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Fluidized Bed Granulator For Urea

fluidized bed granulation granulator urea fluidised fluidised bed granulation fluidized bed granulation

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#1 rizmeah


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Posted 03 December 2017 - 04:24 PM

I am required to design a granulator for the synthesis of urea. I am implementing a fluidized bed granulator in my design. Is there anything that will aid me in calculating the:


- Dimensions

- Mass and Energy Balances 

- Costings 

- Safety Standards

- Materials of construction 

- Enthalpies


To conclude, what are the vital pieces of information that should be included in my specification sheet


Many thanks in advance,


Rizwan Meah

#2 breizh


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Posted 03 December 2017 - 07:27 PM

Hi ,

Probably good to contact vendor like GEA Niro to get advice or at least form with the minimum requirement to design the equipment .

I believe you can get input from Perrry's handbook .

Good luck


#3 Saml


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Posted 03 December 2017 - 10:55 PM

Please check the following so you get an idea of what you are getting into:


1) Ureaknowhow.com has published a document with the title: "2017 12 Cotabarren Production of Granular Urea as Nitrogenous Fertilizer"


2) Also look for the publication: "Analysis of the product granulometry, temperature and mass flow of an industrial
multichamber fluidized bed urea granulator" Published in "Powder Technology" ini 2011


3) Handbook of Powder Technology. Volume 11:



Regarding your questions:


- Dimensions: Depend on your scale


- Mass and Energy Balances: This is a complicated issue. Because you need Mass, Energy AND number of particles balances.


- Costings : No idea


- Safety Standards: Same as any chemical plant. Main risk is molten urea and formadehyde. Some jurisdictions may impose limits on plume visibility.


- Materials of construction: Mostly stainless steel. I believe that 304 is enough for everything in contact with powder. For molten urea is 316 Urea Grade. Compressed air and steam is CS.


- Enthalpies: See the refered documents

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