EP1284403A1 - Verfahren und Vorrichtung zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft - Google Patents
Verfahren und Vorrichtung zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft Download PDFInfo
- Publication number
- EP1284403A1 EP1284403A1 EP01125721A EP01125721A EP1284403A1 EP 1284403 A1 EP1284403 A1 EP 1284403A1 EP 01125721 A EP01125721 A EP 01125721A EP 01125721 A EP01125721 A EP 01125721A EP 1284403 A1 EP1284403 A1 EP 1284403A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- column
- oxygen
- air
- stream
- pressure column
- 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
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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
- F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
-
- 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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/04084—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression 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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression 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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
-
- 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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04236—Integration of different exchangers in a single core, so-called integrated cores
-
- 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
- F25J3/04284—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
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low 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
- F25J3/04284—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
- F25J3/04309—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 nitrogen
- F25J3/04315—Lowest pressure or impure nitrogen, so-called waste nitrogen expansion
-
- 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
- F25J3/04406—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 dual pressure main column system
- F25J3/0443—A main column system not otherwise provided, e.g. a modified double column flowsheet
-
- 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
- F25J2200/20—Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere
-
- 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
- F25J2200/70—Refluxing the column with a condensed part of the feed stream, i.e. fractionator top is stripped or self-rectified
-
- 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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
Definitions
- the invention relates to a method for generating oxygen by Cryogenic air separation in a distillation system that uses an oxygen column has, a first air flow relaxing work and at least partially another feed stream is introduced into the oxygen column, the Oxygen content is at least equal to that of the feed air, on the head of the Oxygen column is abandoned, at least one oxygen product stream from the lower area of the oxygen column is removed and a residual gas flow from the head the oxygen column is withdrawn.
- the invention has for its object a method and a device specify that with relatively little equipment and / or energy expenditure allow a particularly high liquid production, in particular the production corresponding amounts of liquid oxygen and / or liquid nitrogen in the Distillation system should be possible.
- This object is achieved in that the residual gas flow from the top of the Oxygen column is relaxed while performing work. In this way, additional cold can be obtained for product liquefaction without the high outlay of a additional externally driven compressor or even a circuit would be necessary.
- the oxygen column is under a superatmospheric pressure operated.
- the operating pressure of the oxygen column is at least, for example 1.7 bar, preferably 1.7 to 3.5 bar, most preferably 2.0 to 3.0 bar.
- the oxygen column is a single column educated. This is achieved through indirect heat exchange with a heating medium boiled. A second air stream is preferably used as the heating means. This can, for example, together with the first airflow to the required Pressure to be compressed. The second airflow condenses with the indirect one Heat exchange partially or completely and is then as another Feed current is given to the top of the oxygen column.
- the distillation system has two columns, a high pressure column and a low pressure column, over a condenser evaporator have a heat-exchanging connection.
- the oxygen column is through the low-pressure column of the two-pillar system was formed.
- a second airflow is in initiated the high pressure column.
- High pressure column and low pressure column can be used as Double column with main condenser in between (condenser-evaporator) be trained.
- the further feed stream for the oxygen column (low pressure column) is preferably in this case by a liquid oxygen-enriched fraction formed from the lower area of the high pressure column. This generally indicates an oxygen concentration of, for example, 20 to 41 mol%, preferably 21 to 30 mol%.
- the oxygen-enriched fraction from the high pressure column In deviation from a classic Linde double column, the oxygen-enriched fraction from the high pressure column not at an intermediate point fed in, but abandoned at the top of the low pressure column.
- the residual gas flow, which is removed from the head of the low-pressure column is no longer pure Nitrogen product, but has an oxygen content which is less than 21 mol%, but is at least 5 mol%, in particular at least 10 mol%.
- the oxygen content of the residual gas stream is, for example, 14 to 18 mol%, preferably 15 to 17 mol%.
- the cooling capacity in the work-relieving relaxation of the first air stream can be increased in both variants of the invention in that the first air flow is densified upstream of its work-relieving relaxation.
- the Post-compaction can be done separately or together with one or more others Air flows take place. For example, the total air can be compressed. At least part of the work-related relaxation of the first air stream and / or the residual gas flow generated mechanical energy can for Post-compression can be used. This is preferably a direct one mechanical coupling between the corresponding relaxation machine and appropriate post-compressor. If two post-compressors are provided are connected in parallel or in series. Instead of mechanical Coupling can use one or more generator turbines.
- the invention also relates to a device for the low-temperature separation of air according to claim 8.
