Re: [Biofuel] Gov Auction for pressure filter
for the German PPO fuel standard, which excludes WVO altogether. Use high-quality oil. With experience you can tell quite a lot about the quality of oil from its appearance, colour and smell, but you still can't be sure. Someone we know who fitted an Elsbett single-tank SVO system to his VW Golf was careful to use oil only from the works cafetaria at his job, where the manager had assured him it was pure, high-quality vegetable oil. We weren't so sure so we titrated it for him. He was shocked by the result -- it titrated at 8.5 ml of NaOH solution, bad oil! Much too acidic to use for SVO and it had a high water content, difficult to remove. Don't take chances, learn to titrate your oil, and if it's too acidic find better-quality oil. -- From: Fuel quality http://journeytoforever.org/biodiesel_svo.html#gnl -- From: Fuel quality http://journeytoforever.org/biodiesel_svo.html#gnl Titration: http://journeytoforever.org/biodiesel_make2.html#titrate German Quality Standard for Rapeseed Oil as a Fuel: http://journeytoforever.org/biodiesel_svostd.html Fuel Injection Equipment (FIE) Manufacturers report: http://journeytoforever.org/biodiesel_FIEM.html Waste oil that titrates at 2.0 ml NaOH solution or less will contain little or no water anyway. The important thing is how well-used, or overused, the oil is. Titration will tell you that. The higher the titration result, the more water it's likely to contain, and the more difficult it will probably be to remove the water. -- From: Removing the water http://journeytoforever.org/biodiesel_make.html#water Read what list member Dale Scroggins says there about removing water, not as simple as it sounds. I'm not convinced a centrifuge does such a good job anyway. People using centrifuges with biodiesel in the US have found the fuel tested as sub-standard. We have some lab test results of finished biodiesel made here in Japan in a $70,000 commercial processor, washed and dried, and then it was centrifuged, and samples sent to the lab of the centrifuged stuff, but it didn't come close to standard spec. (Our biodiesel is standard spec though.) That's about biodiesel, but the same should apply to SVO use. If you use good quality waste oil there's no need to filter it, settling works better. Re filtering vs settling, see: http://www.mail-archive.com/biofuel@sustainablelists.org/msg62219.html http://www.mail-archive.com/biofuel@sustainablelists.org/msg62233.html http://www.mail-archive.com/biofuel@sustainablelists.org/msg62260.html http://www.mail-archive.com/biofuel@sustainablelists.org/msg62294.html As for the 10,000 miles, that's not very much in the life of a diesel motor. As Todd says, nothing's ever broken till it breaks. Best wishes Keith Thanks for listening Bud - Original Message - From: mailto:[EMAIL PROTECTED]Aaron Wagner To: mailto:biofuel@sustainablelists.orgbiofuel@sustainablelists.org Sent: Friday, July 07, 2006 1:13 PM Subject: [Biofuel] Gov Auction for pressure filter This may be good for cleaning used fryer oil. http://cgi.govliquidation.com/auction/view?id=897708 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Gov Auction for pressure filter
I agree Keith; In fact if in collection, you keep ahead of your processing rate, oil has a chance to settle. I have found that oil that has been sitting for several weeks is very dry if carefully decanted. It will always contain at least 1% water even so, which can be removed by heat and vacuum but un settled oil is way way worse. Settling also results usually in oil which is specularly clear ( You can read fine print through it) when observed in a glass container which means it is quite clean, perhaps cleaner than filtering may give you. BTW as a note about this, oil which has settled and then been stored in cold wintry conditions, when brought inside, if it sits on a warm surface will dissapoint you. Convective currents in the oil due to warming will undo all the settling!! :( Bummer. Joe Keith Addison wrote: what if you dont use it in the final separation of glyc/ffa? wouldnt it be faster to spin out the chunks and as much water as possible after collection and before storage of WVO? it wouldnt be a cleaning per se, just another step of preparation. maybe not any real use for a 20 gallon batch setup but if you were collecting large amounts of WVO for a coop and needed to maximize storage it would be handy. What for Jason? Superfluous. Use good oil and settle it. Best Keith Jason ICQ#: 154998177 MSN: [EMAIL PROTECTED] - Original Message - From: Keith Addison [EMAIL PROTECTED] To: biofuel@sustainablelists.org Sent: Saturday, July 08, 2006 7:33 PM Subject: Re: [Biofuel] Gov Auction for pressure filter Hello Bud, Aaron Aaron, My name is Bud and I'm new to this forum so I hope you folks can give a little slack if I get out of line. I have been using WVO for some time and had a