process integration gothenburg – 20 years later march … · process integration gothenburg –...
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Process Integration Gothenburg – 20 Years Later
March 2013
Historical Overview of Early Development Bodo Linnhoff
formerly ICI, UMIST, Linnhoff March
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It all started in the 1970s........
Looking back 40 years......
1970s
• Computers – only for number crunching
• No Word Processors – Typewriters !!
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Looking back – 1970s
Use of Targets in Industry
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Industry – 1970s
Example BP:
Setting Targets was Standard Practice
Using
‘Boston Learning Curves’
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Boston Experience Curves (ref wikipedia)
eg, expect 20% improvement when doubling production
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Industry – 1970s
Boston Learning Curves:
• Based on past performance
• No concept of ‘Best Possible’
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Looking back – 1970s
Process Design in Industry
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Process Design
How was it done in the 1970s?
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Example ICI
Corporate Laboratory
Simulation Tools
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Process Design in the late 1970s *)
Engineers Used Simulation Tools
*) imagine punched cards in the early 1970s
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A Trial - and - Error Loop ?
Simulati
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Industry – 1970s
Process Design:
• Trial - and - Error !!
• Not much by way of ‘Method’
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The Idea of
Process Synthesis
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Invention of Flowsheet
Process Flowsheet & Simulation Input Data
Processing Task
Simulation
Ultimate Goal: we only need one Simulation
Finish
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University Research – 1970s
Process Synthesis • Branch-and-Bound, Monte Carlo • LP, NLP, etc
• Artificial Intelligence (IBM ‘Deep Thought’...)
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University Research – 1970s
Process Synthesis Research:
Computers could play the game......
ie design simple flowsheets
......but they couldn’t hope to win!
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Reaction from Industry – 1970s
What’s more important?
Clever Algorithm?
Or Better Flowsheet?
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Response from Researchers
Give us a chance!
....and a faster computer?
Reference: IBM and Computers for Chess
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Special Interest
Heat Exchanger Networks
or
HEN Design
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HEN Design
Library of standard problems
Name of the game:
My (big) computer found a better solution
than your (big) computer !!
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A Different Approach
Ponton and Donalson, 1974
• HEN Design • Match hottest cold stream with hottest
hot stream, etc • ....same again, etc
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Ponton and Donaldson (1974)
A simple rule that’s worth knowing
Easy to see how an engineer
would use this
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It Just Fits In
Simulation
Assess
Like it?
Finish
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Linnhoff & Flower, AIChE Journal (1978)
• Targets before Design
• Zero Pinch *) Heatflow
• Use of Driving Forces
• Interactive Approach
*) was not called ‘Pinch’ yet
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Pinch Technology – 1978
Grid DiagramGrid Diagram
Grid Diagram - helped with the interaction
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Pinch Technology – 1978
All ‘standard’ literature problems:
(with a hand calculator)
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Next: Try it out in Industry
It had seemed too easy......
Reality:
Control, Safety, Corrosion, Materials of Construction,
Design Types, Fouling, Foundations, Piping, Retrofit .....
??
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Six Months Later
ICI Petrochemicals
HEN Design (Student) Project
(ref David Boland)
Real Project: Improvement!!!
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Key Point
Simulation
Assess
Like it?
Finish
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next step
ICI Corporate Laboratory:
IPDG
INTEGRATED PROCESS DESIGN GROUP
had a ‘Process Synthesis’ project
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ICI – 1978 to 1982
Process Synthesis Team:
I Wardle, D Mason, J Turner, E Hindmarsh, H Dunford, W Townsend, R Smith
• R&D (eg Pinch Design Method, Appropriate Placement)
• More Publications
• Projects
• Training Course Development
• etc
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Links with Academic Researchers
ICI invited:
Ed Hohmann, Rudi Motard, Art Westerberg,
George Stephanopoulos, Jim Douglas, Manfred
Morari, Jeff Siirola, Jack Ponton,
and others
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Acknowledgement Ray Day
Ray Day was the boss everybody wants: Vision and Support
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Ray Day’s programme
• Training Course with Engineers from Six Divisions
• Six Projects – All Successful
• Second Training Course, Based on Projects
• Further Projects
• Two Years Later:
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Projects
The Reality of Project Work
• Data uncertain
• Operating cases uncertain
• Comfort zones (eg technologies)
• Utilities (eg step change costs)
• Infrastructure (tankage, piping, foundations, shared systems)
• etc
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Always a Key Point
Simulation
Assess
Like it?
Finish
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A Pattern was Emerging
• Two or three key ideas
• 80% of design unchanged
• Practical constraints respected
• Energy cost savings 20% and more
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The Biggest Surprise
• Capital energy costs reduced
• Cheaper to build & cheaper to run
• Contradicted the assumption of trade-off
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ICI in 1982 – The Good News
It Works!!
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ICI in 1982 – The Bad News
Therefore:
Let‘s stop publishing
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The World in 1982........
ICI: it works (but we stop telling)
A famous Professor: You are costing us 10 years!
Process Design people: who builds the plant?
Others: Keep going!
......friends and foes
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Resistance to Innovation: A Case Study
y: One Third of Ships Lost Astronomy or Clock Makers? Solution Found 30 Years Resistance • Partiality • Sabotage
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UMIST – 1982 onwards
• Research and Software
• Training Courses • Links to industry: Research Consortium
• Links to projects: Linnhoff March
• Publications (refereed and ‘glossy‘)
UMIST today: wait for Robin Smith
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Research Consortium (1983) First Six:
• Shell • Exxon • BP • BASF • Norsk Hydro • Union Carbide First Consortium of its Kind?
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by the way.......BP (1982)
BP had replaced Boston Experience Curves
with .....
.....with sensational results:
Potential found in mature processes
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by the way.......BASF (1983)
BASF Leverkusen: no third power station
Energy key to debottlenecking of site
100 processes – 20% reduction
Published seven years later
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Research – 1983 to 1990s
• HEN Capital Cost • Heat & Power – Multiple Utilities • Distillation – Process Onion • Retrofit Targets • Shaft Work targets (low T) • Constraints • Control • Total site • Water • etc
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Terminology – 1983 to 1990s
• HEN Design
• Heat Integration
• Heat & Power Integration
•Process Integration
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Testimonials – Early 1980s and on
• Union Carbide (1983) • Shell (1984) • Procter & Gamble (1985) • BP (1987) • Exxon (1989) • BASF (1990) • Mitsubishi (1992) • etc.
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Government Agencies, Legislation – 1990s
• Gothenburg 1992 • Washington 1994 (Hazel O‘Leary) • Amoco – EPA – LM Project 1994 (USA) • IEA Implementing Agreement • UBA (Germany) • MITI (Japan) • Wärmenutzungsverordnung (Germany) • etc.
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1990s to 2013
I now refer to other people
Many people here today have been here in 1992 also?
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Reflection: we are 40 years on, really
But allow me a question:
If we award 100% for ‘on target‘ Process Design
each and every time in industry....
....then, where are we?
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Good bye
Thank you for your attention
See you in 2034 ?
Bodo Linnhoff Ticino 2013