单项选择题
In a flash evaporator, scale as a result of higher than normal temperatures in most likely to occur in the （）
A.second stage feed heater
B.saltwater feed heater
C.distillate cooler
D.second stage vapor separator
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相关考题
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单项选择题
Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator, are removed by the （）
A.spray pipes
B.demisters
C.condensers
D.splash baffles -
单项选择题
The demisters installed in a flash-type evaporator serve to （）
A.deaerate the first effect distillate
B.filter the condensed flash vapors
C.deaerate the first and second effect distillate
D.remove small water droplets entrained in the flashed vapor -
单项选择题
A vacuum is initially established in the first and second stages of a low pressure evaporator by the use of （）
A.vacuum drag from the auxiliary condensate system
B.individual vacuum pumps
C.a single non-condensing air ejector
D.a two stage air ejector
