WO2003012352A2 - Mehrstöckiger kondensator-verdampfer - Google Patents
Mehrstöckiger kondensator-verdampfer Download PDFInfo
- Publication number
- WO2003012352A2 WO2003012352A2 PCT/EP2002/007517 EP0207517W WO03012352A2 WO 2003012352 A2 WO2003012352 A2 WO 2003012352A2 EP 0207517 W EP0207517 W EP 0207517W WO 03012352 A2 WO03012352 A2 WO 03012352A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- passages
- evaporation passages
- evaporation
- circulation
- 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.)
- Ceased
Links
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
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
- F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
- F25J5/005—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger in a reboiler-condenser, e.g. within a 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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
-
- 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
- F25J2250/10—Boiler-condenser with superposed stages
-
- 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
-
- 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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/32—Details on header or distribution passages of heat exchangers, e.g. of reboiler-condenser or plate heat exchangers
Definitions
- the invention relates to a circulation condenser with a condenser block which has liquefaction passages for a heating medium and at least one circulation section with evaporation passages for a liquid, the inlet opening and the outlet opening of each evaporation passage being located on opposite sides of the condenser block and the inlet openings of all evaporation passages of the circulation section below Exit openings of the evaporation passages of the circulation section are arranged.
- liquid oxygen from the low-pressure column is vaporized against gaseous nitrogen from the pressure column in indirect heat exchange in a heat exchanger, the nitrogen condensing.
- a condenser-evaporator system is usually referred to as the main condenser.
- the main condenser is manufactured almost exclusively as a plate heat exchanger and is designed as a falling film evaporator or as a circulation condenser. At a
- Circulating condenser is the condenser block in the liquid bath from which liquid is to be evaporated.
- the liquid enters the evaporation passages of the condenser block from below and is partially evaporated against the heating medium flowing through the liquefaction passages.
- the density of the medium evaporating in the evaporation passages is lower than the density of the surrounding liquid bath, as a result of which a siphon effect is created, so that liquid flows from the liquid bath into the evaporation passages.
- Liquid oxygen is evaporated in the main condenser of an air separation plant. It is important to ensure that the evaporation passages of the
- Condenser blocks flowing liquid oxygen is evaporated to a fraction. This prevents interfering impurities that may be present in the liquid oxygen from accumulating. So be for example, only about 10% of the amount of liquid oxygen flowing into the evaporation passages evaporates and 90% is conveyed as liquid from the outlet openings of the evaporation passages back to the inlet openings of the evaporation passages.
- the part of the condenser block in which such a circulation of liquid is achieved is referred to below as the circulation section.
- the efficiency of a circulation capacitor can, however, be increased by dividing the capacitor block into a plurality of circulation sections arranged one above the other. The advantage of such an arrangement is that the immersion depth of the individual circulation sections is in each case less than in the case of a single high capacitor block. This reduces the hydrostatic pressure in the evaporation passages and the liquid can evaporate more easily.
- This object is achieved by a circulation condenser of the type mentioned at the outset, in which first and second evaporation passages are provided and the inlet openings of the first evaporation passages and the outlet openings of the second evaporation passages are located on the same side of the condenser block.
- the liquid enters the first evaporation passages from below, flows upwards in the evaporation passages, partially evaporates and leaves the first evaporation passages on the opposite side of the condenser block.
- the liquid portion of the liquid-gas mixture emerging from the first evaporation passages flows to the inlet openings of the second evaporation passages arranged on the same side as the outlet openings of the first evaporation passages.
- the liquid then flows through the second evaporation passages back to the side of the condenser block on which the inlet openings in the first evaporation passages are located. During the flow through the second evaporation passages, part of the liquid is again evaporated.
- the liquid is conveyed back and forth between the two opposite sides of the condenser block by means of the first and second evaporation passages and thereby evaporates increasingly.
- Elaborate constructions such as return pipes or return channels for the liquid are therefore no longer necessary.
