Release June 2025

The latest version of the software are available to our customers now for download from the Support web site: access your Support area.

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PROSIMPLUS STANDARD 3.7.10

• Features have been added to unit operations in the “membranes” category. The modules concerned are membrane filters and membrane reactors.The resolution system has been improved for co-current and cross-flow configurations, which led to a significant reduction in convergence times.
  In addition, it is now possible to define permeances in molar, mass or volume basis in order to define the permeation flow through the membrane.It is also possible to define an hydraulic resistance according to the model chosen by the user.
• Regarding the calculation of the osmotic pressure, the previous model proposed 2 options: first, calculate the osmotic pressure using the thermodynamic model, or, with second option, supply a fixed osmotic pressure value.2 new options have been added: the user can choose to apply a Vant’Hoff law by defining rejection coefficients if necessary. The 2nd new option allows you to personalize the calculation by writing your own model using the VB script.
  It is now possible to make sizing : the user defines a filtration rate, also called a “stage cut” so that the tool calculates the membrane surface necessary to reach the specification.
• Still in the membranes category, the user can now define their own models in VB script for permeation flow, osmotic pressure, transfer coefficients or pressure drops.
  Templates are provided and the user can simply modify them to describe their personalized model.
• Rejection and concentration rates are now systematically calculated and presented in the module report.
  A new option makes it possible to define the permeability of a solvent and the rate of rejections of the solutes.
• The possibility of simulating pervaporation, that is to say vapor-liquid filtration is now possible. For this model, the calculation of the driving force is carried out using the thermodynamic model to obtain the activity coefficients of compounds.
• A new option allows you to take into account a complete energy balance of the membranes. Several options are available: first, you can define constant temperatures which is the only option available from the previous version.For energy balance, it is possible to define a thermal heat transfer coefficients between the 2 sides of the membrane and, or, define an amount of heat exchanged with an environment.This energy balance option is important for the simulation of membranes for pervaporation.
• Other features have been added in the Membranes category. For example, the number of reactions has been increased to 25 for reactive filters. A number of results and profiles have been added such as the VRF, volume reduction factor calculation, the concentration reduction rates or the recovery rate. In addition, the polarization effect is now calculated according to the flow regime: laminar or turbulent.Finally, new options have been added to define the temperature and possibly the pressure on the permeate side.
• A new option is available for linear segments in the pipe unit operation. In the case of two-phases flow, it is now possible to choose the model used to calculate the mean void ratio or to impose it. This parameter allows to calculate the mean density used in the calculation of gravity pressure drops. The homogeneous model (as in previous versions) is used by default. If the mean void ratio is specified, it is possible to vary it using the case study tool. Regardless of the model chosen, a profile shows the evolution of the mean void ratio along the pipe.
• In the heat exchanger rating module, now, if the diameter of one of the nozzles (inlet and/or outlet, shell side and/or tube side), the corresponding pressure drop is set equal to zero. The same applies to the corresponding rho*v^2 ratio.
• In the heat exchanger rating module, it is now possible to include or not the acceleration pressure drop in the total pressure drops.
• In the double pipe exchanger module, it is now possible to include or not the acceleration pressure drops in the total pressure drops.
• Regarding the constraints and recycles: the new version allows you to define scaling factors for the constraints and recycles SPEC module. These scaling factors are used for the inlet information streams, that is to say the deviations measured. These factors give more or less weight to one or more deviations.These scaling factors are particularly interesting when the measured values and so the deviations are not in the same order of magnitude in order to simply the simulation convergence.
• Regarding the thermodynamic cycles:
  The thermodynamic cycles are composed of the “heat pump”, “generalized heat pump” modules and “organic cycle of Rankine ORC”.These unit operations operate using a working fluid for the thermodynamic cycle.The available fluid database has been enlarged with new fluids.
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PROSIMPLUS HNO3 3.7.10

