Agitating – By vibration – Of stirrer
Patent
1998-11-18
2000-11-21
Cooley, Charles E.
Agitating
By vibration
Of stirrer
3661762, 366340, B01F 308, B01F 506
Patent
active
061492930
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns an emulsifying module for producing a mixture or an ultracolloidal emulsion from at least two immiscible fluids, one of which is a primary fluid, specifically, an oily liquid fluid mixed with water and/or various liquid or gaseous additives.
BACKGROUND OF THE INVENTION
There is a demand for thoroughly mixed or ultrafine, stable mixtures in various fields, such as the production of cosmetics, foods, and especially fuels and combustibles.
Numerous emulsifiers or emulsionizers which produce an oil-in water type emulsion are already known. Such an emulsion has a certain degree of fineness and is only minimally stable, enough to satisfy its intended purpose.
Many emulsifiers are merely improved homogenizers capable of producing only a low quality, unstable, coarse emulsion.
However, emulsifiers do exist are which capable of producing an emulsion with adequate characteristics and qualities for a particular purpose.
Movable disc emulsifiers for immiscible liquids are known in the art, as described in Patent Nos. FR 2 461 515 filed Jul. 27, 1979 by Robert Guerin and FR 2 731 504 by Societe MEROBEL.
In the first invention of Robert Guerin, the emulsifier is formed by stacking annular units stored in a tube sealed at each end by a coupling piece. These annular pieces can slide along a median longitudinal axis and they are separated from one another by a central lateral tubular extension allowing them to interlock. Each annular element has two types of peripheral notches disposed so that they form baffled passageways between one annular element and the next. The stack forms a block maintained in flexible equilibrium at a distance from the tube extremities by helicoidal springs which simultaneously provide cohesion to the unit. The fluid arrives through the hollow extremities of the median longitudinal axis on which the annular elements are mounted. The liquid mixture travels along the annular space occupied by the annular elements and leaves the tube in an emulsified state. Thus, the entire block is subjected to oscillation caused by the pulsating effects of cavitation.
Since the liquid passes through only the notches in this unit, the emulsifier loses considerable capacity and the emulsifying effect is limited to what can occur during passage through the baffles.
Additionally, the configuration of this device and the stacked arrangement cause the annular elements to become blocked fairly quickly.
Furthermore, it is not possible to produce an ultrafine emulsion, as there is no high frequency fluid shearing.
The main features of the second invention derive from the first invention. The stack consists of a succession of perforated cylindrical plates and interposed layers of passageways with bi-conical tapered portions separated from one another by empty areas, with the unit forming a block fitted within a tubular body. The passageways between successive plates and layers are laterally offset so as to form baffles.
Here again, the baffle structure prevents achieving an ultrafine emulsion. The baffle structure forming a compact stack either will not allow the plates and layers to vibrate at all, or prevents them from vibrating enough to attain the amplitudes required to make the even higher frequencies effective. Such high frequency vibrations combine with the shearing phenomenon to produce an ultrafine emulsion.
Also known in the art is Russian Patent No. SU 1 678 426 filed Oct. 10, 1989 relating to a liquid cavitation emulsifier.
This mixing device consists of masses that are movable along a median longitudinal axis, separated from one another by a spring. These masses are solid and thick. They can only be displaced enough to oscillate at a low speed, thus preventing auto-resonance at a high enough frequency to create an emulsion, and certainly not an ultrafine emulsion such as the emulsion which is the object of the present invention.
The goal of the invention is to produce an ultrafine emulsion from two immiscible liquids while using the smallest amount of energy possible.
With the m
REFERENCES:
patent: 1848100 (1932-03-01), Benner et al.
patent: 2198614 (1940-04-01), Hayes
patent: 4218221 (1980-08-01), Cottell
patent: 4352573 (1982-10-01), Pandolfe
patent: 4514095 (1985-04-01), Ehrfeld et al.
patent: 4869849 (1989-09-01), Hirose et al.
patent: 5720551 (1998-02-01), Shechter
Database WPI, Section Ch. Week 8618, Derwent Publications Ltd., London, GB; Class H08, AN 86-118158 XP002025233 & SU 1184552A (Roof Mydroinsul Mat), Oct. 15, 1985.
Database WPI, Section Ch. Week 9233, Derwent PUblications Ltd., London, GB; Class D14, AN 92-275073 XP002024742 & SU 1678426A (Kiev Tekhenergokimprom Res Proon Assoc); Sep. 23, 1991.
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