The object of this step is to identify all the mass and energy flow-paths in the process by decomposing the process into open- and closed- paths for each compound. The closed-paths (CP) represent process recycles from which specific amounts of materials (chemicals) and energy do not leave the process. In other words, they are the flow paths, which start and end in the same unit of the process. An open-path (OP) represents a path for material and energy with an entry- point to the process and an exit-point from the process. The entrance of the compound a Es hb a, a
Equipment flowsheet into operational flowdiagram
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