|
|
| Author |
Message |
Radium
science forum Guru Wannabe
Joined: 15 Dec 2005
Posts: 241
|
 Posted: Mon Jun 26, 2006 2:07 am Post subject:
Please forgive my repost -- Anthracite's Aromatic Compounds Smell Like Paradise
|
|
|
Sorry for the re-post
luca...@sbcglobal.net wrote:
| Quote: | "Jo Schaper" <joschapern4os...@2socketdot.no5net> wrote in message
news:12987le206g0aee@corp.supernews.com...
Salmon Egg wrote:
On 6/16/06 12:28 PM, in article
1150486125.214671.56...@u72g2000cwu.googlegroups.com, "Radium"
gluceg...@excite.com> wrote:
I would like to know what
exactly makes up the the volatiles in coal. What are the volatile
compounds in coal? Where can I find pure coal smoke?
I don't know about you all, but in my part of the world, what you smell
when you burn the coal are a whole slew of sulfur compounds, including
hydrogen sulfide, or 'rotten eggs'.
Some of the rural areas of WV, where NG is not readily available and many
folks have coal stoves, burning coal smoke in the winter smells to me mostly
like aromatic organic compounds.
|
I love this smell.
| Quote: | Coal tar distillates (the volatiles that
distill from coal on thermal processing, such as burning) include a large
number of relatively simple aromatic compounds (toluene and other
substituted benzenes), hetero-substituted aromatic compounds (substituted
pyridines, anilines, phenols), and polycyclic aromatic compounds
(naphthalenes, anthracenes, phenanthrenes, pyrenes, etc.)
|
Yes. The above compounds are included in the countless long list of
chemicals that give anthracite its heavenly flavor.
| Quote: | I never really
smell much of a sulfur smell, just these aromatics, even though I'm pretty
sure WV coal is high-sulfur. The smoke does tend to burn my eyes; I suppose
that could be the SO2 or H2SO3 talking.
These are not the type of compounds I would be eager to eat.
Eric Lucas |
|
|
| Back to top |
|
 |
John Kepler
science forum beginner
Joined: 26 Jun 2006
Posts: 2
|
| Posted: Mon Jun 26, 2006 10:07 am Post subject:
Re: Please forgive my repost -- Anthracite's Aromatic Compounds Smell Like Paradise
|
|
|
| Quote: |
Yes. The above compounds are included in the countless long list of
chemicals that give anthracite its heavenly flavor.
|
Anthracite has almost NO volatile compounds (rough general analysis is 90%
fixed carbon, less than 4% vol). Bituminous coal is upwards of 50%
vol....that's where all the interesting chemistry comes from! Hard coal
burns more like coke than soft-coal, with little or no smoke and/or odor (do
a Google search on "Phoebe Snow".....ignore anything about the singer!).
| Quote: |
I never really
smell much of a sulfur smell, just these aromatics, even though I'm
pretty
sure WV coal is high-sulfur.
|
Depends on what and where in WV. If you're in McDowell or Boone Counties,
and the coal is a #3 or #4 Pocahontas Seam product....then the sulfur is
less than 0.5%. If you're in Marion County and the coal is a Pittsburgh
Seam product, the sulfur can be over 2%. The Pokey will also burn
differently than the Pittsburgh, since the Pokey is a high-rank Low-Vol Met
Coal, and the Pittsburgh is a mid-rank High-Vol Thermal Coal.
John |
|
| Back to top |
|
|
Radium
science forum Guru Wannabe
Joined: 15 Dec 2005
Posts: 241
|
| Posted: Mon Jun 26, 2006 3:22 pm Post subject:
Re: Please forgive my repost -- Anthracite's Aromatic Compounds Smell Like Paradise
|
|
|
John Kepler wrote:
| Quote: |
Yes. The above compounds are included in the countless long list of
chemicals that give anthracite its heavenly flavor.
Anthracite has almost NO volatile compounds (rough general analysis is 90%
fixed carbon, less than 4% vol). Bituminous coal is upwards of 50%
vol....that's where all the interesting chemistry comes from! Hard coal
burns more like coke than soft-coal, with little or no smoke and/or odor (do
a Google search on "Phoebe Snow".....ignore anything about the singer!).
|
Is it the bitumens that give coal its smell?
| Quote: | I never really
smell much of a sulfur smell, just these aromatics, even though I'm
pretty
sure WV coal is high-sulfur.
Depends on what and where in WV. If you're in McDowell or Boone Counties,
and the coal is a #3 or #4 Pocahontas Seam product....then the sulfur is
less than 0.5%. If you're in Marion County and the coal is a Pittsburgh
Seam product, the sulfur can be over 2%. The Pokey will also burn
differently than the Pittsburgh, since the Pokey is a high-rank Low-Vol Met
Coal, and the Pittsburgh is a mid-rank High-Vol Thermal Coal.
