VACUUM DRYER AND VACUUM DRYING METHOD

PROBLEM TO BE SOLVED: To provide a vacuum dryer capable of attaining higher drying efficiency than that of the conventional dryer and further reducing a moisture content after drying solid matter of high water content.SOLUTION: A vacuum dryer 1 is a device for vacuum drying solid matter of high water content and comprises a lateral installed type drying tank 21 storing the solid matter of high water content that is oscillated or rotated around an axis line C in a substantially horizontal direction and heating means 22 for heating the drying tank 21 from outside of the drying tank 21. Since the inner surface of a part covered by the heating means 22 of the lateral installed type drying tank 21 becomes a heat transfer surface, solid matter of high water content and water exuded out of the solid matter of high water content due to oscillation or rotation of the drying tank 21 can be efficiently brought into contact with the heat transfer surface.SELECTED DRAWING: Figure 1 【課題】従来よりも乾燥効率が高く、高含水固形物の乾燥後の含水比を一層低下させることができる真空乾燥装置を提供する。【解決手段】真空乾燥装置１は、高含水固形物を真空乾燥するための装置であり、高含水固形物を収容して略水平方向の軸線Ｃ回りに揺動又は回転する横置き型の乾燥タンク２１と、乾燥タンク２１の外側から乾燥タンク２１を加熱する加熱手段２２と、を備える。横置き型の乾燥タンク２１のうち加熱手段２２に覆われた部分の内表面が伝熱面となるため、乾燥タンク２１の揺動又は回転により高含水固形物及び高含水固形物から浸み出した水が効率的に当該伝熱面に接触することができる。【選択図】図１