AT34170B - Process for the concentration of nitric acid using water-binding salts. - Google Patents

Process for the concentration of nitric acid using water-binding salts.

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Publication number
AT34170B
AT34170B AT34170DA AT34170B AT 34170 B AT34170 B AT 34170B AT 34170D A AT34170D A AT 34170DA AT 34170 B AT34170 B AT 34170B
Authority
AT
Austria
Prior art keywords
nitric acid
concentration
water
binding salts
salts
Prior art date
Application number
Other languages
German (de)
Original Assignee
Basf Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1905189865D external-priority patent/DE189865C/de
Application filed by Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT34170B publication Critical patent/AT34170B/en

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  • Treatment Of Water By Oxidation Or Reduction (AREA)

Description

  

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   Steigert man dann die Temperatur wieder auf etwa   150-2000,   so gibt das   zurückgebliebene   Kalziumnitrat das gebundene Wasser (4 Moleküle) wieder ab, wird wasserfrei und ist zu einer neuen Wasserentziehung aus Salpetersäurelösungen wieder gebrauchsfähig. 



   Ein besonderer Vorteil der Verwendung von Kalziumnitrat ist der, dass sich dieses Salz sehr porös aufbläht und so der Salpetersäurelösung eine grosse Oberfläche darbietet. 



   Das Verfahren wird zweckmässig nach dem Prinzip des Gegenstroms ausgeübt, eventuell 
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   Salpetersäure   die Gewichtsverhältnisse erwiesen, dass man auf 1 kg Salpetersäure etwa 1· bis   1 % kg   Kalziumnitrat nimmt. 
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   If the temperature is then increased again to around 150-2000, the remaining calcium nitrate releases the bound water (4 molecules) again, becomes anhydrous and can be used again for a new dehydration from nitric acid solutions.



   A particular advantage of using calcium nitrate is that this salt expands in a very porous manner and thus presents the nitric acid solution with a large surface.



   The process is expediently carried out according to the countercurrent principle, possibly
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   Nitric acid the weight ratios have shown that for 1 kg of nitric acid one takes about 1 · to 1% kg of calcium nitrate.
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AT34170D 1905-12-18 1907-10-11 Process for the concentration of nitric acid using water-binding salts. AT34170B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905189865D DE189865C (en) 1905-12-18

Publications (1)

Publication Number Publication Date
AT34170B true AT34170B (en) 1908-08-25

Family

ID=5721530

Family Applications (1)

Application Number Title Priority Date Filing Date
AT34170D AT34170B (en) 1905-12-18 1907-10-11 Process for the concentration of nitric acid using water-binding salts.

Country Status (1)

Country Link
AT (1) AT34170B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716631A (en) * 1951-11-03 1955-08-30 Hercules Powder Co Ltd Nitric acid concentration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716631A (en) * 1951-11-03 1955-08-30 Hercules Powder Co Ltd Nitric acid concentration

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