 | Charles George Warnford Lock - 1885 - 534 Seiten
...lead-piping heated by the admission of steam from the boiler. The pressure in this vessel is kept low by means of an ordinary air-pump. No acid pump is needed, as all the moving of acid is effected by the pressure of the air. A complete cycle of work would be approximately... | |
 | 1886 - 542 Seiten
...piping heated by steam, the pressure in the vessel being kept down by means of an ordinary air pump. No acid pump is needed, as the transfer from one vessel...pressure of the atmosphere. The comparatively cool weak arid on its way to the concentrator is heated in an interchanger by the strong acid returning from... | |
 | Alexander Ritchie Leask - 1895 - 292 Seiten
...square inch can be continuously maintained; though in actual work about 1\ millimetres, or O0484 lb., per square inch is as low as is necessary. The concentration...pressure of the atmosphere. The comparatively cool and weak acid on its way to the concentrator is heated in an interchanger by the strong acid returning... | |
 | Gardner Dexter Hiscox - 1901 - 774 Seiten
...piping heated by steam, the pressure in the vessel being kept down by means of an ordinary air pump. No acid pump is needed, as the transfer from one vessel...concentrator. Six blocks of ice, each weighing about 560 pounds, are formed in about twenty minutes after starting, The charge of acid is said to serve for... | |
 | Alexander Ritchie Leask - 1901 - 326 Seiten
...inch is as low as is necessary. The concentration of the acid is effected in a lead-lined vessel, iu which is a coil of lead piping heated by steam, the...pressure of the atmosphere. The comparatively cool and weak acid on its way to the concentrator is heated in an interchanger by the strong acid returning... | |
 | 1903 - 466 Seiten
...lead-piping heated by the admission of steam from the boiler. The pressure in this vessel is kept low by means of an ordinary air-pump. No acid pump is needed, as all the moving of acid is effected by the pressure of the air. A complete cycle of work would be approximately... | |
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Ib. per square inch, is as low as is necessary. The concentration of the acid is effected in a lead-lined vessel, in which is a coil of lead piping heated by steam, the pressure in the vessel being kept down by means of an ordinary air-pump. No acid pump... 