Möglichkeiten zur Optimierung der Auslegung von Zyklonabscheidern für Gas-Feststoff-Trennung

摘要

Based on an introduction into basics of cyclone technology modern methods for the optimization of cyclone design are presented, which have been applied successfully in industrial practice. Very efficient measures are shown which improve the separation efficiency and the pressure drop of highly loaded cyclones. Applying those measures in circulating fluidized bed (CFB) reactors indicate a significant increase of the reactor efficiency. Furthermore, a very efficient method for online-regulation of the efficiency of highly loaded cyclones for the operation with varying solids feeds is shown, results in power plant operation are presented. Uniflow cyclones represent a competitive alternative to standard cyclones. A new calculation model for this in the past poorly explored cyclone type has been developed, which has been validated by comprehensive experimental data. Due to its short calculation times the calculation method is very appropriate for designing industrial units. A systematic comparison of the performance data of both cyclone types indicates that under the condition of limited available space and pressure drop a uniflow cyclone unit can achieve higher efficiencies than a standard cyclone unit. Furthermore, new design methods for optimum product discharge are shown.