Linde Aktiengesellschaft

Linde Gmbh

Bernd Wunderlich

Tobias Lautenschlager

Christoph Windmeier

Ingo Thomas

Martin Pottmann

Florian Schliebitz

Anna Ecker

The present invention relates to a computer-implemented method for performing a chemical engineering process, in particular in an air separation plant or a natural gas plant, wherein a multiplicity of process simulations are performed simultaneously, in the course of each of which the process in the process plant is in each case simulated for a particular application case, wherein each application case is characterized by values of process plant variables and/or values of process parameters, wherein, in the multiplicity of process simulations, values for the process plant variables and/or for the process parameters are determined such that at least one predefined condition is met, wherein free values for process plant variables and/or process parameters are determined, and wherein dependent values for process plant variables and/or process parameters are determined from the free values for process plant variables and/or process parameters.

Computer-implemented method for sizing a process plant

A method is provided for determining a state of a distillation column having multiple column stages for separating a feed fluid stream into individual fluid components. The state is determined by means of a model in a manner dependent on pressure differences prevailing between adjacent column stages. In the model, both gaseous and liquid flows between adjacent column stages are brought about by the pressure differences prevailing between adjacent column stages. A substance quantity flow characterizing gaseous flow between two column stages is given by {dot over (N)}&#xb7;R=C&#xb7;&#x394;p. A substance quantity flow characterizing liquid flow between two column stages is given by {dot over (N)}&#xb7;R=C&#xb7;&#x394;p. &#x394;pis a total pressure difference between two adjacent column stages. Ris a coefficient of resistance between two adjacent column stages and Cis a conductance value of flow between two adjacent column stages.

Modelling of a distillation column with operating state changes

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Starnberg, Germany

Bernd Wunderlich