The industrial state-of-the-art processes to extract tungsten from scheelite (CaWO4) require high pressures and temperatures. These flowsheets consume a large excess of chemicals (which are very hard recycle) generate up 25 tons high-salinity wastewater per ton ammonium paratungstate product. In this work, more sustainable conceptual flowsheet for the recovery high-grade (55.0 wt % W) medium-gr...

Three evaporators are used to reduce the volume of waste in the waste tank farm at the Savannah River Site (SRS). Evaporators are crucial operation in the SRS waste processing and management system. Using the Aspen Custom Modeler (ACM) software package marketed by Aspen Technology, Inc., the evaporator dynamic flowsheet models have been constructed to simulate the behavior of the evaporator sy...

The study's primary purpose is to simulate the adsorption and desorption of volatile organic components on activated carbon bed using python. model was verified with experiments for separation methane (55 mol %) - dioxide (45 mixture vacuum pressure swing an molecular sieve. For a six-component (methane, ethane, propane, butane, nitrogen), Aspen Adsorption flowsheet simulator experimental resul...

Coal preparation plant simulators are computer programs used to evaluate the performance of a preparation plant for given feed coal characteristics and the type of process flowsheet selected. However, none of the commercially available plant simulators attempts to maximize the overall plant yield for alternative flowsheets and also select the most suitable circuit configuration based on maximiz...

Input-output data sets are ubiquitous in chemical process engineering. We introduce a real-time interactive navigation framework that provides several capabilities to the decision maker (DM). Once surrogate model is trained DM can perform what-if analyses both input and output spaces by manipulating sliders. An approximated convex hull spanned space supports reliable prediction close set. The h...

In this paper we address the development of an MINLP optimization model for the synthesis of paraxylene separation processes based on crystallization technology. A superstructure is proposed that considers different alternative designs and operating conditions for the recovery of a high purity paraxylene product from a feed stream containing other xylene isomers and ethylbenzene. The goal is to...