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Biuret Formation In Urea Solution Tank.

Started by ASH25320, Apr 19 2008 12:40 PM

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#1 ASH25320

Gold Member

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50 posts

Posted 19 April 2008 - 12:40 PM

Consider the biuret formation reaction
2NH2CONH2=NH2CONHCONH2+NH3
This reaction is favoured at high temperature & low ammonia content.

In a standalone, unstirred tank maintained at temperature of 130 DEG C(By means of a steam coil) having concentration of >92-95% of urea, what is the maximum possible biuret content that could form if held over a period of say one week.(the gaseoues ammonia formed in above reaction is removed through vent from atop the tank) Any Study or graph or info. about this is most welcome. the question is in pure academic interest to know limiting biuret content in a standalone tank.
Thanks for your time...

#2 shunmu

Junior Member

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13 posts

Posted 29 April 2008 - 10:37 AM

Try minimise the moisture content in the tank which initiates the biuret formation.Dry air/nitrogen (dew point -40) purging is recommended.Maintain pressure of 20mm WC as blanketting pressure.

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