Re: [biofuel] Reclaiming the methanol
Paul, a filled reflux column will achieve a vapor separation, by managing the temperature at the top of the column the lowest boiling point substance may be extracted as a vapor for recovery in the condenser. By raising the temperature, sequential separation of a volatile mixture is possible. Overkill for methanol. A simple distillation below 90C should give good separation from water. A reflux condenser may yield 170 proof ethanol or better from beer, any methanol will separate before the ethanol(in case you want to drink it). Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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] Reclaiming the methanol
- Original Message - Methanol is extremely soluble but a reflux condenser should give a good yield. Beyond that the methods cited for drying ethanol should apply. Harry in Oz. Harry, reflux condensation is in effect a closed system whereby the products of distillation are returned to the reaction vessel. It is used where the desired reaction temperature is above the boiling point of the reactant mixture. Condensor is usually mounted vertically above reaction vessel so that condensate drains back into reaction vessel. Paul Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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] Reclaiming the methanol
Methanol is extremely soluble but a reflux condenser should give a good yield. Beyond that the methods cited for drying ethanol should apply. Harry in Oz. Thankyou Harry. Hey, I got all the answers I wanted! Great! Thanks one and all. Best Keith Addison Journey to Forever Handmade Projects Tokyo http://journeytoforever.org/ Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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] Reclaiming the methanol
Keith Addison asks: A biodiesel question. If you boil off and distill the excess methanol from the glycerine for re-use, is it in fact suitable for re-use? Won't it be too wet? I don't even know if water dissolves in methanol. If so, does methanol have the same or similar upper-limit azeotropic restriction for distillation as ethanol does? Sure, you get rid of the water in the oil first, but some water is released during the transesterification, and it'll be in the glycerine along with excess meths. Methanol and water do not form an azeotrope, and therefore are completely separable, at least theoretically, by fractional distillation alone. I don't think you're right about water being produced in the transesterification reaction (it IS produced by the saponification of free fatty acid, but that is supposed to be minimal). Even if there is some water there, fractional or a few simple distillations will clean it all out.-K Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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] Reclaiming the methanol
Keith Addison asks: A biodiesel question. If you boil off and distill the excess methanol from the glycerine for re-use, is it in fact suitable for re-use? Won't it be too wet? I don't even know if water dissolves in methanol. If so, does methanol have the same or similar upper-limit azeotropic restriction for distillation as ethanol does? Sure, you get rid of the water in the oil first, but some water is released during the transesterification, and it'll be in the glycerine along with excess meths. Methanol and water do not form an azeotrope, and therefore are completely separable, at least theoretically, by fractional distillation alone. I don't think you're right about water being produced in the transesterification reaction (it IS produced by the saponification of free fatty acid, but that is supposed to be minimal). Even if there is some water there, fractional or a few simple distillations will clean it all out.-K Thankyou Ken, sweetness and light duly restored. Seems some water is released though. Doesn't seem to matter a lot if you do it right. Thanks again Keith Addison Journey to Forever Handmade Projects Tokyo http://journeytoforever.org/ Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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] Reclaiming the methanol
Methanol is extremely soluble but a reflux condenser should give a good yield. Beyond that the methods cited for drying ethanol should apply. Harry in Oz. Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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] Reclaiming the methanol
A biodiesel question. If you boil off and distill the excess methanol from the glycerine for re-use, is it in fact suitable for re-use? Won't it be too wet? I don't even know if water dissolves in methanol. If so, does methanol have the same or similar upper-limit azeotropic restriction for distillation as ethanol does? Sure, you get rid of the water in the oil first, but some water is released during the transesterification, and it'll be in the glycerine along with excess meths. TIA Best Keith Addison Journey to Forever Handmade Projects Tokyo http://journeytoforever.org/ Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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/
