First, please watch the short demonstration video (below left), in which vegetable oil and water are emulsified at a low pressure of just 0.46 MPa without the use of a chemical emulsifier. The OHR MIXER can produce much larger amounts of emulsion at much lower pressure compared with other emulsification equipment.

The OHR MIXER’s emulsification capabilities match or exceed those of high-pressure emulsification equipment. On top of that, our mixer requires just 1% of the pressure. For example, light fuel oil and water can be broken down into particles 2–3 μm in size and emulsified simply by passing through the OHR MIXER with a pump pressure of just 0.3 MPa — all without chemical emulsifiers.
Please refer to the two graphs on the right, which compare real test results of the OHR MIXER and a homomixer (mechanical rotary shear-type emulsification equipment). Figure A shows the results for a target particle size of 5.0 microns; Figure B shows results for a target particle size of 20 microns. The red (resp. green) curve shows the particle size of the emulsified liquid produced by the OHR MIXER (resp. homomixer). As you can see, the OHR MIXER generates many more smaller particles than the homomixer.

The pressure required depends on on the viscosity of the liquid sent to the OHR MIXER. For example, for a target particle size of a few microns with a viscosity similar to that of water (≈ 1.0 mPa·s), 0.3 MPa will suffice. However, with a viscosity of 1,000 mPa·s, approximately 1.0 MPa of pressure is required as higher viscosity means higher flow resistance inside the OHR MIXER.
Even in this case, 1.0 MPa is still much lower than the 50–100 MPa usually required by high-pressure emulsifiers.

If you desire a finer emulsion, you can increase the pressure and the number of passes through the OHR MIXER. Because it emulsifiers in as little as 0.04 seconds, it takes just a few seconds to complete multiple pass-throughs. However, if the number of pass-throughs is increased but the pressure is kept the same, there may be cases where the particle size changes only fractionally or does not change at all. This depends on the nature of the emulsion. Please contact us for more information.

As shown in the diagrams on the right, the OHR MIXER can perform both continuous processing and batch processing. By combining one OHR MIXER and one pump, it is possible to treat any amount from 10 to 15,000 L/min. These high production volumes far outstrip those of competing products.

To help us determine the most suitable model of OHR MIXER for you, please access the form via the link below and email it to us with the following information:
http://www.ohr-labo.com/en/pdf/MXchecklist_form.pdf

1. Volume of each liquid
2. Specific gravity and viscosity of each liquid
3. If there is a pump you want to use in combination with an OHR MIXER, its specifications and type
4. Anything else of relevance (e.g. if the fluid is corrosive, any current problems, target particle size)

Note that, without an emulsifier, the boundary phase between oil and water will not change. The resulting emulsified state is therefore not permanent and the water and oil will separate after some time (not immediately). An emulsifier is not required when the emulsion is for immediate use. Otherwise, an emulsifier must be added in order to preserve the emulsified state.