Method and apparatus for producing fine particles
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United States of America Patent
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Issued Date -
Oct 19, 2006
app pub date -
Dec 2, 2003
filing date -
Feb 3, 2003
priority date (Note) -
Abandoned
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Abstract
A producing apparatus (1) of fine particles includes two pipes constructed by an outer pipe (11) and an inner pipe (21) arranged in a concentric shape. The tip (21a) of the inner pipe (21) is spaced from the tip (11b) of the outer pipe (11) by a comparatively long distance. Fluid II is flowed toward the tip (21a) of the inner pipe (21) within the inner pipe (21). Fluid I is flowed toward the tip of the outer pipe (11) as a continuous phase within the outer pipe (11). The flow velocities of the fluid I and the fluid II within the outer pipe (11) and the inner pipe (21) are set to appropriate values by controlling the operations of respective pumps (14, 24) by commands from a controller (31). Thus, the fluid II exhausted from the tip (21a) of the inner pipe (21) becomes a droplet (3) having a in approximately spherical shape surrounded by the fluid I within the outer pipe (11) and having a predetermined desirable diameter.
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