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1 жёсткая вода, образующая накипь
жёсткая вода, образующая накипь
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Русско-английский словарь нормативно-технической терминологии > жёсткая вода, образующая накипь
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2 накипь
чистить котёл, снимать накипь с котла — to scale a boiler
жесткая вода, образующая накипь — scale producing water
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3 жёсткая вода, образующая накипь
1) Engineering: scale-producing water2) Oil: scale producing waterУниверсальный русско-английский словарь > жёсткая вода, образующая накипь
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4 шкала цветности воды
жесткая вода, образующая накипь — scale producing water
Русско-английский военно-политический словарь > шкала цветности воды
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5 накипь
ж. scaleжесткая вода, образующая накипь — scale producing water
чистить котёл, снимать накипь с котла — to scale a boiler
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6 удалять накипь
1. scale[lang name="Russian"]чистить котёл, снимать накипь с котла — to scale a boiler
[lang name="Russian"]жесткая вода, образующая накипь — scale producing water
2. scaling -
7 вода, дающая котельный камень
Geology: scale-producing waterУниверсальный русско-английский словарь > вода, дающая котельный камень
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8 Mitscherlich, Alexander
SUBJECT AREA: Paper and printing[br]b. 28 May 1836 Berlin, Germanyd. 31 May 1918 Oberstdorf, Germany[br]German inventor of sulphite wood pulp for papermaking.[br]Mitscherlich had an impeccable scientific background; his father was the celebrated chemist Eilhardt Mitscherlich, discoverer of the law of isomorphism, and his godfather was Alexander von Humboldt. At first his progress at school failed to live up to this auspicious beginning and his father would only sanction higher studies if he first qualified as a teacher so as to assure a means of livelihood. Alexander rose to the occasion and went on to gain his doctorate at the age of 25 in the field of mineralogical chemistry. He worked for a few years as Assistant to the distinguished chemists Wöhler in Göttingen and Wurtz in Paris. On his father's death in 1863, he succeeded him as teacher of chemistry in the University of Berlin. In 1868 he accepted a post in the newly established Forest Academy in Hannoversch-Munden, teaching chemistry, physics and geology. The post offered little financial advantage, but it left him more time for research. It was there that he invented the process for producing sulphite wood pulp.The paper industry was seeking new raw materials. Since the 1840s pulp had been produced mechanically from wood, but it was unsuitable for making fine papers. From the mid-1860s several chemists began tackling the problem of separating the cellulose fibres from the other constituents of wood by chemical means. The American Benjamin C.Tilghman was granted patents in several countries for the treatment of wood with acid or bisulphite. Carl Daniel Ekman in Sweden and Karl Kellner in Austria also made sulphite pulp, but the credit for devising the process that came into general use belongs to Mitscherlich. His brother Oskar came to him at the Academy with plans for producing pulp by the action of soda, but the results were inferior, so Mitscherlich substituted calcium bisulphite and in the laboratory obtained good results. To extend this to a large-scale process, he was forced to set up his own mill, where he devised the characteristic towers for making the calcium bisulphite, in which water trickling down through packed lime met a rising current of sulphur dioxide. He was granted a patent in Luxembourg in 1874 and a German one four years later. The sulphite process did not make him rich, for there was considerable opposition to it; government objected to the smell of sulphur dioxide, forestry authorities were anxious about the inroads that might be made into the forests and his patents were contested. In 1883, with the support of an inheritance from his mother, Mitscherlich resigned his post at the Academy to devote more time to promoting his invention. In 1897 he at last succeeded in settling the patent disputes and achieving recognition as the inventor of sulphite pulp. Without this raw material, the paper industry could never have satisfied the insatiable appetite of the newspaper presses.[br]Further ReadingH.Voorn "Alexander Mitscherlich, inventor of sulphite wood pulp", Paper Maker 23(1): 41–4.LRDBiographical history of technology > Mitscherlich, Alexander
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9 Bosch, Carl
