China defoamer manufacturer

INVELYCHEM is focus on defoamers in China with full range of industries over 10 years, as ANTIFOAMS producer,Invelychem offers a great alternative choice to customer globally. In 2019, we expand our capacity up to 18,000tons/year
because of the rapid growth of our business.
Silicone based defoamers : 8000Tons/Year
Fatty Alcohol based defoamers: 6000Tons/Year
Mineral Oil based defoamers: 1000Tons/Year
Polyether based defoamers: 3000Tons/Year.
Our philosophy is refreshingly simple. To produce the best products in the market and support this with an outstanding technical sales and customer support team.

Chinese Leaders in Foam Control Solutions—Serving global market with our profession

for more info: https://www.ywlchemical.com/

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invely-defoamers

Why Foam could be so inconvenient ? A light foam is generally not problematic in most applications however heavy foaming can often lead to various processing problems. These problems range from inaccurate readings from control and measuring equipment such as temperature, level and density controllers to poor mixing of reactants in chemical reaction vessels and products hanging in the foam, all too often leading to losses in production. Finally the presence of foaming can give a bad image of the way a process is operated in the eyes of a customer. The presence of foam in discharged effluent can cause complaints from local people and authorities even if the foam is harmless to people and the environment. How do silicone defoamers work ? Foam is a gas dispersion in a liquid or solid continuous phase. Foam iscreated by the surfactants which are at the air/liquid interface. Therefore air bubbles occur and are stabilised by the surfactants. Today, silicone antifoams are thebest solution to a...

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Defoamer Test Method

Defoamer testing methods are divided into dynamic defoaming and static defoaming tests. If your foaming environment is different, the recommended test methods are different. There are three main types of foam experiments to characterize the activity of defoamers. Persistence. As we have different experimental conditions in different laboratories and the experiments used in our research to obtain results from existing literature, we will introduce these experiments below. Other methods are sometimes used depending on the particular application. 1． Ross-Miles Foam Tester Features: Tested for strong foaming environments. This experiment is widely used for characterization (1) Foaming of surfactant solution (2) Research and application of foam stability in the presence of defoamer In the foaming system, the defoaming performance test was carried out by circulating bubbling by a Ros...

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How do we assess antifoam efficiency ?

How do we assess antifoam efficiency ? Quality of an antifoam is given by two main characteristics : • Knockdown ability or shock effect :Meaning the speed to destroy an existing foam. • Persistence or durability : Meaning the efficiency over time. These two parameters can be assessed by several tests. The main test is the bubbling method. A graduated column with a glass frit in the bottom is required. Foaming water is poured in the column and air at constant flowrate is introduced through the glass frit in the column. Foam is generated by the air and starts to travel up the column. At a determined level of foam, antifoam is injected. By this method several antifoaming agents can be tested. A graph reporting foam height vs time is very helpful to establish the knockdown ability and the persistence for each product. The selected antifoam is the product with the best compromise between shock effect and durability Environmental performance Silicone antifo...

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defoamer-antifoam

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