Liqui-Cel

Oxygen Removal from Water / Deoxygenation

O2 Removal From Water

Technical Briefs

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 76: Liqui-Cel® Membrane Contactor Degassing System Installed to Increase Well Pumping Efficiency in Rockland County New York

This technical brief describes how Liqui-Cel Membrane Contactors were evalulated and used to improve the flow rates of wells operated by United Water of New York (UWNY) by removing dissolved gasses. The reduced operating costs and lower capital requirements gave Liqui-Cel Contactors the edge over competing technologies.

TB 63: Liqui-Cel® Membrane Contactors are widely used in the soft drink and brewing industries to Control dissolved gasses

This paper provides an overview of the principles of Membrane Contactor Operation for the Beverage market and why they should be used to save operating costs and improve processes.

TB 62: Liqui-Cel® Membrane Degassing Modules Improve Ice Production at the Ice Palace in Moscow

This case study describes an innovative approach that was used by the Ice Palace in Moscow to produce clearer ice in their arena.

TB 47: The Kori Nuclear Power Plant Uses Liqui-Cel Membrane Contactors for Liquid Degassing
Kori Nuclear Power Plant uses Liqui-Cel® degasifiers to remove O2 to prevent corrosion in their boiler feedwater system.

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.

TB 33: Oxygen Removal from Water to 3 ppb at IMEC

Semiconductor research facility utilizes Liqui-Cel® degassing contactors for 3 ppb O2 removal from water.

TB 15: Deoxygenated Make-Up Water in Power Plant Using Liqui-Cel® Contactors
This power plant case study discusses using Liqui-Cel® degassers for oxygen removal from water and corrosion control.

More Tech Briefs

More Info

Need to select the right product for your application? Read our Technical Specs for the entire Liqui-Cel® Membrane Contactor product line.

Liqui-Cel® Membrane Contactors are used around the world for deoxygenation of water and other liquids. Oxygen (O2) negatively impacts many processes. It is corrosive, it can impact product shelf life and it can cause low product yields. Liqui-Cel® Contactors offer easy-to-operate, modular solutions for degassing and oxygen (O2) removal from water without chemicals and without large vacuum towers or deaerators. Liqui-Cel® Contactors also offer the benefit of simultaneous oxygen and carbon dioxide removal from water as well as N2 control with one step.

Boiler Feed Water Deaerators and Corrosion Control

In the power and industrial areas, dealing with corrosion is a leading cause of operating and maintenance costs. Piping, boilers and equipment are susceptible to corrosion if deaeration is not present or strictly controlled to ensure the magnetite layer is maintained (OT – Oxygenate Treatment).
Many plants are now using Liqui-Cel® Contactors for the deoxygenation of their boiler make-up and feed water. Boiler feedwater deaeration extends boiler and piping life by preventing corrosion of critical parts. Feed water to Heat Storage & Recovery Generators (HRSG) is another area where deoxygenation of the feed water at start-up can prevent costly maintenance and reduce the risk of failure due to corrosion.
Plants that are venting off large volumes of steam to remove dissolved O2 can also remove oxygen using Liqui-Cel Contactors prior to the deaerator. Lowering the deaerator vent rate reduces fuel consumption. This can be a significant cost savings for plants generating steam.

Improving Yields in Semiconductor Applications

In the semiconductor and flat panel/TFT industries, high levels of oxygen can cause lower wafer and flat panel yields. Liqui-Cel® Contactors are the degassing standard in the microelectronics sector where the dissolved oxygen specification is critical. Our contactors can produce <1ppb of dissolved oxygen and carry a performance warranty. We have thousands of systems operating around the world today.

Beverage and Food Processing Applications

Liqui-Cel® Membrane Contactors are used around the world for the deoxygenation of water, beer and other liquids in the food and beverage industry. Oxygen can negatively impact the shelf life, product quality, product consistency and taste. Liqui-Cel® Contactors offer a small, modular, and cost effective means to control the dissolved gasses in the beverage. Beer, wine and juice processing are common applications for our membrane degassers.

 

 

Technical Papers

Using Gas Transfer Membrane to Deaerate Cold Boiler Feed Water Reduces Steam Duty and Operating Costs
This case study gives an account of how Gas Transfer Membranes (GTM), enabled a refinery to deaerate cold boiler feed water to replace the steam duty, associated with traditional steam deaeration, with waste heat. Significant energy cost savings were realized resulting in a very quick payback for the refinery. The article is courtesy of PTQ and was originally printed in the Q1 2012 issue.

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.

Membrane Contactors are used as a Boiler Feedwater Deaerator
Read how Membrane Contactors are used as a Boiler Feedwater Deaerator to reduce blow down frequency and chemical usage.

Lucent Technologies Low Level Oxygen Removal
This article summarizes a case study where Liqui-Cel® Membrane deaerators are used at Lucent Technologies to remove oxygen from water to 10 ppb.

Deareation: Degasification Of Water Using Novel Membrane Technology
This paper provides an overview of the theory and principles of Membrane Contactor Operation. Similar but a little less detailed compared to the Membrane Contactor: Introduction To paper.

Membrane Processing for Water Treatment in the Semiconductor Industry
This paper discusses the overall UPW loop in a Semiconductor plant. Membrane Degasification is stied as being the technology of the future for deoxygenating to 1 ppb.

Meeting Water Quality Specifications for 300 mm Processing
This paper reviews historical to current UPW specifications for 300 mm processing. More specifically, the paper discusses state of the art technologies, including Liqui-Cel® Contactors, used to meet the new specifications.

UltraPure Water: Systems for Microelectronics
This article, discusses the use of Liqui-Cel® Membrane Contactors as the degassing and oxygen removal technology used in new semiconductor plants instead of older technologies such as vacuum towers.

Degasification of Boiler Feed Water with Liqui-Cel® Membrane Contactors
This paper discusses how Liqui-Cel® Degasifiers can be optimized as boiler feed water deaerators for oxygen removal from water and carbon dioxide removal from water. Advantages of Liqui-Cel® systems over conventional deaerators and forced draft degasifiers are also highlighted.

Membranes for Oxygen Removal in 300mm Semiconductor Processing
This paper discusses how low oxygen specifications in 300mm semiconductor processing can be met with degasification membranes.

VLSI chooses Liqui-Cel Contactors over Conventional Vacuum Tower for Deaeration
This paper describes the process and technology that VLSI evaluated for their San Antonio Texas Plant. Liqui-Cel® Contactors were chosen over vacuum deaeration for oxygen removal of < 1ppb.