InhaltsangabeForeword. Preface. Introduction: Turning of the Tide. 1. Expanding Fractionator and Compressor Capacity. Reuse of Existing Fractionator. Changing Tray Deck Panels. Alternates to New Compressor. Keeping Compressor Rotor Clean. Calculating Liquid Injection Rates to Compressor. 2. Vacuum Tower Heater Expansion. Entrainment Velocity Limitations. Missing Tray Deck Manways. Heater Draft Limitation. Improving Ejector Performance. Velocity Steam in Heater Passes. 3. NaturalDraftFired Heaters. Control Excess Air. O2 and Combustible Analyzers. Improving Air-Fuel Mixing. Convective Section Air Leaks. Air Preheater Leaks. Indirect Air Preheat. 4. Crude PreFlash Towers. PreFlash Tower Flooding. Energy Saving with Pre-Flash Towers. Capacity Benefits. PreFlash Tower External Reflux. 5. Amine Regeneration and Sulfur Recovery. Amine Capacity Expansion. Sulfur Plant Capacity Expansion. Rich Amine Flash Drum Design. Cascaded Seal Legs. Sulfur Recovery from Sour Water Stripper Off-Gas. Acid Gas of High CO2 Content. Sulfur Plant Oxygen Enrichment. 6. Treating and Drying Hydrocarbons. Jet Fuel Treating. Salt Dryer Operation. WaterWashing Sodium Naphthanates from Jet Fuel. Pipe Distributor Design. Treating Sour Naphtha. Converting Mercaptans to Disulfides. 7. Minimizing Process Water Consumption. TwoStage Wastewater Stripper. Steam Condensate Recovery. Condensate Drum Balance Line Location. Water Hammer. Measuring Condensate Recovery. Cooling Tower Cycles of Concentration. 8. Incremental Expansion Design Concept: Reprocessing Waste Lube Oil. Reprocessing Waste Lube Oil. Vacuum Tower Design. Wash Oil Grid Coking. Vapor Horn Design in Vacuum Towers. Stripping Tray Efficiency. Precondenser Fouling. Pump NPSH Limit in Vacuum Service. Exchanger Fouling in Waste Oil Service. TransferLine Sonic Velocity. 9. Improving Fractionation Efficiency in Complex Fractionators. PreFlash Tower Concept. Intermediate Reflux. Stripping Tray Efficiency. Maximizing Diesel Recovery from Crude. Picket Weirs. Adjusting Pump-arounds. Pressure Optimization. 10. Increasing Centrifugal Pump Capacity and Efficiency. Hydraulic Limitations. Worn Impeller-to-Case Clearances. Impeller Wear Ring. Upgrading Impeller Size. Marginal Cavitation. Viscosity Effects on Efficiency. NPSH Limited Condition. 11. Eliminating Process Control Valves Using Variable-Speed Drivers. Frequency Control of Motors. Eliminating Control Valves on Pump Discharge. Direct Speed Control of Steam Turbine. VariableSpeed Compressors. Spillbacks Waste Energy. Calculating Incentive for Variable-Speed Drivers. Floating Tower Pressure Control. 12. Expanding Refrigeration Capacity. Centrifugal Compressor Head vs. Flow Curve. Calculating Compression Work. Horsepower vs. Suction Pressure Limited. Effect of Increasing Suction Pressure. Reducing Refrigerant Condenser Fouling. Effect of Noncondensibles. Condensate Backup in Condenser. 13. Oversizing Equipment Pitfalls. Amine H2S Scrubber. Optimizing Number of Trays in Absorbers. Consequences of Overdesign. Use of Demister in Knockout Drum. Low Demister Velocity Promotes Mist Entrainment. 14. Optimizing Use of Steam Pressure to Minimize Consumption of Energy. Preserving the Potential of Steam to Do Work. Power Recovery from Steam to a Reboiler. Use of the Mollier Diagram. Cogeneration Plants. Extracting Work from Reboiler Steam Using Existing Equipment. Understanding Thermodynamics of Flowing Steam. Steam Turbine Efficiency Checklist. 15. Expanding Compressor Capacity and Efficiency. Reciprocating Compressors. Pulsation Dampener Plates. Adjustable Head-End Unloaders. Natural Gas Engines. Axial Compressor. Rotor Fouling of Axial Air Compres

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NORMAN P. LIEBERMAN is an independent process design engineer and field troubleshooter. His clients are refineries and petrochemical plants. He is well known in the process industry for his seminar "Troubleshooting Process Operations," which has been presented to over 16,000 engineers and plant operators.

