Bauhaus-Universität Weimar

Titel:
Optical Projection: A Treatise of the Use of the Lantern in Exhibition and Scientific Demonstration
Person:
Wright, Lewis
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39439/88/
OPTICAL PROJECTION 
42. Purifying the Gas.—Oxygen thus prepare! from 
commercial chlorate is not fit to pass direct into the bag. 
It is hot, and must be cooled ; it will contain a great deal of 
free chlorine, and must be purified, else both bag and brass- 
work will be rapidly destroyed. And it is very seldom 
properly purified. Properly purified and dried, new jets and 
taps should be used half-a-dozen times without any sign of 
Fig. 48.—Arrangement of Purifier 
green corrosion being visible on the bright brass. I speak 
from experience. 
The hot gas is passed through at least one cooler and 
purifier, as shown in fig. 48, connecting the delivery-tube of 
the retort by a piece of vulcanised tubing with the pipe which 
goes nearly to the bottom of the purifier, and the tube which 
leaves the top of the purifier, with the gas-bag or the next 
purifier. Where only one purification is attempted, the whole 
arrangement is shown in fig. 48, the gas bubbling up through
        

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