Process for automatically controlling the conversion distribution in reactor series operating with continuous flow

Abstract

The conversion distribution of a polymerization reaction (e.g of butadiene, v.i.) taking place in at least two cooled reactors in series operating with continuous flow is controlled by (a) determining the rate of dissipation of heat from at least the first two reactors in the series, (b) computing therefrom either pneumatically or by electrical analogue the heats of reaction or conversion rates in said reactors, (c) applying a signal determined by the heat of reaction or conversion rate in the first reactor to control the flow of catalyst to said reactor so as to provide the desired conversion rate therein irrespective of temperature changes therein and (d) applying a signal determined by the heat of reaction or conversion rate in the second or following reactors to control the first reactor or the reactor preceding said following reactors so that sufficient catalyst reaches the second or following reactors to provide the intended conversion rate therein. The process is illustrated in connection with butadiene polymerization in a series of five reactors using a benzene solution of 1:3-butadiene with a diethylaluminium monochloride/cobalt salt Ziegler catalyst formed in situ, the first two reactors being controlled as above defined, the cobalt salt being separately introduced and regarded in this case as the "catalyst".

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (1)

    Publication numberPublication dateAssigneeTitle
    RU-2457899-C1August 10, 2012Государственное образовательное учреждение высшего профессионального образования "Московский государственный университет инженерной экологии"Automatic control over starting high-pressure polymerisation continuous-operation reactor