When is the best time to add defoamers?


The main function of defoamer is to eliminate foam and inhibit foam regeneration. Defoamer can be widely used in all walks of life, but its shape is small but its effect is fine. However, for many workers who don't know and use defoamers for the first time, there is a question that bothers them. When do they add defoamers? Will it be added before use or when there is a bubble? Now let Xiaobian explain to you when to add defoamer.


Most defoaming agents will add defoamer when foaming occurs. Actually, it is not only possible to join in the foaming process! We take silicone defoamer as an example. Silicone defoamer has four conventional addition methods:


1. adding before foaming: this method inhibits foam production by adding defoamer in a pre bubble system. For closed containers and devices, defoamer can effectively eliminate foam effect.


2. continuous drip adding: when the foaming liquid is circulating or flowing, it will consume defoamer with the circulation of the bubbling liquid. In this case, the defoaming agent can effectively exert the effect of eliminating foam by using the method of continuous dropping of defoamer. If the metering pump is added, it can effectively control the addition amount and achieve the purpose of the most economical use of defoamer. The method is suitable for foaming in large-scale production.


3. Controlled addition: Any foaming fluid does not necessarily foam from beginning to end. When bubbles, the size of bubbles does not have an accurate rule. Defoamers are added to supplement consumption and need not be added when they do not foam. Therefore, we can adopt the method of self-control adding, according to the foaming precursor, self-control adding defoamer.


4. Gap addition: If it is not continuous foaming, and the foaming is not serious, defoamer can be added at one time or at regular intervals. Because the amount of defoamer is small, in order to make the defoamer disperse evenly, it should be added in the place where the foaming fluid turbulence is intense. Many occasions can be added manually. If blistering is intense or in order to quickly defoam, it can be sprayed with a spray gun.


After reading the above points, do you have a certain understanding of when to add defoamer? Defoamers are not necessarily added when frothing. We can add them before foaming to prevent foaming. We can also add antifoaming agents according to the signs of foaming. There are millions of bubbles in the world, all of which are afraid of defoamers. That's all for today's knowledge sharing. Next time, we'll learn something new for you.


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