Design Process

Design Process - The Design Process Objectives Understand...

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Copyright 2003 John Baldwin 1 ChEn 425 – Design Process – Slide 1 The Design Process Objectives Understand the kinds of design decisions that process design teams face Appreciate the key steps for process design Be aware of the kinds of environmental issues and safety issues that are prevalent Appreciate the importance of ethics during design Appreciate the place of the various approaches toward process calculations ChEn 425 – Design Process – Slide 2 Design Opportunities Starting Point: § Societal need § Potential to generate profit Thousands of products exist (3M Company has developed over 50,000 products since its founding in 1904) Classifications of chemical products § Basic chemical products (from natural resources) § Industrial products (from basic chemical products) § Consumer products (from basic and industrial products) Origins of design projects § Result of research § Changing economics (e.g., a new inexpensive raw material) § Discovery of new markets § Result of engineers having strong feelings of new chemical or route to improve profitability to produce an existing chemical or that a market exists for a new product
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Copyright 2003 John Baldwin 2 ChEn 425 – Design Process – Slide 3 The Design Process (Summary) ChEn 425 – Design Process – Slide 4 Typical Process Development Team Chemist and/or biochemist Chemical engineering technology specialists (as needed): § Reaction kinetics § Thermophysical properties § Separations § Materials transfer Industrial consultant(s) (as needed) Marketing person (as needed) Chemical process engineer (you)
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Copyright 2003 John Baldwin 3 ChEn 425 – Design Process – Slide 5 Typical Organization of a Process Design Project Project Manager (and assistant) Civil (site prep, structures, buildings) Utilities Furnaces Layout Rotating equipment (Pumps, compressors, turbines) Electrical Control and instruments Piping Vessels Specialist design sections Process Section Process evaluation Flow sheeting Equipment Specifications Construction Section Construction Start-up Procurement Section Estimating Inspection Scheduling ChEn 425 – Design Process – Slide 6 Evolution of Principal Flow Diagrams During Process Design Input – Output Diagram Generic Block Flow Diagram Basic Reaction Stoichiometry Preliminary Process Conditions Process Development Block Flow Diagram (BFD) Process Flow Diagram (PFD) Preliminary Material Balance Material and Energy Balances Conceptual Process Design Mechanical and Instrumentation Information Detailed Process Design
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Copyright 2003 John Baldwin 4 ChEn 425 – Design Process – Slide 7 Project Documentation General Correspondence within the design group and with: § Government departments § Equipment vendors
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This note was uploaded on 03/26/2008 for the course CHEN 425 taught by Professor Johnbaldwin during the Fall '03 term at Texas A&M.

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Design Process - The Design Process Objectives Understand...

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