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A novel kinetic model to estimate the agglomerate diameter formed by nano-sized Titania in emulsion region of AFBPR
摘要： To predict the agglomerate diameter formed by nano-sized Titania powders (P25) in emulsion region of annular fluidization bed photocatalytic reactor (AFBPR), a kinetic model was developed based on an assumption of a target molecule only reacts on the active site of an agglomerate in illumination field. The results indicated that the agglomerate diameter was a function of bed voidage and gas velocity for a given photocatalytic oxidation. It was obvious that the agglomerate diameter decreased with increasing bed voidage, and decreased along the heighten of fluidized bed, which were confirmed by the experimental results. The agglomerate size decreased with gas velocity increased, validated by the estimated data of force model. Finally, the veracity of kinetic model was validated by variation of gaseous compound types and their concentrations, which suggested that this kinetic model was feasible for photocatalytic oxidation of gaseous pollutants. This investigation highlights the novel method to describe the relationship between agglomerate diameter distribution formed in emulsion region of AFBPR and photocatalytic reactivity.
关键词： Kinetic model,Agglomerate,Bed voidage,Titania,Photocatalytic oxidation
更新于2025-09-23 15:21:01
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AIP Conference Proceedings [Author(s) SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems - Santiago, Chile (26–29 September 2017)] - Pre-heating boiler feedwater for expanded cork agglomerate production using a parabolic trough system
摘要： The production of expanded cork agglomerate involves significant heat demand, requiring superheated steam at temperatures ranging from 300oC to 370oC. The energy required to this process can be suitably provided by concentrating solar thermal collectors. This work considers the thermal energy needs of a real plant, presenting the technical and economical analysis performed for a solar heat for industrial process system using parabolic trough collectors to preheat the feedwater used by the boiler providing steam to the expanded cork agglomerate production process.
关键词： feedwater pre-heating,expanded cork agglomerate,solar thermal,parabolic trough collectors,industrial process heat
更新于2025-09-10 09:29:36