quote:
Originally posted by ʆë®Ñï†Ý:
~blinkz~ ohhh oops *gglz* it's just.. after eating my sugar cane I noticed how white and fibrous the left over looked ~grynz~ well thankiees for telling me babes ~smmmooooooooooooooooooocccchheeesss~ *feeling a lil' bit less ignorant* [img]graemlins/kiss.gif[/img]
I shoulda known as soon as I used feeder reactors as a comparison that the whole idea would go down the drain 
oh dear... it was a "hell hole"? 
and u gave up chem cuz of it? ~peeps up at u~ but chem is fun....!
"It is a fact of some great mirth, that the compound that is the single worst chemical blight on sugar processing rate and yield is the wonder drug of a million uses when it comes to alumina manufacturing 
."
*cogs in head grind to a halt* ~tilts head~ are you talking about alcohol? alumina manufacturing? what's that? How exactly do they get the sugar outtah the sugar cane? I thought glucose was fermented to make ethanol which is useful in internal combustion engines? ~confuddled~ [img]graemlins/help.gif[/img]
Grynzz an winkz 4 Eternity
. I should qualify my statement about no waste stream - typically, sugar mills produce about 15% more bagasse (the pithy fibre remains) than the amount required to generate their power and steam requirements. If plants don't have extra boiler and TA cpacity installed (let's face it, not everyone will), then they do have to find a place to dispose of that 15%.
Chem is fun, I agree, but there's no 2 much money or career path in it. The Chem course I took (designed for the Sugar Industry) exposed me to several Chem Eng subjects, and I liked those even more. When I say hellhole - it was a case of please queue up and wait for 20 years for someone to drop off th perch before we will consider you for the smallest promotion. With Chem Eng however, if I want to shift around the world I can do that relatively easily.
The single biggest blight thing - if Sugar cane is burnt, then it rains, the decomposition rate soars. Bacterial attack generates a compound that affects mud settling rate, distorts sugar crystal growth, and kills sugar / molasses iltration rates (centrifugal). That same lil beastie, in the Alumina industry, improves settling in mud and tray thickeners, and is a huge boost to filtration rate. There is almost nothing it cannot do. Oh, you refine Alumina from Bauxite, then you smelt Alumina in Aluminium (yes that last "i" is pronounced
).
You can ferment glucose into ethanol. The common commercial practise however, is to extract most of the sucrose that you can from your sugar cane syrup (about 60% - sell as sugar), then use the remains (molasses - 40%) as the feed source to the ethanol plant.
Sugar out of sugar cane - my u arsks a lots o questionables
. The steps are :
1) - Shred cane
2) Squeeze out juice roller mills
3) Heat it up and hold for 40 mins to destroy natural starch
4) Add lime and heat to 104 deg C - flash back to just under atmospheric boiling point.
5) Add flocculant and settle out mud (typically soil from the farms)
6) Evaporate to syrup to increase supersaturation
7) Evaporate some more - seed with existing sugar crystals (finely grinded) and grow sugar on these
8) Seperate the sugar xals from molasses via centrifugation
9) dry xals - raw sugar
.
Wow - long posterooney thing huh
.