The basic principles of our technology BioDieselMach ®

The basic principles of our technology

Our technology involves the Bernulli principle, which is a case of the general energy preservation law for a flow of an ideal uncompressible liquid (no internal friction):

ρv²/2 + ρgH + P = const,

where

ρ - density of the liquid

v - velocity of the flow

H - height of the liquid

P - pressure.

The constant on the right side of the equation is called the full pressure. The dimension of all of the equation components is a unit of energy per unit of liquid volume.

This is called the Bernulli equation.

For a horizontal tube, H = const, and the equation will look look this:

ρv²/2 + P = const

According to Bernulli principle, full pressure in a stabilized flow of liquid remains constant along this flow. Full pressure consists of static pressure, dynamic pressure and weight pressure. The Bernulli principle implies that in the case of decrease of the flow’s cross-section, as the velocity (dynamic pressure) of the flow increases, which in turn, decreases static pressure. The Bernulli principle is also true for laminar flows of gases. The phenomenon of decrease of static pressure with increase of velocity of the flow is the principle of operation of various types of pumps and flow meters.

 The Bernulli principle works ideally only for zero-viscosity liquids, i.e. liquids that do not have friction with and do not stick to the pipe surface. In reality, experiments show that velocity of a liquid on the surface of a solid body always precisely equals zero. This is the reason that various surfaces, subjected to flows of liquids, always have some kind of residue; this would also explain the layer of dust on a ventilator.

The Bernulli principle can be applied to a flow of an ideal uncompressible liquid through a small opening in a side wall or in the bottom of a wide vessel. According to the Bernulli principle:

ρgH + P0 = ρv²/2 + P0,

where

P0 – atmospheric pressure;

H – the height of the liquid in the vessel;

v – outflowing fluid velocity;

Hence v = (2gh)^0.5. This is the Toricelli formula. It shows that the liquid flows from an opening in a wide vessel at the same velocity as a free falling object.

Quality of the feedstock oil.

Hydrodynamic modules, produced by our company, do not require pre-treatment of oil. Those modules can successfully process both refined and raw oil. The equipment can process multiple oil types, such as rapeseed, sunflower, palm, mustard, soybean oil, canola oil, if the oil’s acid number does not exceed 6. No modification to the equipment is needed to switch from on type of the oil to another.

However, to obtain a high quality biodiesel, the oil should be as close to the standards as possible. On the right, you can see a table with fatty acid composition of rapeseed oil.

 Rapeseed oil fat and acid composition

Minimal energy consumption.

The design of our system uses stream oil heaters; part of the heat is compensated by the reaction of methanol and alkali. This type of heating saves electric energy. Besides, the technology does not use excess methanol, which is always present in the end product (methyl ester) in a batch reaction process. And since the reaction time is drastically reduced compared to the old batch process, due to the stream nature of the reaction, the energy consumption is reduced 9 to 11 times.

“Single Pass” reaction.

The hydrodynamic technology does not require a second stage transesterification, unlike the old batch systems. Reaction time is reduced by several times, but the capacities of the system we build can be both small and very large with very compact dimensions of the unit.

Quality of the Biodiesel is in compliance with ASTM D-6751 and EN 14214 Standards