SUBJECT AREA: Chemical technology[br]b. 27 August 1874 Cologne, Germanyd. 26 April 1940 Heidelberg, Germany[br]German industrial chemist who developed the industrial synthesis of ammonia.[br]Bosch spent a year as a metalworker before studying chemistry at Leipzig University, obtaining his doctorate in 1898. The following year, he entered Badische Soda-, Anilin Fabrik (BASF), the leading German manufacturer of dyestuflfs. Between 1902 and 1907 he spent much time investigating processes for nitrogen fixation. In 1908 Fritz Haber told BASF of his laboratory-scale synthesis of ammonia from its constituent elements, and in the following year Bosch was assigned to developing it to the industrial scale. Leading a large team of chemists and engineers, Bosch designed the massive pressure converter and other features of the process and was the first to use the water gas shift reaction to produce the large quantities of hydrogen that were required. By 1913 Bosch had completed the largest chemical engineering plant at BASF's works at Oppau, and soon it was producing 36,000 tons of ammonium sulphate a year. Bosch enlarged the Oppau plant and went on to construct a larger plant at Leuna.In 1914 Bosch was appointed a Director of BASF. At the end of the First World War he became Technical Adviser to the German delegation at the peace conference. During the 1920s BASF returned to its position of pre-eminence in high-pressure technology, thanks largely to Bosch's leadership. Although increasingly absorbed in administrative matters, Bosch was able to support the synthesis of methane and the hydrogenation of coal tar and lignite to make petrol. In 1925 BASF merged with other companies to form the giant IG Farbenindustrie AG, of which Bosch became Chairman of the Managing Board. His achievements received international recognition in 1931 when he was awarded, with F. Bergius, the Nobel Prize in Chemistry for high-pressure synthesis.[br]Bibliography1932, Über die Entwicklung der chemischen Hochdruckindustrie bei der Aufbau der neuen Ammoniakindustrie.Further ReadingK.Holdermann, 1953, Carl Bosch, Leben und Werk.See also biographical memoir in Chemische Berichte 190 (1957), pp. xix–xxxix.LRD -
10 Roebuck, John
SUBJECT AREA: Chemical technology[br]b. 1718 Sheffield, Englandd. 17 July 1794[br]English chemist and manufacturer, inventor of the lead-chamber process for sulphuric acid.[br]The son of a prosperous Sheffield manufacturer, Roebuck forsook the family business to pursue studies in medicine at Edinburgh University. There he met Dr Joseph Black (1727–99), celebrated Professor of Chemistry, who aroused in Roebuck a lasting interest in chemistry. Roebuck continued his studies at Leyden, where he took his medical degree in 1742. He set up in practice in Birmingham, but in his spare time he continued chemical experiments that might help local industries.Among his early achievements was his new method of refining gold and silver. Success led to the setting up of a large laboratory and a reputation as a chemical consultant. It was at this time that Roebuck devised an improved way of making sulphuric acid. This vital substance was then made by burning sulphur and nitre (potassium nitrate) over water in a glass globe. The scale of the process was limited by the fragility of the glass. Roebuck substituted "lead chambers", or vessels consisting of sheets of lead, a metal both cheap and resistant to acids, set in wooden frames. After the first plant was set up in 1746, productivity rose and the price of sulphuric acid fell sharply. Success encouraged Roebuck to establish a second, larger plant at Prestonpans, near Edinburgh. He preferred to rely on secrecy rather than patents to preserve his monopoly, but a departing employee took the secret with him and the process spread rapidly in England and on the European continent. It remained the standard process until it was superseded by the contact process towards the end of the nineteenth century. Roebuck next turned his attention to ironmaking and finally selected a site on the Carron river, near Falkirk in Scotland, where the raw materials and water power and transport lay close at hand. The Carron ironworks began producing iron in 1760 and became one of the great names in the history of ironmaking. Roebuck was an early proponent of the smelting of iron with coke, pioneered by Abraham Darby at Coalbrookdale. To supply the stronger blast required, Roebuck consulted John Smeaton, who c. 1760 installed the first blowing cylinders of any size.All had so far gone well for Roebuck, but he now leased coal-mines and salt-works from the Duke of Hamilton's lands at Borrowstonness in Linlithgow. The coal workings were plagued with flooding which the existing Newcomen engines were unable to overcome. Through his friendship with Joseph Black, patron of James Watt, Roebuck persuaded Watt to join him to apply his improved steam-engine to the flooded mine. He took over Black's loan to Watt of £1,200, helped him to obtain the first steam-engine patent of 1769 and took a two-thirds interest in the project. However, the new engine was not yet equal to the task and the debts mounted. To satisfy his creditors, Roebuck had to dispose of his capital in his various ventures. One creditor was Matthew Boulton, who accepted Roebuck's two-thirds share in Watt's steam-engine, rather than claim payment from his depleted estate, thus initiating a famous partnership. Roebuck was retained to manage Borrowstonness and allowed an annuity for his continued support until his death in 1794.[br]Further ReadingMemoir of John Roebuck in J.Roy. Soc. Edin., vol. 4 (1798), pp. 65–87.S.Gregory, 1987, "John Roebuck, 18th century entrepreneur", Chem. Engr. 443:28–31.LRD
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