Re: [Biofuel] Pipe-line for small scale biodiesel industry

2006-02-18 Thread JJJN 
Yes You can. It does very well , including glued joints,l but watch out 
you don't get it too hot with pressure. 140 deg is about at the edges of 
the envelope.

Setiyadi wrote:

> Dear All
>
> Can we use PVC pipe for biodiesel process production pipeline?
>
> Best Regards
>
> Sty
>
> * From: * Jared (RogueOP Productions) [mailto:[EMAIL PROTECTED]
> *Sent:* Friday, February 17, 2006 8:46 AM
> *To:* Biofuel@sustainablelists.org
> *Subject:* Re: [Biofuel] Trying to produce biodiesel in laboratory scale
>
> A while back I tried to shake up the methoxide and oil in a closed 
> container (due to lack of glass blender or lab stirrer), and much like 
> a shaken soda bottle it expanded a bit and "fizzed " out a bit. I am 
> looking for a better test setup that can prevent this type of thing. 
> Would stirring the mixture rather than shaking it prevent this?
>
> On 2/16/06, *Charles List* <[EMAIL PROTECTED] 
> > wrote:
>
> Yup
>
> He's basically refluxing it, I assume, with the liebig condenser 
> vertically attached to the reaction vessel. A closed container would 
> do the same thing!
>
> A good use for the liebig condenser would be to reclaim the excess 
> methanol from the glycerine, but they are usually pretty small, so 
> would take a while.
>
> Charles List
>
> On 17/02/2006, at 7:27 AM, Jared (RogueOP Productions) wrote:
>
>
>
> How did you utilize the liebig condensor? Wouldnt that condense the 
> gas given off by the reaction into a liquid? Is that the jist of it? 
> Turning it into a less volitile liquid instead of a gas?
>
> On 2/15/06, *Duarte Nuno Januário* < [EMAIL PROTECTED] 
> > wrote:
>
> Hi all!
>
> I've been trying (made 5 batches) to produce biodiesel in a 
> laboratory, for educational purposes. This is what I've been doing:
>
> - 1 liter of virgin oil from supermarket
>
> - 200 mL of methanol
>
> - 3,5 grams of sodium hydroxide
>
> - Prepared the sodium metoxide by stirring for 24 hours (magnetic 
> stirrer) in an closed Erlenmeyer
>
> - Preheated the oil to 55ºC
>
> - Using a flask with an attached Liebig condenser (to prevent methanol 
> vapors to escape), mixed vigorously for 1 hour maintaining agitation 
> and constant temperature (eventually drops to 52ºC when the metoxide 
> is added) and maybe rising to a maximum of 60ºC at some instants.
>
> I do get a clear phase separation after 24 hours, but my biodiesel 
> isn't crystal clear.
>
> When I mix a sample of the unwashed biodiesel with water and shake it, 
> the emulsion won't separate…. It will after some hours, but with a lot 
> of soap formation, widespread in the container.
>
> I'm using good reactants (not p.a. but trustworthy) and anhydrous 
> conditions.
>
> There one thing I should say: I never got all the sodium hydroxide to 
> completely dissolve in the methanol. No matter how long I keep 
> stirring, it simply won't dissolve quantitatively. But I do filtrate 
> the remains of solid hydroxide. Do you think this can be the problem? 
> How can I solve it?
>
> What can I be doing wrong? Why do I keep getting all this soap? Where 
> do you think the problem might be? In a reactant? Bad quality oil? Do 
> you think I should titrate the virgin oil?
>
> Thank you all for your attention
>
> Duarte Nuno
>
>
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>
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> messages):
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>
>
>
>
>
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>
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> messages):
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[Biofuel] Pipe-line for small scale biodiesel industry

2006-02-16 Thread Setiyadi 









Dear All

Can we use PVC pipe for biodiesel process production
pipeline?

 

Best Regards

Sty

 









From: Jared (RogueOP
Productions) [mailto:[EMAIL PROTECTED] 
Sent: Friday, February 17, 2006
8:46 AM
To: Biofuel@sustainablelists.org
Subject: Re: [Biofuel] Trying to
produce biodiesel in laboratory scale



 

A while back I tried to
shake up the methoxide and oil in a closed container (due to lack of glass
blender or lab stirrer), and much like a shaken soda bottle it expanded a bit
and "fizzed " out a bit. I am looking for a better test setup that can
prevent this type of thing. Would stirring the mixture rather than shaking it
prevent this?



On 2/16/06, Charles
List <[EMAIL PROTECTED]
> wrote:

Yup



 





He's basically refluxing it, I assume, with the liebig condenser
vertically attached to the reaction vessel. A closed container would do the
same thing!





 





A good use for the liebig condenser would be to reclaim the excess
methanol from the glycerine, but they are usually pretty small, so would take a
while.





 





Charles List







 





 





On 17/02/2006, at 7:27 AM, Jared (RogueOP Productions) wrote:







How did you utilize the
liebig condensor? Wouldnt that condense the gas given off by the reaction into
a liquid? Is that the jist of it? Turning it into a less volitile liquid
instead of a gas?



On 2/15/06, Duarte
Nuno Januário < [EMAIL PROTECTED]> wrote: 





Hi all!



 

 



I've been trying (made 5 batches) to produce biodiesel in a laboratory,
for educational purposes. This is what I've been doing: 



 



-
1 liter of virgin oil from supermarket 





-
200 mL of methanol 





-
3,5 grams of sodium hydroxide 





-
Prepared the sodium metoxide by stirring for 24 hours (magnetic
stirrer) in an closed Erlenmeyer 





-
Preheated the oil to 55ºC 





-
Using a flask with an attached Liebig condenser (to prevent
methanol vapors to escape), mixed vigorously for 1 hour maintaining agitation
and constant temperature (eventually drops to 52ºC when the metoxide is added)
and maybe rising to a maximum of 60ºC at some instants. 





I do get a clear phase separation after 24 hours, but my biodiesel
isn't crystal clear.





When I mix a sample of the unwashed biodiesel with water and shake it,
the emulsion won't separate…. It will after some hours, but with a lot of soap
formation, widespread in the container. 





I'm using good reactants (not p.a. but trustworthy) and anhydrous conditions.



 



There one thing I should say: I never got all the sodium hydroxide to
completely dissolve in the methanol. No matter how long I keep stirring, it
simply won't dissolve quantitatively. But I do filtrate the remains of solid
hydroxide. Do you think this can be the problem? How can I solve it? 



 



What can I be doing wrong? Why do I keep getting all this soap? Where
do you think the problem might be? In a reactant? Bad quality oil? Do you think
I should titrate the virgin oil? 



 



Thank you all for your attention



 

 



Duarte
Nuno






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Search the combined Biofuel and Biofuels-biz list archives (50,000
messages):





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