Boulet & Co.'s make.
Fig. 1 represents the apparatus complete, with gasometer and bottling
machine. Fig. 2 gives a vertical section of the apparatus properly so
called, including the producer, the purifier, and the saturator, all
grouped upon a cast-iron column.
[Illustration: FIG. 1. APPARATUS FOR MANUFACTURING GASEOUS BREEZES.]
The producer, A, is designed to receive the sulphuric acid and carbonate
of lime. A mixer, F, revolves in the interior of this, and effects an
intimate admixture of the lime and acid without the necessity of the
former being pulverized beforehand. The carbonate of lime (usually in
the form of chalk) is introduced directly into the producer through the
aperture, K, while the acid contained in the receptacle, B, at the side
of the column and above the producer flows put through a curved pipe in
the bottom. The flow is regulated by the valve, C. The receptacle, B, is
lined with platinum. As soon as the acid comes into contact with the
carbonate, there occurs a disengagement of carbonic acid gas, which
flows directly through the pipe, F, into the purifier at the upper part
of the column. From thence the gas passes into a third washer, D, of
glass. When thoroughly washed, it flows through the pipe, L, into the
gasometer, which is of galvanized iron, and is very carefully balanced.
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