defoamer-antifoam

How should we select defoamers / antifoams for paper pulp? Pulp and paper antifoaming agents is very necessary in papermaking, because a lot of foam will be generated in the process of papermaking and pulping, the surface tension of the generated saponification is less than the surface tension of black liquor produced by cooking materials, making it It exists in the surface layer of black liquor and forms a thin film, which forms foam under the mixing action of air. The papermaking process is mainly divided into two major steps,  Washing pulp Papermaking No matter which step inevitably produces foam, so you need to use defoamers/antifoam for paper industry, there are many types of defoamers, the following is for everyone Introduce the characteristics of papermaking defoamers. Excessive foaming will result in the loss of fibers and raw materials. Further, the presence of air in the wet paper web can affect the filtration rate of paper in the paper making pulp defoamers is a better s...

Why should use defoamer for liquid detergent? Detergent is a new laundry detergent after detergent and soap. I believe many people have misunderstood laundry detergent. They think that the foam in laundry detergent is getting better and better. Actually it is not, whether it is laundry detergent or detergent. It is not to determine the cleaning ability by looking at the amount of foam, and too much foam, not only clothes are difficult to clean, but the foam that is discharged is also difficult to be decomposed by nature, so the laundry liquid produced by general manufacturers will use laundry liquid defoamer. The difference between laundry detergent and washing powder: ²   The surface active ionic components are different, the laundry detergent is non-ionic, and the laundry powder is anionic surfactant ²   The PH value is different. The laundry detergent is neutral, while the detergent is alkaline. Foam introduction of laundry liquid: The cleaning ability of the ...

A defoamer is an agent added to a liquid to remove surface foam and help release trapped air. These agents are common in many foaming liquids such as cooking oil and laundry soap. They are also common in a wide range of industrial processes ranging from oil refining to wastewater treatment. In most cases, a deformer is placed in a water or oil mixture before being placed into the liquid. These mixtures help to distribute the defoamer evenly through the liquid and often promote a specific type of air removal. Foam is the layer of bubbles that rises to the top of a liquid. Regardless of the liquid, the bubbles operate the same way. Air becomes trapped in the liquid and slowly combines to form a bubble. The bubble will rise to the surface where it will collect in a thick layer of bubbles, or foam. It is possible that the foam would instead sink to the bottom, if the liquid were somehow lighter than air. When air is trapped in certain liquids, it can cause a problem when those liquids...

How to choose defoamer for textile  auxiliary ? Introduction   Large amount of foam is produced during the wet processing of textile dyeing and finishing because of the using textile auxiliaries, which affect the production operation, the production capacity go down, product quality would be degraded.   Therefore, it must remove the harm ful foam from the textile processing. By the way, it has been proved that adding defoamer is the best efficient way to eliminate foam in the textile processing. The following are some of our experiences in the development and customer service and how to use defoamers for textile printing and dyeing? Development of  defoamer for  textile Ø   The demand of defoamer for textile (1)   As end user of textile factory, usually evaluate the product quality by trial on the machine. So defoamer must meet: --Viscosity should not be too high, and defoamer is easy to use, easy to control the addition amou...

Defoamer for industrial circulating water Industrial circulating water defoamer is a defoamer developed according to the characteristics of industrial circulating water foaming in the cooling water system. Industrial circulating water is also called cooling circulating water, and is mainly composed of a circulating pump, a control system, a check valve, and the like. However, when water treatment is carried out using industrial cycle machine technology, foam is easily generated due to agitation, entry of soluble gas, equipment, water quality, additives, and the like. If these foams are discharged without treatment, the impact on the ecological environment will be very large. Therefore, it is necessary to use industrial circulating water defoamer at this time. Industrial circulating water process      The industrial circulating water defoaming agent is a defoaming agent which is prepared by compounding a modified silicon polyether with a modified siloxane ...

In the production of wet-process phosphoric acid, when the content of carbonate and organic matter in the phosphate rock powder is high, a large amount of CO 2 gas is generated by chemical reaction with the acid. With the fierce progress of the acid hydrolysis process, CO 2 is continuously dispersed in the reaction liquid containing organic components, forming a stable foam layer on the surface of the slurry, and its volume can usually reach 5% to 10% of the volume of the reaction liquid. Production brings many adverse effects: first, it affects the dispersion and acid hydrolysis reaction of phosphate ore pulp, which reduces the production capacity; second, the foam layer not only reduces the equipment utilization rate, but also makes it difficult to observe the material level; third, it hinders the reaction process The evaporation of middle water and the removal of heat cause the reaction temperature of the extraction tank t...