COSIA
project update meeting
OLI and AQSim
March 2017
Think simulation!
Agenda
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Phase 1 review
• Summary of work
• Presentation of results to date
• Project wrap-up
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Phase 2 proposal
• Recap of current proposal
• Data needed from members
• Open questions / answers
Introductions
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Name
Company
Position in your company
COSIA / OLI work
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Objective
Understand and optimize the performance of lime
softening units for removing silica from produced
water through simulation
Method
• Phase 1: Improve silicate solubility in OLI calcs
• Phase 2: Assess impact of phenomena / kinetics
beyond solubility to improve simulation
• Phase 3:……………………..?
Phase 1 review
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Ca++, Mg++, Zn++, Al+++
silicate solubility predictions
OLI project team
• Andre Anderko
• Jerzy Kosinski
• Peiming Wang
Preliminary results
Project completion estimate
Phase 2 proposal
Beyond solubility
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Gain insight into the
overall silica removal process
• Pure-phase vs. solid-solution
precipitation
• Silica adsorption onto magnesium hydroxide
surfaces
• Solids inclusion within the magnesium hydroxide
lattice
• Reaction kinetics and mass transfer limits
• All of the above
Phase 2 questions
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How significant is each mechanism?
Where should kinetics and mass transfer be
applied?
What empirical data is available / needed?
What are successful and achievable
milestones in this research project?
Phase 2 approach
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Section 1: More data needed
• Collection and analysis of literature data
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Surface complexation
Mass transfer
Reaction kinetics
• Collection and analysis of plant data from
members
• Deliverable  phenomena versus kinetics
assessment with modeling recommendations
Phase 2 approach (continued)
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Section 2: laboratory data to plant data
• Quantitative analysis of lab data
• Determine how to fill the gap moving to plant data
• Deliverables
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Standardized coefficients applied to an equilibriumbased steady state simulation model.
Optimizer tool requirements to be used within an
existing simulator
Success depends on data!
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Empirical data available directly from COSIA
Empirical data available from members
particularly plant data
Reports from COSIA-funded or memberfunded researchers
Exhaustive literature search / data mining on
silicate chemistry (beyond thermodynamics)
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Surface complexation, mass transfer, reaction
kinetics
Q/A on Phase 2
Thanks for your attention!