公开(公告)号：DE2415169A1

公开(公告)日：1975-10-16

申请号：DE2415169

申请日：1974-03-29

Applicant: BASF AG

Inventor： HERRMANN EBERHARD ,  PESCHAU GERHARD DIPL ING ,  KIEL WALTER ,  STOCKBURGER DIETER DR ,  BRUNOLD ANDREAS DIPL ING ,  HECK WOLFGANG DIPL CHEM DR ,  OPP KARL DIPL CHEM DR

IPC: B01D7/02 ,  C01F7/58 ,  B01D7/00 ,  B01D5/00 ,  B01D53/00

Abstract: Vapours and gases containing compds. which sublime from a reactor are fed into a desublimation zone which consists of a cooled cylindrical shell in which a bed of desublimed particles are held in turbulent motion by agitator with blades. If the angular velocity of the rotor is W and the i. radius of the shell R, the Froude number is defined as Rw2/g where g is the acceleration due to gravity. Fr. should be above 1, pref. 5-10. The gas flowsin at one side of the shell and out with the particles at the other. The agitator is heated. There is an annular space for collecting product at the end of the shell. There should be a clearance of 0.5-12mm between the edge of the blades and the shell.