lot of problems getting all of the junk out, but water was the biggest trouble. I tried filters, heating and settling and re-filtering with very little sucess. One day I was talking to a friend and he kept saying centrifuge. So I did some reseach, asked a lot of question, some real deep thinking and desided to build a small centrifuge and then all of the problem were gone. Now it's just a one function process. All that is needed is to use a fine kitchen screen as I pour the oil into the machine, warm it up a little and the centrifuge does the rest. It comes out almost as clean as new. I have been using my centrifuged oil for more than 10,000 miles and have yet to change my fuel filter. Therefore I don't think filtering is not the answer. No, but neither is a centrifuge, much. IMHO they're both answers to the wrong question, or at least to an incomplete question, based on the idea that suspended particles and water are the only aspects of fuel quality. Most of the Straight Vegetable Oil world seems to have a strange idea of fuel quality control - filter, filter, filter. Same with a centrifuge - basically, filter it better. Often they filter it down to 0.5 microns, though the specified final fuel filter might be only 10 microns. But what about the contaminants that filtering won't remove? For instance what's the acid value of your oil, Bud? Before and after centrifuging? A lot of SVO people go for SVO instead of biodiesel in the first place because they don't want to learn how to titrate the oil (and to avoid all those poisonous chemicals). But if you're going to have an idea of the quality of the waste oil you're using as fuel you have to titrate it anyway. The only existing quality standard for SVO is the German Quality Standard for Rapeseed Oil as a Fuel (RK-Qualitätsstandard), which specifies an Acid Value of 2.0 mg KOH/g. This is the Free Fatty Acid (FFA) content. Elsbett Technologie says it can affect the lube oil, the Fuel Injection Equipment Manufacturers (Delphi, Stanadyne, Denso, Bosch) say FFA corrodes fuel injection equipment and leaves sediments on parts. An examination of the defective sections found substantial surface erosion of the hardened steel high pressure parts, which are not acid-proof. The problem was traced to a supply of soy oil which was not the usual food-grade oil and had a high acid content. -- BioCar (German page): http://biocar.de/info/warnung1.htm FFA isn't removed by filtering, I doubt it will all be removed by centrifuge. The way to tell how much FFA your oil contains is to titrate it. New, unused SVO is the best oil to use. See German PPO fuel standard: Quality Standard for Rapeseed Oil as a Fuel. Good quality WVO can be used (though see kit supplier's warranty). Oil quality of WVO is best checked with the titration test used in making biodiesel to determine the Free Fatty Acid (FFA) content of the oil. The lower the titration result the better the quality. It's often said that oil titrating at more than 3.5 ml 0.1% NaOH solution should be processed into biodiesel rather than used with a Straight Vegetable Oil system. More than that and the oil will be too acidic and will probably contain water, both of which can damage the fuel system
Re: [Biofuel] Gov Auction for pressure filter
Aaron, My name is Bud and I'm new to this forum so I hope you folks can give a little slack if I get out of line. I have been using WVO for some time and had a lot of problems getting all of the junk out, but water was the biggest trouble. I tried filters, heating and settling and re-filtering with very little sucess. One day I was talking to a friend and he kept saying "centrifuge". So I did some reseach, asked a lot of question, some real deep thinking and desided to build a small centrifuge and thenall of the problem were gone. Now it's just a one function process. All that is needed is to use a fine kitchen screen as I pourthe oilinto the machine, warm it up a little and the centrifuge does the rest. It comes out almost as clean as new. I have been using my centrifuged oil for more than 10,000 miles and have yet to change my fuel filter. Therefore I don't think filtering is not the answer. Thanks for listening Bud - Original Message - From: Aaron Wagner To: biofuel@sustainablelists.org Sent: Friday, July 07, 2006 1:13 PM Subject: [Biofuel] Gov Auction for pressure filter This may be good for cleaning used fryer oil. http://cgi.govliquidation.com/auction/view?id=897708 ___Biofuel mailing listBiofuel@sustainablelists.orghttp://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.orgBiofuel at Journey to Forever:http://journeytoforever.org/biofuel.htmlSearch the combined Biofuel and Biofuels-biz list archives (50,000 messages):http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Gov Auction for pressure filter
Hi
Bud,
Do you
have any details about constructing your centrifuge available
online?
