Use of an advanced multivariable controller to control alphabutol units
AssigneeAxens
InventorsJean-Marc BADER, Damien MAINTENANT
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Abstract
The present invention describes a control system for units for the production of 1-butene by the oligomerization of ethylene in the presence of a homogeneous catalyst, in the liquid phase and at the bubble point, which uses a multivariable predictive controller and provides the units with better stability.
Claims6
A advanced process control (APC) which can be applied to units for the oligomerization of ethylene to 1-butene, operated in the presence of a homogeneous catalyst in the liquid phase and at the bubble point, characterized in that the parameters which are simultaneously and continuously controlled, termed the target parameters, are the production of 1-butene (Dprod), the reactor pressure (Preac) and the reactor temperature (Treac), and the action variables are the feed flow rate (Dch), the flow rate of each of the components of the injected catalyst (T2 and LC) and the flow rate of cooling liquid which is supplied to the exchanger or exchangers of the catalyst recycling loop or loops.
Dependencies are inferred from the claim text.