[Emulsification] The only inline mixer that can replace high pressure emulsification equipment.

The only inline mixer that can replace high pressure emulsification equipment

We have supplied OHR MIXERs used for emulsification in 295 cases (as of Jan 2020)

Emulsification is the integration of liquids that separate normally such as ‘oil’ and ‘water’ and is used for many types of food products (mayonnaise, dressing, etc), fuel (emulsified fuel), resin, cosmetics and others. Emulsification is extremely important because good or bad emulsification affects the quality of the products in product development and mass production.
It is easy to emulsify a very small amount of liquid under laboratory conditions by applying high pressure, heat and adding chemicals. But very expensive high-maintenance emulsification equipment is required for industrial production. This equipment can only emulsify a small amount and uses a lot of electricity.
Conventional emulsification equipment has complicated mechanisms. Typically there are two types of conventional emulsification equipment. One type has rotating stirring blades that run at high speed in a tank and can be used for batch production only. The other type collides fluids at very high pressure through very narrow pipes. Both types of equipment are very expensive to purchase and maintain.

Real-world examples of emulsification with OHR MIXER

Water and light oil can be emulsified at a very low pressure of 0.3MPa


The OHR MIXER’s emulsification capacity can match or surpasses high pressure emulsification equipment. The required pressure for OHR MIXER is only 1% of the pressure required for high pressure emulsification equipment. For example, light oil and water are broken down to 2~3μm in size and emulsified through the OHR MIXER using only a pump at 0.3MPa without adding an emulsifier.

Please see the data comparing an OHR MIXER with a homomixer (mechanical rotary shear type emulsification equipment). The two graphs on the right show emulsification test results. The upper one contains target particle size set at 5.0μm and the lower one contains target particle size set at 20μm. (The factory that conducted this test produces several types of emulsified liquids with differing particle sizes according to the product requirement.)
The red line is the particle size of the emulsified liquid made by the OHR MIXER. (Liquids passed through the OHR MIXER three times at 0.4MPa.) The green line is the particle size of the emulsified liquid made by the homomixer.
The OHR MIXER generates many more smaller particles than the homomixer as shown in the graphs on the right.
If you want to make smaller sized emulsified liquid particles, increase the pressure of the pump that sends liquids to the OHR MIXER.

Only increasing the number of treatment cycles through the OHR MIXER without increasing the pump pressure may decrease the particle size slightly. The OHR MIXER emulsifies in just a moment at 0.04 seconds, so even passing the liquids through the OHR MIXER more than once only takes a few seconds.

We will show you the most suitable model of OHR MIXER and pump specs to match your requirements


The OHR emulsification method is very simple. Two typical treatment processes are shown on the right. Continuous treatment and batch treatment are also possible according to your request.

We have a lineup of 15 models of OHR MIXER from test size (10L/min) to a very large size (15,000L/min) to suit your uses and treatment volumes. You can emulsify with a combination of just one OHR MIXER and one pump even when treatment volume is very large.

In order to select the most suitable model of OHR MIXER, please provide the following minimum information on the checklist form.
Click the URL below to fill in the checklist form and send it to us.

  1. Volume of each liquid
  2. Specific gravity and viscosity of each liquid
  3. Spec and type of pump you want to use with the OHR MIXER
    (*if you have a pump)
  4. Special remarks
    (e.g. whether it is corrosive fluid, problems you are having, etc.)


Note: The boundary phase between oil and water does not change without adding an emulsifier. Therefore the emulsification state after passing through the OHR MIXER is not permanent, and the water and oil will separate after some time, but not immediately. Hence you do not need to add an emulsifier when you use the emulsified liquid immediately after production.
However, when you do not use the emulsified liquid immediately after production, you need to add an emulsifier in order to keep the emulsification state.

For more detail, please contact us.