Over the years we have encountered operators and supervisors who knew how their recovery system functioned and how to respond if they received an alarm signal on their system control panel, however these same folks did not understand the basic single stage distillation concept or what to do if something changed in the makeup of their process waste solvent feed-stock. This may be old hat to some of you but please bear with us and we cover these basics. This post will lay a foundation for future entries into answering these questions.
Once the non-volatile portion is build up to concentrated levels, the “still bottoms” are discharged. Another production run can then be initiated. Below is a basic illustration of the process.