Degassers are systems designed to remove dissolved gases or trapped air from liquids, slurries, and other processing materials. They are widely used across industrial sectors where gas contamination can affect product quality, equipment performance, or operational efficiency. By reducing unwanted gases, degassers help improve consistency, reduce defects, and support smoother production processes.
Different industries rely on degassing equipment for different reasons. In some cases, dissolved gases can create bubbles or foam that interfere with manufacturing. In others, gas contamination may affect chemical reactions, reduce measurement accuracy, or damage machinery. Degassers are therefore an important component in many production and treatment systems.
What Is a Degasser?
A degasser is a device or system that separates gases from liquids or semi-liquid substances. The process can involve vacuum pressure, centrifugal force, heat, or mechanical agitation depending on the material being processed and the desired outcome.
Degassing systems are commonly used in industries such as water treatment, chemical manufacturing, food production, oil and gas, plastics processing, and laboratory operations. The equipment can range from compact laboratory units to large-scale industrial systems integrated into production lines.
The main objective of a degasser is to improve the quality and stability of the processed material by removing unwanted gas content.
How Degassers Work
Degassers operate using several different principles, depending on the application and material involved.
Vacuum Degassing
Vacuum degassers reduce the surrounding pressure around a liquid, allowing dissolved gases to escape more easily. Lower pressure decreases the solubility of gases in liquids, causing them to separate from the material. This method is commonly used in industrial fluid processing and laboratory systems.
Centrifugal Separation
Some degassers use centrifugal force to separate gas from liquids. As the material spins rapidly, denser liquid components move outward while gas bubbles collect toward the centre and are removed.
Thermal Degassing
Heat can also be used to remove dissolved gases from liquids. Increasing temperature reduces gas solubility, allowing gases to escape more efficiently. Thermal degassing is often applied in water treatment and chemical processing systems.
Mechanical Degassing
Mechanical systems use stirring, agitation, or specialised chambers to release trapped air or gas bubbles. These systems are commonly found in food processing, coatings, adhesives, and polymer manufacturing.
Common Applications of Degassers
Degassers are used in a wide range of industrial and commercial processes.
Water Treatment
In water treatment systems, degassers help remove dissolved gases such as oxygen, carbon dioxide, and hydrogen sulphide. Removing these gases can reduce corrosion in pipelines and equipment while improving water quality.
Chemical Processing
Chemical production often requires controlled conditions to maintain product consistency. Dissolved gases can interfere with reactions or alter material properties, making degassing an important part of the manufacturing process.
Food and Beverage Production
In food processing, degassing can help improve product texture, appearance, and shelf life. It is commonly used in products such as sauces, oils, beverages, and liquid ingredients where trapped air or foam may affect quality.
Plastics and Polymer Manufacturing
Air bubbles trapped within polymers or resins can weaken finished products or create surface defects. Degassers help remove gas during production, improving structural integrity and finish quality.
Oil and Gas Industry
Degassing systems are frequently used to separate gas from drilling fluids and processing liquids. This helps maintain stable operating conditions and improves safety during extraction and production activities.
Benefits of Using Degassers
The use of degassers provides several operational and production advantages across industries.
Improved Product Quality
Removing dissolved gases helps reduce bubbles, foaming, and inconsistencies in finished products. This can improve appearance, strength, and reliability.
Increased Equipment Efficiency
Gas contamination can affect pumps, sensors, pipelines, and other processing equipment. Degassing helps systems operate more efficiently and may reduce wear or maintenance requirements.
Reduced Corrosion
In water and fluid systems, dissolved oxygen and other gases can contribute to corrosion. Degassers help lower this risk, supporting longer equipment life.
Enhanced Process Stability
Many industrial processes depend on precise conditions. Degassing helps maintain stable operating environments by controlling unwanted gas content.
Better Measurement Accuracy
Air bubbles and dissolved gases can interfere with monitoring equipment and analytical instruments. Removing these gases can improve measurement consistency and process control.
Types of Degassers
Different types of degassers are available depending on industry requirements and process conditions.
Vacuum Degassers
These systems use pressure reduction to remove gases and are widely used in fluid processing and laboratory applications.
Membrane Degassers
Membrane systems use semi-permeable membranes that allow gases to pass through while retaining liquids. These are often used in water purification and high-purity applications.
Spray Degassers
Spray degassers increase liquid surface area by spraying fluid into a chamber, allowing gases to escape more effectively.
Centrifugal Degassers
These systems rely on rotational force to separate gas from liquids and are commonly used in industrial fluid systems.
Choosing the Right Degasser
Selecting the correct degasser depends on factors such as the type of material being processed, flow rate, temperature, pressure conditions, and required gas removal efficiency. Industries may also consider maintenance requirements, installation space, and compatibility with existing systems.
Understanding the role of dissolved gases within a process is important when determining which degassing method is most suitable. Different applications require different levels of gas removal and operational control.
The Importance of Degassers in Modern Industry
Degassers play a critical role in maintaining product quality, operational efficiency, and process reliability across many industries. By removing unwanted gases from liquids and processing materials, these systems help support safer operations and more consistent production outcomes.
As industrial processes continue to demand greater precision and efficiency, degassing technology remains an important part of manufacturing, treatment, and processing systems worldwide.