How to use defoaming agent normally
Foam and foam often accompany industrial production. Many operations or processes often greatly affect the production capacity of the industry due to the generation of foam. So, how to suppress the occurrence of foam? Recently, a newly developed product has a particularly good defoaming performance. It is a defoamer. So, how much do people know about how to use and operate defoamers normally? Let’s listen to the detailed introduction of industry experts.
For example: the production of lubricating oil in the industry produces foam, which is bound to reduce lubricity, causing component wear and even failure; in the transmission series, foam can reduce oil pressure, power reduction, oil supply interruption, and operation failure; in the gas absorption process, the generation of foam will reduce the processing capacity of the absorption device and even cause flooding; in the fermentation process of preparing antibiotics, glutamic acid, monosodium glutamate, etc., the utilization rate of the fermentation tank is often seriously reduced due to foaming, and even oxygen supply is affected, resulting in a decrease in the yield of the target product. As can be seen from the above, eliminating harmful foam has great technical and economic significance, so the application of defoamers plays an indispensable role in industrial production.
According to industry experts engaged in the research and development of water-based defoamers, foam is mostly generated under the action of external forces. The surfactant contained in the solution forms foam at the junction of the solution and air and floats up, or it is caused by the formation of films and bubbles by colloidal substances such as gelatin and protein. Defoamers are substances that can reduce surface tension and eliminate foam in the production process.
There are many types of defoamers, which are mainly divided into five categories: organic siloxane, polyether, silicon and polyether grafting, imine and amide. They have the characteristics of fast defoaming speed, long foam suppression time, wide range of medium use, and even harsh medium environment, such as high temperature, strong alkali and strong acid. They are widely used to remove harmful foams generated in the production process of latex, textile sizing, food fermentation, biomedicine, coatings, petrochemicals, paper industry cleaning, etc.
Correct use of defoamers: The selection of defoamers should be targeted, and the use environment, temperature, pH value and foaming medium should be understood.
First small test, then pilot test, determine the best product and the best dosage. Stir well after stratification occurs. Even if no stratification occurs, stir well before use. Do not dilute at will. If dilution is necessary, use thick aqueous solution under guidance.
