Abstract: The invention relates to a method of generating a signal for adjusting a parameter of a process for ethylene oxide production comprising the steps: Acquiring process data of a reactor producing ethylene oxide by means of sensors, Determining a parametric coefficient from the acquired process data, and Calculating the selectivity and/or activity of the catalyst from the parametric coefficient.

Abstract: The invention relates to a method of estimating a delay of a process data change with respect to a parameter change of a process of producing ethylene oxide in a reactor comprising the steps: Recording a history representing process data changes in connection with parameter changes of a real ethylene oxide reactor over time, Analyzing the history by means of an artificial neural network model regarding a delay of a first process data change with respect to a first parameter change and/or a delay of the first process data change with respect to a first and a second parameter change, Acquiring process data of a reactor producing ethylene oxide, Determining a future point in time based on the analysis and the acquired process data, when a change of a parameter of the running process will have a certain impact on the process property.

Abstract: The invention relates to a method of generating a signal for adjusting a parameter of a process for ethylene oxide production comprising the steps: Acquiring (100) process data of the process for ethylene oxide production, Predicting (200) a future value for the parameter based on the process data, Comparing (300) the future value to a predefined reference and based on a result of said comparison Generating (400) the signal for adjusting the parameter.