Re: [Biofuel] liquid liqid centrifuge

2005-10-13 Thread logan vilas
You're only turning 1400-3000 RPM. How many people do you know cutting on 
engines that are running 6,000 rpm or more. I know I've seen a lot of them 
go wrong, but they're normally not sending things flying in every direction. 
And belive it or not most of the time they work. Also the fact that liquid 
is spinning should help adjust any off balance and smooth out the rotation. 
http://www.rousselet-robatel.com/products/extraction3.php I am planing on 
useing one of their BXP 130p for my setup. I was quoted 15,500US. for 
rebuilt, 27,800us for new. I know that's a lot for the average person 
makeing it in their backyard, but I am setting up for production in south 
Louisiana.

Logan Vilas

- Original Message - 
From: Jason and Katie [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Wednesday, October 12, 2005 10:14 PM
Subject: Re: [Biofuel] liquid liqid centrifuge




 
  http://www.cheresources.com/centcontactor.shtml
 
  I think it would be possible to build something along these lines
 cheaply,
  take that old blender and put it inline with your reactor?


 i wouldnt be inclined to try building/using it without a damn good 
 machinist
 working for me...

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[Biofuel] liquid liqid centrifuge

2005-10-12 Thread michael skinner
has anyone tried a liquid liquid centrifuge.

By continuously removing the dense gycerine you would drive the reaction 
forward requireing less methanol (the whole pont around the two step 
reaction)

please see

http://www.cheresources.com/centcontactor.shtml

I think it would be possible to build something along these lines cheaply, 
take that old blender and put it inline with your reactor?

mike
in San jose ca



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Re: [Biofuel] liquid liqid centrifuge

2005-10-12 Thread John Hayes
michael skinner wrote:
 has anyone tried a liquid liquid centrifuge.
 
 By continuously removing the dense gycerine you would drive the reaction 
 forward requireing less methanol (the whole pont around the two step 
 reaction)
 
 please see
 
 http://www.cheresources.com/centcontactor.shtml
 
 I think it would be possible to build something along these lines cheaply, 
 take that old blender and put it inline with your reactor?

Hey Mike.

The NH Coop that Mike Briggs works with has an line-in centrifuge, but 
as far as I know, they only use it to skip settling, not to reduce the 
amount of methanol.

We've been looking for our own centifuge - thanks for the link!

jh

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Re: [Biofuel] liquid liqid centrifuge

2005-10-12 Thread Andrew Lowe
Quoting michael skinner [EMAIL PROTECTED]:

 has anyone tried a liquid liquid centrifuge.
 
 By continuously removing the dense gycerine you would drive the reaction
 forward requireing less methanol (the whole pont around the two step
 reaction)
 
 please see
 
 http://www.cheresources.com/centcontactor.shtml
 
 I think it would be possible to build something along these lines cheaply,
 take that old blender and put it inline with your reactor?
 
 mike
 in San jose ca

I've used centrifuges in the designs I've done in my head. They do speed
up the process as you don't need to wait for settling to occur, which also means
that you don't need extra tankage. See my comments in the archive from a few
days ago regarding OFM mixing and centrifuges.

Before you start planning to build something along these lines cheaply,
remember that these things are made of steel and spin at many thousands of
RPM's. Unless you're very good at machining and milling you could be making a
potential bomb, you only need something only the slightest bit out of balance
and the thing will tear itself apart spitting shrapnel everywhere. I've seen
pictures of when lab based centrifuges go wrong and it looks like someone
tossed a hand grenade into them. I've also heard of an installation of
several CINC, that's the company that provided the info in the above mentioned
link - Kevin Costner owns it, centrifuges at a biodiesel plant here in Australia
where they couldn't get them to work properly. The plant eventually dumped them
and went for a standard Alfa Laval type of thing.

Don't let these comments put you off centrifuges. Do some web searchs and no
doubt you will come across second hand/excess/scrapped centrifuges. They still
might not be cheap, but then again, it would make a nice experiment.

Regards,
Andrew

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Re: [Biofuel] liquid liqid centrifuge

2005-10-12 Thread michael skinner
do you have any links to NH Coop or Mike Briggs

Original Message Follows
From: John Hayes [EMAIL PROTECTED]
Reply-To: Biofuel@sustainablelists.org
To: Biofuel@sustainablelists.org
Subject: Re: [Biofuel] liquid liqid centrifuge
Date: Wed, 12 Oct 2005 16:35:46 -0400

michael skinner wrote:
  has anyone tried a liquid liquid centrifuge.
 
  By continuously removing the dense gycerine you would drive the reaction
  forward requireing less methanol (the whole pont around the two step
  reaction)
 
  please see
 
  http://www.cheresources.com/centcontactor.shtml
 
  I think it would be possible to build something along these lines 
cheaply,
  take that old blender and put it inline with your reactor?

Hey Mike.

The NH Coop that Mike Briggs works with has an line-in centrifuge, but
as far as I know, they only use it to skip settling, not to reduce the
amount of methanol.

We've been looking for our own centifuge - thanks for the link!

jh

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Re: [Biofuel] liquid liqid centrifuge

2005-10-12 Thread Jason and Katie


 
  http://www.cheresources.com/centcontactor.shtml
 
  I think it would be possible to build something along these lines
cheaply,
  take that old blender and put it inline with your reactor?


i wouldnt be inclined to try building/using it without a damn good machinist
working for me...

---
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