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In
the middle ages Paracelsus is reported to
have noted that gas is held at when iron
is dissolved in the “spirit of vitriolic”.
Turquet De mayernc (1573-1655)noted that
this gas was inflammable. However, Hydrogen
was first separated and identified in the
second half of the 18th century. Boyle produced
“factitious air “ from the diluted sul
furic
acid and iron .From many years the industrials
demands for hydrogen were limited to the
relatively small quantities used in operating
oxy-hydrogen lamps used for projection purpose
and for use in the oxyhydrogen blowpipe
for melting refractory materials. But in
1900’s we started using it in production
of ammonia, methanol and on a alcohol's
and for the refinery purpose other than
this now it is used in chemical refinery,
metal treating, fats and oil hydrogenation.
However, hydrogen-manufacturing process
developed the last 75years where primarily
for the use in hydrogen in ammonia and methanol
production rather than the above uses. The
process design is dependent on the final
product as well as available raw materials
and energy sources such as natural gas,
naphtha, gas oils etc.among all industrial
process for hydrogen production.
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