16 DRose Antiscalant use Suncor

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Antiscalant Use at Suncor Energy Inc.Oil Sands Process Water WorkshopFort McMurray, AlbertaMay 7 & 8, 2001David Rose, BetzDearbornBill Rideout, Suncor Energy Inc.: 

Antiscalant Use at Suncor Energy Inc. Oil Sands Process Water Workshop Fort McMurray, Alberta May 7 andamp; 8, 2001 David Rose, BetzDearborn Bill Rideout, Suncor Energy Inc.

Introduction: 

Introduction Plant Layout Operating History Water Quality Issues Startup Logistics Monitoring Performance Summary

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Operating History: 

Operating History 50# steam used to heat PEW to 200o F at Plant 3 (3E1 a-f) Non-critical service Adequate redundancy to tolerate exchanger scaling Acceptable cleaning frequency

Operating History: 

Operating History TG#3 - Condensing Turbine installed Source of cooling water - PEW Critical Service Zero tolerance to deposit formation

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Water Quality Issues: 

Water Quality Issues

Water Quality Averages: 

Water Quality Averages

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Key Water Quality Parameters : 

Key Water Quality Parameters Calcium Total Alkalinity Total Dissolved Solids pH Temperature Ryznar/Langelier Scale Index

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Scaling Indicies: 

Scaling Indicies Langelier Index (LSI) Ryznar Index (RSI)

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Antiscalant Application: 

Antiscalant Application

Antiscalant Selection: 

Antiscalant Selection Polyphosphates Phosphonates - HEDP/PBTC AEC

AEC: 

AEC Alkyl Epoxy Carboxylate Patented, Non-Phosphorus, Organic CaCO3 Inhibitor Superior to Phosphonate Technology

CaCO3 Inhibition: 

CaCO3 Inhibition % Inhibition 1100 ppm Ca; pH 8.6; Temp 158F; LSI 2.95

AECFactors Influencing Selection: 

AEC Factors Influencing Selection Thermal Stability Proven efficacy in similar system No impact on bitumen recovery Unaffected by suspended solids ‘One Drum’ treatment approach No contribution of phosphorus

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Startup Logistics: 

Startup Logistics Tote Tank/Bulk Tank Installation Chemical Feedlines Injection Nozzle Pump Selection - Capacity - 4 - 20 mAmp

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Program Monitoring: 

Program Monitoring Turbine power output Heat Transfer Coefficient (‘U’ Value) Pressure Drop Fouling Factor PEW Flow Rate/Velocity Water Chemistry Corrosion Rates

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Summary: 

Summary AEC performance has met expectations Condenser performance no longer limits power output CO2 emmissions reduced by 700 tons/yr SO2 emmissions reduced by 59 tons/yr

Summary: 

Summary 3E1 Scaling has been eliminated Acid cleanings have been eliminated eliminate 59 tons of acid waste Return on Investment: $37,147,000 per year

Acknowledgments: 

Acknowledgments Suncor Energy Inc. Transalta Energy Corp.