Download to read offline
Process Flow Diagram - Design & Standards.pptx
- 1. Process Flow DiagramFritz Adhinata Staf Process Engineer
- 2.
- 3.
- 4.
- 5. Process Diagram Block FlowDiagram 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 ProcessFlow 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 inProcess 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 StreamFlow 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 beIncluded in Process Flow Diagram • Essential Information 1. Stream composition, either the flow rate of each individual component or the stream composition as a weight fraction 2. Total stream flow rate 3. Stream temperature 4. Nominal operating pressure (the required operating pressure) 5. Stream enthalpy • Optional Information 1. Molar percentage composition and/or molar flow rate 2. Physical property data, mean values for the stream (such as density, viscosity, etc) 3. Stream name, a brief, one- or two- word description of the nature of the stream (for example “Acetone Column Bottoms”)
- 10. Reaksi Pembentukan Urea PemekatanUrea 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.
- 12.