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Design of brine treatment tanks

Design of brine treatment tanks

Design of brine treatment tanks

(OP)
Hi, I have to design brine treatment tanks for a chlorine production plant. Na2CO3 will be added in the first tank to precipitate out calcium and NaOH will be added in the second tank to precipitate out magnesium. I was wondering if there was any way to calculate a rough estimate of the size of the tanks by just taking into account these precipitation reactions and ignoring the effects of minor impurities. Flow rates and conditions are known.
Thanks

RE: Design of brine treatment tanks

Is this a water treatment processes that you are proposing? If so, please present the water analysis.

If this is a water treatment scheme, what you have listed will never work. It is not possible to selectively precipitate.

RE: Design of brine treatment tanks

You might want to consider a standard tank size and system designed specifically for brine ...

http://www.brinesystems.com/

Tell us more about how your system will operate ....

MJCronin
Sr. Process Engineer

RE: Design of brine treatment tanks

consider the residence time and flowrates :)

Gabriel Castaneda, P.E.
http://www.gabcheminc.com

RE: Design of brine treatment tanks

And avoid double posting the same topic

As a chem eng/metallurgist the first part of any answer I give starts with "It Depends"

RE: Design of brine treatment tanks

You can design the reaction tank depend on the residence time .

Actuality reaction between Ca and Na2CO3 need time between 40-50 mins " if your Na2CO3 good mix in brine " , so you can use this time in calculating the Volume .

*Exp : lets say you have flow rate about 50 m3/hr , and the time as we said its 45 mins , so the reaction tank volume about 32 m3 . other thing you can put the inlet line of brine from bottom nozzle for the tank to make more disturbance and decrease the time of reaction .

I don't know why you not mention the sulfate in your topic , but you shall have two reactors in series with same volume .

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