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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. Current MSF facilities may have as many as 30 stages. Multi-stage flash distillation plants produce about 26% of all desalinated water in the world, but almost all of new desalination plants currently use reverse osmosis due to much lower energy consumption.

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  • Multi-stage flash distillation (en)
  • 多級閃蒸 (zh)
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  • 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. Current MSF facilities may have as many as 30 stages. Multi-stage flash distillation plants produce about 26% of all desalinated water in the world, but almost all of new desalination plants currently use reverse osmosis due to much lower energy consumption. (en)
  • 多级闪蒸,是一种海水淡化方法。强调多级和闪蒸,其装置由多个闪蒸室组成的. 该装置中利用了海水的蒸发进行脱盐,先将海水加热,再引入接近真空的闪蒸室,由于室内的气压远远低于热海水的饱和蒸汽压,壓力低連常溫的水實際上也會沸騰,所以海水瞬间气化,将室内气化的蒸汽冷却,成为淡水并将其引出,而剩余的热海水再进入下一个闪蒸室,继续接受闪蒸,多次提取热海水中的淡水。 原理:即液体在沸点时将产生蒸汽的原理,将溶液中的水份转变成蒸汽,而与溶解于溶液中的盐份分离。闪化( Flashing )以减压方式降低沸点,并产生蒸汽,再将蒸汽冷凝后即可制得淡水。由于此方法并没有使含盐水真正沸腾(仅是表面沸腾)与热传表面积接触,可以大幅改善因蒸馏产生的积垢( Scale )问题,并于 1950 年代即已有商业化规模,加上其产量较大,广为中东产油国所采用。 (zh)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Multi_Stage_Flash_Desalination_Plant_at_Jebel_Ali_G_Station.jpg
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  • 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. Current MSF facilities may have as many as 30 stages. Multi-stage flash distillation plants produce about 26% of all desalinated water in the world, but almost all of new desalination plants currently use reverse osmosis due to much lower energy consumption. (en)
  • 多级闪蒸,是一种海水淡化方法。强调多级和闪蒸,其装置由多个闪蒸室组成的. 该装置中利用了海水的蒸发进行脱盐,先将海水加热,再引入接近真空的闪蒸室,由于室内的气压远远低于热海水的饱和蒸汽压,壓力低連常溫的水實際上也會沸騰,所以海水瞬间气化,将室内气化的蒸汽冷却,成为淡水并将其引出,而剩余的热海水再进入下一个闪蒸室,继续接受闪蒸,多次提取热海水中的淡水。 原理:即液体在沸点时将产生蒸汽的原理,将溶液中的水份转变成蒸汽,而与溶解于溶液中的盐份分离。闪化( Flashing )以减压方式降低沸点,并产生蒸汽,再将蒸汽冷凝后即可制得淡水。由于此方法并没有使含盐水真正沸腾(仅是表面沸腾)与热传表面积接触,可以大幅改善因蒸馏产生的积垢( Scale )问题,并于 1950 年代即已有商业化规模,加上其产量较大,广为中东产油国所采用。 (zh)
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