• A new profile is available after the convergence of the nitrous vapors condenser unit operation. This is the evolution of the oxidation degree along the heat exchanger length.
• In the “Results” tab, the length without condensation is also expressed as a percentage of the total length of the exchanger.
• A new option is available for linear segments in the pipe unit operation. In the case of two-phases flow, it is now possible to choose the model used to calculate the mean void ratio or to impose it. This parameter allows to calculate the mean density used in the calculation of gravity pressure drops. The homogeneous model (as in previous versions) is used by default. If the mean void ratio is specified, it is possible to vary it using the case study tool. Regardless of the model chosen, a profile shows the evolution of the mean void ratio along the pipe.
• Now, if the diameter of one of the nozzles (inlet and/or outlet, shell side and/or tube side), the corresponding pressure drop is set equal to zero. The same applies to the corresponding rho*v^2 ratio.
• In the heat exchanger rating module, it is now possible to include or not the acceleration pressure drop in the total pressure drops
• In the double pipe exchanger module, it is now possible to include or not the acceleration pressure drops in the total pressure drops.
• The new version allows you to define scaling factors for the constraints and recycles SPEC module.These scaling factors are used for the inlet information streams, that is to say the deviations measured. These factors give more or less weight to one or more deviations.These scaling factors are particularly interesting when the measured values and so the deviations are not in the same order of magnitude in order to simply the simulation convergence.
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BATCHCOLUMN 2.0.6

• The visual of the button for importing the compounds, selecting the thermodynamic profile and defining any chemical reactions has been harmonized with our other products (change from an orange vessel to a green vessel). The functionality remains the same and the user does not need to do anything when opening a file created with a previous version.
• A help button close to the reflux ratio allows you to access to its definition.
• Specifying a reflux flowrate is optional in BatchColumn. To set one, you must now check the box close to the button. In the specification window, a message reminds you that the condenser holdup is no longer constant in this case.
• The “vapor feed” has been renamed for clarity in a “heated vessel”.As a reminder:-it’s a buffer vessel, located outside the column; which is heated, and its vapors are sent to the column. The flow rate, the composition, the temperature and pressure of the coming-in gases are automatically calculated by BatchColumn from the initial conditions you described (double-click on the tank icon)-The parameters of this feed are defined independently of the operating steps: it is impossible to open or close this feed according to the step in progress, not even to modify its initial load. This feed will be considered either open or closed (according to the choice made) during all the simulation duration and, depending on the starting time and duration of the heating of the tank (i.e., until the lowest volume alarm or the highest temperature alarm is reached).-A double-click on the column allows to specify the feed stage.
• The echo of the data file is no longer present in the BatchColumn report. It can be added via the dedicated option in the report parameters.
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BATCHREACTOR 2.0.6

• The visual of the button for importing the compounds, selecting the thermodynamic profile and defining any chemical reactions has been harmonized with our other products (change from an orange vessel to a green vessel). The functionality remains the same and the user does not need to do anything when opening a file created with a previous version.
• For clarity, the “reflux rate” has been renamed “reflux fraction”. A help button close to the reflux fraction allows you to access its definition.
• In the case where a decanter is also present, for greater clarity, the “reflux rate” has been renamed “reflux fraction”. It is now specified that the reflux fraction is only used in the absence of liquid phase splitting. A help button close to the reflux fraction allows you to access to its definition.
• Three automatic events have been added:
  -Detection of the transition between natural and forced convection during the calculation, i.e., when the liquid level falls below (respectively rises above) the level of the stirring device.
  -Detection of a sudden change in heat exchange when the liquid level falls below (respectively rises above) the lowest turn of the immersed exchanger.
  -Detection when the liquid level falls below (respectively rises above) the bottom of the side jacket and there is none on the vessel bottom.
  They are visible in particular via the events monitoring of the monitoring window.

• The echo of the data file is no longer present in the BatchReactor report. It can be added via the dedicated option in the report parameters.
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ProSec 3.7.10

• For harmonization with non-reactive versions, the pressure drop of the nozzles is no longer distributed over the length of the first elementary zone of a distributor. It is now applied to the first mesh of an incoming distributor and to the last mesh of an outgoing distributor.
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ProSim DAC 3.7.10

• The calculation of the wall heating cost during the preheating has been added in the financial results of the regeneration steps.
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