Leseprobe

Foreword. Preface. Introduction: Turning of the Tide. 1. Expanding Fractionator and Compressor Capacity. Reuse of Existing Fractionator. Changing Tray Deck Panels. Alternates to New Compressor. Keeping Compressor Rotor Clean. Calculating Liquid Injection Rates to Compressor. 2. Vacuum Tower Heater Expansion. Entrainment Velocity Limitations. Missing Tray Deck Manways. Heater Draft Limitation. Improving Ejector Performance. Velocity Steam in Heater Passes. 3. Natural-Draft-Fired Heaters. Control Excess Air. O2 and Combustible Analyzers. Improving Air-Fuel Mixing. Convective Section Air Leaks. Air Preheater Leaks. Indirect Air Preheat. 4. Crude Pre-Flash Towers. Pre-Flash Tower Flooding. Energy Saving with Pre-Flash Towers. Capacity Benefits. Pre-Flash Tower External Reflux. 5. Amine Regeneration and Sulfur Recovery. Amine Capacity Expansion. Sulfur Plant Capacity Expansion. Rich Amine Flash Drum Design. Cascaded Seal Legs. Sulfur Recovery from Sour Water Stripper Off-Gas. Acid Gas of High CO2 Content. Sulfur Plant Oxygen Enrichment. 6. Treating and Drying Hydrocarbons. Jet Fuel Treating. Salt Dryer Operation. Water-Washing Sodium Naphthanates from Jet Fuel. Pipe Distributor Design. Treating Sour Naphtha. Converting Mercaptans to Disulfides. 7. Minimizing Process Water Consumption. Two-Stage Wastewater Stripper. Steam Condensate Recovery. Condensate Drum Balance Line Location. Water Hammer. Measuring Condensate Recovery. Cooling Tower Cycles of Concentration. 8. Incremental Expansion Design Concept: Reprocessing Waste Lube Oil. Reprocessing Waste Lube Oil. Vacuum Tower Design. Wash Oil Grid Coking. Vapor Horn Design in Vacuum Towers. Stripping Tray Efficiency. Precondenser Fouling. Pump NPSH Limit in Vacuum Service. Exchanger Fouling in Waste Oil Service. Transfer-Line Sonic Velocity. 9. Improving Fractionation Efficiency in Complex Fractionators. Pre-Flash Tower Concept. Intermediate Reflux. Stripping Tray Efficiency. Maximizing Diesel Recovery from Crude. Picket Weirs. Adjusting Pump-arounds. Pressure Optimization. 10. Increasing Centrifugal Pump Capacity and Efficiency. Hydraulic Limitations. Worn Impeller-to-Case Clearances. Impeller Wear Ring. Upgrading Impeller Size. Marginal Cavitation. Viscosity Effects on Efficiency. NPSH Limited Condition. 11. Eliminating Process Control Valves Using Variable-Speed Drivers. Frequency Control of Motors. Eliminating Control Valves on Pump Discharge. Direct Speed Control of Steam Turbine. Variable-Speed Compressors. Spill-backs Waste Energy. Calculating Incentive for Variable-Speed Drivers. Floating Tower Pressure Control. 12. Expanding Refrigeration Capacity. Centrifugal Compressor Head vs. Flow Curve. Calculating Compression Work. Horsepower vs. Suction Pressure Limited. Effect of Increasing Suction Pressure. Reducing Refrigerant Condenser Fouling. Effect of Noncondensibles. Condensate Backup in Condenser. 13. Oversizing Equipment Pitfalls. Amine H2S Scrubber. Optimizing Number of Trays in Absorbers. Consequences of Overdesign. Use of Demister in Knockout Drum. Low Demister Velocity Promotes Mist Entrainment. 14. Optimizing Use of Steam Pressure to Minimize Consumption of Energy. Preserving the Potential of Steam to Do Work. Power Recovery from Steam to a Reboiler. Use of the Mo ...