Process for convectively drying and optionally roasting and...

Details Process for convectively drying and optionally roasting and... Process for convectively drying and optionally roasting and...

F - Mech Eng,Light,Heat,Weapons

26

B

34/31

F26B 17/12 (2006.01)

Patent

CA 1158857

- 18 - ABSTRACT The invention relates to a process and a device for convectively drying granular bulk material in a silo. A hot gas jet is vertically blown upward through a jet nozzle or jet aperture (orifice), a tube having a wall closed over its 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 ?ube is of such a length that it projects with its top above the bulk material.

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