Something in the corner of MY mind, where my little bit of chem-knoledge resides, tells me that CaO is not the best stuff to dry esters. Yes: CaO and HCl will produce water and CaCl2, but in a hydrated form. Probably you could dehydrate the salt (after filtering and evaporating water), by calcination, but this is an area I don«t know much of, and at high temperatures (I«m talking of a closed crucible over direct fire) I don«t know if the substance would decompose in some way.
Someone mentioned to me the other day (I think I recall having mntioned this on a post some days ago) that CaCl could interfere with traces of methanol surely present in the BD. I«m still working on the water issue, as I«ve personally got some problems here, with water contents of up to 2000 ppm (0,2 % vol) in my BD. A simple solution seems to be to filter through very dry filter paper. Dry paper should absorb water quite well (in my case, it worked well with emulsified water in the final washing stage, removing the water content that impeded the BD from being totally tranparent). It could work for dissolved water too. Regards, Christian. ----- Original Message ----- From: "Gobert" <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Thursday, June 13, 2002 7:50 PM Subject: Re: [biofuel] How to make calcium chloride? > > ----- Original Message ----- > From: "agroefekta" <[EMAIL PROTECTED]> > To: <biofuel@yahoogroups.com> > Sent: Thursday, June 13, 2002 7:56 PM > Subject: [biofuel] How to make calcium chloride? > > > > I have read some time before that CaCl2 can be used to "dry" alcohols > > as well as esters. > > I am not good in chemistry, but believe that reaction of CaO and HCl > > can produce CaCl 2. > > Im my country there are many manufacturers of Cao, so I could make it > > quite easy. > > > > One more question. Can this salt be recovered after it has been used > > for dehidration? > > > agroefekta, Calcium chloride for chemical drying is usually used in the > form of fused pellets. Could take quite a bit of energy to get it to that > state. > CaO is a very good drying agent, It could be used by itself to "dry" > alcohols but the reaction might be a bit vigorous, would suggest try it in > small ammounts with caution. > Something in the back of my mind where my limited chemical knowledge resides > tells me that it may not be such a good idea from the safety point of view. > Regards, Paul Gobert. > > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.370 / Virus Database: 205 - Release Date: 5/06/02 > > > > 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/ > > ______________________________________________________________________________ mensaje enviado desde http://www.iespana.es emails (pop)-paginas web (espacio ilimitado)-agenda-favoritos (bookmarks)-foros -Chat ------------------------ Yahoo! Groups Sponsor ---------------------~--> Will You Find True Love? Will You Meet the One? Free Love Reading by phone! http://us.click.yahoo.com/Deo18C/zDLEAA/Ey.GAA/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/
