GB1068568A - Improvements in the production of nitric acid - Google Patents
Improvements in the production of nitric acidInfo
- Publication number
- GB1068568A GB1068568A GB2569764A GB2569764A GB1068568A GB 1068568 A GB1068568 A GB 1068568A GB 2569764 A GB2569764 A GB 2569764A GB 2569764 A GB2569764 A GB 2569764A GB 1068568 A GB1068568 A GB 1068568A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- heated
- pipe
- cooler
- water
- 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
-
- 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)
- Gas Separation By Absorption (AREA)
Abstract
<PICT:1068568/C1/1> In the preparation of nitric acid by the catalytic combustion of ammonia with air or other free oxygen-containing gas, followed by absorption of the oxidized nitrous gases in water, a filling fluid, particularly water, is added to the residual gases prior to their indirect heating by the combustion gases, and the heated mixture is used to drive a turbine. The expanded gases are subsequently cooled to below the dew-point to recover at least part of the latent heat of condensation of the water, suitably by indirect heat exchange in the same vessel as the compressed residual gases and water are mixed. Referring to the drawing, air is compressed to e.g. 2.5 kg. per sq. cm. above atmospheric pressure in compressor 7, controlled, as is compressor 9, by turbine 10, passes via pipe 8 to heat exchanger 16 where it is heated to 180 DEG C., and mixed with ammonia from vaporizer 1 in vessel 5. The mixture is fed to burner 18, and the combustion gases pass through heat exchangers 19, 20, 16, 22 and cooler 23 to oxidation towers 24 and 25. The temperature drops from 800 DEG C. in burner 18 to 45 DEG C. in cooler 23. The oxidized nitrous gases are fed through channel 26 and cooler 27 and compressed to, e.g. 10 kg. per sq. cm. above atmospheric pressure in compressor 9. The compressed gases pass via pipe 28 and cooler 29 to oxidation tower 30 and thence to absorption tower 31 from which nitric acid is removed at 32. The residual gases at, e.g. 9 kg. per sq. cm. above atmospheric pressure pass via pipe 33 to heat exchanger 34 where they contact water under pressure supplied by pump 40 and heated to about 200 DEG C. by heat exchanger 22. The mixed gases are heated to about 125 DEG C. in exchanger 34 by indirect contact with the gases leaving turbine 9, and pass through pipe 35 to heat exchangers 20 and 19, being thus heated to 600 DEG C. by indirect contact with the combustion gases. The hot gas mixture is fed through pipe 36 to the turbine 10, and after expansion, return through pipe 37 to heat exchanger 34, where their temperature falls below the dew point. Condensed liquid is separated in 39, and may be recycled through pump 40 or, if containing nitric acid, to the absorption tower.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR939272A FR1368861A (en) | 1963-06-25 | 1963-06-25 | Improvements in the manufacture of nitric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1068568A true GB1068568A (en) | 1967-05-10 |
Family
ID=8806860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2569764A Expired GB1068568A (en) | 1963-06-25 | 1964-06-22 | Improvements in the production of nitric acid |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1368861A (en) |
| GB (1) | GB1068568A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305919A (en) * | 1978-12-29 | 1981-12-15 | Davy International Aktiengesellschaft | Process and plant equipment for the short-term propulsion of one or several turbines coupled to an air and/or nitrous gas compressor in a plant for the production of nitric acid |
| US4330520A (en) * | 1979-12-18 | 1982-05-18 | Davy Mckee Aktiengesellschaft | Process and apparatus for preventing NOx emissions after emergency shutdowns of plants for the manufacture of nitric acid |
| CN109562942A (en) * | 2016-09-19 | 2019-04-02 | 斯塔米卡邦有限公司 | For producing the device and method of nitric acid |
-
1963
- 1963-06-25 FR FR939272A patent/FR1368861A/en not_active Expired
-
1964
- 1964-06-22 GB GB2569764A patent/GB1068568A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305919A (en) * | 1978-12-29 | 1981-12-15 | Davy International Aktiengesellschaft | Process and plant equipment for the short-term propulsion of one or several turbines coupled to an air and/or nitrous gas compressor in a plant for the production of nitric acid |
| US4330520A (en) * | 1979-12-18 | 1982-05-18 | Davy Mckee Aktiengesellschaft | Process and apparatus for preventing NOx emissions after emergency shutdowns of plants for the manufacture of nitric acid |
| CN109562942A (en) * | 2016-09-19 | 2019-04-02 | 斯塔米卡邦有限公司 | For producing the device and method of nitric acid |
| CN109562942B (en) * | 2016-09-19 | 2023-04-18 | 斯塔米卡邦有限公司 | Apparatus and method for producing nitric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1368861A (en) | 1964-08-07 |
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