- the evaporation passages are designed in such a way that all inlet openings of a circulation section are located below the outlet openings of this circulation section. In this way, a liquid level can be selected in front of the inlet openings such that the liquid enters all evaporation passages via the inlet openings, but the outlet openings end in the gas space. This has the advantage that the ascending in the evaporation passages
- Liquid-gas mixture experiences the same back pressure in all evaporation passages, which in turn prevents different circulation rates in the individual evaporation passages. If, in addition, the liquid level in front of the inlet openings is chosen so high that the static pressure at the individual inlet openings differs by less than 20%, preferably less than 10%, particularly preferably less than 5%, almost the same circulation rates are achieved through all evaporation passages.
- All of the first and / or all of the second evaporation passages of a circulation section are preferably each of the same length. All evaporation passages of a circulation section are particularly preferably of the same length. In this way the circulation rate is the same in all evaporation passages, i.e. the same ratio of non-evaporated liquid to evaporated gas quantity is set in each evaporation passage. As a result, the liquid to be evaporated is always mixed well and any impurities do not accumulate in the liquid.
- a circulation section has as many first as second evaporation passages. It is also advantageous if all evaporation passages have the same cross section. This measure ensures that as much liquid is conveyed through the first evaporation passages as through the second evaporation passages.
- the circulation condenser according to the invention is particularly suitable as the main condenser of a low-temperature air separation plant.
- Figure 1 shows the evaporation passages of an inventive
- FIG. 3 shows view A of an alternative embodiment from FIG. 1,
- Figure 4 shows a circulation capacitor with four arranged one above the other
- FIG. 5 the top view of FIG. 4, 6 shows a condenser evaporator system with four arranged in parallel
- Capacitor blocks each consisting of four superimposed
- FIG. 7 shows a section along the line A-A in FIG. 6,
- FIG. 8 shows the top view of the capacitor blocks according to FIG. 6,
- Figure 9 is a section along the line A-A in Figure 6 with an alternative
- FIG. 0 shows the top view of the arrangement of the evaporation passages in accordance with
- FIG. 1 a circulation section of a circulation condenser is shown schematically, the main condenser of a double column in one
- the circulating condenser has a plurality of heat exchange passages arranged in parallel, in which gaseous nitrogen in the indirect
- the liquefaction passages for the nitrogen extend from top to bottom over the entire height of the circulation condenser.
- the first evaporation passages 1 have their inlet openings 2 at the lower left end of the circulation section and their outlet openings 3 at the upper right end.
- the second evaporation passages 11 run in the opposite direction from bottom right to top left.
- the individual evaporation passages 1, 11 run from the respective inlet opening
- FIG. 2 shows the view of the side of the circulation section designated by “A” in FIG.
- the liquefaction passages 4 for the nitrogen and the evaporation passages 1, 11 for the oxygen alternate in order to achieve the best possible heat exchange between the nitrogen and the oxygen.
- the first evaporation passages 1 are located in one half of the circulation section, the second evaporation passages 11 in the other half.
- the inlet openings 2 of the first evaporation passages 1 can be seen in the right half of FIG. 2 and the outlet openings 13 of the second evaporation passages 11 can be seen in the left half of FIG.
- FIG. 1 An alternative arrangement of the evaporation passages 1, 11 is shown in FIG.
- the evaporation passages 1, 11 alternate with the liquefaction passages 4.
- the first evaporation passages 1 and the second evaporation passages 11 are now also arranged alternately, a liquefaction passage 4 being located between a first evaporation passage 1 and a second evaporation passage 11.
- FIG. 4 shows a section through a circulation condenser according to the invention, which is used as the main condenser of a double column of a low-temperature air separation plant.
- the circulation condenser consists of four circulation sections 100, 200, 300, 400 arranged one above the other.
- the liquid containers 120, 220, 320, 420 are connected to one another by means of an overflow line 21 on one side of the condenser block.
- the overflow line 21 has an inlet opening 122, 222, 322, 422 at the level of each circulation section 100, 200, 300, 400, so that liquid enters the overflow pipe 21 into the respective liquid container 120, 220, 320, 420 at a certain fill level in the liquid container 120, 220, 320 of the underlying circulation section 100, 200, 300 is passed.
