EP1134524A2 - Procédé de production d'azote gazeux - Google Patents
Procédé de production d'azote gazeux Download PDFInfo
- Publication number
- EP1134524A2 EP1134524A2 EP01105925A EP01105925A EP1134524A2 EP 1134524 A2 EP1134524 A2 EP 1134524A2 EP 01105925 A EP01105925 A EP 01105925A EP 01105925 A EP01105925 A EP 01105925A EP 1134524 A2 EP1134524 A2 EP 1134524A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nitrogen
- condenser
- oxygen
- evaporator
- air
- 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.)
- Granted
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 22
- 239000001301 oxygen Substances 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 22
- 238000004821 distillation Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000008016 vaporization Effects 0.000 claims abstract 6
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 239000006200 vaporizer Substances 0.000 abstract 5
- 239000000047 product Substances 0.000 description 5
- 238000004887 air purification Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000004172 nitrogen cycle Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/044—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a single pressure main column system only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04321—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04351—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
Definitions
- the invention relates to a method according to the preamble of claim 1. It serves for the production of gaseous nitrogen by low temperature decomposition of air in a distillation column system that has a single column.
- Single column processes are a common method of producing nitrogen. she unlike double-column processes, only have one pressure column (the single column) on and no other column (low pressure column) for nitrogen-oxygen separation used and operated under lower pressure than the pressure column. This does not rule out that the distillation column system extends beyond the individual column Has columns, for example for the production of particularly pure nitrogen or Oxygen.
- distillation column system comprises the interconnected distillation columns, but not the heat exchangers or the machines such as compressors or Relaxation machines.
- the distillation column system formed exclusively by the single column.
- Oxygen enriched is understood here to mean a mixture of air gases that has a higher oxygen concentration than air, up to practically pure Oxygen. In practice, for example, there are fractions with a Oxygen content of 25 to 90%, preferably 30 to 80%. (All percentages refer here and below to the molar amount, unless otherwise is specified.)
- a nitrogen cycle process according to the preamble of claim 1 known from US 4400188. With nitrogen in a circuit compressor on over Column pressure has been brought up, a condenser evaporator is heated, which is the Represents sump heating of the single column. Process cold is a common Residual gas turbine generated using gas from another condenser-evaporator, a top capacitor is operated.
- the invention has for its object a method of the type mentioned and to provide a corresponding device that is particularly energetically favorable is to be operated.
- This object is achieved in that a second oxygen-enriched gas taken from the evaporation chamber of the condenser-evaporator, doing the work is relaxed and warmed up in the main heat exchanger.
- Air compressors and circuit compressors can be formed by a single machine be, namely by a combination machine, in which several pinions on a shaft sit, some of which are the air compressor and one or more of which Realize cycle compressors.
- the circuit compressor can be at least partially connected to the residual gas turbine Coupled compressor are formed, with at least a portion of the generated work-relieving relaxation of the second oxygen-enriched gas mechanical energy to compress the first part and / or the second part the nitrogen-rich fraction is used.
- the invention also relates to a device according to claim 5.
- the top nitrogen 5 (the "nitrogen-rich fraction") from the single column 4 still contains 1 ppm to 1 ppb oxygen and is in a subcooler 6 and (line 7) further in Main heat exchanger 2 warmed to about ambient temperature.
- the warm one Top nitrogen 8 is fed to a circuit compressor 9, for example two to has three levels. There is one behind each stage of the circuit compressor Post-cooling or intermediate cooling to remove the heat of compression, of which, however, only the aftercooling 10 behind the in the schematic drawing Power stage is shown.
- a first part 12 of the compressed to a pressure of 9.5 bar Top nitrogen 11 is returned to the main heat exchanger 2, there to several Kelvin cooled above the column temperature and the line 13 Liquefaction chamber of a condenser-evaporator 14 supplied.
- the nitrogen-rich liquid 15 thus formed is in the subcooler 6 supercooled and via line 16 and throttle valve 17 to the top of the single column given up.
- a portion 18 of the nitrogen-rich liquid 16 can be as Liquid nitrogen product LIN are withdrawn.
- the liquid production is in the Example about 0% of the air volume.
- the liquid nitrogen from the Single column deducted, the head here as a flash gas separator between the Throttle valve 17 and the liquid product removal 18 is used.
- a second part 19 of the top nitrogen 11 compressed in the circuit compressor 9 is called gaseous nitrogen product removed under pressure (DGAN).
- DGAN gaseous nitrogen product removed under pressure
- a portion 20 of the pressurized nitrogen from an intermediate stage of the cycle compressor led out and at a pressure between the operating pressure of the individual column 4 and the final pressure of the circuit compressor 9 as a gaseous pressure nitrogen product (DGAN ').
- the circuit compressor 9 serves in both cases at the same time as a product compressor.
- the condenser-evaporator 14 is in the example of FIG. 1 directly in the sump the single column.
- first oxygen-enriched gas oxygen-enriched gas
- second oxygen-enriched gas led to the cold end of the main heat exchanger 2.
- this fraction flows via line 22 to a residual gas turbine 23 and becomes work-performing from about 3 bar to about 1.5 bar relaxed.
