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20Khz Ultrasonic Defoaming system for degassing process

Ultrasonic sonochemistry equipment applied in different liquid system such as homogenization, cell division, dispersion, degassing or extraction.
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  • RPS-SONO20
  • Rps-sonic
  • RPS-SONO20

20Khz Ultrasonic Liquid Processor with Explosion Proof for CLEANING CHEMICALS Defoaming


The degassing process of ultrasonic probe sonicator


In general conditions, there is a certain number of dissolved gas in the liquid and form a state of equilibrium level, the concentration of gas may be affected by many factors including atmospheric pressure, agitating strength and temperature. Ultrasonic degassing can break the equilibrium state and reduce the gas concentration in the solution.


Via the oscillation generated by radiating surface of sonicator, the ultrasound wave is propagated into the fluid and generates a large number of small vacuum bubbles which are widely distributed in the liquid. Due to the increase in bubble volume, the pressure within the bubble is gradually decreased, and the dissolved gas tend to diffuse into the inflated bubble from surrounding solution until the cavitation bubble has reached its limit. Conversely, when the bubble begin to shrinking, the gas within bubble will diffuse back into the solution. Because the time is very short, there are still a lot of gases rise to the surface of the liquid together with bubbles. The whole process occurs as a repeated cycle and ultimately the degassing work is accomplished successfully.


On the other hand, the rapid process of sonication greatly reduces the contact time between the small bubbles and the fluid level. That means it's hard for gas to re-dissolve from the vacuum bubble to the fluid. This has important significance to degassing result especially for the fluids with higher viscosity e.g. epoxy resin or silicone oil.

The nodes attract matter and so the foam bubbles which implode as a result of the compression forces generated.

Parameter

Model

SONO20-1000

SONO20-2000

SONO15-3000

SONO20-3000

Frequency

20±0.5 KHz

20±0.5 KHz

15±0.5 KHz

20±0.5 KHz

Power

1000 W

2000 W

3000 W

3000 W

Voltage

220/110V

220/110V

220/110V

220/110V

Temperature

300 ℃

300 ℃

300 ℃

300 ℃

Pressure

35 MPa

35 MPa

35 MPa

35 MPa

Intensity of sound

20 W/cm²

40 W/cm²

60 W/cm²

60 W/cm²

Max Capacity

10 L/Min

15 L/Min

20 L/Min

20 L/Min

Tip Head Material

Titanium Alloy

Titanium Alloy

Titanium Alloy

Titanium Alloy




Factors affecting the ultrasonic degassing effect


1) The impact of sonicating conditions


Increased temperature helps to reduce the viscosity of the fluid medium, and further to improve the cavitation effect for ultrasonic degassing, yet the higher temperature may lead to a higher vapor pressure which can make up the gas concentration. After all things considered, we should find a balance to determine the optimal temperature for sonication. Of course, if the solution isn't exposed to any gas i.e. a gas pump is applied to form the vacuum above the liquid surface, heating the solution is a good method.


2) Influence on design of ultrasonic sonicator and container


First, to prevent the solution getting turbulent by controlling the amplitude of sonicator and agitation. The probe of ultrasonic sonicator with larger surface is beneficial to generate cavitation bubbles in a more extensive area. It means that the more gases can be trapped into the bubbles to obtain a better degassing effect. Other than that, in order to prevent the re-dissolving of gases from bubbles to the solution, the shallow tank or container will be conducive to reduce the time to the liquid surface.


Ultrasonic sonicator probe




Sonochemical reactions

Three classes of sonochemical reactions exist: homogeneous sonochemistry of liquids, heterogeneous sonochemistry of liquid-liquid or solid–liquid systems, and, overlapping with the aforementioned, sonocatalysis (the catalysis or increasing the rate of a chemical reaction with ultrasound). Sonoluminescence is a consequence of the same cavitation phenomena that is responsible for homogeneous sonochemistry. The chemical enhancement of reactions by ultrasound has been explored and has beneficial applications in mixed phase synthesis, materials chemistry, and biomedical uses. Because cavitation can only occur in liquids, chemical reactions are not seen in the ultrasonic irradiation of solids or solid–gas systems.

For example, in chemical kinetics, it has been observed that ultrasound can greatly enhance chemical reactivity in a number of systems by as much as a million-fold;[16] effectively acting to activate heterogeneous catalysts. In addition, in reactions at liquid-solid interfaces, ultrasound breaks up the solid pieces and exposes active clean surfaces through microjet pitting from cavitation near the surfaces and from fragmentation of solids by cavitation collapse nearby. This gives the solid reactant a larger surface area of active surfaces for the reaction to proceed over, increasing the observed rate of reaction. 

While the application of ultrasound often generates mixtures of products, a paper published in 2007 in the journal Nature described the use of ultrasound to selectively affect a certain cyclobutane ring-opening reaction. Atul Kumar has reported multicomponent reaction Hantzsch ester synthesis in Aqueous Micelles using ultrasound.

Some water pollutants, especially chlorinated organic compounds, can be destroyed sonochemically.

Sonochemistry can be performed by using a bath (usually used for ultrasonic cleaning) or with a high power probe, called an ultrasonic horn, which funnels and couples a piezoelectric element's energy int


See also

Ultrasound

Sonication

Ultrasonics

ultrasonic homogenizer

homogenizer

Homogenization (chemistry)

Sonoelectrochemistry

Kenneth S. Suslick


1. Can your sonochemistry horn be used in an acid (alkali) environment?

Under the acid (alkali) environment, the horn need to be customized according to the actual working conditions of customers.

 

2. Can the ultrasonic sonochemistry work continuously?

Yes , it can work 24hours continue.

 

3. What kind of material is the horn?

Titanium alloy, we also  customized ceramic horn for customer before.

 

4. What’s the time of delivery

 For Conventional horn, 3 days, for customized horn 7 work days.

 

5. Does ultrasonic extraction also require the addition of a chemical catalyst?

No , but some time need Mechanical stirring.

 

6. What’s the advantage of ultrasonic extraction?

Decline the extraction time, and increase the extraction ratio.

 

7. What’s the Processing capacity of one set ultrasonic extraction equipment?

Different horn different Processing capacity, for 2000W Nine-section whip horn can dealing 2L~10L/min.

 

8. Are you manufacturer?

We only manufacturer the transducer and generator our-self, for the horn , we design and buy raw material ,and process by other companies.

 

9. What’s the warranty of your sonochemistry equipment?

All equipment one year warranty.

 

10. Do you have Foreign agent?

No, our price already very low for everyone, no agent. We have OEM customer in USA and Germany.

 

11. Is it difficult to install the ultrasonic sonochemistry equipment?

No , it is easy , we will share Installation diagram, also can take install video for you.


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 Ms. Yvonne
  sales@xingultrasonic.com   
 0086-15658151051
   Room 1103B, Nature business building ,  NO.1160 GongWang Road ,FuYang, Hangzhou,Zhejiang,China

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