US1699644A - Production of alkali-metal nitrate - Google Patents
Production of alkali-metal nitrate Download PDFInfo
- Publication number
- US1699644A US1699644A US190963A US19096327A US1699644A US 1699644 A US1699644 A US 1699644A US 190963 A US190963 A US 190963A US 19096327 A US19096327 A US 19096327A US 1699644 A US1699644 A US 1699644A
- Authority
- US
- United States
- Prior art keywords
- production
- alkali
- metal nitrate
- alkali metal
- sulphuric acid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
- C01D9/06—Preparation with gaseous nitric acid or nitrogen oxides
Definitions
- German Patent No. 390,791 describes a process for the production of alkali metal nitrates by the action of nitric acid, or nitrogen oxids on alkali metal chlorid c solutions. From the resulting alkali metal nitrate 7 solution the hydrochloric acid is simultaneously driven out and the nitrogen oxids contained in the gaseous mixture, escaping during the expulsion of the hydrochloric l0 acig, are recovered by means of sulphuric aci.
- sulphuric aci we have now found that it is particularly advantageous in the aforesaid manufacture of alkali metal nitrates to carry out the treatment of the escaping gaseous mixture with sulphuric acid under pressure. In these circumstances, the absorption of the nitrous gases is effected more easily and quickly while on the other hand, contrary to expectation,
- the pressure employed may have any desired height; for example it may amount to 2, 5, 10, 20 or even more atmospheres.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Patented Jan. 22, 1929.
UNITED STATES PATENT orrics.
"WILHELM WILD AND CHBISTOPH BECK, F LUDWIGSHAFEN-ON-THE RHINE, GER- MANY, ASSIGNOBS TO I, G. FABBENINDUSTRIE AK'IIENGESELLSCHAFT, 0F FRANK- FORT-ON-THE-HAIN, GERMANY, A CORPORATION OF GERMANY.
PRODUCTION OF ALKALI-HETAL NITRATE.
ll'o Drawing. lpplication filed Bay 12, 1927, Serial No. 190,968, and in Germany July 8, 1928.
The specification of the German Patent No. 390,791 describes a process for the production of alkali metal nitrates by the action of nitric acid, or nitrogen oxids on alkali metal chlorid c solutions. From the resulting alkali metal nitrate 7 solution the hydrochloric acid is simultaneously driven out and the nitrogen oxids contained in the gaseous mixture, escaping during the expulsion of the hydrochloric l0 acig, are recovered by means of sulphuric aci We have now found that it is particularly advantageous in the aforesaid manufacture of alkali metal nitrates to carry out the treatment of the escaping gaseous mixture with sulphuric acid under pressure. In these circumstances, the absorption of the nitrous gases is effected more easily and quickly while on the other hand, contrary to expectation,
the solubility of the hydrochloric acid in sulphuric acid is not appreciably increased, in spite of the higher partial pressure. In
carrying out the process under pressure, the
work can be performed, in considerably smaller a paratus and with smaller quantities of su phuric acid than when. working at atmospheric pressure. The pressure employed may have any desired height; for example it may amount to 2, 5, 10, 20 or even more atmospheres.
The following example will further illus- EwampZa-A gas mixture resulting from the said production of alkali metal nitrates and containing 90 per cent of nitrogen, 6 per cent of oxygen, 1 per cent of nitrogen oxids and 3 per cent of hydrogen chlorid is treated, under a pressure of 6 atmospheres, with concentrated sulphuric acid. A solution of nitroxyl-sulphuric acid in sulphuric acid containing up to 5 per cent of nitrogen in the form of nitroxyl-sulphuric acid (at a higher concentration nitroxyl-sulphuric acid would crystallize out), but at the same time only at the utmost 0.025 per cent of hydrogen chlorid is obtained.
We claim I 1. In the production of alkali metal nitrate from alkali metal chlorids and nitric acid, the step of freeing the resulting gas mixture containing nitrogen oxids and hydrogen chlorid from the nitrogen oxids by treatment with sulphuric acid under a pressure higher than atmospheric pressure.
2. In the production of alkali metal nitrate from alkali metal chlorids and nitric acid, the step of freeing the resulting gas mixture containing nitrogen oxids and hydrogen chlorid 6U from the nitrogen oxids by treatment with sulphuric acid under a pressure of 6 atmospheres.
In testimony whereof we have hereunto set our hands.
trate how this invention may be carried out in practice, but the invention is not limited to this example.
WILHELM WILD. CHRISTOPH BECK.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1699644X | 1926-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1699644A true US1699644A (en) | 1929-01-22 |
Family
ID=7739828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US190963A Expired - Lifetime US1699644A (en) | 1926-07-08 | 1927-05-12 | Production of alkali-metal nitrate |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1699644A (en) |
-
1927
- 1927-05-12 US US190963A patent/US1699644A/en not_active Expired - Lifetime
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