ammonia-soda process

ammonia-soda process

▪ chemical process
also called  Solvay Process,  

      modern method of manufacturing the industrial alkali sodium carbonate, also known as soda ash. The process was devised and first put to commercial use by Ernest Solvay (Solvay, Ernest), who built a plant in 1865 in Couillet, Belg., and was improved in the 1870s by the German-born British chemist Ludwig Mond (Mond, Ludwig).

      In the ammonia-soda (ammonia) process, common salt, sodium chloride, is treated with ammonia and then carbon dioxide, under carefully controlled conditions, to form sodium bicarbonate and ammonium chloride. When heated, the bicarbonate yields sodium carbonate, the desired product; the ammonium chloride is treated with lime to produce ammonia for reuse and calcium chloride.

      For some years after its introduction, the ammonia-soda process encountered stiff competition from the older Leblanc process, but it ultimately prevailed because it produced soda ash more cheaply.

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Universalium. 2010.

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Look at other dictionaries:

  • ammonia soda process — noun : a process for making soda from common salt by using ammonia and carbon dioxide; specifically : solvay process …   Useful english dictionary

  • soda process — noun any of several industrial processes that either use or manufacture sodium hydroxide, but especially a method of making paper from wood pulp See Also: ammonia soda process, cryolite soda process, LeBlanc soda process, Solvay process …   Wiktionary

  • ammonia soda — noun : soda made by the ammonia soda process …   Useful english dictionary

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  • process — processual /pro sesh ooh euhl/ or, esp. Brit, /proh /, adj. /pros es/; esp. Brit. /proh ses/, n., pl. processes /pros es iz, euh siz, euh seez / or, esp. Brit., /proh ses , proh seuh /, v., adj. n. 1. a systematic series of actions directed to… …   Universalium

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  • Solvay process — a process for manufacturing sodium carbonate whereby a concentrated solution of sodium chloride is saturated with ammonia, carbon dioxide is passed through it, and the product is calcined. [1885 90; named after E. SOLVAY] * * * or ammonia soda… …   Universalium

  • caustic soda — n. SODIUM HYDROXIDE * * * Sodium hydroxide (NaOH), an inorganic compound. The alkalies called caustic soda and caustic potash (potassium hydroxide) are very important industrial chemicals, with uses in the manufacture of soaps, glass, and… …   Universalium

  • Leblanc process — The Leblanc process was the industrial process for the production of soda ash (sodium carbonate) used throughout the 19th century, named after its inventor, Nicolas Leblanc. It involved two stages: Production of sodium sulfate from sodium… …   Wikipedia

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