On Sun, 7 Dec 2003 19:13:41 +0100, "John H. Dom" <[EMAIL PROTECTED]> wrote:
>I never heard of any chemical plant using (even state-of-the-art) column >crystallizers to enrich HP. >They use vacuum distillation. Without exception. Why? Because it is less >complicated. 98% HP is quite possible. The big guys have enough staff and safety equipment to take the significant risk associated with vacuum distillation of peroxide. Amateurs and small operators don't have that luxury. Remember, whatever process is used must above all else be safe: if you have an accident, you lose your expensive equipment. Safety, for amateurs and small operators, means keeping the temperature down. That means rotary evaporators (what XL used IIRC), spargers, and freezers. Used sensibly, these devices can't - not won't, but can't - foster a peroxide vapor detonation. Anything can foster a BLEVE, of course. -R -- LSO to pilot after 6th bolter, "You have to land here, son. This is where the food is." _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
