iandol on sat 6 sep 03
Dear Friends,
Anyone out there who has access to good information?
What is the Flash Point of Carbon Monoxide? That is, what temperature is =
necessary to cause spontaneous ignition?
Best regards,
Ivor Lewis. Redhill, South Australia=20
Earl Krueger on sun 7 sep 03
On Friday, September 5, 2003, at 11:12 PM, iandol wrote:
> What is the Flash Point of Carbon Monoxide? That is, what temperature
> is necessary to cause spontaneous ignition?
Ivor,
According to:
"Handbook of Chemistry and Physics 43rd Edition 1961-1962"
The Chemical Rubber Publishing Company
Ignition temperature of CO in air: 644-658 degrees C.
My interpretation of this is that once a kiln reaches 650C (1200F)
and there is plenty of oxygen in the kiln the CO should react to
form CO2. Would you agree?
Another interesting question since CO is inflammable is:
"What concentrations in air are explosive mixtures?"
ibid:
Lower limit 12.5%; Upper limit 71.2%
Since it would be highly unlikely that an electric kiln could produce
a concentration of 12.5% CO I don't think explosions should be
of concern. However, a fuel operated kiln in heavy reduction is
another matter. I could see the possibility exists there.
Earl...
Louis Katz on sun 7 sep 03
This was such a good question I did a search on the web googled burn
carbon monoxide air flash point
This link:
http://www.ilo.org/public/english/protection/safework/cis/products/
icsc/dtasht/_icsc00/icsc0023.pdf
listed an Auto-ignition temp of 605 degrees C.
This link: http://www.net-safety.com/html/industry_info/hazloc.htm
lists LEL and UEL (upper and lower explosive limits) for a variety of
gases, including CO. It does not list a flashpoint for CO instead it
says "gas".
This site lists an ignition temperature of 570 degress C
In thinking about this I remember the definition.
As I understand Flashpoints there are the temperature at which the
gases evaporating from a heated LIQUID with catch fire. Since CO is a
gas at common temperature and pressure it has no flashpoint.
By the way if you want to see why hydrogen and acetylene are so
explosive and dangerous look at the LEL and UEL for them.
Louis
On Saturday, September 6, 2003, at 01:12 AM, iandol wrote:
> Dear Friends,
> Anyone out there who has access to good information?
> What is the Flash Point of Carbon Monoxide? That is, what temperature
> is necessary to cause spontaneous ignition?
>
> Best regards,
> Ivor Lewis. Redhill, South Australia
>
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