| US 7,476,297 B2 | ||
| Device and method for carrying out heterogeneously-catalysed reactive distillations in particular for the production of pseudoionone | ||
| Gerd Kaibel, Lampertheim (Germany); Christian Miller, Ruppertsberg (Germany); Walter Dobler, Schwetzingen (Germany); Thomas Dirnsteiner, Mainz (Germany); Marcus Sigl, Mannheim (Germany); Helmut Jansen, Dormagen (Germany); and Björn Kaibel, Hilden (Germany) | ||
| Assigned to BASF SE, Ludwigshafen (Germany) | ||
| Appl. No. 10/497,520 PCT Filed Dec. 05, 2002, PCT No. PCT/EP02/13796 § 371(c)(1), (2), (4) Date Jun. 03, 2004, PCT Pub. No. WO03/047747, PCT Pub. Date Jun. 12, 2003. |
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| Claims priority of application No. 101 59 821 (DE), filed on Dec. 06, 2001. | ||
| Prior Publication US 2005/0016830 A1, Jan. 27, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B01D 3/32 (2006.01); B01J 8/02 (2006.01); B01J 19/32 (2006.01) | ||
| U.S. Cl. 202—158 [203/29; 203/DIG. 6; 261/112.2; 422/211] | 16 Claims |
| 1. A column, for carrying out reactive distillations in the presence of a heterogeneous particulate catalyst,
said column comprising a first region and a second region arranged in alternation,
wherein the first region comprises an ordered packing formed from ordered sheet metal packings, the ordered sheet metal packings
of the first region having a specific surface area, the ordered sheet metal packings of the first region forming intermediate
spaces in the column interior,
wherein the second region comprises an ordered packing formed from ordered sheet metal packings, the ordered sheet metal packings
of the second region having a specific surface area, the ordered sheet metal packings of the second region forming intermediate
spaces in the column interior, and
wherein the specific surface areas of the ordered sheet metal packings of the first and second regions differ in such a manner
that when catalyst particles are introduced into the intermediate spaces of the first region, but not the second region, and
when a gas stream is passed through the column,
a quotient of hydraulic diameter and equivalent diameter of the catalyst particles present in the first region is in the range
from 2 to 20,
the catalyst particles are distributed between the first and second region and discharged loose under the action of gravity,
and
a quotient of hydraulic diameter and equivalent diameter of the catalyst particles present in the second region is less than
1.
|