- compressed and cleaned air is introduced via line 1. It is under a pressure of, for example, 10.5 bar and is divided into a first air stream 2 and a second air stream 3. Both are cooled in a main heat exchanger 4.
- the first airflow becomes the main heat exchanger at an intermediate temperature (between the warm and the cold end) removed via line 21 and in a first relaxation machine 22 working to a pressure of about 3 bar relaxed.
- the first air stream which is relaxed during work, is wholly or partially fed via line 23 of the low pressure column 7 of a double column system, the also a high-pressure column 6 and a main condenser (condenser-evaporator) 8 has.
- the low pressure column here forms the oxygen column in the sense of the invention.
- a portion (generally 0 to 60%, e.g. 50%) of the in 22nd Relaxed air can be supplied to the low pressure column 7 via an air bypass line 46 to be led past.
- the second air stream 3 becomes the cold end of the main heat exchanger 4 cooled. From there it flows via line 9 into the high pressure column 6.
- the gaseous nitrogen 10 obtained at the top of the high pressure column is in the Main capacitor 8 condenses.
- the liquid 11 thus formed becomes one first part 12 as a return to the high pressure column and a second Part 13 obtained as a liquid product (LIN).
- Oxygenated sump liquid 5 the high pressure column 6 is subcooled in the main heat exchanger 4 and then via line 14 and throttle valve 15 to the head of the low pressure column 7 as another Surrendered current. (As an alternative to that shown in the drawing Procedures can be subcooling in a separate heat exchanger be made.)
- the bottom of the low-pressure column 7 becomes oxygen 16 - in the present example exclusively in liquid form - taken as oxygen product stream 16.
- the bypass line 24 is used to control the Cooling capacity of the expansion machine 19.
- the warm residual gas 25 can be as Regeneration gas for a device (not shown) for cleaning the feed air be used.
- the two expansion machines 22, 19 are preferably powered by expansion turbines educated. All known means come in as braking devices 26, 27 Question; in the example of Figure 1 are dissipative brakes or generators used.
- the first relaxation machine 22 in FIG Post-compressor (turbine booster) 227 formed. This serves to densify the first air flow 2, 229 to a pressure higher than that prevailing in line 1 Pressure is.
- the first air stream 202 is heated in a heat exchanger 228, compressed in the post-compressor 227, passed through an after-cooler 230, in the Heat exchanger 228 cooled again and via line 231 analog to FIG warm end of the main heat exchanger 4 supplied.
- the heat exchanger 228 is used for optimization, but can also be omitted to reduce the cost of the apparatus to reduce.
- a further post-compressor 332 is connected between post-compressor 227 and post-cooler 230, which is driven by second expansion machine 19 and causes a further pressure increase in first air stream 231.
- a cooler between the two post-compressors was omitted in the example.
- a further aftercooler (intercooler) could be arranged at this point.
- Another possible modification consists in the use of a heat exchanger, as is shown with the reference number 228 in FIG. 2.
- the first post-compressor 227 could also be coupled to the second expansion machine 19.
- the high pressure column can be omitted, as shown in Figure 4 .
- the distillation system is formed by an oxygen column designed as a single column 407 with a sump reboiler 408.
- the second air stream 409 is condensed under a pressure of approximately 10 bar in the liquefaction chamber of the sump reboiler 408.
- the liquefied air 405 is subcooled in the main heat exchanger 4 analogously to the bottom liquid of the high-pressure column in FIG.
- the remaining method steps are the same as in FIG. 1.
- the turbine booster circuits of FIGS. 2 and 3 can also be applied to the column configuration shown in FIG.
- Figure 5 is based on the embodiment of Figure 3 and shows a number of additional options that - as shown - can be realized together or individually within the scope of the invention.
- the supercooling counterflow 533 in which the bottom liquid 5 of the High pressure column 6 is cooled against residual gas 17 from the top of the low pressure column 7, is designed as a separate heat exchanger and not in the main heat exchanger 504 integrated.
- Part of the gaseous nitrogen obtained at the top of the high-pressure column 6 becomes not led via line 10 to the main capacitor 8, but flows via line 534 to the main heat exchanger 504 and is ultimately used as a gaseous pressure product 547 (PGAN) subtracted.
- GPN gaseous pressure product 547
- Liquid nitrogen from the high pressure column 6 or the Main capacitor 8 is not only obtained directly as a liquid product 513, but also also supplied via line 535 to an internal compression. To do this, the liquid is in a pump 536 brought to the desired high product pressure, via line 537 to the main heat exchanger 504, there against the second air stream 3 evaporates (or pseudo-evaporates if the product pressure is supercritical) and finally warmed to ambient temperature. Line 538 is now on Nitrogen product (PGAN-IC) available under particularly high pressure.