Thanks, one of many Dougs here.
-Original Message-From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]On Behalf Of Bud
Lois PittsSent: July 8, 2006 12:49 AMTo:
biofuel@sustainablelists.orgSubject: Re: [Biofuel] Gov Auction for
pressure filter
Aaron, My name is Bud and I'm new to this forum so I hope you folks
can give a little slack if I get out of line.
I have been using WVO for some time and had a lot of problems getting all
of the junk out, but water was the biggest trouble. I tried filters,
heating and settling and re-filtering with very little sucess. One day I was
talking to a friend and he kept saying "centrifuge". So I did some reseach,
asked a lot of question, some real deep thinking and desided to build a small
centrifuge and thenall of the problem were gone. Now it's just a one
function process. All that is needed is to use a fine kitchen screen as I
pourthe oilinto the machine, warm it up a little and the
centrifuge does the rest. It comes out almost as clean as new. I have been
using my centrifuged oil for more than 10,000 miles and have yet to change my
fuel filter. Therefore I don't think filtering is not the answer.
Thanks for listening
Bud
- Original Message -
From:
Aaron
Wagner
To: biofuel@sustainablelists.org
Sent: Friday, July 07, 2006 1:13
PM
Subject: [Biofuel] Gov Auction for
pressure filter
This may be good for cleaning used fryer oil.
http://cgi.govliquidation.com/auction/view?id=897708
___Biofuel mailing
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Search the combined Biofuel and Biofuels-biz list archives (50,000 messages):
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Re: [Biofuel] Gov Auction for pressure filter
yes, i am also interested. we discussed centrifuge filtering a while ago, and it seemed rather expensive, and required special equipment. is there a simpler, safe method to build a centrifuge? JasonICQ#: 154998177MSN: [EMAIL PROTECTED] - Original Message - From: Doug Turner To: biofuel@sustainablelists.org Sent: Saturday, July 08, 2006 2:09 PM Subject: Re: [Biofuel] Gov Auction for pressure filter Hi Bud, Do you have any details about constructing your centrifuge available online? Thanks, one of many Dougs here. -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Bud Lois PittsSent: July 8, 2006 12:49 AMTo: biofuel@sustainablelists.orgSubject: Re: [Biofuel] Gov Auction for pressure filter Aaron, My name is Bud and I'm new to this forum so I hope you folks can give a little slack if I get out of line. I have been using WVO for some time and had a lot of problems getting all of the junk out, but water was the biggest trouble. I tried filters, heating and settling and re-filtering with very little sucess. One day I was talking to a friend and he kept saying "centrifuge". So I did some reseach, asked a lot of question, some real deep thinking and desided to build a small centrifuge and thenall of the problem were gone. Now it's just a one function process. All that is needed is to use a fine kitchen screen as I pourthe oilinto the machine, warm it up a little and the centrifuge does the rest. It comes out almost as clean as new. I have been using my centrifuged oil for more than 10,000 miles and have yet to change my fuel filter. Therefore I don't think filtering is not the answer. Thanks for listening Bud - Original Message - From: Aaron Wagner To: biofuel@sustainablelists.org Sent: Friday, July 07, 2006 1:13 PM Subject: [Biofuel] Gov Auction for pressure filter This may be good for cleaning used fryer oil. http://cgi.govliquidation.com/auction/view?id=897708 ___Biofuel mailing listBiofuel@sustainablelists.orghttp://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.orgBiofuel at Journey to Forever:http://journeytoforever.org/biofuel.htmlSearch