EP0595673A1 - Verfahren und Anlage zur Herstellung von Stickstoff und Sauerstoff - Google Patents

Verfahren und Anlage zur Herstellung von Stickstoff und Sauerstoff Download PDF

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Publication number
EP0595673A1
EP0595673A1 EP93402421A EP93402421A EP0595673A1 EP 0595673 A1 EP0595673 A1 EP 0595673A1 EP 93402421 A EP93402421 A EP 93402421A EP 93402421 A EP93402421 A EP 93402421A EP 0595673 A1 EP0595673 A1 EP 0595673A1
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EP
European Patent Office
Prior art keywords
column
liquid
reboiler
nitrogen
condenser
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
Application number
EP93402421A
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English (en)
French (fr)
Other versions
EP0595673B1 (de
Inventor
Pascal Arriulou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0595673A1 publication Critical patent/EP0595673A1/de
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Publication of EP0595673B1 publication Critical patent/EP0595673B1/de
Anticipated expiration legal-status Critical
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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
    • F25J3/0429—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 feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • 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
    • 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
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04884—Arrangement of reboiler-condensers
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead gas
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/76—Refluxing the column with condensed overhead gas being cycled in a quasi-closed loop refrigeration cycle
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/939—Partial feed stream expansion, air

Definitions

  • the object of the invention is to improve this process so as to also allow a minority production of oxygen.
  • FIG. 1 The installation shown in Figure 1 is of the general type described with reference to Figure 2 of the aforementioned EP-A-413 631. It essentially comprises an air compressor 1, an apparatus 2 for purifying the air of water and CO2 by adsorption, a heat exchange line 3, a distillation column 4, a turbine 5 for air expansion. , an auxiliary heat exchanger 6 and a nitrogen compressor 7.
  • Column 4 comprises a head condenser 8 and a tank reboiler 9. This column operates under a pressure known as medium pressure, typically of the order of 3 to 5 absolute bars.
  • the air to be treated compressed by the compressor 1 at a pressure markedly higher than the medium pressure and then purified in 2, is cooled to an intermediate temperature in the heat exchange line 3. A fraction of the air is then out of heat exchange line, expanded at medium pressure in turbine 5 and introduced at an intermediate level in column 4.
  • Production nitrogen gas is drawn off at the top of the column via a pipe 11, heated in 6 then in 3, and recovered as the first product (medium-pressure nitrogen gas) via a pipe 12.
  • An adjustable flow of medium pressure nitrogen is taken from line 12 and compressed to a high pressure by compressor 7. Part of the high pressure nitrogen can constitute a second product of the installation, recovered via line 13, and the rest is recycled via a pipe 14, cooled to the cold end of the exchange line 3 and sent to the reboiler 9, where it condenses.
  • the liquid nitrogen thus obtained, sub-cooled in 6, is expanded in an expansion valve 15 and injected under reflux at the top of the column 4, part of this liquid nitrogen being able to be recovered as a third product (liquid nitrogen under high pressure) via a 15A line.
  • a liquid, called “rich liquid” is withdrawn, via a line 16, at an intermediate level between the level of introduction of the turbined air and the reboiler, that is to say that there are a certain number of distillation plates 17 between line 16 and the introduction of the turbined air and a certain number of plates 18 below line 16.
  • This liquid is sub-cooled in 6, expanded at a low pressure slightly higher than the atmospheric pressure in an expansion valve 19 and introduced into the condenser 8, where it vaporizes.
  • the rich liquid vaporized, after heating in 6 and then in the heat exchange line 3, is discharged via a pipe 19 constituting the waste gas W of the installation.
  • the bottom liquid of the column which cools the reboiler 9, consists of oxygen at a desired content of impurities.
  • a relatively low flow rate of this liquid of the order of a few% of the incoming air flow rate, is vaporized by the reboiler 9 and withdrawn from the column in gaseous form immediately above it via a line 20, c that is to say that there is no distillation stage between the reboiler and this pipe 20.
  • this medium-pressure gaseous oxygen constitutes a fourth product of the installation, which is recovered via a line 21.
  • a pipe 22 for purging liquid oxygen from the bottom of the column is also shown in Figure 1, a pipe 22 for purging liquid oxygen from the bottom of the column.
  • the pipe 20 is deleted, and a pipe 23 is pitted on the pipe 22.
  • the liquid oxygen conveyed by this line 23 is sub-cooled at 6, expanded in an expansion valve 24 and introduced into an auxiliary condenser 25 mounted in the column 4 below the head condenser 8, to be vaporized there.
  • the expression "below” means that there are a number of distillation trays between the two condensers.
  • This variant makes it possible to increase the reflux in column 4, in return for the production of gaseous oxygen under low pressure.
  • the embodiment 3 differs from the previous one only in that the auxiliary condenser 25 is mounted in parallel with the head condenser 8 and therefore constitutes a second head condenser of the column.
  • the production of the column is thereby simplified, but, on the other hand, it is necessary to slightly increase the pressure of the rich liquid vaporized and therefore the pressure of the incoming air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
EP93402421A 1992-10-27 1993-10-04 Verfahren und Anlage zur Herstellung von Stickstoff und Sauerstoff Expired - Lifetime EP0595673B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9212759A FR2697325B1 (fr) 1992-10-27 1992-10-27 Procédé et installation de production d'azote et d'oxygène.
FR9212759 1992-10-27