- the inlet openings 122, 222, 322, 422 in the overflow line 21 are provided at such a height that during operation the maximum fill level in the liquid containers 120, 220, 320, 420 between 50 and 90%, preferably between 60 and 80% of the Height of the respective circulation section 100, 200, 300, 400 is.
- the inlet openings 122, 222, 322, 422 are particularly preferably arranged in the overflow line 21 such that the maximum liquid level in the liquid containers 120, 220, 320, 420 is below the outlet openings 3, 13.
- the liquid containers 120, 220, 320, 420 are also traversed by two gas collecting lines 23, so that the oxygen gas which arises during evaporation in the evaporation passages 1, 11 and flows into the liquid containers 120, 220, 320, 420 from the liquid containers 120, 220, 320, 420 can be withdrawn via the gas manifold 23.
- FIG. 5 the arrangement of the gas manifolds 23 and the overflow pipe 22 is shown in plan view.
- the first and second evaporation passages 1, 11 are arranged in each circulation section 100, 200, 300, 400 as explained above with reference to FIG. 2. 5, the first evaporation passages 1 are in the lower half of the drawing, the second evaporation passages 11 in the upper half of the drawing. Accordingly, liquid is transported from left to right through the first evaporation passages 1 and from right to left through the second evaporation passages 11.
- the gas collecting lines 23 are arranged such that they are not in front of the outlet openings of the evaporation passages 1, 11.
- a liquid overflow 21 is therefore only necessary on one side of the condenser block.
- This overflow 21 is preferably arranged on the side of the condenser block on which the supply 25 of the liquid oxygen takes place at the top.
- the nitrogen passages extend over the entire height of the condenser block, that is to say over all circulation sections 100, 200, 300, 400.
- the gaseous nitrogen is fed to the nitrogen passages via the feed line 26 and withdrawn as a liquid at the lower end of the block via line 27.
- the gaseous nitrogen is distributed over the nitrogen passages via a collector / distributor 28 connected to the condenser block.
- FIGS. 6 to 8 show a further variant of the invention
- Circulating capacitor shown This consists of four capacitor blocks 61, 62, 63, 64, which in turn each have four circulation sections 100, 200, 300, 400.
- Two capacitor blocks 61, 62 and 63, 64 are arranged directly next to each other, so that the respective evaporation passages 1, 11 run parallel to one another.
- the resulting double blocks 61, 62 and 63, 64 face each other with their entry and exit openings 2, 3, 12, 13 (see FIG. 8).
- the arrangement of the first and second evaporation passages 1, 11 again corresponds to FIG. 2.
- the capacitor blocks 61 and 62 or 63 and 64 are arranged next to one another in such a way that their block halves provided with the first evaporation passages 1 adjoin one another.
- the two double blocks 61, 62 and 63, 64 each have a common liquid container 20.
- a liquid container 30 common to each block for each circulation section 200, 300, 400.
- the outer ones Liquid containers 20 only collect the circulating liquid which is passed through the second evaporation passages 11 into the liquid containers 20 and convey them back into the central liquid container 30 via the first evaporation passages 1.
- the gas-liquid mixture emerging from the first evaporation passages 1 is supplied essentially in the middle of the liquid container 30.
- the gas collecting lines 23 are therefore in the outer region of the liquid container 30 near the inlet openings into the second Evaporation passages 11 arranged. In these zones, the flow rate of the gas-liquid mixture emerging from the first evaporation passages 1 has calmed down to such an extent that practically no liquid is entrained into the gas collecting lines 23.
- FIGS. 9 and 10 show an alternative arrangement of the evaporation passages 1, 11 with an arrangement of the condenser blocks 61, 62, 63, 64 according to FIG. 6.
- a circulation section is composed of the corresponding sections 100, 200, 300, 400 of the four capacitor blocks 61, 62, 63, 64.