the combined Biofuel and Biofuels-biz list archives (50,000 messages):http://www.mail-archive.com/biofuel@sustainablelists.org/ ___Biofuel mailing listBiofuel@sustainablelists.orghttp://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.orgBiofuel at Journey to Forever:http://journeytoforever.org/biofuel.htmlSearch the combined Biofuel and Biofuels-biz list archives (50,000 messages):http://www.mail-archive.com/biofuel@sustainablelists.org/ No virus found in this incoming message.Checked by AVG Free Edition.Version: 7.1.394 / Virus Database: 268.9.9/382 - Release Date: 7/4/2006 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.9/382 - Release Date: 7/4/2006 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Gov Auction for pressure filter
anyway. The important thing is how well-used, or overused, the oil is. Titration will tell you that. The higher the titration result, the more water it's likely to contain, and the more difficult it will probably be to remove the water. -- From: Removing the water http://journeytoforever.org/biodiesel_make.html#water Read what list member Dale Scroggins says there about removing water, not as simple as it sounds. I'm not convinced a centrifuge does such a good job anyway. People using centrifuges with biodiesel in the US have found the fuel tested as sub-standard. We have some lab test results of finished biodiesel made here in Japan in a $70,000 commercial processor, washed and dried, and then it was centrifuged, and samples sent to the lab of the centrifuged stuff, but it didn't come close to standard spec. (Our biodiesel is standard spec though.) That's about biodiesel, but the same should apply to SVO use. If you use good quality waste oil there's no need to filter it, settling works better. Re filtering vs settling, see: http://www.mail-archive.com/biofuel@sustainablelists.org/msg62219.html http://www.mail-archive.com/biofuel@sustainablelists.org/msg62233.html http://www.mail-archive.com/biofuel@sustainablelists.org/msg62260.html http://www.mail-archive.com/biofuel@sustainablelists.org/msg62294.html As for the 10,000 miles, that's not very much in the life of a diesel motor. As Todd says, nothing's ever broken till it breaks. Best wishes Keith Thanks for listening Bud - Original Message - From: mailto:[EMAIL PROTECTED]Aaron Wagner To: mailto:biofuel@sustainablelists.orgbiofuel@sustainablelists.org Sent: Friday, July 07, 2006 1:13 PM Subject: [Biofuel] Gov Auction for pressure filter This may be good for cleaning used fryer oil. http://cgi.govliquidation.com/auction/view?id=897708 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Gov Auction for pressure filter
Doug and Jason.
Yes and yes. There is a safe and easy way to build a small centrifuge cause
I did it, and I ain't no rocket scientist, but however, I am a retired
machinist. I operated my own machine shop for many years so I guess that would
give me a leg up. That is one "yes".
The other yes is, not quite ready yet. We have been badly beat about the
head and ears for some directions on building a small centrifuge so we figured
to do something about it,but it will be a month or so before things are
ready to mail out. The centrifuge that I have is capable of cleaning about
gallon per hour, depending on how warm the oil is, and the oil is very clean
with one pass through the machine. If however you want it cleaner, you can run
it a second time and it will be clean enough to put back on the store
shelf.
I don't think I will have anything to send out on line as I'm an old feller
and not to swift on these computers, but we plan to sell the manual with
pictures by snail mail. I don't know how soon I can get the copywrights and
printing done though. I'll let you know as soon as it is available.
