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1. (WO1999006451) CONTROL OF GAS PHASE POLYMERIZATION REACTIONS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1999/006451 International Application No.: PCT/US1998/015748
Publication Date: 11.02.1999 International Filing Date: 30.07.1998
Chapter 2 Demand Filed: 24.12.1998
IPC:
B01J 8/18 (2006.01) ,B01J 8/24 (2006.01) ,C08F 10/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
18
with fluidised particles
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
18
with fluidised particles
24
according to "fluidised-bed" technique
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
10
Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
Applicants: UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION[US/US]; 39 Old Ridgebury Road Danbury, CT 06817-0001, US
Inventors: KOCIAN, Harvey, Gene; US
REBHAN, David, Merrill; US
PARRISH, John, Roberts; US
PILGRAM, Thomas, Walter; US
Agent: WIGGINS, Karen, Johnson; Union Carbide Chemicals & Plastics Technology Corporation 39 Old Ridgebury Road Danbury, CT 06817-0001, US
HAYES, Adrian, Chetwynd; Boult Wade Tennant 27 Furnival Street London EC4A 1PQ, GB
Priority Data:
08/904,16431.07.1997US
Title (EN) CONTROL OF GAS PHASE POLYMERIZATION REACTIONS
(FR) COMMANDE DE REACTIONS DE POLYMERISATION EN PHASE GAZEUSE
Abstract:
(EN) The present invention teaches a process for controlling a continuous gas phase (exothermic) process operating in condensing mode (e.g. polymerization) with a selected temperature for the reactor bed or outlet and with a temperature differential between the reactor inlet and the reactor bed or outlet by controlling the heat transfer provided by the heat exchanger in the recycle line to maintain the selected reactor bed temperature or outlet temperature while simultaneously controlling a condensable liquid feed rate to maintain the temperature differential.
(FR) L'invention concerne la régulation d'un processus en phase gazeuse continue (exothermique) impliquant une condensation (p. ex. polymérisation), au moyen d'une température sélectionnée pour le lit ou la sortie du réacteur et d'un différentiel de température entre l'entrée du réacteur et le lit du réacteur. On régule le transfert de chaleur produit par l'échangeur de chaleur dans le conduit de recyclage de façon à maintenir la température sélectionnée du lit ou de la sortie du réacteur tout en réglant simultanément la vitesse d'alimentation du liquide condensable de manière à maintenir le différentiel de température.
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Designated States: ID, JP, KR
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)