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- O2 Removal From Water
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Corrosion Control
Technical Briefs
TB 83: Liqui-Cel® Membrane Contactors Remove Dissolved Gases from Water in Many Hydrocarbon Recovery and Process Applcations
Dissolved gas control in water is common in many hydrocarbon recovery and process applications. Minimizing the environmental impact, improving operating efficiency, avoiding process issues and protecting system components are just a few of the reasons degassing is necessary. Liqui-Cel® 8 x 40 and 8 x 80 High Pressure Membrane Contactors introduce a new method for managing dissolved gas control that may substantially reduce chemical usage, requires a much smaller footprint and weighs considerably less.
TB 56: Power Plant in Thailand Uses Liqui-Cel® Membrane Contactors to Remove CO2 From Water
Liqui-Cel® degasifiers are used to remove CO2 from water that feeds a high pressure boiler.
TB 68: Chemical Cost Comparison LC vs. Traditional Deaeration System
This technical brief details the process a company goes through when weighing the operating costs and performance of different degassing systems.
TB 80: Oxygen Removal from Feedwater of a Central District Heating System
In central district heating systems heated water from power plants is distributed to residential and industrial areas by insulated piping networks. Large storage tanks are typically used to safely store heat for use during periods of peak load demand. To prevent internal corrosion and to increase the lifetime of piping and storage tanks, inlet water should be deoxygenated with Liqui-Cel® Membrane Contactors.
TB 81: Advanced Membrane Degassing Technology for Radiation Source Term Reduction and Corrosion Control in Nuclear Power Plants
Dissolved gas control in a nuclear power plant’s water system can be essential to reduce radiation source term. Controlling dissolved gases can also reduce the formation of unwanted radionuclides, such as 14C and oxides of 60Co, and alleviate Primary Water Stress Corrosion Cracking (PWSCC). Recently, several nuclear power plants have installed Liqui-Cel® Membrane Contactors into their water systems to remove dissolved gases to help reduce the formation of radionuclides and help protect operators and the environment.
TB 50: Taiwan O2 CO2 Removal Case Study
Power plant uses Liqui-Cel® degassing contactors for CO2 Removal from water.
TB 48: Nuclear Power Plant Uses Liqui-Cel® Contactors for Dissolved Oxygen Removal to Prevent Corrosion
Case Study demonstrating the use of Liqui-Cel® Membrane Contactors for O2 and CO2 removal from water without chemicals.
TB 45: Boiler Feed Water Degassing Lowers Operations Costs and Chemical Usage
Boiler Feed Degassing system in China Removes O2 from water for corrosion control and lowers operating costs.
TB 39: Japanese Brewery Uses Liqui-Cel Contactors in 3 Breweries
Liqui-Cel® degasifiers reduce corrosion by removing O2 and CO2 from water at Kirin Brewery.
More Info
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Removing dissolved gases without the use of chemicals
It is commonly known that dissolved gases such as CO2 and O2 can oxidize and destroy metal piping and system components. Corrosion control and prevention is essential to avoid the large cost associated with replacing boiler tubes, old pipes and corroded equipment. The life time of metal components can be extended and plant downtime can be minimized by adding a small compact membrane degassing system that controls dissolved gasses and prevents corrosion.
Historically, oxygen scavengers might have been used to remove oxygen from water to prevent corrosion but current environmental concerns with handling and storing chemicals is limiting chemical use. Instead, many industries are opting to control corrosion using Liqui-Cel Membrane Contactors for oxygen and carbon dioxide removal from water.
Forced draft deaerators are also being replaced with compact and clean Liqui-Cel degassing systems. Forced draft systems can only remove CO2 to about 5 ppm. Membrane Contactors can provide removal of CO2 down to 1 ppm. Membrane Contactors are also clean and because degassing contactors provide a closed system they do not introduce additional contaminants into the system. The contaminants that are introduced from the environment through the FDA’s blower can negatively impact the boiler and other processes. No additional contaminants are introduced from Liqui-Cel Contactors.
Excess nitrogen in the water used to feed nuclear reactors can also form carbon 14, which is a long term environmental contaminant. Formation of Carbon 14 can be prevented by using Liqui-Cel Contactors to remove nitrogen from these feed water systems. Because our membranes are not selective to which gas is removed, all dissolved gases can be removed simultaneously.
Membrane Contactors are small clean reliable systems that can be placed virtually anywhere in a building. Contactors have been used for corrosion control in many industries for over 15 years. For more information, please review some of our Technical Briefs and case studies located to the right.
It is commonly known that dissolved gases such as CO2 and O2 can oxidize and destroy metal piping and system components. Corrosion control and prevention is essential to avoid the large cost associated with replacing boiler tubes, old pipes and corroded equipment. The life time of metal components can be extended and plant downtime can be minimized by adding a small compact membrane degassing system that controls dissolved gasses and prevents corrosion.
Historically, oxygen scavengers might have been used to remove oxygen from water to prevent corrosion but current environmental concerns with handling and storing chemicals is limiting chemical use. Instead, many industries are opting to control corrosion using Liqui-Cel Membrane Contactors for oxygen and carbon dioxide removal from water.
Forced draft deaerators are also being replaced with compact and clean Liqui-Cel degassing systems. Forced draft systems can only remove CO2 to about 5 ppm. Membrane Contactors can provide removal of CO2 down to 1 ppm. Membrane Contactors are also clean and because degassing contactors provide a closed system they do not introduce additional contaminants into the system. The contaminants that are introduced from the environment through the FDA’s blower can negatively impact the boiler and other processes. No additional contaminants are introduced from Liqui-Cel Contactors.
Excess nitrogen in the water used to feed nuclear reactors can also form carbon 14, which is a long term environmental contaminant. Formation of Carbon 14 can be prevented by using Liqui-Cel Contactors to remove nitrogen from these feed water systems. Because our membranes are not selective to which gas is removed, all dissolved gases can be removed simultaneously.
Membrane Contactors are small clean reliable systems that can be placed virtually anywhere in a building. Contactors have been used for corrosion control in many industries for over 15 years. For more information, please review some of our Technical Briefs and case studies located to the right.
Technical Papers
Membrane Contactors: An Introduction To The Technology
This paper provides a good overview to Membrane Contactor technology. Principles of Membrane Contactor Operation and mass transfer principles are discussed.
