Global Patent Index - EP 1242344 A1

EP 1242344 A1 2002-09-25 - DEHYDROGENATION OF AN ALKYL AROMATIC COMPOUND AND CATALYST REGENERATION IN A FLUIDIZED BED REACTOR

Title (en)

DEHYDROGENATION OF AN ALKYL AROMATIC COMPOUND AND CATALYST REGENERATION IN A FLUIDIZED BED REACTOR

Title (de)

DEHYDIERUNG EINER ALKYLAROMATISCHEN VERBINDUNG UND KATALYSATORREGENERIERUNG IN EINEM FLIESSBETTREAKTOR

Title (fr)

DESHYDROGENATION D'UN COMPOSE AROMATIQUE ALKYLE ET REGENERATION DE CATALYSEUR DANS UN REACTEUR A LIT FLUIDISE

Publication

EP 1242344 A1 (EN)

Application

EP 00986507 A

Priority

  • US 0034305 W
  • US 17227499 P

Abstract (en)

[origin: WO0144146A1] A process of preparing a vinyl aromatic compound, such as styrene. The process involves fluidizing a dehydrogenation catalyst in a single shell fluidized bed reactor containing a reaction zone and a regeneration zone; contacting an alkyl aromatic compound, such as ethylbenzene, with the dehydrogenation catalyst in the dehydrogenation zone so as to produce the vinyl aromatic compound, such as styrene; and regenerating the catalyst <i>in situ</i> by contacting steam with the deactivated catalyst in the regeneration zone. A fluidized bed reactor is described, characterized by a freeboard zone, a reaction zone, and a catalyst regeneration zone, all within a single shell.

IPC 1-7 (main, further and additional classification)

C07C 5/333; B01J 8/28

IPC 8 full level (invention and additional information)

B01J 8/00 (2006.01); B01J 8/18 (2006.01); B01J 8/28 (2006.01); C07B 61/00 (2006.01); C07C 5/333 (2006.01); C07C 15/44 (2006.01); C07C 15/46 (2006.01)

CPC (invention and additional information)

B01J 8/28 (2013.01); B01J 8/0055 (2013.01); B01J 8/1818 (2013.01); B01J 8/1854 (2013.01); C07C 5/3332 (2013.01); C07C 2523/745 (2013.01); Y02P 20/582 (2015.11); Y02P 20/584 (2015.11)

Combination set (CPC)

C07C 5/3332 + C07C 15/44

Citation (search report)

See references of WO 0144146A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0144146 A1 20010621; AR 026963 A1 20030305; AU 2273401 A 20010625; BR 0016762 A 20020903; CA 2396486 A1 20010621; CN 1204095 C 20050601; CN 1409695 A 20030409; EG 22595 A 20030430; EP 1242344 A1 20020925; JP 2003517027 A 20030520; MX PA02005987 A 20040812; RU 2002119004 A 20040110; RU 2234491 C2 20040820; TR 200201581 T2 20021021; ZA 200204070 B 20030522

INPADOC legal status


2006-06-07 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20051124

2003-04-09 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: DOW GLOBAL TECHNOLOGIES INC.

2003-01-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021125

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020717

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI