Process Flow Diagram - Design & Standards.pptx

How to build process flow diagram

1. Process Flow Diagram Fritz Adhinata Staf Process Engineer

2. Block Flow Diagram

3. Process Flow Diagram

4. Piping & Instrument Diagram

5. Process Diagram Block Flow Diagram Schematic Illustration of Major Process Each block represent one or more unit operation in the same scope of process Sequence process flow from left to right (feed to product) Process Flow Diagram Schematic Illustration of a System Depicts all the main unit operations connected by the process line Include process control (control valve, control loop & main instruments) Each process line has at least an indication of temperature, pressure, composition, flow rate (can be tabled separately) Piping & Instrument Diagram Schematic Illustration of Functional Relationship between Piping & Instrumentation A more detailed depiction of the process flow diagram including all lines (utilities, reducers, valves), necessary instrumentation & control interlock that required by operational for monitoring & control

6. Pictorial Representation in Process Flow Diagram On the detailed flowsheets used for design & operation, the equipment is normally drawn in a stylized pictorial form There are several international standards for PFD symbols ISO 10628 is the international standard for PFD drawing symbols British Standard (BS 1553 1997) : “Graphical Symbols for General Engineering Part 1 Piping System & Plant” are more typical of those in common use For special equipment, some licensor uses their own symbols ISO 10628 BS 1553

7. Equipment Code Letter in Process Flow Diagram Equipment code letter & number shall be assigned to process equipment Usually company/licensor have their own equipment numbering systems ISO 10628 & IPS-E-PR-308 are some standards for equipment numbering system Example of Equipment Numbering Systems ISO 10628 IPS-E-PR-308

8. Presentation of Stream Flow Rates in Process Flow Diagram The data on the flow rate of each individual component, on the total stream flow rate, and the percentage composition can be shown on the flowsheet in various ways The simplest method, suitable for simple process with few pieces of equipment, is to tabulate the data in blocks alongside the process stream lines A better method for the presentation of data : each stream line is numbered and the data are tabulated at the bottom of the sheet

9. Information to be Included in Process Flow Diagram Essential Information Stream composition, either the flow rate of each individual component or the stream composition as a weight fraction Total stream flow rate Stream temperature Nominal operating pressure (the required operating pressure) Stream enthalpy Optional Information Molar percentage composition and/or molar flow rate Physical property data, mean values for the stream (such as density, viscosity, etc ) Stream name, a brief, one- or two- word description of the nature of the stream (for example “Acetone Column Bottoms”)

10. Reaksi Pembentukan Urea Pemekatan Urea Solution Pemurnian Urea dan Dekomposisi Karbamat PABRIK UREA Pemurnian Air Proses dengan Pemisahan Gas Reaktan Pembentukan Urea Prill / Granul Pembentukan Karbamat dan Recycle Reaktan GRANULATION RECOVERY PURIFCATION CONCENTRATION WWT SYNTHESIS

11. Urea PFD Purification Section

12. Thank You