Controlling gas levels in the power plant and boiler feedwater systems is very critical to plant operation. It is important to remove dissolved CO2 from water and dissolved O2 from water. Both of these gasses are corrosive and they can negatively impact the boiler performance and corrode metals in contact with the boiler feed water. Historically chemical injection, vacuum towers, and/or forced draft deaerators were used to remove oxygen and carbon dioxide from boiler feedwater. Liqui-Cel Membrane Contactors, however, offer many advantages over these outdated technologies and many plants are choosing membrane systems because they are economical and compact.
Chemical injection often used in boiler maintenance puts excess deposits on metal surfaces. As chemical deposits accumulate on the boiler surfaces, the boiler has to be shut down and cleaned in a process called blow down. Blow down frequency periods increase when chemicals are injected into the feedwater. Increases in blow down frequency = higher operating costs which can be minimized with the use of Liqui-Cel® membrane degasifiers.
Oxygen removal to 1ppb can easily be achieved with membrane contactors. Compare that to a typical vacuum tower that can only achieve 7ppb. Likewise dissolved CO2 can also be removed to 1ppm. That is also lower than what a typical forced draft deaerator can produce.
There are so many other applications where Liqui-Cel Contactors have been put into operation. Most all liquids that need gasses removed from them or gasses added to them can benefit from the installation of Liqui-Cel Membrane Contactors. Membrane contactors have been used for over 15 years to control gasses in a variety of processes.
Learn more by visiting www.liqui-cel.com or www.membrana.com.
