The by-Products of Coal-Gas Manufacture (Classic Reprint)
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Lange, K. R.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from The by-Products of Coal-Gas Manufacture The gas which issues when a gas burner is turned on is not the only product furnished by the dry distillation of coal, the crude gas, as it leaves the retorts, containing substances the combustion of which has an unsalutary effect on the human organism, so that these substances must be removed from the gas before it reaches the consumer. The bodies in question are, chiefly, sulphuretted hydrogen, hydrocyanic acid and ammonia. The distillation of coal is conducted at a very high temperature; and some of the gaseous products thus formed do not remain in the state of gas at the ordinary room temperature. Consequently, a partial condensation of the gaseous mixture occurs on the way to the gasholder, coal-tar and gas liquor being deposited. Their complete separation is effected by suitable cooling, in order to prevent obstruction in the pipes. Naphthalene, in particular, tends to choke up the pipes to an unpleasant extent in cold weather, by crystallization. The substances to be regarded as the raw material of the by-products in coal-gas making are the coke and graphite left in the retorts, and the tar, gas liquor, sulphuretted hydrogen and hydrocyanic acid in the distillate. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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