Liqui-Cel® membrane contactors use a microporous hollow fibre membrane to remove oxygen from the water stream. Gas flows on one side of the membrane, and liquid flows on the other side at a higher pressure relative to the gas stream. Because the membrane is hydrophobic it prevents intrusion of liquid into the pores and acts as an inert support that allows direct contact between a gas and a liquid phase without dispersion.
Applying a vacuum and/or an inert sweep gas to the gas phase lowers the partial pressure of the target gas. This creates the driving force for dissolved oxygen in the liquid to transfer through the hollow fibre membrane pores. The transferred oxygen is then carried away by the vacuum pump or sweep gas.
Liqui-Cel membrane contactors have been used for over 20 years in many industries, including microelectronics, power, food and beverage, ink jet inks, coatings, pharmaceutical, laboratories and many others. To date, over 2.7million gpm (613,000m³ per hour) of liquids have been processed.
Reliable deoxygenation in a compact system
Liqui-Cel membrane contactors are reliable, compact devices used to control dissolved gases in liquid streams. On offshore platforms, 8in x 80in high pressure contactors deoxygenate seawater for water injection / water flooding down to 10ppb, using a footprint that can be nearly 40% less than a vacuum tower.