Thanks Bud
- Original Message -
From:
Jason Katie
To: biofuel@sustainablelists.org
Sent: Saturday, July 08, 2006 4:38
PM
Subject: Re: [Biofuel] Gov Auction for
pressure filter
yes, i am also interested. we discussed
centrifuge filtering a while ago, and it seemed rather expensive, and required
special equipment. is there a simpler, safe method to build a
centrifuge?
JasonICQ#: 154998177MSN: [EMAIL PROTECTED]
- Original Message -
From:
Doug
Turner
To: biofuel@sustainablelists.org
Sent: Saturday, July 08, 2006 2:09
PM
Subject: Re: [Biofuel] Gov Auction for
pressure filter
Hi
Bud,
Do
you have any details about constructing your centrifuge available
online?
Thanks, one of many Dougs here.
-Original Message-From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]On Behalf Of Bud
Lois PittsSent: July 8, 2006 12:49 AMTo: biofuel@sustainablelists.orgSubject:
Re: [Biofuel] Gov Auction for pressure filter
Aaron, My name is Bud and I'm new to this forum so I hope you
folks can give a little slack if I get out of line.
I have been using WVO for some time and had a lot of problems getting
all of the junk out, but water was the biggest trouble. I tried
filters, heating and settling and re-filtering with very little sucess.
One day I was talking to a friend and he kept saying "centrifuge". So I
did some reseach, asked a lot of question, some real deep thinking and
desided to build a small centrifuge and thenall of the problem were
gone. Now it's just a one function process. All that is needed is to use a
fine kitchen screen as I pourthe oilinto the machine, warm it
up a little and the centrifuge does the rest. It comes out almost as clean
as new. I have been using my centrifuged oil for more than 10,000 miles
and have yet to change my fuel filter. Therefore I don't think filtering
is not the answer.
Thanks for listening
Bud
- Original Message -
From:
Aaron Wagner
To: biofuel@sustainablelists.org
Sent: Friday, July 07, 2006 1:13
PM
Subject: [Biofuel] Gov Auction for
pressure filter
This may be good for cleaning used fryer oil.
http://cgi.govliquidation.com/auction/view?id=897708
___Biofuel
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at Journey to Forever:http://journeytoforever.org/biofuel.htmlSearch
the combined Biofuel and Biofuels-biz list archives (50,000
messages):http://www.mail-archive.com/biofuel@sustainablelists.org/
___Biofuel mailing
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at Journey to
Forever:http://journeytoforever.org/biofuel.htmlSearch the
combined Biofuel and Biofuels-biz list archives (50,000
messages):http://www.mail-archive.com/biofuel@sustainablelists.org/
No virus found in this incoming message.Checked by AVG Free
Edition.Version: 7.1.394 / Virus Database: 268.9.9/382 - Release Date:
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Re: [Biofuel] Gov Auction for pressure filter
what if you dont use it in the final separation of glyc/ffa? wouldnt it be faster to spin out the chunks and as much water as possible after collection and before storage of WVO? it wouldnt be a cleaning per se, just another step of preparation. maybe not any real use for a 20 gallon batch setup but if you were collecting large amounts of WVO for a coop and needed to maximize storage it would be handy. Jason ICQ#: 154998177 MSN: [EMAIL PROTECTED] - Original Message - From: Keith Addison [EMAIL PROTECTED] To: biofuel@sustainablelists.org Sent: Saturday, July 08, 2006 7:33 PM Subject: Re: [Biofuel] Gov Auction for pressure filter Hello Bud, Aaron Aaron, My name is Bud and I'm new to this forum so I hope you folks can give a little slack if I get out of line. I have been using WVO for some time and had a lot of problems getting all of the junk out, but water was the biggest trouble. I tried filters, heating and settling and re-filtering with very little sucess. One day I was talking to a friend and he kept saying centrifuge. So I did some reseach, asked a lot of question, some real deep thinking and desided to build a small centrifuge and then all of the problem were gone. Now it's just a one function process. All that is needed is to use a fine kitchen screen as I pour the oil into the machine, warm it up a little and the centrifuge does the rest. It comes out almost as clean as new. I have been using my centrifuged oil for more than 10,000 