UA91614C2 - Process and unit for production of nitric acid (variants) - Google Patents
Process and unit for production of nitric acid (variants)Info
- Publication number
- UA91614C2 UA91614C2 UAA200813724A UAA200813724A UA91614C2 UA 91614 C2 UA91614 C2 UA 91614C2 UA A200813724 A UAA200813724 A UA A200813724A UA A200813724 A UAA200813724 A UA A200813724A UA 91614 C2 UA91614 C2 UA 91614C2
- Authority
- UA
- Ukraine
- Prior art keywords
- air
- supplied
- gas
- cooling
- nitric acid
- Prior art date
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
-
- 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
- C01B21/28—Apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A group of inventions relates to the production of nonconcentrated and concentrated nitric acid and can be used in nitrogen compound making industry, particularly in power technology production schemes of nitric acid, comprising recuperative gas-turbine unit. According to the invention the air through atmosphere passes primary and fine treatment in filter, supplied to the axial flow compressor, where it is compressed to an absolute pressure of 0.73-0.8 MPa in one stage. The compressed air is distributed to several streams, one of which after cooling in the device of air (or water) cooling is supplied to the cooling of recuperative turbine with the temperature of 140-150 °C, another – to the burning in mixture with natural gas in ratio of (11-15):1 and steam in combustion chamber of recuperative turbine, and the main goes to the technology. By the first variant the main stream of air is supplied to the cooling into the plate heat exchanger, and by the second – to the steam generator into "Kompablok" of plate type. After that by the two variants the main stream of cooled air is divided into two streams, the first of which is supplied to gas mixer, where the ammonia evaporated in evaporators and heated in heaters is supplied, and the second – to the cooling into the water cooling device of air. Ammonia-air mixture, obtained in gas mixer, supplied into the contact device, where on platinoid catalyst ammonia is oxidated to nitrogen oxides. Nitrous gas is cooled at first in exhaust-heat boiler, besides the part of hot gases through bypass governing unit is supplied into the main stream for the preparation of mixed gas, and after that in two heaters of residual gases and then supplied for condensation of reaction moisture into the condensation coolers. Besides the second stream of air, cooled in the water cooling device of air to temperature of 140-150 °C, again divided into two streams, directing one to the additional oxidation of nitrous gas to the condensation coolers, after that the cooled and additionally oxidated nitrous gas is supplied into the absorption column for the preparation of production nitric acid, and another – to the blowoff column, where obtained production nitric acid with weight part of 58-60 % is blown from solved in it nitrogen oxides. Residual gases after the absorption column is heated in heaters of residual gases, purified in reactor of catalytic treatment and heated in combustion chamber of the recuperative turbine to the temperature of 650-700 °C by means of mixing with furnace gas – combustion product of natural gas, air and steam. The invention provides the increasing of reliability and operational life of the recuperative turbine, stabilization work of the cooling stage of process air with the use of low-temperature heat of air compression, optimal distribution of air streams, supplied into technology, operating mode optimization of the combustion chamber of the recuperative turbine and improvement of recuperative heating of residual gases and by means of reaction heat the increased efficiency and reliability of the production of nitric acid in general.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
UAA200813724A UA91614C2 (en) | 2008-11-28 | 2008-11-28 | Process and unit for production of nitric acid (variants) |
RU2009148393/05A RU2470856C2 (en) | 2008-11-28 | 2009-12-24 | Method of producing nitric acid (versions) and plant to this end |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
UAA200813724A UA91614C2 (en) | 2008-11-28 | 2008-11-28 | Process and unit for production of nitric acid (variants) |
Publications (1)
Publication Number | Publication Date |
---|---|
UA91614C2 true UA91614C2 (en) | 2010-08-10 |
Family
ID=44738852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
UAA200813724A UA91614C2 (en) | 2008-11-28 | 2008-11-28 | Process and unit for production of nitric acid (variants) |
Country Status (2)
Country | Link |
---|---|
RU (1) | RU2470856C2 (en) |
UA (1) | UA91614C2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2558113C2 (en) * | 2010-12-01 | 2015-07-27 | Дзе Юниверсити Оф Сидней | Method of nitric acid production |
RU2558112C2 (en) * | 2010-12-01 | 2015-07-27 | Дзе Юниверсити Оф Сидней | Method of producing ammonium nitrate |
CN106769389A (en) * | 2017-02-08 | 2017-05-31 | 朱山 | One kind quickly catches up with sour instrument |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3372556A1 (en) * | 2017-03-07 | 2018-09-12 | Casale Sa | A plant for the production of nitric acid, a related process and method of revamping |
DK3837213T3 (en) | 2018-08-17 | 2022-06-20 | Yara Int Asa | HIGH-ENERGY PROCESS FOR RECYCLING SALPHATIC ACID USING LIQUID OXYGEN LIQUID |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2127224C1 (en) * | 1997-07-09 | 1999-03-10 | Научно-производственная фирма ООО "НИТРОХИМ" | Method of producing nitric acid |
US6165435A (en) * | 1998-12-24 | 2000-12-26 | Praxair Technology, Inc. | Method and production of nitric acid |
RU2248322C1 (en) * | 2003-12-29 | 2005-03-20 | Закрытое акционерное общество "Научно-исследовательский конструкторско-технологический институт турбокомпрессоростроения" | Method of nitric acid production and an installation for production of nitric acid |
-
2008
- 2008-11-28 UA UAA200813724A patent/UA91614C2/en unknown
-
2009
- 2009-12-24 RU RU2009148393/05A patent/RU2470856C2/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2558113C2 (en) * | 2010-12-01 | 2015-07-27 | Дзе Юниверсити Оф Сидней | Method of nitric acid production |
RU2558112C2 (en) * | 2010-12-01 | 2015-07-27 | Дзе Юниверсити Оф Сидней | Method of producing ammonium nitrate |
CN106769389A (en) * | 2017-02-08 | 2017-05-31 | 朱山 | One kind quickly catches up with sour instrument |
Also Published As
Publication number | Publication date |
---|---|
RU2470856C2 (en) | 2012-12-27 |
RU2009148393A (en) | 2011-06-27 |
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