Re: HTP Production

>For those working this project, can you give me an estimate of what it 
>would take to get you into full-scale production suitable for 
>experimenters?  I'm working on a project to reproduce the successful 
HTP 
>engines developed by the British in the early fifties (working with 
one 
>of the developers), so our consumption of 80-85% HTP would be fairly 
>substantial ( typical of a 5,000-8,000 lbf HTP bipropellant engine).
>
>The idea would be to provide funding for your production effort by 
>"pre-ordering" a supply of HTP under contract in exchange for being a 
>priority customer.  I have a funding source with a modest amount of 
>funds I believe sufficient for your needs.

Since I am located in Canada I can not supply you anyway.  The system I 
am considering building will be able to make between 10-25 liters of 80
-85% HTP a day from 35% stock.  This system just concentrates the 
peroxide so you need to start with a clean stock in the first place.  I 
project my material costs to be less than $2000 CDN.  However, this is 
just the tip of the iceberg for HTP production.  Even after years of 
trying I am still getting a cold shoulder the producers of peroxide and 
have to buy thru middle men.  This raises the cost of stock by a huge 
amount.  You also have to deal with zoning laws and local storage 
regulations.  Basicly, it can turn into a real mess - be careful or you 
may find you have an illegal operation that can result in big fines, 
maybe jail time.  Not trying to stop you but as far as I know no-one is 
building a simple machine that you just plug in, pour peroxide in and 
HTP comes out.  There use to be such a design but it no longer exists.

I have not come up with a design yet that I really like for the 
production of clean HTP from a stablized stock.  There are large number 
of things to go wrong once you start dealing with a HTP vapour, the 
number of explosions in the past has also made me leary of publicly 
discussing designs ideas.  You may consider contacting the author of 
http://www.peroxidepropulsion.com/ who uses ion exchange to clean up 
his peroxide.

            Earl Colby Pottinger