Content derived from
Wikipedia article on Syngas
Syngas
Syngas (from synthesis gas) is the name given to a gas
mixture that contains varying amounts of carbon monoxide and hydrogen
generated by the gasification of a carbon containing fuel to a gaseous
product with a heating value. Examples include steam reforming of natural gas
or liquid hydrocarbons to produce hydrogen, the gasification of coal and in
some types of waste-to-energy gasification facilities. The name comes from
their use as intermediates in creating synthetic natural gas (SNG) and for
producing ammonia or methanol. Syngas is also used as an intermediate in
producing Synthetic Petroleum for use as a fuel or lubricant via
Fischer-Tropsch synthesis and previously the Mobil process.
Syngas consists primarily of carbon monoxide, carbon
dioxide and hydrogen, and has less than half the energy density of natural
gas. Syngas is combustible and often used as a fuel source or as an
intermediate for the production of other chemicals. Syngas for use as a fuel
is most often produced by gasification of coal or municipal waste mainly by
the following paths:
C + O2 → CO2
CO2 + C → 2CO
C + H2O → CO + H2
When used as an intermediate in the large-scale,
industrial synthesis of hydrogen and ammonia, it is also produced from natural
gas (via the steam reforming reaction) as follows:
CH4 + H2O → CO + 3 H2
The syngas produced in large waste-to-energy gasification
facilities is used as fuel to generate electricity.
Coal gasification processes are reasonably efficient and were used for many years to manufacture illuminating gas (coal gas) for gas lighting, before electric lighting became widely available.
Related Topics
IGCC
Gasification
Town gas
Wood gas
Boudouard reaction
http://en.wikipedia.org/wiki/Syngas
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