盐水的范式改变.pdf

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1、Membrane CrystallizerParadigm Change for Brine ValorisationNikolay VoutchkovExecutive DirectorNEOM Water Innovation Center,KSAWhat Is It?Membrane Crystallization System which Uses 10 times Less Energy than Thermal CrystallizersTotal Energy Use for Salt Crystallization 7.5 kWh/m3vs.75 to 80 kWh/m3For

2、 Thermal Crystallization Separation by Froward Osmosis Cellulose Triacetate MembranesDraw Solution MgCl2Produced from Seawater Using Selective SWRO Membranes&Recovered by OARO Purity of Crystallized Minerals 99.6%to 99.9%Mineral Crystal Size Controlled by Surface Tension of Membranes223Membrane Crys

3、tallization System Feasible,Flexible and Scalable34OAROChemical DosingMg(OH)2CaCO3Intake and PretreatmentNFSWRO+UHPROFlushing&CIP 40 kg/day MembraneCrystallizerBrine UFPLC&SCADAMembrane Crystallization System Feasible 1,000 m3/day Duba Desalination Plant,Saudi ArabiaCapacity:40 kg of NaCl/day 99.6%p

4、urity Flux:1.5 to 2 LmhFeed pressure:0.1 bar.MgCl2 draw solution:90 kg,Circulation Vacuum:0.8 barCost of NaCl Production Reduced from US$38/ton to US$20/tonMarket Price of NaCl=US$65/tonThis information is confidential and privileged.4Cooling Tower for Reconcentration of Draw Solution Duba Valorizat

5、ion Plant CrystallizerFeed Salinity:200-250 ppt,Concentrated Salinity:400-450 ppt,FO Unit Power 5 kWh/m3Draw Solution Recovery Power 2.5 kWh/m35Recognized with Global Prize of Innovation in Desalination&IDRA Award in December 2024Changing the Paradigm of Desalination by Multifunctional Mineral Selec

6、tive SWRO MembranesEVOLVING from Desalination to Desalination&Brine Valorization Plants6Membrane Crystallizer Development Next Steps&Costs Initial MBC System Piloting To be Completed by September 2025-US$1.2 million NeededDeveloping Prototy