Editing Flash evaporation (section)

==Contrast with spray drying==
[[Spray drying]] is sometimes seen as a form of flash evaporation. However, although it is a form of liquid evaporation, it is quite different from flash evaporation.

In spray drying, a [[slurry]] of very small solids is rapidly dried by suspension in a hot gas. The slurry is first [[Aerosol|atomized]] into very small liquid droplets which are then sprayed into a stream of hot dry air. The liquid rapidly evaporates leaving behind dry powder or dry solid granules. The dry powder or solid granules are recovered from the exhaust air by using [[cyclone (industry)|cyclones]], [[Filtration|bag filters]] or [[electrostatic precipitator]]s.