SU59810A1 - The method of obtaining concentrated nitric acid - Google Patents
The method of obtaining concentrated nitric acidInfo
- Publication number
- SU59810A1 SU59810A1 SU23898A SU23898A SU59810A1 SU 59810 A1 SU59810 A1 SU 59810A1 SU 23898 A SU23898 A SU 23898A SU 23898 A SU23898 A SU 23898A SU 59810 A1 SU59810 A1 SU 59810A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- nitric acid
- concentrated nitric
- obtaining concentrated
- obtaining
- liquor
- Prior art date
Links
Landscapes
- Treating Waste Gases (AREA)
Description
На азотнокислотных установках, работающих при атмосфернам давлении, остатки нитрозных газов поглощаютс СОДОВЁ1М или известковым раствором. Получаемые при этом щелока содержат около 80% нитритов и около 20% нитратов.In nitric acid plants operating at atmospheric pressure, the remnants of nitrous gases are absorbed by SODOVYM or lime mortar. The resulting liquor contains about 80% nitrite and about 20% nitrate.
Дл перевода «итритных щелоков в нитратные производитс инвертирование щелоков в азотнокислой среде.To translate the "nitrite liquor into nitrate liquor, the liquor is inverted in a nitric acid medium.
При Енверсии натровых и кальцие. вых щелоков посредством азотной кислоты выдел ютс кон-центрированные окислы азота.With enversion of sodium and calcium. Concentrated oxides of nitrogen are liberated from the liquors by means of nitric acid.
Выдел ющиес прв этом окислы азота направл лись обычно в последню баЩню абсорбционной системы, где поглощались 10-15%-й азотной кислотой .Nitrogen oxides released in this way were usually sent to the last BASE of the absorption system, where they were absorbed by 10-15% nitric acid.
Согласно насто щему изобретению, имеющему целью получить концентрирова ную азотную кислоту, предлагаетс инверсио«ные газы после инверсии окисл ть чистым кислородом в отдельной бащне (во избежание разбавлени концентрации окислов азота) и; поглощать затем в абсорбционной бащ е 40-45%-й азотной кислотой.According to the present invention, with the aim of obtaining concentrated nitric acid, it is proposed that the inversion gases, after inversion, be oxidized with pure oxygen in a separate container (to avoid diluting the concentration of nitrogen oxides) and; then absorb in the absorption base with 40-45% nitric acid.
В результате 40% азотна ) кислота закрепл етс до концентрации 60% и выще, что дает больщую экойомию при дальнейщем: концентрировании до 98%.As a result, 40% nitric acid is fixed to a concentration of 60% and more, which gives a greater eukomia with further concentration to 98%.
Предмет и з о б р е т е Н и .The subject and s o rt e n i.
Способ получени концентрированной азотной КИСЛОТЫ из1 нитрозных газов , полученных -при ийверсии; щелоков , содержащих :нитриты и нитраты кальци или натри , азотной кислотой, отличающийс тем, что указанные нитрозные газы окисл ют чистыМ кислородом и поглощают слабой азотной кислотой под атмосферным давлением .The method of obtaining concentrated nitric acid from 1 nitrous gases produced by i-conversion; liquors containing: nitrites and nitrates of calcium or sodium, nitric acid, characterized in that said nitrous gases are oxidized with pure oxygen and absorbed with weak nitric acid under atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU23898A SU59810A1 (en) | 1939-04-24 | 1939-04-24 | The method of obtaining concentrated nitric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU23898A SU59810A1 (en) | 1939-04-24 | 1939-04-24 | The method of obtaining concentrated nitric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU59810A1 true SU59810A1 (en) | 1940-11-30 |
Family
ID=48241841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU23898A SU59810A1 (en) | 1939-04-24 | 1939-04-24 | The method of obtaining concentrated nitric acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU59810A1 (en) |
-
1939
- 1939-04-24 SU SU23898A patent/SU59810A1/en active
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