??C, at additive dosages from 0 to 30%. The experimental phenomenon shows that CaCO3 is a significant...
The reduction of N2O by adding biomass gas as reburning fuel is studied on a small-scale vertical reactor tube and experimental results are analyzed using the theory of chemical kinetics. The result showed that for the flue gas containing a certain concentration of N2O, when the biomass gas contained H2, CH4, CO and CO2 was used, the reburning fuel ratio should be more than 1.4%. The decomposition...
Ni/γ-Al2O3-550 and Ni/γ-Al2O3-800 catalysts (calcined at 550°C and 800°C in the catalyst preparation) were prepared with a impregnation method. Steam reforming of acetic acid as a model compound of bio-oil for hydrogen production had been investigated on the catalysts. The fresh catalysts were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR-H2) and specific surface...
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