- PDN-IC Nitrogen product
- an oxygen product stream can be internally compressed.
- liquid oxygen from the lower region of the Low pressure column 7 removed (from the sump or - as shown - from above of the sump), by means of a pump 540 to the desired high product pressure brought, led via line 541 to the main heat exchanger 504, there against the second air stream 3 evaporates (or pseudo-evaporates if the product pressure is supercritical) and finally warmed to ambient temperature.
- an oxygen product (GOX-IC) is now available under high pressure.
- the supercooled oxygen-enriched liquid 14 from the high pressure column 6 is after their relaxation, first introduced into a separator (phase separator) 543. From there, only the liquid portion 544 flows as a further feed stream to the top of the Low pressure column 7, while the steam 545 is introduced directly into the residual gas line 17 becomes.
- the phase separation can alternatively to that shown in the drawing Embodiment take place in a separator arranged inside the column, or in a simple channel, preferably at the top of the low pressure column. A part of the air 23 relaxed in FIG the low pressure column 7 are passed.
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)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
Description
- Figur 1
- ein vereinfachtes Schema eines ersten Ausführungsbeispiels der Erfindung in Form eines Doppelsäulen-Systems,
- Figur 2
- eine Abwandlung mit einem Turbinen-Booster,
- Figur 3
- eine weitere Abwandlung mit zwei Turbinen-Boostern,
- Figur 4
- ein Einzelsäulen-System gemäß der Erfindung und
- Figur 5
- ein weiteres Ausführungsbeispiel mit Doppelsäule und Innenverdichtung.
Claims (8)
- Verfahren zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft in einem Destilliersystem, das eine Sauerstoffsäule aufweist, wobeiein erster Luftstrom (2, 21, 229, 231) arbeitsleistend entspannt (22) und mindestens teilweise in die Sauerstoffsäule (7, 407) eingeleitet wird,ein weiterer Einsatzstrom (5, 14, 405, 414), dessen Sauerstoffgehalt mindestens gleich demjenigen der Einsatzluft ist, auf den Kopf der Sauerstoffsäule (7, 407) aufgegeben wird,mindestens ein Sauerstoff-Produktstrom (16, 539) aus dem unteren Bereich der Sauerstoffsäule (7, 407) entnommen wird undein Restgasstrom (17, 18, 20, 25) vom Kopf der Sauerstoffsäule (7, 407) abgezogen wird,
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Sauerstoffsäule als Einzelsäule (407) ausgebildet ist und durch indirekten Wärmeaustausch (408) mit einem Heizmittel (409) aufgekocht wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass ein zweiter Luftstrom (409) als Heizmittel eingesetzt wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass der zweite Luftstrom (414) stromabwärts des indirekten Wärmeaustauschs (408) zum Aufkochen der Einzelsäule (407) mindestens teilweise als weiterer Einsatzstrom für die Einzelsäule (407) eingesetzt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Sauerstoffsäule als Niederdrucksäule (7) eines Zwei-Säulen-Systems ausgebildet ist, das außerdem eine Hochdrucksäule (6) aufweist, wobei die Niederdrucksäule (7) und die Hochdrucksäule (6) über einen Kondensator-Verdampfer (8) in wärmetauschender Verbindung stehen und ein zweiter Luftstrom (3, 9) in die Hochdrucksäule (6) eingeleitet wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass eine flüssige sauerstoffangereicherte Fraktion (5) aus dem unteren Bereich der Hochdrucksäule (6) abgezogen und als weiterer Einsatzstrom (14) für die Niederdrucksäule (7) eingesetzt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der erste Luftstrom (202) stromaufwärts seiner arbeitsleistenden Entspannung (22) nachverdichtet (227, 332) wird, wobei mindestens ein Teil der bei der arbeitsleistenden Entspannung (22, 19) des ersten Luftstroms (231) und/oder des Restgasstroms (18) erzeugte mechanische Energie für die Nachverdichtung eingesetzt wird.
