From time to time I review the analytics behind my blog and notice that I have had a LOT of new traffic. Well, unless you newcomers have been digging back through the archives of 3 years of blogs, you can miss some interesting information. So, occasionally I'll repost something of interest, I hope you enjoy.
Char-coal[2] (chär'kōl') n. 1. A black, porous, carbonaceous material, 85 to 98 percent carbon, produced by the destructive distillation of wood and used as a fuel, filter, and absorbent.
Natural Lump Charcoal comes from partially burning wood created by heating wood without oxygen turning it into nearly 100% carbon. During the process all volatile compounds in the wood (water, hydrogen, methane and tars) pass off as vapors into the air, some of the carbon is consumed as fuel, and the rest of the carbon is converted into charcoal.
Since Charcoal is 100% pure wood carbon, it weights much less than its original state. It is also free of tars (which can contain carcinogenic compounds, like benzo-a-pyrene).
And unless it has
been exposed to moisture and variable temperature, natural lump charcoal will
last literally forever. The low ash
production of lump charcoal is very important. Ceramic grills and Smokers have
a fire bowl holding the charcoal. As the charcoal burns, the ash falls down
into the bottom of the bowl. There isn't room for a whole lot of ash. Lump
charcoal tends to burns hotter and faster than briquettes. Lump charcoal will also burn at whatever rate and temperature that
you allow it to. Briquettes tend
to burn slower as they were designed to be used in an uncontrolled environment.
There are 2 types of charcoals: the first type comes from natural
wood which has been cut and made into charcoal. This is as natural as you can
get. The wood comes from trees, branches and scrap pieces from saw mills. The
second type comes from using processed scrap wood and tuning it into charcoal.
Processed scrap wood tend to burn faster since its density is lesser than
natural. This is mainly because there is less moisture into the wood at the
time it is transformed into charcoals. This wood comes from wood flooring
scraps, building material scrap and furniture scraps and others.[3]
How is
it made today?
In the modern method, wood is raised to a high temperature in an iron retort,
and industrially important byproducts, e.g., methanol (wood alcohol or
wood spirit), acetone , pyroligneous acid , and acetic acid , are saved by
condensing them to their liquid form. Air is not really needed in the
carbonization process, and advanced methods of charcoal production do not allow
air to enter the kiln. This results in a higher yield, since no wood is burned
with the air, and quality is improved. Charcoal is also obtained from
substances other than wood such as nut shells and bark; that obtained from
bones is called bone black, animal black, or animal charcoal.
Charcoal yields a larger amount of heat in proportion to its volume than is
obtained from a corresponding quantity of wood and has the further advantage of
being smokeless. The greatest amount is used as a fuel. Charcoal is often used
in blacksmithing, for cooking, and for other industrial applications. One of
the most important applications of wood charcoal is as a component of gunpowder . It is also used as
a reducing agent in metallurgical operations, but this application was
diminished by the introduction of coke . A limited quantity
is made up into the form of drawing crayon. Bamboo charcoal is the principal
ingredient in sumi-e, a form of Japanese ink painting that uses only black ink
in various concentrations.
Because of its porous structure, finely divided charcoal is a highly efficient
agent for filtering the adsorption of gases and of solids from solution. It is
used in sugar refining, in water purification, in the purification of factory
air, and in gas masks. Wood charcoal can remove coloring agents from solutions,
but this is accomplished more efficiently by animal charcoal. By special
heating or chemical processes the adsorptive property can be greatly increased;
charcoal so treated is known as activated charcoal.
[1] http://www.primogrill.com/charcoal.html, [2] “charcoal.” The American Heritage® Dictionary of the English Language, Fourth Edition, Houghton MIfflin Company, 2004, 03 Apr.2008 and taken from Dictionary.com, [3] Author not available, CHARCOAL., The Columbia Encyclopedia, Sixth Edition 2007, [4] http://en.wikipedia.org/wiki/Charcoal#History
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