Re: [biofuel] acid stage question
Hello to all. Question: If wvo is dried by boiling off water, can the acid stage be undertaken once oil temp. falls below boiling point of methanol? Does higher temp. affect esterification in any positive or negative way? Bill C. Hello Bill Should be no problem. It's quite adaptable, but it's recommended that you get familiar with the standardized process first, according to Aleks's instructions. Then you have a solid baseline to work from in adapting it. One step at a time. I said this in an earlier message: One point on energy use in comparing the two main dewatering methods is that heating to 60-70 deg C and settling loses the heat, whereas with boiling it off, while using lots of energy, you can at least catch it on the way down and start processing the oil once it's cooled to 55 deg C, saving some of the extra energy. But more heat carries the danger of creating more FFAs, which adds to boiling being the less preferred method. It depends on the oil - will you always be working with the same oil? Three possibilities: nice oil, no need for dewatering; heat to 60¡C and settle for 24 hours, draw from the top; boil the water off. We do all three of those at various times. From another previous message: It seems heating to 60¡C and settling to separate water either works or it doesn't. Some people swear by it, others have no success. It may be due to the presence of animal fats in heavily used oils, which can be very difficult to remove the water content from. We've had mixed results. With oil from a new source we heat a sample to 100¡C to dewater (if any) and then process, then try the same with 60¡C and settling. (Or not if boiling shows there wasn't any water.) Best wishes Keith Yahoo! Groups Sponsor -~-- Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/CNxFAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] acid stage question
Thanks Keith, I got 35 deg. C and 55 deg. C mixed up. Your earlier post makes more sense to me now. Another question is, would raising the pressure in the processor also raise the temp. at which I could begin stage one processing? Thanks for your help. Bill C. - Original Message - From: Keith Addison [EMAIL PROTECTED] To: biofuel@yahoogroups.com Sent: Thursday, May 29, 2003 3:20 AM Subject: Re: [biofuel] acid stage question Hello to all. Question: If wvo is dried by boiling off water, can the acid stage be undertaken once oil temp. falls below boiling point of methanol? Does higher temp. affect esterification in any positive or negative way? Bill C. Hello Bill Should be no problem. It's quite adaptable, but it's recommended that you get familiar with the standardized process first, according to Aleks's instructions. Then you have a solid baseline to work from in adapting it. One step at a time. I said this in an earlier message: One point on energy use in comparing the two main dewatering methods is that heating to 60-70 deg C and settling loses the heat, whereas with boiling it off, while using lots of energy, you can at least catch it on the way down and start processing the oil once it's cooled to 55 deg C, saving some of the extra energy. But more heat carries the danger of creating more FFAs, which adds to boiling being the less preferred method. It depends on the oil - will you always be working with the same oil? Three possibilities: nice oil, no need for dewatering; heat to 60¡C and settle for 24 hours, draw from the top; boil the water off. We do all three of those at various times. From another previous message: It seems heating to 60¡C and settling to separate water either works or it doesn't. Some people swear by it, others have no success. It may be due to the presence of animal fats in heavily used oils, which can be very difficult to remove the water content from. We've had mixed results. With oil from a new source we heat a sample to 100¡C to dewater (if any) and then process, then try the same with 60¡C and settling. (Or not if boiling shows there wasn't any water.) Best wishes Keith Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Yahoo! Groups Sponsor -~-- Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/CNxFAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
[biofuel] acid stage question
Hello to all. Question: If wvo is dried by boiling off water, can the acid stage be undertaken once oil temp. falls below boiling point of methanol? Does higher temp. affect esterification in any positive or negative way? Bill C. Yahoo! Groups Sponsor -~-- Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/CNxFAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] acid stage question
Yes and yes. In a positive way. Todd Swearingen - Original Message - From: William Clark [EMAIL PROTECTED] To: biofuel@yahoogroups.com Sent: Wednesday, May 28, 2003 8:42 PM Subject: [biofuel] acid stage question Hello to all. Question: If wvo is dried by boiling off water, can the acid stage be undertaken once oil temp. falls below boiling point of methanol? Does higher temp. affect esterification in any positive or negative way? Bill C. Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Yahoo! Groups Sponsor -~-- Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/CNxFAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
