Tugas 3.docx

1. Process diagrams vs Process flow diagrams a. Process Diagrams They are simple representations of the process with no technical details. Their aim is diverse, from publicity and advertising to providing a technical sketch.  Block flow diagrams. They consist of a number of boxes representing each of the units or groups of units. The boxes are connected through arrows. SeeFig. 2.6.

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Block flow process diagram. It is used for simple representation of the entire process. Typically all the units of the process are represented and linked by arrows, indicating the direction of the flow. Some major operating conditions are added to highlight them. It is the basis for the engineering process diagrams. SeeFig. 2.7.

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Graphic process diagram. It is widely used in publicity or to sell the project to managers. It is free, and they are not standardized. SeeFig. 2.8.

 Sankey diagram: It shows the flow of energy or mass involved in the process, typically as a whole. It allows identifying energy losses. SeeFig. 2.9

b. Process Flow Diagram Process flow diagrams. They are the major source of information regarding a process, from the stream data to equipment sizing. The symbols that are used for the units and the way of reporting information on the operating conditions are standarized. Anyone in the field can interpret the diagram (seeFig. 2.10).

2. Process flow diagram (PFD) vs Block Flow Diagram (BFD)? a. Process flow diagram Process flow diagrams. They are the major source of information regarding a process, from the stream data to equipment sizing. The symbols that are used for the units and the way of reporting information on the operating conditions are standarized. Anyone in the field can interpret the diagram (seeFig. 2.10). b. Block flow diagrams. They consist of a number of boxes representing each of the units or groups of units. The boxes are connected through arrows. SeeFig. 2.6. 3. P&ID ? Piping and instrument (P&ID) diagrams emphasize two major characteristics. They do not show operating conditions or compositions or flow quantities, but they do show all major as well as minor equipment more realistically than on the process flowsheet. A special type of engineering process diagram is the so-called Piping and Instrumentation Diagram. It includes everything from the size of the pipes and their material to the controllers and measuring devices needed for controlling the operation of the facility (seeFig. 2.11).

4. Flowsheet Equipment Symbols?