CHAPTER 1 (Part III) - CHAPTER 1: Process Flow Diagram...

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1 CHAPTER 1: Process flow Diagram (PFD) & Block Diagram Prepared by: Ms. Nor Halaliza bt Alias Process Flow Diagram (PFD) s A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. s The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations. Another commonly-used term for a PFD is a flowsheet . Cont’… s Typical content of a process flow diagram of a single unit process will include the following: a) Process piping b) Major equipment items c) Control valve and other major valves d) Connections with other systems e) Major bypass and recirculation streams f) Operational data (temperature , pressure , mass flow rate , density , etc.), often by stream references to a mass balance . g) Process stream names Cont’… s Process flow diagrams generally do not include: a) Pipe classes or piping line numbers
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CHAPTER 1 (Part III) - CHAPTER 1: Process Flow Diagram...

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