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1. (WO2014195243) SHAFT REACTOR FOR SOLID-STATE POST-CONDENSATION
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Claims:

1 . A shaft reactor for the treatment of bulk material, equipped with internals for lowering the static bed pressure, comprising vertical plates arranged radially around the geometrical axis of the shaft and in several planes, wherein the plates with one edge are attached to the inside of the reactor wall, characterized in that in the vertical geometrical axis of the shaft a continuous support tube extending through the entire shaft is arranged, to which the plates of all planes are attached.

2. The reactor according to claim 1 , characterized in that the angle at which the plates of a plane are arranged to each other is 90°.

3. The reactor according to any of the preceding claims, characterized in that at its ends the support tube each has a conical cap with open tip.

4. The reactor according to claim 3, characterized in that the tip of the cone located at the upper end of the support tube is covered by a hollow cone such that no granules can get into the support tube, but gas can escape therefrom.

5. The reactor according to any of the preceding claims, characterized in that the plates are arranged rotated against each other by an angle around the tube from plane to plane.

6. The reactor according to any of the preceding claims, characterized in that the plates extend with a curvature from the support tube to the shaft wall.

7. The reactor according to any of the preceding claims, characterized in that on the bottom surface of at least one of the plates a protective envelope extends for accommodating a temperature sensor.

8. Use of the reactor according to claims 1 to 7 as solid-state post-condensation reactor (SSP reactor) for the treatment of polymer granules obtained by polycondensation.

9. The use according to claim 8 for the dealdehydisation of polyester granules.