Device and methodology for improved mixing of liquids and solids
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United States of America Patent
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Dec 25, 2007
Grant Date -
Sep 1, 2005
app pub date -
Dec 22, 2004
filing date -
Dec 23, 2003
priority date (Note) -
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Abstract
An eductor for mixing liquids and solid particles includes a nozzle, an initial mixing chamber, a first diffuser, an intermediate mixing chamber and a second diffuser. The nozzle includes a semicircular nozzle outlet that is offset from a centrally-located first axis. Motive flow is accelerated through the nozzle through a first and second acceleration segment. Solid particles are added to the motive flow in the initial mixing chamber and directed to the first diffuser. Each diffuser includes an acceleration and a deceleration segment separated by an elliptically-shaped throat. The intermediate mixing chamber is located between the first and second diffusers. A method for mixing liquids and solids includes introducing a motive flow into an initial mixing chamber, creating a vacuum in the initial mixing chamber to induce solids into the motive fluid, providing a region of turbulence to enhance mixing of the motive flow and solid particles, and diffusing the motive flow to further increase boundary flow separation conducive to mixing.
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