Fluidized bed method and reactor for the treatment of catalysts and catalyst carriers

• US 20070207068A1
• Filed: 05/08/2007
• Published: 09/06/2007
• Est. Priority Date: 10/15/1998
• Status: Abandoned Application

• Current Assignee: Hans Siebenhandl, Hendrik Schonfelder, Joachim Werther, Kaspar Evertz, Michael Kammerer, Paulus Lange, Stefan Wietfeldt-Haltenhoff
• Original Assignee: Hans Siebenhandl, Hendrik Schonfelder, Joachim Werther, Kaspar Evertz, Michael Kammerer, Paulus Lange, Stefan Wietfeldt-Haltenhoff
• Inventors: Evertz, Kaspar, Werther, Joachim, Lange, Paulus, Siebenhandl, Hans, Kammerer, Michael, Wietfeldt-Haltenhoff, Stefan, Schonfelder, Hendrik
• Application Number:
  US11/797,795
• Publication Number:
  US 20070207068A1
• Time in Patent Office: Days
• US Class Current: 422/139
• CPC Class Codes: B01J 2219/1946 conical
• CPC Class Codes: B01J 8/003 in a downward flow
• CPC Class Codes: B01J 8/0055 using cyclones
• CPC Class Codes: B01J 8/006 by filtration
• CPC Class Codes: B01J 8/1809 Controlling processes
• CPC Class Codes: B01J 8/1854 followed by a downward movement inside the reactor to form a loop
• CPC Class Codes: B01J 8/1872 Details of the fluidised bed reactor B01J8/1836 takes precedence
• CPC Class Codes: Y10S 526/901 Monomer polymerized in vapor state in presence of transition metal containing catalyst

Abstract

A method for the treatment of catalysts or catalyst carriers by: a) introducing and distributing a gas in the lower section of a reactor containing a catalyst or catalyst carrier bulk material; b) forming a fluidized bed in the reactor; c) treating the particles in the fluidized bed while removing the fine particles an/or retaining the course particles by means of a separating organ and d) discharging the reactor. To this end, a reactor bottom which tapers downwards is used.

Claims

1-5. -5. (canceled)

6. A reactor comprising the following devices:

i) a reactor jacket comprising a reactor bottom which tapers downwards,

ii) a pipe for introducing gas into the reactor located beneath the reactor bottom and connected to a gas inlet pipe for gas introduction,

iii) a device for discharging the reactor located beneath the reactor bottom, and

iv) a separator.

7. A reactor as claimed in claim 6, wherein the reactor bottom is conical.

8. A reactor as claimed in claim 7, wherein the conical reactor bottom has a cone angle α

, measured between the two internal jacket surfaces, of 10°

to 120°

.

9. A reactor as claimed in claim 6, wherein an angle β

measured between a gas inlet pipe of the gas inlet and the upward verticals is 20°

to 70°

.

10. A reactor as claimed in claim 6, wherein the separator is a cyclone.

12. A reactor as claimed in claim 8, wherein said cone angle α

is 30°

to 80°

.

13. A reactor as claimed in claim 9, wherein said angle β

is 30°

to 60°

.

11. (canceled)