Flash distillation basic processes

Cryogenic distillation has been used extensively ia the processiag of natural gas for nitrogen removal and for helium recovery (22—23). Two basic processes are now used for nitrogen rejection from natural gas— the single-column heat-pumped process and the double-column process. Eadier processes utilized multistage flash columns for helium recovery from natural gas (24). [Pg.332]

Explain and sketch the basic flash distillation process... [Pg.100]

Desalination of saline water (sea and brackish waters) is a well-established means of water supply in many countries. Basically, desalination processes in this area can be divided into two groups (1) phase-change/thermal, and (2) membrane-based separation processes. Phase-change processes include multi-stage flash,multiple effect boiling, vapour compression,freezing,humidi-fication/dehumidification and solar stills. RO, ED and membrane distillation (MD) are typical membrane separation processes (Charcosset, 2009). [Pg.297]