Page 172 - Adsorption, Ion Exchange & Catalysis- 2007, Elsevier - Copy

Else_AIEC-INGLE_cH003.qxd 7/13/2006 1:45 PM Page 168
168 3. Heterogeneous Processes and Reactor Analysis

Spray
Pulsed flow

Tri ckle flow
Gas flow rate
Dispersed bubble
Liquid flow rate

Figure 3.46 Flow regimes in three-phase f ed-beds. ix

Figure 3.47 gimes. Trickling and pulsing re

Trickle-bed reactors are found in many industries such as the petroleum, petrochemical,
,
and chemical industry and in various applications, i.e. water treatment and bio-
w
aste
chemical and electrochemical processing.
Packed bubble bed reactor
The analysis in this section is primarily dedicated to trickle-bed reactors. Ho some er , we v
basic aspects of packed bubble bed reactors will be presented as well. ubble f A b ix ed-bed
reactor is actually a tubular-flow reactor with concurrent upflow of gas and liquid. The cat-
alyst bed is completely immersed in a continuous liquid flo while gas rises as b w , ubbles.