Aspen/OLI Model of Waste Evaporation and Neutralization Process for MOX Waste Solidification Building

摘要

The Mixed Oxide Fuel Fabrication Facility (MOX or MFFF) at the Savannah River Site includes a Waste Solidification Building (WSB), which was built to house the process for converting aqueous wastes from the MFFF and the proposed Pit Disassembly and Conversion Facility (PDCF) into cements for long-term storage in either onsite repositories or at the Waste Isolation Pilot Plant (WIPP). The WSB process design required flowsheet modeling of the mixing tanks, batch evaporators, and neutralization tanks included in the WSB process. A steady state computer simulation was developed, using Aspen Plus~R to model the mixing tanks and evaporators and OLI~R to model the chemistry. The simulation is configured so that both inputs and outputs appear on a Microsoft Excel~R spreadsheet.