- the turbine 23 can have a Bypass 26 can be regulated. A small amount of liquid 27 becomes continuous or intermittently as rinsing liquid from the evaporation chamber of the condenser-evaporator 14 dissipated.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10013074 | 2000-03-17 | ||
DE10013074A DE10013074A1 (de) | 2000-03-17 | 2000-03-17 | Verfahren zur Gewinnung von gasförmigem Stickstoff |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1134524A2 true EP1134524A2 (fr) | 2001-09-19 |
EP1134524A3 EP1134524A3 (fr) | 2002-01-09 |
EP1134524B1 EP1134524B1 (fr) | 2005-10-05 |
Family
ID=7635135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01105925A Expired - Lifetime EP1134524B1 (fr) | 2000-03-17 | 2001-03-09 | Procédé de production d'azote gazeux |
Country Status (4)
Country | Link |
---|---|
US (1) | US6470707B2 (fr) |
EP (1) | EP1134524B1 (fr) |
AT (1) | ATE306062T1 (fr) |
DE (2) | DE10013074A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1314941A2 (fr) * | 2001-11-23 | 2003-05-28 | Messer AGS GmbH | Procédé et dispositif pour la production d'azote à partir de l'air |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7864163B2 (en) | 2006-09-06 | 2011-01-04 | Apple Inc. | Portable electronic device, method, and graphical user interface for displaying structured electronic documents |
DE102007024168A1 (de) * | 2007-05-24 | 2008-11-27 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
DE102007051184A1 (de) * | 2007-10-25 | 2009-04-30 | Linde Aktiengesellschaft | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
DE102007051183A1 (de) * | 2007-10-25 | 2009-04-30 | Linde Aktiengesellschaft | Verfahren zur Tieftemperatur-Luftzerlegung |
EP2236964B1 (fr) * | 2009-03-24 | 2019-11-20 | Linde AG | Procédé et dispositif de séparation de l'air à basse température |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1392294A (en) * | 1971-06-28 | 1975-04-30 | British Oxygen Co Ltd | Air separation |
US4400188A (en) * | 1981-10-27 | 1983-08-23 | Air Products And Chemicals, Inc. | Nitrogen generator cycle |
DE19623310A1 (de) * | 1995-11-21 | 1996-11-07 | Linde Ag | Einzelsäulenverfahren und -vorrichtung zur Tieftemperaturzerlegung von Luft |
EP0816784A1 (fr) * | 1996-06-26 | 1998-01-07 | Crio & Eng S.r.l. | Dispositif pour le fractionnement d'air ou d'un mélange d'oxygène et d'azote pour la production d'oxygène et d'azote ou d'azote |
FR2767317A1 (fr) * | 1997-08-14 | 1999-02-19 | Air Liquide | Procede de conversion d'un debit contenant des hydrocarbures par oxydation partielle |
DE10013073A1 (de) * | 2000-03-17 | 2000-10-19 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543395A1 (de) * | 1995-11-21 | 1997-05-22 | Linde Ag | Doppelsäulenverfahren und -vorrichtung zur Tieftemperaturzerlegung von Luft |
GB9806293D0 (en) * | 1998-03-24 | 1998-05-20 | Boc Group Plc | Separation of air |
-
2000
- 2000-03-17 DE DE10013074A patent/DE10013074A1/de not_active Withdrawn
-
2001
- 2001-03-09 DE DE50107586T patent/DE50107586D1/de not_active Expired - Lifetime
- 2001-03-09 EP EP01105925A patent/EP1134524B1/fr not_active Expired - Lifetime
- 2001-03-09 AT AT01105925T patent/ATE306062T1/de not_active IP Right Cessation
- 2001-03-19 US US09/810,708 patent/US6470707B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1392294A (en) * | 1971-06-28 | 1975-04-30 | British Oxygen Co Ltd | Air separation |
US4400188A (en) * | 1981-10-27 | 1983-08-23 | Air Products And Chemicals, Inc. | Nitrogen generator cycle |
DE19623310A1 (de) * | 1995-11-21 | 1996-11-07 | Linde Ag | Einzelsäulenverfahren und -vorrichtung zur Tieftemperaturzerlegung von Luft |
EP0816784A1 (fr) * | 1996-06-26 | 1998-01-07 | Crio & Eng S.r.l. | Dispositif pour le fractionnement d'air ou d'un mélange d'oxygène et d'azote pour la production d'oxygène et d'azote ou d'azote |
FR2767317A1 (fr) * | 1997-08-14 | 1999-02-19 | Air Liquide | Procede de conversion d'un debit contenant des hydrocarbures par oxydation partielle |
DE10013073A1 (de) * | 2000-03-17 | 2000-10-19 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1314941A2 (fr) * | 2001-11-23 | 2003-05-28 | Messer AGS GmbH | Procédé et dispositif pour la production d'azote à partir de l'air |
EP1314941A3 (fr) * | 2001-11-23 | 2003-08-27 | Messer AGS GmbH | Procédé et dispositif pour la production d'azote à partir de l'air |
Also Published As
Publication number | Publication date |
---|---|
ATE306062T1 (de) | 2005-10-15 |
EP1134524B1 (fr) | 2005-10-05 |
DE50107586D1 (de) | 2005-11-10 |
US6470707B2 (en) | 2002-10-29 |
US20010052242A1 (en) | 2001-12-20 |
DE10013074A1 (de) | 2001-09-20 |
EP1134524A3 (fr) | 2002-01-09 |
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