Publications (2)

Publication Number Publication Date
EP0595673A1 true EP0595673A1 (de) 1994-05-04
EP0595673B1 EP0595673B1 (de) 1996-12-04

Family

ID=9434868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402421A Expired - Lifetime EP0595673B1 (de) 1992-10-27 1993-10-04 Verfahren und Anlage zur Herstellung von Stickstoff und Sauerstoff

Country Status (7)

Country Link
US (1) US5404725A (de)
EP (1) EP0595673B1 (de)
JP (1) JP3436398B2 (de)
CA (1) CA2109148A1 (de)
DE (1) DE69306362T2 (de)
ES (1) ES2095019T3 (de)
FR (1) FR2697325B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706675A (en) * 1995-08-18 1998-01-13 G & A Associates High efficiency oxygen/air separation system
US5832748A (en) * 1996-03-19 1998-11-10 Praxair Technology, Inc. Single column cryogenic rectification system for lower purity oxygen production
US5761927A (en) * 1997-04-29 1998-06-09 Air Products And Chemicals, Inc. Process to produce nitrogen using a double column and three reboiler/condensers
FR2767317B1 (fr) * 1997-08-14 1999-09-10 Air Liquide Procede de conversion d'un debit contenant des hydrocarbures par oxydation partielle
US6000239A (en) * 1998-07-10 1999-12-14 Praxair Technology, Inc. Cryogenic air separation system with high ratio turboexpansion
FR2782544B1 (fr) * 1998-08-19 2005-07-08 Air Liquide Pompe pour un liquide cryogenique ainsi que groupe de pompage et colonne de distillation equipes d'une telle pompe
DE10157544A1 (de) * 2001-11-23 2003-06-12 Messer Ags Gmbh Verfahren und Vorrichtung zur Erzeugung von Stickstoff aus Luft
CN113686099B (zh) * 2021-08-09 2022-08-09 北京科技大学 一种基于内压缩空分储能装置的物质回收方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE680216A (de) * 1965-05-07 1966-10-28
DE3035844A1 (de) * 1980-09-23 1982-05-06 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur gewinnung von sauerstoff mittlerer reinheit
EP0413631A1 (de) * 1989-08-18 1991-02-20 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Stickstoffgasherstellungsverfahren
EP0446004A1 (de) * 1990-03-06 1991-09-11 Air Products And Chemicals, Inc. Herstellung von ultrahochreinem Sauerstoff bei der Tieftemperatur-Luftzerlegung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461906A1 (fr) * 1979-07-20 1981-02-06 Air Liquide Procede et installation cryogeniques de separation d'air avec production d'oxygene sous haute pression
DE3738559A1 (de) * 1987-11-13 1989-05-24 Linde Ag Verfahren zur luftzerlegung durch tieftemperaturrektifikation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE680216A (de) * 1965-05-07 1966-10-28
DE3035844A1 (de) * 1980-09-23 1982-05-06 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur gewinnung von sauerstoff mittlerer reinheit
EP0413631A1 (de) * 1989-08-18 1991-02-20 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Stickstoffgasherstellungsverfahren
EP0446004A1 (de) * 1990-03-06 1991-09-11 Air Products And Chemicals, Inc. Herstellung von ultrahochreinem Sauerstoff bei der Tieftemperatur-Luftzerlegung

Also Published As

Publication number Publication date
DE69306362T2 (de) 1997-06-26
US5404725A (en) 1995-04-11
EP0595673B1 (de) 1996-12-04
ES2095019T3 (es) 1997-02-01
DE69306362D1 (de) 1997-01-16
CA2109148A1 (fr) 1994-04-28
JPH06207776A (ja) 1994-07-26
FR2697325A1 (fr) 1994-04-29
FR2697325B1 (fr) 1994-12-23
JP3436398B2 (ja) 2003-08-11

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