Defoamer-the main
function is to eliminate foam to inhibit foam regeneration. Defoamer can be
widely used in all walks of life, but the body is small but the effect is fine.
However, for those who do not know much about it and the first use of
defoamers, there is a problem that bothers them, and when is the defoamer
added? Is it added before use or when it comes to foam? Ok, Now Let's learn
when and how to add defoamer.
(The picture shows a serious foaming site)
Most workers who use
defoamers add defoamers when they produce foam. In fact, not only can you join
when you are bubbling! We will use silicone defoamers as an example. Silicone
defoamers have four conventional methods of addition:
1. Adding before
foaming: This method can suppress the production of foam by previously adding
an antifoaming agent to a system which may generate foam. For closed containers
and devices, defoamers are effective in eliminating foam.
2. Continuous
dropwise addition: When the foaming liquid is circulated or flows, the
defoaming agent will be consumed along with the circulating flow of the foaming
liquid, in which case the continuous defoaming agent is used. The defoaming
agent can effectively exert the effect of eliminating the foam, and if it is
supplemented by the metering pump, the dosage can be effectively controlled to
achieve the most economical use of the defoaming agent (this method is suitable
for mass production foaming).
3. Self-controlled
addition: Any foaming liquid does not necessarily foam from beginning to end.
When there is foaming, the amount of foam does not have an accurate pattern.
The defoamer is added to supplement the consumption, and it is not necessary to
add it when it is not foaming. Therefore, a self-controlled addition method can
be adopted to automatically add an antifoaming agent according to the foaming
aura.
4. Gap addition: If
it is not continuous foaming, and the foaming is not serious, the defoaming
agent may be added once or periodically. Since the amount of the antifoaming
agent added is small, in order to make the antifoaming agent uniformly
dispersed, it should be added in a place where the foaming liquid is
drastically shaken. Many occasions can be added by hand. If the blister is
violent or for rapid defoaming, it can be sprayed with a spray gun.
After reading the
above points, is there a certain understanding of when to add defoamer?
Defoamers are not necessarily added at the time of foaming. We can add them
before foaming to prevent foaming. We can also add defoamer according to the
harbinger of foaming... Today’s knowledge sharing is here, and we will
recognize new knowledge for everyone next time.
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