- Vorrichtung zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft mit einem Destilliersystem, das eine Sauerstoffsäule aufweist,mit einer ersten Luftleitung (2, 21, 23, 229, 231), die durch eine erste Entspannungsmaschine (22) in die Sauerstoffsäule (7, 407) führt,mit einer weiteren Einsatzleitung (5, 14, 405, 414) zur Einleitung eines weiteren Einsatzstroms, dessen Sauerstoffgehalt mindestens gleich demjenigen der Einsatzluft ist, in den Kopf der Sauerstoffsäule (7, 407),mit einer Sauerstoff-Produktleitung (16, 539), die mit dem unteren Bereich der Sauerstoffsäule (7, 407) verbunden ist undmit einer Restgasleitung (17, 18, 20, 25), die mit dem Kopf der Sauerstoffsäule (7, 407) verbunden ist,
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139097 | 2001-08-09 | ||
DE10139097A DE10139097A1 (de) | 2001-08-09 | 2001-08-09 | Verfahren und Vorrichtung zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1284403A1 true EP1284403A1 (de) | 2003-02-19 |
EP1284403B1 EP1284403B1 (de) | 2005-12-21 |
Family
ID=7694892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01125721A Expired - Lifetime EP1284403B1 (de) | 2001-08-09 | 2001-10-27 | Verfahren und Vorrichtung zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1284403B1 (de) |
AT (1) | ATE313772T1 (de) |
DE (2) | DE10139097A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007104449A1 (de) * | 2006-03-15 | 2007-09-20 | Linde Aktiengesellschaft | Vefahren und vorrichtung zur tieftemperaturzerlegung von luft |
EP2520886A1 (de) * | 2011-05-05 | 2012-11-07 | Linde AG | Verfahren und Vorrichtung zur Erzeugung eines gasförmigen Sauerstoff-Druckprodukts durch Tieftemperaturzerlegung von Luft |
WO2014154339A2 (de) | 2013-03-26 | 2014-10-02 | Linde Aktiengesellschaft | Verfahren zur luftzerlegung und luftzerlegungsanlage |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1229561B (de) * | 1962-12-21 | 1966-12-01 | Linde Ag | Verfahren und Vorrichtung zum Zerlegen von Luft durch Verfluessigung und Rektifikation mit Hilfe eines Inertgaskreislaufes |
US4818262A (en) * | 1985-07-15 | 1989-04-04 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Air distillation process and plant |
US4869742A (en) * | 1988-10-06 | 1989-09-26 | Air Products And Chemicals, Inc. | Air separation process with waste recycle for nitrogen and oxygen production |
EP0518491A1 (de) * | 1991-05-14 | 1992-12-16 | Air Products And Chemicals, Inc. | Hochdruck-Lufttrennungsverfahren mit Gewinnung von Flüssigkeit |
US5355681A (en) * | 1993-09-23 | 1994-10-18 | Air Products And Chemicals, Inc. | Air separation schemes for oxygen and nitrogen coproduction as gas and/or liquid products |
EP0672877A1 (de) * | 1994-03-15 | 1995-09-20 | The BOC Group plc | Kryogenische Lufttrennung |
-
2001
- 2001-08-09 DE DE10139097A patent/DE10139097A1/de not_active Withdrawn
- 2001-10-27 EP EP01125721A patent/EP1284403B1/de not_active Expired - Lifetime
- 2001-10-27 AT AT01125721T patent/ATE313772T1/de not_active IP Right Cessation
- 2001-10-27 DE DE50108467T patent/DE50108467D1/de not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1229561B (de) * | 1962-12-21 | 1966-12-01 | Linde Ag | Verfahren und Vorrichtung zum Zerlegen von Luft durch Verfluessigung und Rektifikation mit Hilfe eines Inertgaskreislaufes |
US4818262A (en) * | 1985-07-15 | 1989-04-04 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Air distillation process and plant |
US4869742A (en) * | 1988-10-06 | 1989-09-26 | Air Products And Chemicals, Inc. | Air separation process with waste recycle for nitrogen and oxygen production |
EP0518491A1 (de) * | 1991-05-14 | 1992-12-16 | Air Products And Chemicals, Inc. | Hochdruck-Lufttrennungsverfahren mit Gewinnung von Flüssigkeit |
US5355681A (en) * | 1993-09-23 | 1994-10-18 | Air Products And Chemicals, Inc. | Air separation schemes for oxygen and nitrogen coproduction as gas and/or liquid products |
EP0672877A1 (de) * | 1994-03-15 | 1995-09-20 | The BOC Group plc | Kryogenische Lufttrennung |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007104449A1 (de) * | 2006-03-15 | 2007-09-20 | Linde Aktiengesellschaft | Vefahren und vorrichtung zur tieftemperaturzerlegung von luft |
EP2520886A1 (de) * | 2011-05-05 | 2012-11-07 | Linde AG | Verfahren und Vorrichtung zur Erzeugung eines gasförmigen Sauerstoff-Druckprodukts durch Tieftemperaturzerlegung von Luft |
WO2014154339A2 (de) | 2013-03-26 | 2014-10-02 | Linde Aktiengesellschaft | Verfahren zur luftzerlegung und luftzerlegungsanlage |
WO2014154339A3 (de) * | 2013-03-26 | 2015-01-08 | Linde Aktiengesellschaft | Verfahren zur luftzerlegung und luftzerlegungsanlage |
Also Published As
Publication number | Publication date |
---|---|
EP1284403B1 (de) | 2005-12-21 |
ATE313772T1 (de) | 2006-01-15 |
