Author Topic: Finishing methods  (Read 9706 times)

Offline slabster

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Re: Finishing methods
« Reply #30 on: November 04, 2013, 05:12:01 PM »
Well the old school method was ion exchange resin, which turned the soaps in the fuel back to free fatty acids.  But none of us are convinced that's a good thing to do to your fuel.  That said, from what I understand Carrington is running vehicles on high ratios of free fatty acids, so perhaps we are mistaken.

Is not FFA converted to a Fatty Acid Ester by esterification.

Slabs

Offline Tony

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Re: Finishing methods
« Reply #31 on: November 04, 2013, 10:32:15 PM »
Good question.  Might need a chemist for that!

I suspect not, otherwise the free fatty acids released from glycerol by acid reaction could be methylated to make biodiesel too.

Offline Carrington

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Re: Finishing methods
« Reply #32 on: November 06, 2013, 08:42:33 PM »
Just a quick reply.
After cracking the Glyc all the FFA's need to be converted to methyl ester (biodiesel) by acid esterification. This process is much less straight forward than transeterification of tryglyceride.
When processing I need to convert down to about 0.5% FFA's.

Hope this clears things up.

I should be back soon with tails of my new process and finishing procedure

Cheers

Paul
www. Carringtonfuels.co.uk

Offline julesandtash

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Re: Finishing methods
« Reply #33 on: November 06, 2013, 08:49:24 PM »
I so wanted to say that but thought that you were still cagey about disclosing the details of your process to the world Paul

Good to see you posting, hopefully all is still going well and progressing from last time I saw you
7+ years of making bio.
1997 RangeRover P38A 2.5DSE and 2001 Audi Allroad 2.5 V6 Tdi all on B100
Home heating and hot water system on Palm based B100 and Aarrow 7KW wood burner on glycerol logs

Offline Julian

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Re: Finishing methods
« Reply #34 on: November 06, 2013, 08:56:26 PM »
Great to see you back again, Paul.

We've missed your words of wisdom!
Used Cooking Oil Collection website ... http://www.surreyusedcookingoilcollection.palmergroup.co.uk

Offline Carrington

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Re: Finishing methods
« Reply #35 on: November 06, 2013, 09:04:29 PM »
No wisdom here just rambling of an old fool , but yes should be popping in a bit more soon , just need to finish a little project I've been working on.
www. Carringtonfuels.co.uk

Offline nigelb

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Re: Finishing methods
« Reply #36 on: November 06, 2013, 09:13:33 PM »
Paul...next time your over Leicester way give me a call. I've got 250lts of glyc here for you.