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一下是帮助文件的内容
When Free Water is Yes or Dirty water, Aspen Plus handles the presence and decanting of water as a second liquid phase in water-hydrocarbon systems or other water-organic systems. For Free Water (Yes), the water phase is pure water. For Dirty water, the second liquid phase contains a trace amount of hydrocarbon. The global value can be overridden locally at the individual block or stream level.
You should also supply water decant streams wherever free water is to be decanted. Water-decant streams are entered on the graphical flowsheet along with other block outlet streams. In addition, you may select from among the available methods for calculating water solubility and free water phase properties on the Properties | Specifications | Global sheet. These global property specifications may also be overridden at the individual block level.
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