DE10139097A1 (de) | 2003-02-20 |
DE50108467D1 (de) | 2006-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1067345B1 (de) | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft | |
DE69413918T2 (de) | Tieftemperaturzerlegung von Luft | |
DE69509841T2 (de) | Verfahren und Vorrichtung zur Herstellung von Sauerstoff | |
EP1243882B1 (de) | Argongewinnung mit einem Drei-Säulen-System zur Luftzerlegung und einer Rohargonsäule | |
EP1284404A1 (de) | Verfahren und Vorrichtung zur Gewinnung eines Druckprodukts durch Tieftemperaturzerlegung von Luft | |
EP1139046A1 (de) | Verfahren und Vorrichtung zur Gewinnung eines Druckprodukts durch Tieftemperaturzerlegung von Luft | |
EP1134525A1 (de) | Verfahren zur Gewinnung von gasförmigem und flüssigem Stickstoff mit variablem Anteil des Flüssigprodukts | |
DE102010052545A1 (de) | Verfahren und Vorrichtung zur Gewinnung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft | |
EP1357342A1 (de) | Drei-Säulen-System zur Tieftemperaturzerlegung mit Argongewinnung | |
DE10013073A1 (de) | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft | |
EP2603754B1 (de) | Verfahren und vorrichtung zur gewinnung von drucksauerstoff und druckstickstoff durch tieftemperaturzerlegung von luft | |
EP3290843A2 (de) | Verfahren und vorrichtung zur erzeugung von druckstickstoff und flüssigstickstoff durch tieftemperaturzerlegung von luft | |
DE69209835T2 (de) | Einsäulenluftzerlegungszyklus und dessen Integration in Gasturbinen | |
DE19609490A1 (de) | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft | |
EP4133227A2 (de) | Verfahren zur tieftemperaturzerlegung von luft, luftzerlegungsanlage und verbund aus wenigstens zwei luftzerlegungsanlagen | |
EP2963369B1 (de) | Verfahren und vorrichtung zur tieftemperaturzerlegung von luft | |
EP3924677A1 (de) | Verfahren und anlage zur bereitstellung eines oder mehrerer sauerstoffreicher, gasförmiger luftprodukte | |
EP1227288A1 (de) | Drei-Säulen-System zur Tieftemperaturzerlegung von Luft | |
WO2017108187A1 (de) | Verfahren und vorrichtung zur erzeugung von reinem stickstoff und reinem sauerstoff durch tieftemperaturzerlegung von luft | |
EP1199532B1 (de) | Drei-Säulen-System zur Tieftemperatur-Zerlegung von Luft | |
EP1284403B1 (de) | Verfahren und Vorrichtung zur Erzeugung von Sauerstoff durch Tieftemperatur-Zerlegung von Luft | |
EP1134524B1 (de) | Verfahren zur Gewinnung von gasförmigem Stickstoff | |
EP0878677A1 (de) | Verfahren und Vorrichtung zur Gewinnung von Stickstoff durch Tieftemperaturzerlegung von Luft | |
EP3343159A1 (de) | Verfahren und vorrichtung zur erzeugung von gasförmigem sauerstoff und gasförmigem druckstickstoff | |
DE4441920C1 (de) | Verfahren und Vorrichtung zur Gewinnung von Stickstoff durch Tieftemperaturzerlegung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20030718 |
|
AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
17Q | First examination report despatched |
Effective date: 20040218 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051221 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051221 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051221 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051221 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50108467 Country of ref document: DE Date of ref document: 20060126 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060321 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060321 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060401 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20060329 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060522 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20061019 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20061025 Year of fee payment: 6 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061031 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061031 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061031 |
|
26N | No opposition filed |
Effective date: 20060922 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
BERE | Be: lapsed |
Owner name: LINDE A.G. Effective date: 20061031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061027 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20071027 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061027 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080501 Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051221 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20080630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20061010 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051221 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071027 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20061031 |