Thanks Marc for your contribution with this "oldtimer". If you can scan the relevant pages, I«ll appreciate it very much. Regards. Ricardo Tournier
----- Original Message ----- From: F. Marc de Piolenc <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Thursday, May 10, 2001 12:36 AM Subject: [biofuel] Glycerin and absolute alcohol > All the recent traffic about glycerol and about absolute alcohol was > making my brain itch - I had seen something, somewhere that actually > tied those two things together. > > Here it is, from E. Boullanger: Distillerie Agricole et Industrielle > (Paris: Ballire, 1924), translated rather freely from the French: > > "But according to Mr. Mariller, the use of water-adsorbing substances > instead of alcohol adsorbing substances [for separating alcohol/water > mixtures by adsorption] must necessarily be more economical, for with > alcohol-adsorbents water, the third substance [adsorbent] and the > alcohol/ substance mixture must be evaporated and the mixture > subsequently fractionated to recover pure alcohol. This results in > additional vaporization which penalizes the overall cost of the method. > Contrarily, with water adsorbents, only water and a little entrained > alcohol (if any) must be subsequently vaporized; steam consumption then > falls to 30 kg per hectoliter of alcohol, or approximately frs 0.40 at > the current [1924] price of coal. > > These considerations led Mr. Mariller to his absolute alcohol production > process by dehydration using glycerine. Alcoholic vapors passing through > pure glycerine yield 99.2” alcohol directly, and merely adding potassium > carbonate, for example, to the glycerine is sufficient for easily > obtaining 99.8”. The glycerine and the salt that it holds in solution > are regenerated and returned to the circuit." > > It goes on to describe in detail the Mariller-Granger process and the > apparatus used in it. If this is of interest to anybody, I will continue > the translation, or simply scan the relevant pages for any francophone > out there. > > It has not escaped me that this information begs the question of how to > obtain glycerine of sufficient purity in the first place. Obviously, > further research is needed. If we're lucky, the impurities in the crude > glycerine from ethyl ester production will be benign. and the crude > stock will thus be usable in alcohol production as is. If not, perhaps > only one impurity that can be easily removed is a problem. Perhaps... > > Best to all, > Marc de Piolenc > Iligan, Philippines > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
