Fine particle generating apparatus of fine particulate compound, apparatus for producing fine particulate compound and method for producing fine particulate compound

摘要

PROBLEM TO BE SOLVED: To facilitate the controlling of the particle shape and the particle size of a chemically combined fine particle explosive when performing the recrystallization of the chemically combined explosive using a supercritical CO₂.;SOLUTION: There are provided a first conduit that introduces a solution of the chemically combined explosive being dissolved in an organic solvent, and a second conduit that is arranged coaxially with the first conduit and so as to surround the first conduit and that introduces the supercritical CO₂, wherein the exit end of the second conduit is longer than the exit end of the first conduit by 5 mm or more, whereby the second conduit forms a single flow channel for performing the recrystallization of the chemically combined explosive by contacting the supercritical CO₂ with the solution. In the single flow channel the second conduit has the same inner diameter and a length of 5-200 mm. When the pressure within the second conduit reaches to a given pressure during introducing the supercritical CO₂ into the second conduit, the solution is introduced into the first conduit and in the single flow channel the recrystallization to the chemically combined fine particle explosive having a spherical shape is occurred by contacting the supercritical CO₂ with the solution, and the recrystallized chemically combined fine particle explosive is recovered.;COPYRIGHT: (C)2006,JPO&NCIPI