miles and have yet to change my fuel filter. Therefore I don't think filtering is not the answer. No, but neither is a centrifuge, much. IMHO they're both answers to the wrong question, or at least to an incomplete question, based on the idea that suspended particles and water are the only aspects of fuel quality. Most of the Straight Vegetable Oil world seems to have a strange idea of fuel quality control - filter, filter, filter. Same with a centrifuge - basically, filter it better. Often they filter it down to 0.5 microns, though the specified final fuel filter might be only 10 microns. But what about the contaminants that filtering won't remove? For instance what's the acid value of your oil, Bud? Before and after centrifuging? A lot of SVO people go for SVO instead of biodiesel in the first place because they don't want to learn how to titrate the oil (and to avoid all those poisonous chemicals). But if you're going to have an idea of the quality of the waste oil you're using as fuel you have to titrate it anyway. The only existing quality standard for SVO is the German Quality Standard for Rapeseed Oil as a Fuel (RK-Qualitätsstandard), which specifies an Acid Value of 2.0 mg KOH/g. This is the Free Fatty Acid (FFA) content. Elsbett Technologie says it can affect the lube oil, the Fuel Injection Equipment Manufacturers (Delphi, Stanadyne, Denso, Bosch) say FFA corrodes fuel injection equipment and leaves sediments on parts. An examination of the defective sections found substantial surface erosion of the hardened steel high pressure parts, which are not acid-proof. The problem was traced to a supply of soy oil which was not the usual food-grade oil and had a high acid content. -- BioCar (German page): http://biocar.de/info/warnung1.htm FFA isn't removed by filtering, I doubt it will all be removed by centrifuge. The way to tell how much FFA your oil contains is to titrate it. New, unused SVO is the best oil to use. See German PPO fuel standard: Quality Standard for Rapeseed Oil as a Fuel. Good quality WVO can be used (though see kit supplier's warranty). Oil quality of WVO is best checked with the titration test used in making biodiesel to determine the Free Fatty Acid (FFA) content of the oil. The lower the titration result the better the quality. It's often said that oil titrating at more than 3.5 ml 0.1% NaOH solution should be processed into biodiesel rather than used with a Straight Vegetable Oil system. More than that and the oil will be too acidic and will probably contain water, both of which can damage the fuel system, and the water might not be easy to boil off. We think a limit of 3.5 ml of NaOH solution is too high, we set it lower, at 2.0 ml at the most. After all, there are standards for diesel fuel and for biodiesel fuel, as there should be, but not for SVO -- except for the German PPO fuel standard, which excludes WVO altogether. Use high-quality oil. With experience you can tell quite a lot about the quality of oil from its appearance, colour and smell, but you still can't be sure. Someone we know who fitted an Elsbett single-tank SVO system to his VW Golf was careful to use oil only from the works cafetaria at his job, where the manager had assured him it was pure, high-quality vegetable oil. We weren't so sure so we titrated it for him. He was shocked by the result -- it titrated at 8.5 ml of NaOH solution, bad oil! Much too acidic to use for SVO and it had a high water content, difficult to remove. Don't
Re: [Biofuel] Gov Auction for pressure filter
what if you dont use it in the final separation of glyc/ffa? wouldnt it be faster to spin out the chunks and as much water as possible after collection and before storage of WVO? it wouldnt be a cleaning per se, just another step of preparation. maybe not any real use for a 20 gallon batch setup but if you were collecting large amounts of WVO for a coop and needed to maximize storage it would be handy. What for Jason? Superfluous. Use good oil and settle it. Best Keith Jason ICQ#: 154998177 MSN: [EMAIL PROTECTED] - Original Message - From: Keith Addison [EMAIL PROTECTED] To: biofuel@sustainablelists.org Sent: Saturday, July 08, 2006 7:33 PM Subject: Re: [Biofuel] Gov Auction for pressure filter Hello Bud, Aaron Aaron, My name is Bud and I'm new to this forum so I hope you