Multi-stage flash process

Multi-stage flash desalination is to evaporate heated seawater in multiple flash chambers with gradually decreasing pressures, and condense the steam to obtain fresh water. Among the global seawater desalination devices, the multi-stage flash method has the largest output, the most mature technology, and safe operation. It is mainly built in conjunction with thermal power plants and is suitable for large and ultra-large desalination devices. It is mainly used in Gulf countries. Its main development trend is to increase the water production capacity of a single device, reduce unit power consumption, and improve heat transfer efficiency.