| 摘要 |
PURPOSE:To separate and recover the specific component (product) having the specified ultimate purity by measuring exactly and surely the temp. in a high- pressure vessel at the point of the time when the sepn. in high-pressure crystallization is started and controlling further adequately the pressure therein. CONSTITUTION:A raw material is supplied into a high-pressure treating chamber 3 and thereafter a high pressure is acted to said raw material to accelerate the crystallization of the specific component. A liquid discharge valve 11 is opened upon ending of the crystallization to start the filtration is compressed stage for a solid-liquid sepn. The liquid material flows through the spacing of a heat insulating layer 5 provided on the rear side of filters 4a, 4b then through a discharge passage 6 to a discharge pipeline L and is discharged through the valve 11. The temp. of the waste liquid is measured by a thermocouple 7 during this time. The sectional area of the passage 6 is made substantially larger than the sectional area of the discharge pipeline L and the heat insulating layers 5, 8 are disposed around the temp. sensing part S to prevent said part from receiving the influence of the change in the temp. of a bottom plate 2 and therefore the temp. in the chamber 3 at the time of starting the solid-liquid sepn. and thereafter is exactly measured.
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