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ETO membrane is used to remove dissolved oxygen in water. It is operated in three modes according to different deoxygenation efficiency: vacuum, nitrogen sweep, vacuum + nitrogen sweep. Product water oxygen content can be decreased to 3ppb.
membrane contactor is a kind of special hydrophobic hollow fiber array made of polymer material. Then the array is spiral-wounded onto a water distribution tube, and then the tube is installed into a housing (at the same time, a baffler is formulated inside the housing).
Hollow fiber → Knitted fiber (under microscope) → Knitted fiber (naked eyes) → End surface
Structure of membrane contactor:
Features of membrane contactor:
1) Hollow fibers are knitted into an array, so that a certain space can be kept between these fibers. In this way, thousands of fibers are connected as a whole array which can resist strong water flow and will not break. Besides, the mass transfer efficiency can be improved in the array structure.
2) High fiber density makes it possible of ultimate gas removal from water;
3) Central tube water distribution + Middle baffler structure, change the water flow direction to flush vertically towards hollow fibers, which can improve the mass transfer efficiency between shell side and lumen side.
In many industrial processes, dissolved oxygen in water has negative influence: corrosion to many materials. It may cause corrosion to pipes, boiler and other related equipments. Membrane contactor system is modular designed, easy to operate, no need of chemical. Compared with vacuum tower and other technology, it has smaller footprint but higher efficiency!
membrane contactor can be used for deoxygenation in boiler feed water, semi-conductor and flat plate/TFT process ultra pure water (to prevent crystal plate bending), food & beverage process water, chemical industry process water, oil field reinjection water.
According to different deoxygenation efficiency, membrane contactor is usually operated in the following modes: vacuum, nitrogen sweep, vacuum + nitrogen sweep. Product water oxygen content can be decreased to 3ppb.
· Specifications of ETO membrane contactor:
Item |
Parameters |
|
Model |
ETO-6×28 |
ETO-10×28 |
Application |
O2 removal from pure water |
|
Flux |
1~6m3/h |
6~15m3/h |
Fiber material |
Polypropylene |
|
Dimensions |
Ø6×28 inch |
Ø10×28 inch |
Liquid/gas contact area |
45m2 |
120m2 |
Inner/outer diameter of fiber |
0.2/0.3mm |
|
Housing material |
UPVC |
|
PH resistance range |
1~13 |
|
Working temperature |
5~45℃ |
|
Max inlet water pressure |
6.0bar |
|
Connect pipe size |
DN32 / DN20 |
DN40 / DN20 |
·
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