The Metal Parts Furnace (MPF) has proven to be a very robust furnace for the US Army incineration facilities that are destroying the US chemical stockpile. The MPF is a batch feed incinerator that contains a three zone primary furnace, a cross-over duct and an afterburner. Some of the ton containers containing mustard can only be partially drained due to the presence of a solid heel. If the remaining quantity of heel is too large, it cannot be processed in the MPF. Injection of hot water into the partially drained ton container dissolves a portion of the solid heel creating a heel/water rinsate (rinsate) that can then be transferred to an empty ton container (TC). The remaining solid heel in the original TC and the rinsate transferred to the empty TC are processed separately in the the MPF in their respective TCs. In this paper is described a numerical model for the MPF that can be used to estimate the performance of the MPF when processing ton containers holding rinsate. The model includes a time-dependent calculation for the heat transfer to the ton container, heat-up of the ton container metal walls and vaporization of the rinsate. The vaporization of the rinsate is computed with a multi-component distillation model. The predicted processing times are in agreement with plant data.
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