Biopowered - vegetable oil and biodiesel forum
General => Wiki and forum discussion => Topic started by: Tony on March 29, 2011, 10:24:19 AM
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http://www.biopowered.co.uk/wiki/Two_stage_processing
Any comments?
I'd quite like to make it a little less dry by adding a pic of the Glycerol being slurped back in or something. I'll take some pics next time I do a batch - trouble is there isn't much to see.
Maybe I can take two samples during processing, and compare side by side in a pic so the relative amounts of settled glycerol can be seen at the ends of stage one and stage two.
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Nice page, well done!
I used to do a 3/27 at the end of the first stage, just out of interest. I don't bother any more, but a photo of a 3/27 at the end of the first stage compared to one at the end of the second might give some visual value.
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Ah, interesting idea. I'm quite curious as to the results of that too. :)
Another point, we have a mix of 27/3 and 3/27 references in the wiki, I'd like to make them consistent.
I've always called it a 27/3, but I see the original infopop thread calls it 3/27.
Also, googling "27/3 test biodiesel" returns 100k hits and "3/27 test biodiesel" returns 167k hits.
So I'd be tempted to adjust my personal lexicon and make 3/27 the wiki standard if that's OK with everyone else?
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Actually:
27/3 test site:vegetableoildiesel.co.uk - 2500 hits
3/27 test site:vegetableoildiesel.co.uk - 950 hits
So it's more popular to call it 27/3 in the UK.
Sigh, nothing is ever simple is it?
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No it's not! I've always known it as a 3/27 test and have only noticed it being called 27/3 in the last few months. What ever we decide I think we have to keep a constant standard. Being a stubborn old sod, I'd go for the former, it's what it started out life as.
Also it's not an issue, but isn't it easer to write a link [[titrate|Titration]], than add redirects for each variant? Or is there some other cunning reason I've missed?
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Probably, I'll change it.
I've also added a 3/27 page if you wouldn't mind a peer for factual correctness.
http://www.biopowered.co.uk/wiki/3/27_test
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Been a busy boy then ... another good page, well done.
I added an ° sign, but isn't the ration 1:9?
Probably being too precious now but I think we've usually put "Source: BassAddict" in the past to credit photos.
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That's not precious, that's diligent, and I appreciate it being pointed out.
I've made the appropriate corrections.
Just keeping an eye on http://www.biopowered.co.uk/wiki/Special:WantedPages and what we're missing :)
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Yes, I keep looking at that page and thinking I should get my finger out, but I'm just really busy with "stuff" at the moment. Works slow, so I should have a bit of time, it's just that "stuff" keeps getting in the way. Can't work out how I fitted "stuff" in when I had a proper job!
I'll make a separate post so no one's double working, but I'll shortly have a bash at the venturi and eductor pages. I want to make an eductor for my plant, so I'll do a step by step photo guide to accompany the text.
Also in the middle of making a multi function 20 litre drum warming come fat melting come static dewatering come 40 litre preheat tank. So I'll do a page on that too once the "stuff" is out the way!
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I know exactly what you mean ;D
There's lots of things I want to do but stuff gets in the way...
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It's been 3/27 for years, it's only recently I've seen people getting it the wrong way round.
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Julian, I followed your suggestion and have a fabulous photo to add - will hopefully add it before too long!
Good suggestion chap :)
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http://www.biopowered.co.uk/wiki/Two_stage_process ;D
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We like that!
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I'm surprised so much glycerol was present in the second stage sample - the few times I've done it before I've done stage two and just had a few spots of glycerol drop out, nothing like that much.
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Looks about the same as I get, but then I've been experimenting with altering the proportions of the two stages, making the second stage a higher percentage. So far with good results.
Simultaneously I've been reducing the catalyst, probably scared by the 80 litres of soap I made a little while back. This also with very good results. Last batch I used a base of 4.5g NaOH and arbitrarily reduced the titration figure by a few points and got what was probably the second best 3/27 pass I've ever had after an hour processing the second stage. I think I'll have to try test sooner after the introduction of the second stage, my guess is it's converting quite quickly.