Fig 2.]
Fig. 2 is a vertical section of a gas producer and scrubber, which, as
stated above, may be employed in combination with engines such as have
been described for supplying them with combustible gas. The producer
is a vessel lined with refractory material. At the top it has a supply
opening covered by a cap, U, having a flange dipping into a sand joint.
At the bottom it has an opening surrounded by inclined bars, V, which
rest upon a water-pipe perforated with small holes, by which water
issues to cool the bars and generate vapor. This vapor rises along
with a limited supply of air through the incandescent fuel above, and
combustible gas is produced, which collects in the annular space, and
is led thence by a pipe to the scrubber. The scrubber is a vessel
containing in its lower part water, W, supplied by a pipe, and having an
overflow. By means of a perforated deflecting plate the gas is caused
to bubble through the water, whereby it is cleansed and cooled, and it
passes by a pipe, X, to supply the engine. The upper end of the vertical
pipe of the scrubber is made open and covered by a cap sealed in water
while the producer is at work.
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