Devices and Methods for Automated Mobile BioDiesel Production
At least one exemplary embodiment is directed to a device that uses a co-axial oil and methoxide flow to near real time mix the two flows into biodiesel.
This application claims the priority benefit of 60/744,848, 60/744,945, 60/745,060, and 60/745,176, under 35 U.S.C. § 119(e), all of which are incorporated herein by reference in their entirety.
FIELD OF THE INVENTIONThe invention relates in general to devices and methods of for the automation of biodiesel production and in particular, though not exclusively, for the mobile production of biodiesel.
BACKGROUND OF THE INVENTIONBiodiesel has several manual elements such as titration as part of the production process. Additionally the formation time can take up to 8 hours.
The current method (
At least one exemplary embodiment is directed to an automated titration system.
At least one exemplary embodiment is directed to an automated methoxide process.
At least one exemplary embodiment is directed to a near real time biodiesel production mixing process.
Further areas of applicability of exemplary embodiments of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are intended for purposes of illustration only and are not intended to limited the scope of the invention.
Embodiments of the present invention will become apparent from the following detailed description, taken in conjunction with the drawings in which:
The following description of exemplary embodiment(s) is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Processes, methods, materials and devices known by one of ordinary skill in the relevant arts may not be discussed in detail but are intended to be part of the enabling discussion where appropriate.
Additionally, the size of structures formed using the methods and devices of exemplary embodiments are not limited by any discussion herein (e.g., the sizes of structures can be macro (centimeter, meter, size), micro (micro meter), nanometer size and smaller).
Additionally, examples of mixing/separating/sampling device(s) are discussed, however exemplary embodiments are not limited to any particular device for mixing, separating, and sampling.
Additionally, other fluid besides those used in biodiesel production can be used with the exemplary embodiments including gases.
At least one exemplary embodiment is directed to a biodiesel processor system including a mixing region, spin separating region, and a flow separating region, with optional recycling loops feeding back into the system. Note that if a feedback system is used then in at least one exemplary embodiment titration is not used to determine the appropriate amount of catalyst. Instead an amount is assumed to correspond to poor oil, combined to form methoxide, and then recycled through the system through the waste tubes until used.
The spin separator system can be cylindrical or slightly expanding (to have a velocity component along the wall driving the fluid forward axially). As it spins the portions with a higher specific gravity will tend toward the walls while the lower specific gravities will accumulate toward the central portions of the flow. For example if the entire spin separator region if filled with mixed biodiesel, methanol, methoxide, waste, then the parts will separate as they start to spin inside the rotating cylinder (Note, internal fins can be provided to aid the spinning). As the flow travels down the fluid portions start to separate axially. When a useable amount has been separated, e.g. determined by simple experiments, (for example the first 3 mm near the wall are 95% glycerin, 10 cm along the spin axis) then co-axial bleed tubes (flow separator system) can take those portions of the flow out of the recycling flow and further purified if needed (e.g., the axial spin water washing system illustrated in
The pressure of the fluid saturating the porous block can be varied to minimize feedstock absorption by the porous block while encouraging the fluid in the porous block lining the tube surface to enter the feedstock oil stream. Thus the fluid absorbed in the porous block can then enter the feedstock oil stream, mix and reacts to produce a chemical product (e.g., biodiesel). The size of the block, tube diameters, porosity of the block, and pressures can be easily varied to maximize reaction.
Any non converted feedstock oil, catalyst, methanol, methoxide, and any other fluid used in the process can be recycled in a feedback loop.
Additionally the exemplary embodiment can include a gear driven axial spin separator. In the non-limiting example a tube can be tight fitted through the hole of a couple of bearing rings. The tight fit can be fluid tight but can also include a sealant at an interface. The interface can include a sub-tube that delivers a first fluid (feedstock oil (FO)) into the tight fitted tube. For the tube to rotate there is a gap G between the plate and the tube (which has been tight fitted to the bearing ring). A seal on the plate can keep fluid from leaking radially along the plate. Note also that the plate will have to have clearance with respect to the inner portion of the bearing ring (the center rotating part). Thus depending on how close the clearance is there can be some fluid leakage. To minimize this the clearance is kept small and a positive pressure P* is exerted to aid in the surface tension retention of the fluid in the rotating tube.
Additionally at least one exemplary embodiment can include a magnetically driven internal separator. An internally contained spin separation system in accordance with at least one exemplary embodiment can include, bearing rings which are contained within a fluid chamber (note that the bearings will need to be reasonable resistant to the reactants (BD, FO, Methanol, Methoxide, waste, and catalyst). In the non-limiting example the outside surface of the rotating tube has attached permanent magnets that can be influences by and externally varying magnetic field. The externally varying magnetic field can be generated by an oscillating magnetic device M1, much like an electric generator is coerced to spin, except in this case there are no contact wires directly to the spinning portion, and the magnets reside on the spinning portion instead of the stationary portion.
Additionally, exemplary embodiments can include a cleansing unit comprising, a first chamber, wherein the first chamber includes unprocessed biodiesel; a second chamber, wherein the first chamber is connected to the second chamber via tubes; and a third chamber, wherein the third chamber includes water that is cycled through the third chamber, wherein the third chamber lies between the first and second chamber, wherein the tubes pass through the water of the third chamber, wherein the tubes are made of a material that facilitate the formation of an interface between the water and unprocessed biodiesel where water soluble contaminants in the unprocessed biodiesel become at least partially removed and dissolved into the water, and where the biodiesel entering the second chamber is processed in that at least a portion of the water soluble contaminants have been removed.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims
1. A method of processing and delivering biofuels comprising:
- unloading at least a first portion of a raw material in an at least one raw material storage location into a mobile processing biofuels plant, wherein the mobile biofuels plant has been transported to a region near the raw material storage location;
- mixing the first portion with at least one second portion of a mixing substance, wherein the mixing of the first and second portions creates a third portion of biofuel; and
- unloading from the mobile biofuels plant the third portion into a biofuels storage location, wherein the mobile biofuels plant can be moved from the biofuels storage location after unloading the third portion.
2. The method according to claim 1 wherein the mixing substance is methanol.
3. The method according to claim 2, further including a second mixing substance that is also mixed with the first and second portions.
4. The method according to claim 3, wherein the mixing of the mixing substance and the second mixing substance forms methoxide.
5. A spin separator comprising:
- a spinning chamber, wherein the spinning chamber has a spin axis; and
- a rotation support, wherein the rotation support is configured to spin the chamber at a predetermined rate that is related to a selected separation portion along the spin axis, wherein the spinning chamber separates flow inserted along the spin axis and expelled along the spin axis, into axially separated portions in accordance with their specific gravity.
6. A flow separation system comprising:
- the spin separator according to claim 5; and
- at least two co-axial tubes, a first tube and a second tube, configured to receive a portion of a first specific gravity fluid and a second specific gravity fluid respectively, wherein the first specific gravity and second specific gravity fluids are separated by the spin separator.
7. A biodiesel processing device comprising:
- an inner flow of feedstock oil; and
- an outer flow of methoxide, wherein the outer flow of methoxide is a co-axial sheath around the inner flow, and wherein the outer and inner flow at least partially mix forming a portion of biodiesel.
8. The biodiesel processing device according to claim 7, wherein the inner and outer flow impinge upon a mixing grate.
Type: Application
Filed: Apr 16, 2007
Publication Date: Oct 18, 2007
Inventor: John P. Keady (Fairfax Station, VA)
Application Number: 11/735,853
International Classification: C10L 5/00 (20060101);