Degassing Information

What Is a degasser?

It is a device to remove gases from a liquid, solution or absorbent. It is available in a variety of designs for different degasification applications. The device is used to remove dissolved gases from the liquid or solution. It can be used to remove the gases completely or only to a certain level.

The Purpose of degassing

Liquids and solutions containing gases cannot be used in certain applications. Unwanted gases present in such liquids cause quality problems in the final products. Reactive gases can even cause explosion under certain circumstances. Presence of gases in the liquid can reduce the lifespan of boiler systems, fittings, pipes and pumps. It is especially damaging to systems that use hot liquid or solution. Degasification helps produce liquid and solution of ultra high purity.

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vacuum degassing

This type of systems is designed to remove gases from the liquid or solution using the vacuum method. The vacuum process creates negative pressure inside the container, causing the dissolved gases to get separated from other materials.

Membrane Degasification

A special type of membrane capable of separating gases from the liquid is used for this purpose. Most of the gases dissolved in the water can be removed easily by this technique. The membrane allows only the water to pass through it while the gases are separated and taken out through an outlet.

Thermal Degasification

Water and many other liquids cannot hold gases when their temperature is increased. In fact, all gases from the water can be removed by simply heating it. At the same time, it must be done correctly or the gases will redissolve in the water.


An inert gas like argon or nitrogen is used as a substitute gas to remove the dissolved gases like oxygen and carbon dioxide. The right setup is needed to avoid water condensation or solvent evaporation during this process.

Chemical Degasification

Chemicals are added to remove the dissolved gases. This method can be used either to remove or convert the gases. The reaction time is less when the water temperature is higher.

There are many applications where presence of gas bubbles in the solution makes it difficult to achieve the best result. Gases get mixed up in the liquid when it is stirred incorrectly. Degassed water is easier to work with compared to the regular one. Some types of chemical compounds sensitive to certain gases can react and create problems. All such problems are avoided by removing the dissolved gases from the water, liquids and solutions.