Membrane Based Triethylene Glycol Separation and Recovery from ...
Membrane Based Triethylene Glycol Separation and Recovery from ...
Membrane Based Triethylene Glycol Separation and Recovery from ...
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Tubular modules<br />
Figure 2.10 Spiral wound module (Xu, 2001)<br />
Inorganic (ceramic) membranes are produced mainly as tubes, <strong>and</strong> then the obvious<br />
module is the tube bundle for applications that used this kind of membranes. On the other<br />
h<strong>and</strong>, for sweep gas pervaporation, tubular membranes conducting the gas-permeate<br />
mixture are the only option.<br />
Figure 2.11 Tubular modules (Xu, 2001)<br />
The difference <strong>and</strong> similarity between different pervaporation modules are summarized in<br />
table 2.13<br />
Table 2.14 Comparison of Pervaporation Modules (Xu, 2001)<br />
Hollow<br />
Fine<br />
Fibers<br />
Capillary<br />
Fibers<br />
24<br />
Spiral-<br />
Wound<br />
Plate-<strong>and</strong>-<br />
Frame<br />
Tubular<br />
Manufacturing Cost<br />
,($/m 2<br />
)<br />
5-20 20-100 30-100 100-300 50-200<br />
Packing Density High Moderate Moderate Low Low<br />
Resistance to fouling Very poor Good Moderate Good Very good<br />
Parasitic pressure<br />
drops<br />
High Moderate Moderate Moderate Low<br />
Suitable for high<br />
Can be done<br />
pressure operation Yes No No Yes with<br />
difficulty<br />
Limited to specific<br />
types of membrane<br />
Yes Yes No No No
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