GB1195261A - Process for the Manufacture of Nitric Acid - Google Patents
Process for the Manufacture of Nitric AcidInfo
- Publication number
- GB1195261A GB1195261A GB2783167A GB2783167A GB1195261A GB 1195261 A GB1195261 A GB 1195261A GB 2783167 A GB2783167 A GB 2783167A GB 2783167 A GB2783167 A GB 2783167A GB 1195261 A GB1195261 A GB 1195261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitric acid
- nitrous gases
- absorption device
- cycle
- june
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treating Waste Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Gas Separation By Absorption (AREA)
- Slide Fasteners (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
1,195,261. Nitric acid. FARBWERKE HOECHST A.G. 16 June, 1967 [18 June, 1966], No. 27831/67. Heading C1A. Nitric acid is made by passing nitrous gases, from the catalytic oxidation of ammonia with air in countercurrent flow with water and aqueous nitric acid in an absorption device, whereby nitrous gases are absorbed. with production of nitric acid, wherein the nitrous gases are introduced into the first half of the absorption device and in a zone in the second half of the absorption device nitrous gases are absorbed and oxidized by oxidizing nitric acid, which is conducted in a cycle separate from the said countercurrent flow, and the oxidized nitrous gases are blown out of solution by air in another part of this separate cycle and introduced into the first half of the absorption device. The nitrous gases entering the zone may have a concentration up to 3% by volume of NO and NO 2 , and preferably 0À5% by volume, and the nitric acid in the cycle has an HNO 3 content of at least 40% by weight and preferably more than 55% by weight. The process may be carried out at superatmospheric pressures, preferably 3 to 8 atmospheres, in the absorbtion device. The oxidizing nitric acid is preferably at a temperature between + 20‹ C. and - 30‹ C., the preferred range being + 10‹ to - 20‹ C. The absorbtion device is preferably a tray column or a packed column.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0049498 | 1966-06-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1195261A true GB1195261A (en) | 1970-06-17 |
Family
ID=7103069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2783167A Expired GB1195261A (en) | 1966-06-18 | 1967-06-16 | Process for the Manufacture of Nitric Acid |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT271503B (en) |
BE (1) | BE700161A (en) |
DE (1) | DE1567523A1 (en) |
GB (1) | GB1195261A (en) |
NL (1) | NL6707548A (en) |
NO (1) | NO116286B (en) |
-
1966
- 1966-06-18 DE DE19661567523 patent/DE1567523A1/en active Pending
-
1967
- 1967-05-31 NL NL6707548A patent/NL6707548A/xx unknown
- 1967-06-16 GB GB2783167A patent/GB1195261A/en not_active Expired
- 1967-06-16 AT AT560467A patent/AT271503B/en active
- 1967-06-17 NO NO16863567A patent/NO116286B/no unknown
- 1967-06-19 BE BE700161D patent/BE700161A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL6707548A (en) | 1967-12-19 |
DE1567523A1 (en) | 1970-04-16 |
BE700161A (en) | 1967-12-19 |
AT271503B (en) | 1969-06-10 |
NO116286B (en) | 1969-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |