Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4994910 | International Journal of Multiphase Flow | 2017 | 33 Pages |
Abstract
The hydrodynamic behavior of a cold-flow gas-solid fluidized bed with an inner diameter of 22â¯cm is investigated by means of an ultra-fast X-ray tomographic setup. In the case of an exothermal reaction, heat exchanger tubes are required to remove the reaction heat out of the bubbling fluidized bed reactor. For the examined cold-flow model, the heat exchanger tubes are replaced by vertical internals that serve as placeholder. The influence of vertical internals on the bubble properties for different spatial configurations (square and circular arrangements) is investigated in addition to measurements without internals. Furthermore, the hydrodynamic results of the à 22â¯cm column are compared with an available data set which is based on measurements that were conducted in a column with an inner diameter of 14â¯cm. The objective of this paper is to provide measurement data for the scale-up process as well as for various computer models simulating a bubbling fluidized bed with vertical internals. It was found that the scale-up process from pilot plants to an industrial scale may be simplified if vertical internals are present, independently of the geometric arrangement.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Frank Schillinger, Simon Maurer, Evert C. Wagner, J. Ruud van Ommen, Robert F. Mudde, Tilman J. Schildhauer,