Abstract: The present invention relates to a process for thermally separating a mixture comprising a first main component and a second main component, where the boiling point of the first main component is lower than the boiling point of the second main components. The invention further relates to a system for thermal separation comprising a computer for control of the thermal separation which is set up to control the process of the invention. By means of predetermined thermodynamic models, pressure and temperature data are used to ascertain the proportions of first and second main component in bottom product streams.

Abstract: The invention relates to a method for monitoring at least two redundant sensors, which are in particular arranged in a chemical plant or an aircraft, comprising providing a first sensor signal of a first sensor, the first sensor signal comprising at least one measured value, providing at least one further sensor signal from a further sensor, the further sensor signal comprising at least one further measured value, generating a first analysis signal from the first sensor signal, generating at least one further analysis signal from the further sensor signal, determining at least one relationship between the first sensor signal and the further sensor signal at least in dependence on the first analysis signal and the further analysis signal over a time horizon, comparing the relationship with at least one admissible range, and, depending on the result of the comparison, determining whether at least one sensor of the two redundant sensors is faulty.

Abstract: The invention relates to a method for monitoring at least two redundant sensors, which are in particular arranged in a chemical plant or an aircraft, comprising providing a first sensor signal of a first sensor, the first sensor signal comprising at least one measured value, providing at least one further sensor signal from a further sensor, the further sensor signal comprising at least one further measured value, generating a first analysis signal from the first sensor signal, generating at least one further analysis signal from the further sensor signal, determining at least one relationship between the first sensor signal and the further sensor signal at least in dependence on the first analysis signal and the further analysis signal over a time horizon, comparing the relationship with at least one admissible range, and, depending on the result of the comparison, determining whether at least one sensor of the two redundant sensors is faulty.

Abstract: The present invention relates to a method of controlling a concentration of a first component of a rectification column for separating a binary mixture of the first component with a second component on the basis of temperature measurements, wherein a control path defined by temperature sensors (T3, T2, T6) arranged in the longitudinal direction of the column is linearized with the aid of an estimated temperature profile, wherein a real temperature profile T*(h), determined by means of the temperature sensors, is approximated by a function T(h) in dependence on a column height h, wherein the column id divided into two sections along the column height h and the function T(h) is defined section by section on the basis, in each case, of a logistical function.

Abstract: The present invention relates to a process for thermally separating a mixture comprising a first main component and a second main component, where the boiling point of the first main component is lower than the boiling point of the second main components. The invention further relates to a system for thermal separation comprising a computer for control of the thermal separation which is set up to control the process of the invention. By means of predetermined thermodynamic models, pressure and temperature data are used to ascertain the proportions of first and second main component in bottom product streams.

Abstract: A method for controlling a technical process with a controller that generates a correcting variable, where a controlled variable approximately constitutes or forms a step function as a function of the correcting variable, in which in a first section of a value range of the correcting variable, the controlled variable forms a first plateau with values that are virtually the same, in a second section of the value range of the correcting variable, the controlled variable has a steep transition from the first plateau to a second plateau with values that are likewise virtually the same, and in a third section of the value range of the correcting variable, the controlled variable forms the second plateau. According to this invention, the step function is approximated by an approximation function in the form of a sigmoid function. An inverse function is produced for the approximation function.

Abstract: A method operates a production plant, the method having process modules, wherein, for each process module, the amount of material that is respectively present in this process module and is to be processed by this process module is continuously or discretely detected and compared with a prescribed limit value for the amount, wherein a mass inflow into the respective process module is increased or decreased if the amount of material that is respectively present in this process module and is to be processed by this process module is less than or greater than the limit value for the amount, or a mass outflow from the respective process module is increased or decreased if the amount of material that is respectively present in this process module and is to be processed by this process module is greater than or less than the limit value for the amount.

Abstract: The present invention relates to a method of controlling a concentration of a first component of a rectification column for separating a binary mixture of the first component with a second component on the basis of temperature measurements, wherein a control path defined by temperature sensors (T3, T2, T6) arranged in the longitudinal direction of the column is linearized with the aid of an estimated temperature profile, wherein a real temperature profile T*(h), determined by means of the temperature sensors, is approximated by a function T(h) in dependence on a column height h, wherein the column id divided into two sections along the column height h and the function T(h) is defined section by section on the basis, in each case, of a logistical function.

Abstract: The invention relates to a neutralization plant (100) comprising at least one reaction chamber (102) having a first feed (114) for an acid-containing product and at least one further feed (116) for a base-containing product, wherein at least one of the feeds (114, 116) comprises at least one valve means (118, 120) for controlling the inflow amount into the reaction chamber (102), wherein the ion controller apparatus (104, 204, 205) comprises at least one evaluation device (106, 206) set up for determining at least one actual ion concentration based on an actual pH of the mixture (122) present in the reaction chamber (102) and wherein the ion controller apparatus (104, 204) comprises at least one ion controller device (108, 208) comprising at least one ion controller (110, 210.1, 210.2, 211) set up for controlling the valve means (118, 120) according to the actual ion concentration and a target ion concentration.

Abstract: The invention relates to a method for monitoring at least two redundant sensors, which are in particular arranged in a chemical plant or an aircraft, comprising providing a first sensor signal of a first sensor, the first sensor signal comprising at least one measured value, providing at least one further sensor signal from a further sensor, the further sensor signal comprising at least one further measured value, generating a first analysis signal from the first sensor signal, generating at least one further analysis signal from the further sensor signal, determining at least one relationship between the first sensor signal and the further sensor signal at least in dependence on the first analysis signal and the further analysis signal over a time horizon, comparing the relationship with at least one admissible range, and, depending on the result of the comparison, determining whether at least one sensor of the two redundant sensors is faulty.

Abstract: The invention relates to a neutralization plant (100) comprising at least one reaction chamber (102) having a first feed (114) for an acid-containing product and at least one further feed (116) for a base-containing product, wherein at least one of the feeds (114, 116) comprises at least one valve means (118, 120) for controlling the inflow amount into the reaction chamber (102), wherein the ion controller apparatus (104, 204, 205) comprises at least one evaluation device (106, 206) set up for determining at least one actual ion concentration based on an actual pH of the mixture (122) present in the reaction chamber (102) and wherein the ion controller apparatus (104, 204) comprises at least one ion controller device (108, 208) comprising at least one ion controller (110, 210.1, 210.2, 211) set up for controlling the valve means (118, 120) according to the actual ion concentration and a target ion concentration.

Abstract: A method for controlling a technical process with a controller that generates a correcting variable, where a controlled variable approximately constitutes or forms a step function as a function of the correcting variable, in which in a first section of a value range of the correcting variable, the controlled variable forms a first plateau with values that are virtually the same, in a second section of the value range of the correcting variable, the controlled variable has a steep transition from the first plateau to a second plateau with values that are likewise virtually the same, and in a third section of the value range of the correcting variable, the controlled variable forms the second plateau. According to this invention, the step function is approximated by an approximation function in the form of a sigmoid function. An inverse function is produced for the approximation function.

Abstract: A method operates a production plant, the method having process modules, wherein, for each process module, the amount of material that is respectively present in this process module and is to be processed by this process module is continuously or discretely detected and compared with a prescribed limit value for the amount, wherein a mass inflow into the respective process module is increased or decreased if the amount of material that is respectively present in this process module and is to be processed by this process module is less than or greater than the limit value for the amount, or a mass outflow from the respective process module is increased or decreased if the amount of material that is respectively present in this process module and is to be processed by this process module is greater than or less than the limit value for the amount.