| 摘要 |
PCT No. PCT/NL81/00009 Sec. 371 Date Nov. 24, 1981 Sec. 102(e) Date Nov. 14, 1981 PCT Filed Apr. 3, 1981 PCT Pub. No. WO81/02924 PCT Pub. Date Oct. 15, 1981.Process and device for convectively drying grannular bulk material in a silo. A hot gas jet is vertically blown upward through a jet nozzle of jet aperture (orifice), a tube having a wall closed over is entire length is inserted into the bulk material coaxially with the axis of the vertical gas jet, the tube being lowered up to a particular distance above the bottom of the silo, in such a way that continuously an amount of the descending bulk material is entrained by the recycling gas jet and is blown into the vertically introduced upwardly directed jet of hot drying gas and the tube is of such a length that it projects with its top above the bulk material.
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