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Natural gas processing technology lng process
- 1. Mohamed Abdelraof Saad LIQUEFIED NATURAL GAS
- 2. Mohamed Abdelraof Saad 1. Gas treating before liquefaction 2. Liquefaction cycles 3. Storage 4.Transport 5. Regasification and cold utilization
- 4. Mohamed Abdelraof Saad 3D Model of LNG Train Liquefaction Heat Exchanger H2O Removal Unit CO2, H2S Removal Unit Amine Regenerator Air fan cooling 320 units Refrigerant Compressors Turbines Stacks Liquefaction Heat Exchanger H2O Removal Unit CO2, H2S Removal Unit Amine Regenerator Air fan cooling 320 units Refrigerant Compressors Turbines Stacks
- 5. Mohamed Abdelraof Saad Fridge to LNG
- 7. Mohamed Abdelraof Saad PEAK SHAVING PLANTS
- 8. Mohamed Abdelraof Saad BASELOAD PLANTS AND STRANDED RESERVES
- 9. Mohamed Abdelraof Saad LIQUEFACTION CYCLES
- 10. Mohamed Abdelraof Saad Cascade cycle Refrigerant systems can be "stacked" to provide cooling below -40°F. The low stage uses methane as the working fluid. The methane is boiled in a chiller at near its atmospheric boiling point (-259°F), is compressed and condensed, rejecting heat to an ethylene evaporator at approximately -150°F. In turn, the ethylene is compressed and condensed, rejecting heat to a propane chiller at approximately - 30°F. Finally, the propane rejects its heat to the surroundings.
- 11. Mohamed Abdelraof Saad Joule-Thomson liquefaction plant
- 12. Mohamed Abdelraof Saad Simple closed cycle liquefaction process
- 13. Mohamed Abdelraof Saad Open cycle expander plant
- 14. Mohamed Abdelraof Saad Peak-shaving plant with open cycle. Main feed to chilling , exp. , heating , comp to power plant which cool down the other LNG part Vapor after prefinal JT still have pressure to cool and then to P plant Comp. to Recycle B. off, P plant gas and/or prefinal JT gas
- 15. Mohamed Abdelraof Saad Schematic of a hypothetical two-fluid cascade cycle 2, 5, 9, 11, 12 Cooling then expansion 11 12 13 & vap. from receivers Heating then comp. 13 Final expansion Then boil off comp.
- 16. Mohamed Abdelraof Saad Schematic of simple closed- cycle, single- flow mixed refrigerant
- 17. Mohamed Abdelraof Saad Schematic of commercial closed-cycle PRICO® system
- 18. Mohamed Abdelraof Saad Schematic of a closed- cycle propane precooled mixed refrigerant system. Shaded areas and dotted lines represent propane cooling system
- 19. Mohamed Abdelraof Saad Open cycle schematic. Refrigerant and process stream are mixed
- 20. Mohamed Abdelraof Saad Gas Pipeline Boiloff Compressors Tank 1 Tank 2 Tank 3 Natural Gas LNG –Tanks toVaporizers LNG – Ship toTanks As LNG boils off, the gas is withdrawn from the tanks and compressed. As gas is required, pumps inside the tanks transfer LNG to the plant vaporizers. The plant vaporizers warm the LNG until it vaporizes. ReceivingTerminal – LNG Gas Flow
- 21. Mohamed Abdelraof Saad Receiving terminal
- 22. Mohamed Abdelraof Saad Re-gasificationLNG enters a cryogenic pump capable of producing the required send-out pressure (e.g. up to 130 bar have been studied). LNG at the required discharge pressure is heated in two stages. In the first stage LNG is heated from -160 °C to -10 °C in a compact printed circuit heat exchanger with propane as heating medium. In the second stage, LNG can be heated further using seawater as heating medium in a shell and tube heat exchanger. In the LNG/Propane heat exchanger, heat is exchanged against propane circulating in a closed loop. The propane enters the heat exchanger at approx. 0 °C at 4.7 bar as gas. In the heat exchanging process propane is condensed, and leaves the exchanger in liquid state at approximately -5 °C. The propane in the closed loop is then pumped by the circulating pump and heated against seawater in titanium semi welded plate heat exchangers. In these heat exchangers, the propane is evaporated and heated to 0 °C before returning as gas to the printed circuit heat exchanger.
- 23. Mohamed Abdelraof Saad Typical LNG Plant
- 25. Mohamed Abdelraof Saad LNG Tanker.