John |
|
|
| Back to top |
|
|
<lucasea@sbcglobal.net
science forum addict
Joined: 25 Mar 2006
Posts: 94
|
| Posted: Mon Jun 26, 2006 3:56 pm Post subject:
Re: Please forgive my repost -- Anthracite's Aromatic Compounds Smell Like Paradise
|
|
|
"John Kepler" <jekepler@amplex.net> wrote in message
news:449fb1df_1@nntp2.nac.net...
| Quote: | Depends on what and where in WV. If you're in McDowell or Boone Counties,
and the coal is a #3 or #4 Pocahontas Seam product....then the sulfur is
less than 0.5%. If you're in Marion County and the coal is a Pittsburgh
Seam product, the sulfur can be over 2%. The Pokey will also burn
differently than the Pittsburgh, since the Pokey is a high-rank Low-Vol
Met Coal, and the Pittsburgh is a mid-rank High-Vol Thermal Coal.
|
Interesting info. I usually think of WV coal as high-sulfur, and I forget
that there are significant differences even within the state. This was in
Charleston, so I suspect it was from the southern coalfields. It's a pretty
small market, since most homes in the Charleston/Huntington corridor have
nat. gas, but a very few still burn coal in the depths of winter. It may be
that even some folks who have nat. gas also supplement with coal, similar to
a wood stove to keep a single room warm.
Eric Lucas |
|
| Back to top |
|
|
Jo Schaper
science forum beginner
Joined: 27 Jan 2006
Posts: 14
|
| Posted: Mon Jun 26, 2006 8:18 pm Post subject:
Re: Please forgive my repost -- Anthracite's Aromatic Compounds Smell Like Paradise
|
|
|
lucasea@sbcglobal.net wrote:
| Quote: | "John Kepler" <jekepler@amplex.net> wrote in message
news:449fb1df_1@nntp2.nac.net...
Depends on what and where in WV. If you're in McDowell or Boone Counties,
and the coal is a #3 or #4 Pocahontas Seam product....then the sulfur is
less than 0.5%. If you're in Marion County and the coal is a Pittsburgh
Seam product, the sulfur can be over 2%. The Pokey will also burn
differently than the Pittsburgh, since the Pokey is a high-rank Low-Vol
Met Coal, and the Pittsburgh is a mid-rank High-Vol Thermal Coal.
Interesting info. I usually think of WV coal as high-sulfur, and I forget
that there are significant differences even within the state. This was in
Charleston, so I suspect it was from the southern coalfields. It's a pretty
small market, since most homes in the Charleston/Huntington corridor have
nat. gas, but a very few still burn coal in the depths of winter. It may be
that even some folks who have nat. gas also supplement with coal, similar to
a wood stove to keep a single room warm.
Eric Lucas
|
Slightly OT, but you need to look into modern wood stoves. They easily
heat whole houses comfortably these days, with high efficiencies, low
emissions (assuming you use decent dry wood) and no more middle of the
night firings.
My grandpa had a coal furnace to heat a shotgun or railroad style flat,
and that house was mondo toasty until the city made him convert to oil. |
|
| Back to top |
|
|
John Kepler
science forum beginner
Joined: 26 Jun 2006
Posts: 2
|
| Posted: Tue Jun 27, 2006 10:33 am Post subject:
Re: Please forgive my repost -- Anthracite's Aromatic Compounds Smell Like Paradise
|
|
|
| Quote: | Is it the bitumens that give coal its smell?
|
More or less....or rather the incomplete combustion of same! The "smell"
most associated with "burning coal" are the light aromatic fractions of the
vol....primarily "TBX" (toluene-benzene-xylene) being driven off and only
partially burned due to insufficient oxygen/insufficient residence time in a
stove. Your local coal-fired power plant burns coal in air-suspension by
the megaton...and doesn't make ANY of the "coal burning" smell you note in a
residential stove! FWIW, the smell I most associate with Beijing is lousy
coal burning.....makes a "holler" in WV seem tame by comparison!
John |
|
| Back to top |
|
|
Google
|
|
| Back to top |
|
|
|
|
The time now is Sat Jan 10, 2009 3:04 am | All times are GMT
|
|
Loans | Fast Loans | Old Navy Coupon | Online Advertising | MPAA
|
|
Copyright © 2004-2005 DeniX Solutions SRL
|
|
Other DeniX Solutions sites:
Electronics forum |
Medicine forum |
Unix/Linux blog |
Unix/Linux documentation |
Unix/Linux forums
|
Powered by phpBB © 2001, 2005 phpBB Group
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Forum index
»
Science and Technology
»
Chem
