Deaeration is a process by which unwanted gases are removed from water and other liquids, usually through the application of heat or heated steam and binding chemicals. It is heavily used in chemical and power plants, along with other industries such as processing saltwater. Here are three reasons why this should be done.
To Prevent Corrosion
Many dissolved gases are corrosive. Oxygen and carbon dioxide, especially, can cause corrosion in metal piping systems. In chemical plants corrosion can be a serious issue, causing equipment failures and subsequently, dangerous accidents. Deaerator pumps are used to process liquids in a boiler injected with steam and scavenging chemicals. The steam deaeration causes the liquid to sink to the bottom of the boiler, where it is further stripped of any remaining gases by the scavenging chemicals. The liquid can then be piped to other applications in the plant.
To Maximize Heat Transfer
Another benefit of deaerating liquids is improvement in heat-transfer capability. If the chemical or power plant uses heat-transfer to create energy or power certain processes, raising the efficiency can produce major benefits for the overall productivity of the plant.
To Save Energy
Since deaeration heats the liquid, improves the liquid’s heat transfer abilities and traps the heat all in one system, power plants and chemical processing facilities are able to reduce fuel consumption formerly needed to accomplish these tasks separately. This greatly increases energy efficiency, resulting in reduced overall operating costs and incidently, environmental benefits because of less fuel and energy waste.
If you are working in any industry which uses deaeration, it can be a good idea to familiarize yourself with the different types of deaeration processes and equipment. Hopefully you are now more knowledgeable about deaeration and can begin to learn more about the kinds of deaeration used for the chemicals and processes with which you work.