Laboratory new material ultrasonic disperser

Laboratory new material ultrasonic disperser：

1. Acoustic chemistry is an emerging interdisciplinary field that mainly refers to the use of ultrasound to accelerate chemical reactions or trigger new reaction channels, in order to improve chemical reaction yields or obtain new chemical reaction products.

The active force of sonochemical reactions comes from acoustic cavitation, which is accompanied by physical conditions such as high temperature (greater than 5000K), high pressure (greater than 2.03 × 108Pa), shock waves or microjets during the implosion of cavitation bubbles

2. The application of sonochemistry has a wide range of applications, which can be roughly classified into nine categories: biochemistry, analytical chemistry, catalytic chemistry, electrochemistry, photochemistry, environmental chemistry, mineral chemical treatment, extraction and separation, synthesis and degradation.

Product Description:

When ultrasound propagates in liquid media, it produces a series of effects such as mechanics, thermodynamics, optics, electricity, and chemistry through mechanical, cavitation, and thermal interactions. Especially high-power ultrasound can generate strong cavitation, resulting in instantaneous high temperature, high pressure, vacuum, and microjet formation locally.

Ultrasonic technology, as a physical means and tool, can generate a series of similar conditions in commonly used media for chemical reactions. This energy can not only excite or promote many chemical reactions, accelerate the speed of chemical reactions, but also change the direction of certain chemical reactions, producing some unexpected effects and miracles. It is generally believed that the occurrence of the above phenomenon is mainly due to the mechanical and cavitation effects of ultrasound, which are the result of their changes in the reaction conditions and environment.

Mechanical action - Introducing ultrasonic waves into a chemical reaction system, ultrasonic waves can cause substances to undergo intense forced motion, generating unidirectional forces to accelerate the transmission and diffusion of substances. They can replace mechanical stirring and cause substances to peel off from the surface, thereby renewing the interface.

Cavitation - In some cases, the generation of ultrasonic effects is related to cavitation mechanisms. Acoustic cavitation refers to a series of dynamic processes that occur in tiny bubbles (cavities) existing in liquids under the action of sound waves: oscillation, expansion, contraction, and even collapse. At the point of cavitation, the local state of the liquid undergoes significant changes, resulting in high temperature and high pressure. Provides a new and very unique physical and chemical environment for chemical reactions that are difficult or impossible to achieve under general conditions

Catalytic chemical reaction——

① High temperature and high pressure conditions are conducive to the cracking of reactants into free radicals and divalent carbon, forming more reactive species;

② Shock waves and microjets have desorption and cleaning effects on solid surfaces (such as catalysts), which can remove surface reaction products or intermediates and the passivation layer on the catalyst surface;

③ Shock waves may damage the structure of reactants;

④ Dispersed reactant system;

⑤ Ultrasonic cavitation of metal surfaces, shock waves causing deformation of the metal lattice and formation of internal strain zones, enhances the chemical reactivity of the metal;

⑥ Promote the solvent to penetrate deep into the interior of the solid, resulting in the so-called inclusion reaction;

⑦ Improve catalyst dispersion.

operation mode:

The focused probe type high-power ultrasonic sonochemical treatment system can have two working modes.

One way is to insert an ultrasonic transducer into the liquid being processed while it flows and reacts normally in the container, emitting ultrasonic waves. The processed liquid flows through the container and is simultaneously subjected to strong ultrasonic waves. The size of the reaction vessel or the temperature can vary. Generally speaking, for containers of the same size, the lower the flow rate of the liquid or the longer it stays in the container, the stronger the ultrasonic effect and, of course, the lower the yield. On the contrary, the shorter the duration of ultrasonic treatment, the lower the intensity of ultrasonic treatment and the higher the flow rate (i.e. yield). This method is also suitable for anti scaling and descaling applications.

Another way of processing is to use our company's dedicated ultrasonic reactor to form a complete sonochemical reactor. The processed liquid flows into one end of the reaction vessel, undergoes ultrasonic treatment, and then flows out from the other end. This method requires minimal modifications to the original chemical system.

Main configurations:

1. Optional frequency range: 19.5KHz to 20.00KHz.

2. Common frequency: 20kHz

3. Industrial grade nominal power per unit: 1500W, 2000W, 3000W, can also be used in combination with multiple units.

4. Material of vibrating rod tool head (probe): titanium alloy.

5. Typical weight of ultrasonic vibration components: 14 kg

6. Drive power supply: analog power supply; Numerical control power supply: automatic frequency tracking, over-current and over-voltage protection, adjustable power size.

7. Typical dimensions of the drive power supply: 350 × 300 × 150mm

8. Typical weight of drive power supply: 9.5kg

Applicable industries:

1. Biological industry: such as essential oil extraction, traditional Chinese medicine production, natural pigment extraction, polysaccharide extraction, flavonoid extraction, alkaloid extraction, polyphenol extraction, organic acid extraction, oil extraction, etc,

2. Laboratory university research institute applications: chemical agitation, logistics agitation, cell crushing, product crushing, material dispersion (suspension preparation) and coagulation,

3. Chemical industry: ultrasonic emulsification and homogenization, ultrasonic gel liquefaction, resin defoaming, ultrasonic crude oil demulsification.

4. Ultrasonic biodiesel production significantly accelerates and enhances ester exchange reactions and various chemical reactions in various chemical production processes.

5. Water treatment industry: degradation of polluted water quality

6. Food and cosmetics industry: refinement of alcoholic beverages, refinement of cosmetic particles, and preparation of nanoparticles

7. Graphene industry: graphene dispersion, preparation of graphene nanoparticles