Multi-stage flash distillation (MSF)

Multi-stage flash distillation (MSF) is a water desalination process that distills sea water by flashing a portion of the water into steam in multiple stages of what are essentially countercurrent heat exchangers. Multi-stage flash distillation plants produce about 60% of all desalinated water in the world but is now utilised only for large capacity installations associated with fossil fueled power plant.