Harvey G Kocian

US Patent:

6063877, May 16, 2000

Filed:

Jul 31, 1997

Appl. No.:

8/904164

Inventors:

Harvey Gene Kocian - Victoria TX
David Merrill Rebhan - Alum Creek WV
John Roberts Parrish - Cross Lanes WV
Thomas Walter Pilgram - Port Lavaca TX

Assignee:

Union Carbide Chemicals & Plastics Technology Corporation - Danbury CT

International Classification:

C08F 234

US Classification:

526 61

Abstract:

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.