Hello. I cant recover eg in solution. Any idea to do this? JJay - 4-8-2017 at 10:28
Is this a homework problem? It's not that hard to do, but sulfuric acid and ethylene glycol are easy to obtain and not that expensive. Most people
would just pour the mixture down the drain and buy them fresh.
[Edited on 4-8-2017 by JJay]devilunix - 4-8-2017 at 12:30
No i work at plant. We have tons of mixture. I need to recover eg. Talkin about over 100tons
[Edited on 4-8-2017 by devilunix]Sigmatropic - 4-8-2017 at 12:44
Seems highly unlikely. Send it to a company specialized in recovering spent acid.
I don't want to get ahead of myself but I don't think SM is the place for questions relating to Industrial chemistry, it does say Amateur
experimentation, doesn't it?
Thinking about it; amateurs in industry, what could go wrong mhhmmmm? PirateDocBrown - 4-8-2017 at 13:59
Neutralize with lime. Filter off calcium sulfate. Fractional distillation. devilunix - 4-8-2017 at 16:02
Neutralize with lime. Filter off calcium sulfate. Fractional distillation.
thanks alot i will try XeonTheMGPony - 4-8-2017 at 19:21
well do a small process batch in a lab then calculate your scale up or you can have one mother of a sod up!
and what do you plan to do with all the calcium sulfate!JJay - 4-8-2017 at 22:40
I would try distilling off the ethylene glycol under vacuum and then distilling the sulfuric acid. I'm pretty sure you'll need a vacuum to distill off
the ethylene glycol to minimize the quantity of sulfate esters and decomposition products. Some sulfate esters will form no matter what you do.devilunix - 5-8-2017 at 02:09
well do a small process batch in a lab then calculate your scale up or you can have one mother of a sod up!
and what do you plan to do with all the calcium sulfate!
i will sell them
Quote:
I would try distilling off the ethylene glycol under vacuum and then distilling the sulfuric acid. I'm pretty sure you'll need a vacuum to distill off
the ethylene glycol to minimize the quantity of sulfate esters and decomposition products. Some sulfate esters will form no matter what you do.
i have vacuum distillation systemunionised - 5-8-2017 at 02:54
I would try distilling off the ethylene glycol under vacuum and then distilling the sulfuric acid. I'm pretty sure you'll need a vacuum to distill off
the ethylene glycol to minimize the quantity of sulfate esters and decomposition products. Some sulfate esters will form no matter what you do.
The water would distil off first and then the acid would react with the glycol and make dioxane (among other things) .
Dioxane's not nice stuff.
You need to neutralise the acid first.
Vacuum distillation's still a good idea.
JJay - 5-8-2017 at 03:09
I think dioxane production would be negligible with a low enough vacuum.PirateDocBrown - 5-8-2017 at 06:33
