Details

Autor(en) / Beteiligte

• Möller, Felix
• Kipping, Ragna
• Schleicher, Eckhard
• Löschau, Martin
• Hampel, Uwe
• Schubert, Markus

Titel

Comparative Hydrodynamic Analysis of Narrow and Pilot‐Scale Bubble Columns with Internals

Ist Teil von

• Chemie ingenieur technik, 2019-09, Vol.91 (9), p.1339-1346

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• For a stable operation of exothermic processes in bubble column reactors, an appropriate heat control is required, e.g., through dense internal tube bundle heat exchangers. Their impact on hydrodynamic characteristics and scaling approaches is studied for columns of different scales. Two different column dimensions (DN100 and DN400) were equipped with two common tube patterns of triangular and square pitches to study local fluid dynamics. Based on geometrical tube bundle scaling quantities, hydrodynamic similarity as a scale‐up criterion with respect to average holdups, phase distributions, and local gas structures can be reached. Heat exchanger internals are utilized to remove reaction heat from highly exothermic processes in bubble columns. The internals' coverage significantly alters the hydrodynamics. This work compares gas holdup, bubble size distribution, and flow morphology in columns at different scales and proposes a first scale‐up approach with regard to hydrodynamic similarities.