Gas Plant Process Cooling Via Steam-Driven Absorption Chiller ...
Gas Plant Process Cooling Via Steam-Driven Absorption Chiller ...
Gas Plant Process Cooling Via Steam-Driven Absorption Chiller ...
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Master <strong>Gas</strong> SystemKhuff <strong>Gas</strong>8% AG850 psigInletHPHPDGASGCAssociated<strong>Gas</strong>12% AG200 psigLP<strong>Gas</strong>TreatFGCLRUC3Comp.PumpsNGLUTILITIESVentHP St. HeaderLP <strong>Steam</strong> Header+Excess <strong>Steam</strong>CondenserCogen.Units
Master <strong>Gas</strong> SystemKhuff <strong>Gas</strong>8% AG850 psigInletHPHPDGASGCAssociated<strong>Gas</strong>12% AG200 psigLP<strong>Gas</strong>TreatFGCLRUC3Comp.PumpsNGLUTILITIESVentHP St. HeaderLP <strong>Steam</strong> Header+Excess <strong>Steam</strong>CondenserCogen.Units
Master <strong>Gas</strong> SystemKhuff <strong>Gas</strong>8% AG850 psigInletHPHPDGASGCAssociated<strong>Gas</strong>12% AG200 psigLP<strong>Gas</strong>TreatFGCLRUC3Comp.PumpsNGLUTILITIESVentHP St. HeaderLP <strong>Steam</strong> Header70-100 MPPH EXCESS LP STEAM+Excess <strong>Steam</strong>CondenserCogen.Unit
Master <strong>Gas</strong> SystemKhuff <strong>Gas</strong>8% AG850 psigInletHPHPDGASGCAssociated<strong>Gas</strong>15% AG200 psigLP<strong>Gas</strong>TreatFGCLRUC3Comp.PumpsNGLUTILITIESVentHP St. HeaderLP <strong>Steam</strong> Header150 MPPH EXCESS LP STEAM+Excess <strong>Steam</strong>CondenserHRSG
• Generate Power or Drive Equip.• Exhaust under Vacuum using CW.• Design Flow Limitation• Maintainability & Reliability
• Use HP <strong>Steam</strong> as a Motive• Design Challenge with the HighDP Between MP & LP steam.• Limited Pressure, Flow, &Applications.
• Boiler Feed Water Heating toReduce Boiler Fuel Consumption.• Low Temperature Difference
CondenserGeneratorCWHeatSourceChilledWater<strong>Cooling</strong>WaterEvaporatorAbsorber
System Components:•Heat Rejection Unit (CT, HX, Aerial Cooler)•Packaged <strong>Absorption</strong> <strong>Chiller</strong>s•<strong>Process</strong> Heat Exchangers<strong>Cooling</strong>TowerPackaged<strong>Absorption</strong> <strong>Chiller</strong>sMake up WaterChilled WaterCondensate Return
COMPARED TO COMPRESSIONREFRIGERATION:More Reliable with More Stationary EquipmentLittle Maintenance with Less Moving PartsGenerally Cheaper Especially When UtilizingWasted HeatEnvironmental Advantages (Less Carbon Footprint)Not Sensitive to Load Variations
Applications:1.Utilization of Wasted Heat2.High Power Cost Compared to Fuel3.Robust & Unreliable Electrical Supply4.Tri-Generation5.Capturing Environmental Advantages
• Objective of Application:1ReduceExcess<strong>Steam</strong>2Reduce <strong>Plant</strong>’s Energy Intensity
• 5 Potential <strong>Process</strong> Applications for <strong>Absorption</strong> Refrig.24531
• Cool Sweet <strong>Gas</strong> Using Chilled Water• Bypasses on E-141 For <strong>Cooling</strong> Sweet <strong>Gas</strong> to SGC<strong>Cooling</strong>TowerPackaged<strong>Absorption</strong> <strong>Chiller</strong>s75#321PropaneComp.
• Temperature limited by Hydrate Formation• Propane Refrigeration System Limitation:oHigh C3 Condenser Temperature
• Preliminary Evaluation Revealed a Min. Temp of 85 F• Additional Reduction Requires Major Revamp
• Double Effect Design is Pressing for the Following:ooReduce Heat Rejection requirementReduce Make Up Water• LiBr Provides Sufficient Chilled Water Temperature
• Huge Heat Rejection• Excessive Makeup Water• Seasonality & Other Limitations• Humidity & Elevations• Economically Challenged
• Promising Technology for Facilities with Excess LP Heat Source• Economically Challenged in Deserted Areas• Path Forward:oooAlternative Heat SinksFurther Evaluation of All ApplicationsValue Engineering & Higher Capital Efficiency
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