The defoaming process and alkali, acid and other advantages of display-Iota

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News > Dynamic industry > The defoaming process and alkali, acid and other advantages of display

The defoaming process and alkali, acid and other advantages of display

Also known as antifoaming agent, defoaming agent, in the course of industrial production will produce a lot of harmful foam, need to add defoaming agent. Harmful foam is widely used in theremoval of latex, textile sizing, food fermentation, bio pharmaceutical, petrochemical, papermaking,paint, industrial cleaning, sewage treatment and other industries generated in the production process. All kinds of sewage treatment and industrial water system defoaming and antifoaming.

Defoamers defoaming mechanism is the origin of the senior alcohol or vegetable oil and the foam,when its into the foam liquid, will significantly reduce the surface tension. Because of the watersolubility of these substances is generally smaller, reducing surface tension is restricted to the foam part, surface tension and foam around the little change. Surface tension reducing part was strongly around the traction, extension, finally burst.

Defoaming agent is added to the foam system, will diffuse to the gas-liquid interface, which has afoam stabilizing effect of the surfactant to restore membrane elastic capacity. Foam drainage rate can reflect the stability of foam, add an accelerated foam drainage material, can also play a defoaming effect. Hydrophobic end on the bubble surface hydrophobic solid particles will attract surfactant, to produce hydrophilic and hydrophobic particles into the aqueous phase, thus plays the defoaming function.

Low molecular substances can be fully mixed with solution, can make the air bubbles surfactantsolubilized, make its effective concentration. This kind of effect of low molecular substances such as alcohol, ethanol, propyl alcohol, can not only reduce the surface layer of the surface active agent concentration, but also into the surfactant adsorption layer, reduce the tightness of the surfactant molecules, thereby weakening the foam stability.

For by means of foam surfactant electrical double layer interaction, produce stability foaming liquid,adding common electrolyte can disrupt surfactant of electric double layer on the defoaming action.

1, alkali defoaming agent

Rapid defoaming in high temperature alkali condition, lasting foam. Good stability, low dosage, high efficiency, no floating oil; widely used in paper-making black liquor treatment, alkali type textile printing and dyeing industry in refining agent, strong alkaline cleaning agent and other high temperature alkali aqueous foam.

2, acid defoaming agent

Composed of fatty acid ester and fatty amide and other substances, widely used in wet process phosphoric acid, titanium dioxide, boric acid and other acid production production system.

3, high viscosity foam defoaming agent of this product is for pulping black liquor, chemical processing, special chemical reaction to generate foam, its high viscosity, fine bubbles, difficult toeliminate a high efficient compound rotogravuer defoaming agent.

4, coating defoamers defoaming composition containing a variety of high quality, and wide application, it is especially suitable for the elimination of styrene acrylic latex, latex, pure acryliclatex, ethylene vinyl acetate latex foam system.

5, defoaming agent can effectively control the paper pulp, papermaking and improve the quality offoam flooding. Widely used in paper pulp defoaming system, can also be used for papermakingwastewater treatment, antifreeze, distillation system defoaming.

6, the cement mortar defoaming agent can effectively control the cement mortar system inside thebubble, the concrete component is more compact and bright.

7, industrial oil defoamer can effectively control the oil industry during the bubble, to improve oilproduction efficiency.

8, cleaning with defoaming agent can effectively control the foam cleaning agent.

9, the cationic system defoaming agent can effectively control system containing cationic bubble, is widely used in paper making, cationic rosin cationic cleaning agent, can also be used forpapermaking wastewater treatment, antifreeze, distillation system defoaming.

10, efficient fermentation defoamer ordinary type silicone defoamer poor high temperature resistance, anti foam to overcome the shortcoming of short time; for the accumulation of rise in fermentation tank foam can eliminate like polyether as fast, and the product has the incomparable time polyether defoaming advantages.