Abstract: Low temperature multi-effect distillation with thermal vapor compressor (TVC-MED) is one of the most widely used thermal seawater desalination technologies. Its performance is affected by many factors such as TVC, evaporator and regenerator. In this paper, the process system model of 15-effect TVC-MED seawater desalination plant is established, and the effect of seawater feeding mode, excess heat recycle of concentrated brine and produced water, TVC extraction position and power steam conditions on the performance of seawater desalinization plant are analysed, which provides a theoretical basis for the subsequent process system design.

Key words: sea water desalinization, low-temperature multi-effect distillation, TVC