Abstract:
The invention relates to a continuous method for separation of a mixture of hydrocarbons by extractive distillation having a mixture of a polar aprotic solvent and water as a selective solvent, in a system comprising an extractive distillation column and an outgas column, characterized in that the method is carried out under continuous measurement of the water content of the selective solvent via NIR spectroscopy, wherein the measured values from the continuous measurement of the water content of the selective solvent are compared to a specified target value and regulated to a value within a specified concentration range above and below the target value by addition or exfiltration of water or by addition of polar aprotic solvent.
Abstract:
The present invention relates to a communication system (140), to a monitoring system (110) for in-situ monitoring of at least one substance (112) used in a gas scrubbing process, wherein the monitoring system (110) comprises the communication system (140), as well as to related methods (310, 312). The monitoring system (110) can, via the communication system (140), be used for monitoring the at least one substance (112) and to provide treatment data for treating the at least one substance (112). Herein, the communication system (140) comprises a cloud server (144), a first server (146), at least one second server (148, 148'), and at least one third server (150, 150'); wherein the first server (146) further has a first communication interface (156) configured to provide reference spectral information referring to at least one reference sample and reference analytical data to the cloud server (144); wherein each second server (148, 148') has a second communication interface (158, 158') configured to provide spectral information related to at least one substance (112) to the cloud server (144); wherein the cloud server (144) is configured to - generate a calibration model by using the reference spectral information referring to the at least one reference sample and the reference analytical data provided by the first server (146), wherein the calibration model comprises at least one parameter; - apply the calibration model to the spectral information related to the at least one substance (112) provided by the second server (148, 148'), whereby at least one value for the at least one parameter is extracted; - provide the at least one value for the at least one parameter to the first server (146) via the first communication interface (156); wherein the first server (146) is further configured to determine treatment data by using the at least one value for the at least one parameter provided by the cloud server (144), wherein the treatment data comprise at least one piece of data which is related to a proposed treatment of the at least one substance (112); wherein the first server (146) further has at least one third communication interface (160, 160'), wherein each third communication interface (160, 160') is configured to provide the treatment data to the at least one third server (150, 150').
Abstract:
Un proceso para preparar polímeros de estireno expansible que comprende las etapas de: (a) adición de una fase acuosa que comprende un estabilizador de suspensiones y una fase orgánica que comprende estireno y un iniciador a un reactor, {b) comienzo de la adición de un agente de soplado en una conversión del estireno en el rango del 40 al 70% y adición del agente de soplado durante un período que va de 30 a 60 minutos, (c) adición de un estabilizador para estabilizar la distribución del tamaño de las perlas del polímero de estireno expansible en una conversión del estireno en el rango del 65 al 99%.