Okay kiddo, let's talk about deaerators! Have you ever seen a pot of boiling water on the stove? When we boil water, it turns into steam and rises up into the air.
Well, industrial plants and power stations also use water to create energy, and they need to make sure that the water doesn't have any air in it, because air can cause problems like corrosion or make the machines work less efficiently.
So to keep the water free from any air bubbles or dissolved gases, they use something called a deaerator. The deaerator is a big tank that takes in the water, and then it heats it up until it starts to turn into steam, just like we saw with the boiling water on the stove.
But before the steam can rise up and escape from the deaerator, it's put through a special system of trays and baffles. This system acts like a filter and removes any extra air or gases in the steam, making the water "de-aerated" and free of any unwanted air or gases.
After the water is free of any air or gases, it can be used safely in the industrial plant or power station to create energy. So, that's what a deaerator does in a nutshell - it takes in water, heats it up to make steam and then removes any air or gases so that the water can be used more efficiently!