35 replies to this topic

[digger]

I think this quote from Davis sums things up nicely.

 

"The products of the burning of black powder have been studied by a number of investigators, particularly by Noble and Abel, who showed that the burning does not correspond to any simple chemical reaction between stoichiometrical proportions of the ingredients."

 

If you look at the analysis of the burning mixture in Davis, something sort of interesting is noticed.  Of the solid products (55.91% of all combustion products), 8.74% is sulfur.  This means approximately 50% of the sulfur in the formula is ultimately unutilized. 

 

If anyone in charge here would like to check, I'd be happy to provide my collection of known IP addresses used by Anyka, Ushie, etc. 

 

I agree this is a fair analysis, and that was my point that simple stoichiometry can't easily be used to define the reaction. Thank you for the suitable quote.

[Crazy Cat]

I'll respond to the combustion of black powder, in finite detail as time permits, with all stoichiometrical formula, thermodynamics, and more.

I'm about 1/3 finished, and now the world cup has ended, I'll be devoting more time.

I'm putting a calculations spreadsheet with stoichiometrical formula, percent moles, thermodynamics, Gibbs, and more. This will help members here, to alter the input data, and make calculation for their own combustion reactions.

[Arthur Brown]

interestingly several reputed authors say that the reaction stoichiometry varies with the combustion pressure. so what represents a fountain may not represent a shell lift or break.

[Peret]

LOL, I thought the style looked familiar.

 

If anyone in charge here would like to check, I'd be happy to provide my collection of known IP addresses used by Anyka, Ushie, etc. 

[Crazy Cat]

The Chemistry of Fireworks 2nd Edition. Published by The Royal Society of Chemistry.
Michael S. Russell, 2009.

Attached Files

•  The Chemistry of Fireworks (Second Edition) by Michael S Russell.pdf   5.47MB   241 downloads

Edited by Crazy Cat, 29 January 2022 - 11:57 PM.

[SwedishParaCordNut]

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