1 department of chemical engineering faculty of engineering, chulalongkorn university bangkok 10330,...
TRANSCRIPT
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Department of Chemical Engineering
Faculty of Engineering, Chulalongkorn University
Bangkok 10330, Thailand
Plantwide control structure design for an acid-catalyzed process to
produce biodiesel from used palm oil
Adviser : Dr. Soorathep Kheawhom
Presented by
Teerapan Rujirachun
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions
● Introduction
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions
● Theory
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Alcohol Vegetable oil
or Animal fat
Glycerol
Catalyst
Biodiesel
Transesterification
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Effect of Alkali-Catalyst
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions
● Biodiesel plant
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Biodiesel Production
Prepare waste cooking oil and other chemical
Transesterification
Separate Biodiesel from Glycerol
Catalyst Removal
Biodiesel Purification
Glycerine Purification
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions
● Steady State Simulation
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Biodiesel Production
Mixing Transesterification
Heat Exchanger
Recycle Methanol
Methanol Recovery
Acid Removal
CaO + H2SO4 ↔ CaSO4 + H2O
Water Washing
Glycerol Purification
Biodiesel Purification
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions
● Dynamic State Simulation
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Plantwide Control Procedure
Establish control objectives
Determine control degrees of freedom
Establish energy management system
Luyben &Tyreus 1998
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Plantwide Control Procedure
Establish energy management system
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Plantwide Control Procedure
Set production rate
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Plantwide Control Procedure
Set production rate
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Plantwide Control Procedure
Set production rate
Control product quality and handle safety, operational, and
environmental constraints
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Plantwide Control Procedure
Control product quality
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Plantwide Control Procedure
Set production rate
Control product quality and handle safety, operational, and
environmental constraints
Fix a flow in every recycle loop and control inventories
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Plantwide Control ProcedureFix a flow in every recycle
loop and control inventories
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Plantwide Control Procedure
Check component balances
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Plantwide Control Procedure
Check component balances
Used palm oilMethanol
Sulfuric acid
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Plantwide Control Procedure
Check component balances
Control individual unit operation
Optimize economic and
improve dynamic
controllability
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions ● Results and discussion
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Disturbance testThe control structure of
Biodiesel production process
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Disturbance test
Increase heat load disturbance of hot stream
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Disturbance test
Change in feedstock before inlet reactor
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Outline
● Introduction
● Theory
● Biodiesel plant
● Steady State Simulation
● Dynamic State Simulation
● Results and discussion
● Conclusions
● Conclusions
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Conclusions
• The control structure of this process can control purity of Biodiesel product greater than 99.65%wt. and glycerine by-product greater than 92%wt. (ASTM specifications)
• The control structure can control to achieve the control objective then change in load disturbance and change in feedstock before inlet reactor for transesterification.
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THANK YOU FOR
YOUR ATTENTION