Homogeneous Gas‐Liquid Distribution for Monolithic Structures via a Needle Distributor

Abstract

Dedicated to Professor Rüdiger Lange on the occasion of his 65th birthday Structured catalysts are a widely discussed approach for process intensification of chemical multiphase reactors. But equal to common catalyst structures, homogeneous educt distribution along the catalytic surface is mandatory for high reactor performance. Especially monolithic structures require a homogeneous initial fluid distribution. A novel distribution concept for gas-liquid flow through arbitrary channel matrices is presented. It is based on the injection principle where gas and liquid are inserted directly into the channels. A prototype for different cell densities was built and tested by various measurement techniques: gravimetry, X-ray tomography, and an optical fiber sensor. Additionally, the flow regime per channel was detected as equal to single-channel conditions.

Dawn of a new era in industrial photochemistry: the scale-up of micro- and mesostructured photoreactors

“…A different approach to distribute the fluid and gas over a stack of microreactors is to put needle-like structures inside the chan-nels, as shown in Figure 9e. This distributor was able to distribute the flow over 357 channels with a MI lower than 3% [88,89]. Fractals are selfsimilar-repeating geometric structures that are invariant when scaling up or scaling down [90].…”

“…9 . This distributor was able to distribute the flow over 357 channels with a MI lower than 3% [ 88 – 89 ]. Fractals are selfsimilar-repeating geometric structures that are invariant when scaling up or scaling down [ 90 ].…”