7 replies to this topic

[yanparker]

Hello,

I am working in a team trying to do a mass balance for a sugar refinery. The units consist mainly of affination, clarification, decolorization, crystallization, and drying. We have been given the required output specifications (in terms of pol, invert, ash etc) and the output flowrate. We have started to work out the mass balance backwards. So far, we have been using typical values as assumptions.

 

But we have been facing some problems with the crystallization part...

There are 3 sugars coming out of 3 centrifuges and a final molasse.

We have not been able to find out how the values are affected in each of the set of vacuum pans, mixer and centrifuges(there are 3 set). Could you kindly advice on how we can proceed.

 

Thanking you in advance

[curious_cat]

I think you need to provide specific details, numbers & a sketch before anyone can help you much on this. 

[breizh]

http://www.sugartech...ugals/index.php

 

Consider this resource Engineering Guide ( specific to Sugar plant and engineering) to support your query . As stated by Curious cat lack of information is not helping us to help you.

 

Breizh

Edited by breizh, 24 November 2013 - 01:50 AM.

[yanparker]

 

 

Here is a picture of the units. Basically, we have a set of unit operations for the sugar refinery, and we have to do a simple mass balance. Since we have been given the desired output ( 99.5 % pol, 0.05 invert, 0.05 Ash, 0.06 % moisture),, and the flowrate 28 kg/s,

we have been working the mass balance backwards.

 

For example, in the dryer, which is the last unit after crystallisation, we have assumed the initial moisture content to be 0.8% based on some typical values.

 

So we know what is coming out of the crystallisation ( including the colour which is 50 IU).

 

But since the crystallisation is divided into three parts, and has 3 different sugar that are mixed together, we find it a bit difficult to find a way to calculate the mass balance. Do you have any suggestions?

 

Thanks a lot!

[breizh]

http://www.nzifst.or...qseparation.htm

 

Consider these resource to support your study . You will find examples about the technology and the balances .

 

Breizh

[yanparker]

http://www.nzifst.or...qseparation.htm

 

Consider these resource to support your study . You will find examples about the technology and the balances .

 

Breizh

Thank you very much!! We have been very late with our mass balance, being stuck at this seemingly complicated part. Now we have a good idea how to proceed!

Thanks again!

[JJDR]

Hi i am actually doing a design on the same topic as you, and I am having the same difficulties, I will be grateful if you could help me with the mass balance! Thanking you in advance.

[ashishmishra1234]

You can also go through sugarmill.co.in