Ceramic elements and housings for oil removal

DOVNLOAD PDF Ceramic elements

Ceramic ultrafiltration/microfiltration membranes offer important advantages in comparison with polymeric membranes for the removal of oil from water.

First, they have a very high temperature tolerance which enables them to operate at temperatures far above the limits of polymeric membranes and to make optimal use of the lower liquid viscosity and higher capacity at elevated temperatures. Secondly, they are insensitive to traces of organic solvents and will have a much longer life time in the application.

Ceramic membranes are available in a wide range of channel forms, pore sizes, gasket materials and housings to suit the application.

CERAMIC ELEMENTS FOR OIL REMOVAL

For removal of emulsified oils we use a ceramic tube of 25 mm diameter with 39 channels of nominal channel diameter 2.5 mm inside which gives each tube a membrane area of 0,5 m2.
The pore size for the application is 50 kD for most oily waste streams, which leads to an oil concentration of less than 10 ppm in the permeate . In some cases, neutralisation of the pH or subsequent treatment for removal of heavy metals may be required before re-use or disposal of the permeate.
If the membrane is used to remove oils from degreasing baths, a pore size of 300 kD will be used to allow most of the active ingredients to pass the membrane.
The oil concentrate which is rejected by the membrane must be hauled away.
However, its volume will be greatly reduced compared with the original waste volu me.

ELEMENT LIMITATIONS
pH operating range  0-14
Max. pressure 10 bar
Max. Temperature 130 degrees Celcius
Organic Solvents insensitive

Number of
tubes
25 mm
Product Code Housing material Total membrane area
m2
Recommended hydraulic flowrate
m3/hr
@ 1 bar pressure drop
1
Basic Tube
CE25-39-50 (50 kD)
CE25-39-300 (300 kD)
n.a. 0.5 01/02/25
1 CE OW1 Stainless Steel 0.5 01/02/25
3 CE-OW3 Stainless steel 01/05/11 8
7 CE-OW7 Stainless steel 03/05/11 16
19 CE-OW19 09/05/11 Stainless steel 43
37 CE-OW37 18/05/11 Stainless steel 83

The results and capacities of membrane systems on oily water streams will vary in dependance of external factors like oil concentration and type, presence of other contaminants, pretreatment and process temperatrure.
No guarantees are implied in the data and technical details can be changed by Membracon without notice.