- each of the blocks 61, 62, 63, 64 has first evaporation passages 1 and second evaporation passages 11.
- first evaporation passages 1 and backflow through second evaporation passages 11 is not realized in each individual block 61, 62, 63, 64, but rather in that the two adjacent condenser blocks 61, 62 and 63, 64 are each rotated through 180 ° , be put together.
- the evaporation passages of the condenser blocks 61 and 63 correspond to the second evaporation passages 11 and the evaporation passages in the condenser blocks 62 and 64 correspond to the first evaporation passages 1.
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)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10137103.9 | 2001-07-30 | ||
| DE10137103A DE10137103A1 (de) | 2001-07-30 | 2001-07-30 | Mehrstöckiger Kondensator-Verdampfer |
| EP01122110.8 | 2001-09-14 | ||
| EP01122110A EP1283401A1 (de) | 2001-07-30 | 2001-09-14 | Mehrstöckiger Kondensator-Verdampfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003012352A2 true WO2003012352A2 (de) | 2003-02-13 |
| WO2003012352A3 WO2003012352A3 (de) | 2003-04-17 |
Family
ID=26009811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/007517 Ceased WO2003012352A2 (de) | 2001-07-30 | 2002-07-05 | Mehrstöckiger kondensator-verdampfer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1283401A1 (de) |
| DE (1) | DE10137103A1 (de) |
| WO (1) | WO2003012352A2 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011113671A1 (de) | 2011-09-20 | 2013-03-21 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
| DE102011113668A1 (de) | 2011-09-20 | 2013-03-21 | Linde Aktiengesellschaft | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
| WO2013041229A1 (de) | 2011-09-20 | 2013-03-28 | Linde Aktiengesellschaft | Verfahren und vorrichtung zur tieftemperaturzerlegung von luft |
| DE102015009563A1 (de) | 2015-07-23 | 2017-01-26 | Linde Aktiengesellschaft | Luftzerlegungsanlage und Luftzerlegungsverfahren |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10328746A1 (de) * | 2003-06-25 | 2005-01-13 | Behr Gmbh & Co. Kg | Vorrichtung zum mehrstufigen Wärmeaustausch und Verfahren zur Herstellung einer derartigen Vorrichtung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2566310A (en) * | 1946-01-22 | 1951-09-04 | Hydrocarbon Research Inc | Tray type heat exchanger |
| FR2456924A2 (fr) * | 1979-05-18 | 1980-12-12 | Air Liquide | Ensemble d'echange thermique du genre echangeur de chaleur a plaques |
| JP3527609B2 (ja) * | 1997-03-13 | 2004-05-17 | 株式会社神戸製鋼所 | 空気分離方法および装置 |
| DE19939294A1 (de) * | 1999-08-19 | 2001-02-22 | Linde Ag | Mehrstöckiger Umlaufkondensator |
-
2001
- 2001-07-30 DE DE10137103A patent/DE10137103A1/de not_active Withdrawn
- 2001-09-14 EP EP01122110A patent/EP1283401A1/de not_active Withdrawn
-
2002
- 2002-07-05 WO PCT/EP2002/007517 patent/WO2003012352A2/de not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011113671A1 (de) | 2011-09-20 | 2013-03-21 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
| DE102011113668A1 (de) | 2011-09-20 | 2013-03-21 | Linde Aktiengesellschaft | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
| EP2573492A1 (de) | 2011-09-20 | 2013-03-27 | Linde Aktiengesellschaft | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
| WO2013041229A1 (de) | 2011-09-20 | 2013-03-28 | Linde Aktiengesellschaft | Verfahren und vorrichtung zur tieftemperaturzerlegung von luft |
| DE102015009563A1 (de) | 2015-07-23 | 2017-01-26 | Linde Aktiengesellschaft | Luftzerlegungsanlage und Luftzerlegungsverfahren |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1283401A1 (de) | 2003-02-12 |
| WO2003012352A3 (de) | 2003-04-17 |
| DE10137103A1 (de) | 2003-02-13 |
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