Industrial chemistry; a manual for the student and manufacturer - Alfred Bellamy Aubert, Paperback

• Release Date   5/21/2012
• ISBN-13   9781236406644 | 978-1-236-40664-4
• ISBN   1236406648 | 1-236-40664-8
• Format   Paperback
• Author(s)   Alfred Bellamy Aubert
• This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ... 1 pentane candle =1 Bougie decimale. = 1 American candle. = 1.11 Hefner unit. =.104 Corcel unit. In connection with the determination of the illuminating value, attention is called to the report of the Committee on Photometry, presented to the American Gas Inst., 1907. The calorific value of the gas is usually determined in a Junker, or modified Junker, calorimeter. For details regarding the standard methods of conducting this test, recourse should be had to the report of the Committee on Calorimetry of the American Gas Inst, for the years 1908 et seq. See also Chapter IV. Utilization of Residuals. The residuals that are extracted in the course of the purification of the coal gas are worked up differently according to Fig. 253.--Photometer Room. Also showing apparatus for testing sulphur content. the local conditions. In many of the smaller plants the ammonia liquor is sold as a crude liquor containing from 1 to lh per cent of ammonia. This, of course, entails heavy freight on the large diluting hulk of water, so that now the crude is generally concentrated. A sketch of the form of apparatus frequently used is given in Fig. 254. In this apparatus the crude liquor is first heated by steam to drive off the volatile ammonia. It is then treated with milk of lime and heated further to decompose the fixed ammonium salts. The vapor is condensed and carries the ammonia in solution. This results in a liquor containing upwards of 15 to 20 per cent of ammonia, so that it will stand shipment for a considerable distance to the refining plant. In a few plants in this country the liquor is worked up into ammonium sulphate. A sketch of the apparatus, Fig. 255, used for this purpose shows that the ammonia is driven off in the same manner as in the concentrator, but the gas...