What is the criterion for determining when to discharge material from a multi-effect evaporator?
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For example, if I use 3-effect evaporation to concentrate it to 80%, how can I determine that the final concentration has reached 80%? Is it based on the boiling point at the set vacuum level? Is it checked to see if it’s boiling through a sight glass?
There are always certain physical and chemical properties that are related to this concentration; it’s necessary to find those that are easiest to measure, require the least cost, and offer the highest level of reliability.
It is possible to check whether discharge occurs based on concentration
Thank you. But mine is in continuous production, so it’s impossible not to monitor the concentration constantly. Is there any other good solution?
It’s too expensive; it’s an overkill. The cost of one mass flow meter is enough to buy me an evaporator
Online refractometers are inexpensive, but it’s not clear whether they are suitable for your materials. If you don’t want to use any equipment at all, then it will be impossible to determine the concentration of the materials. Even if the boiling point is known and it’s indicated that the concentration has been reached, a measurement is still necessary to get an accurate result
Loop. External evaporation testing is conducted; products that pass the test are released, while those with insufficient concentration are sent back.
Sampling test at the outlet of the final-stage circulation pump, or the current of the main pump can be measured; that’s all, thanks