folks can give a little slack if I get out of line. I have been using WVO for some time and had a lot of problems getting all of the junk out, but water was the biggest trouble. I tried filters, heating and settling and re-filtering with very little sucess. One day I was talking to a friend and he kept saying centrifuge. So I did some reseach, asked a lot of question, some real deep thinking and desided to build a small centrifuge and then all of the problem were gone. Now it's just a one function process. All that is needed is to use a fine kitchen screen as I pour the oil into the machine, warm it up a little and the centrifuge does the rest. It comes out almost as clean as new. I have been using my centrifuged oil for more than 10,000 miles and have yet to change my fuel filter. Therefore I don't think filtering is not the answer. No, but neither is a centrifuge, much. IMHO they're both answers to the wrong question, or at least to an incomplete question, based on the idea that suspended particles and water are the only aspects of fuel quality. Most of the Straight Vegetable Oil world seems to have a strange idea of fuel quality control - filter, filter, filter. Same with a centrifuge - basically, filter it better. Often they filter it down to 0.5 microns, though the specified final fuel filter might be only 10 microns. But what about the contaminants that filtering won't remove? For instance what's the acid value of your oil, Bud? Before and after centrifuging? A lot of SVO people go for SVO instead of biodiesel in the first place because they don't want to learn how to titrate the oil (and to avoid all those poisonous chemicals). But if you're going to have an idea of the quality of the waste oil you're using as fuel you have to titrate it anyway. The only existing quality standard for SVO is the German Quality Standard for Rapeseed Oil as a Fuel (RK-Qualitätsstandard), which specifies an Acid Value of 2.0 mg KOH/g. This is the Free Fatty Acid (FFA) content. Elsbett Technologie says it can affect the lube oil, the Fuel Injection Equipment Manufacturers (Delphi, Stanadyne, Denso, Bosch) say FFA corrodes fuel injection equipment and leaves sediments on parts. An examination of the defective sections found substantial surface erosion of the hardened steel high pressure parts, which are not acid-proof. The problem was traced to a supply of soy oil which was not the usual food-grade oil and had a high acid content. -- BioCar (German page): http://biocar.de/info/warnung1.htm FFA isn't removed by filtering, I doubt it will all be removed by centrifuge. The way to tell how much FFA your oil contains is to titrate it. New, unused SVO is the best oil to use. See German PPO fuel standard: Quality Standard for Rapeseed Oil as a Fuel. Good quality WVO can be used (though see kit supplier's warranty). Oil quality of WVO is best checked with the titration test used in making biodiesel to determine the Free Fatty Acid (FFA) content of the oil. The lower the titration result the better the quality. It's often said that oil titrating at more than 3.5 ml 0.1% NaOH solution should be processed into biodiesel rather than used with a Straight Vegetable Oil system. More than that and the oil will be too acidic and will probably contain water, both of which can damage the fuel system, and the water might not be easy to boil off. We think a limit of 3.5 ml of NaOH solution is too high, we set it lower, at 2.0 ml at the most. After all, there are standards for diesel fuel and for biodiesel fuel, as there should be, but not for SVO -- except for the German PPO fuel standard, which excludes WVO altogether. Use high-quality oil. With experience you can tell quite a lot about the quality of oil from its appearance, colour and smell, but you still can't be sure. Someone we know who fitted an Elsbett single-tank SVO system to his VW Golf was careful to use oil only from the works cafetaria at his job, where the manager had assured him it was pure, high-quality vegetable oil. We weren't so sure so we titrated it for him. He was shocked by the result -- it titrated at 8.5 ml of NaOH
[Biofuel] Gov Auction for pressure filter
This may be good for cleaning used fryer oil. http://cgi.govliquidation.com/auction/view?id=897708 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
