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2017-09-26View Original

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我有一种盐水要浓缩,然后结晶离心回收盐。我想采用真空浓缩,我现在有120℃的加热蒸汽,选在要选用一种泵或者罗茨机产生真空,以便能够保证使盐水在低沸点先蒸发,不知那种泵或者罗茨机能做到?下表是我的数据,如果选罗茨机的话,真空度只能达到0.005MP,此时对应沸点117.5℃,在只有120℃的加热蒸汽的情况下,温差太小,显然不行。有没有真空泵能够达到0.078MP的真空度,这样可以在85.5℃的情况下蒸发?或者更低的真空度也行。 真空度,MP 母液沸点,℃ 0 127 -0.005 117.5 -0.02 114 -0.024 -0.03 111.4 -0.04- 107.4 -0.054 101.8 -0.062 97.8 -0.071 89.6 -0.075 86.6 -0.078 85.5 -0.1 60
Reply #22024-05-30
加冷凝后,任何真空泵基本都可实现!
Reply #32024-06-10
便宜就水环,主要是算一下抽气量

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