WO2000063629A1 - Vorrichtung zur thermischen behandlung von material - Google Patents
Vorrichtung zur thermischen behandlung von material Download PDFInfo
- Publication number
- WO2000063629A1 WO2000063629A1 PCT/EP2000/002644 EP0002644W WO0063629A1 WO 2000063629 A1 WO2000063629 A1 WO 2000063629A1 EP 0002644 W EP0002644 W EP 0002644W WO 0063629 A1 WO0063629 A1 WO 0063629A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- branch
- section
- deflection chamber
- ascending
- deflection
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 27
- 230000001174 ascending effect Effects 0.000 claims abstract description 46
- 239000013072 incoming material Substances 0.000 claims abstract 2
- 238000001354 calcination Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000002156 mixing Methods 0.000 description 16
- 235000012054 meals Nutrition 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 9
- 239000000446 fuel Substances 0.000 description 9
- 239000007962 solid dispersion Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 101100008046 Caenorhabditis elegans cut-2 gene Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/2016—Arrangements of preheating devices for the charge
- F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
- F27B7/2033—Arrangements of preheating devices for the charge consisting of a single string of cyclones with means for precalcining the raw material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/434—Preheating with addition of fuel, e.g. calcining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Definitions
- the invention relates to a device for the treatment of material, in particular for the thermal and / or chemical treatment of meal-like raw material.
- Devices of this type are used in particular for calcining flour-shaped cement raw material.
- the exhaust gas stream from a sintering stage (furnace) and the exhaust air stream from a cooling stage (tertiary air) are used together in the ascending pipeline branch of a calcining stage supplied with fuel for calcining the raw meal.
- the gas-solid dispersion in the calcining stage is diverted from the ascending pipeline branch into a descending pipeline branch and introduced into the bottom cyclone of a cyclone preheater in order to separate the calcined raw meal from the gas stream.
- the aim is to carry out an optimal mixing and swirling of the gas-raw meal-fuel dispersion in the calcination stage.
- the burnout of the fuel and the NO ⁇ reduction of the calciner exhaust gases can be improved on the one hand (and at the same time the emission of unburned components reduced) and on the other hand the degree of calcination can be increased by an improved heat transfer from the fuel to the good.
- EP-B-0 497 937 discloses a calcining stage in which a swirl chamber is provided in the region of its flow deflection, in which at least some of the coarse-grained fractions are separated from the gas-solid dispersion and then flow into one of the swirl chambers upstream and / or downstream branch of the calcination stage is reintroduced.
- a swirl chamber is also known from EP-A-0 526 770. In its upper area it has an opening for the tangential entry of the gas-solid dispersion and on its underside a central opening for the discharge of the swirled gas-solid dispersion.
- a device for calcining powdery material is also known, in which a swirl head is provided in the deflection area of an ascending or descending pipeline branch.
- a double deflection is also known from practice, in which the ascending branch of the pipe opens into a separating funnel from above via a 180 ° elbow. From this funnel, the dispersion is discharged upwards via a second 180 ° elbow, which merges into the descending branch of the pipeline. A part of the coarser solid particles is in the funnel discarded below and recirculated to the ascending pipeline branch. This double redirection results in a very good degree of mixing, but also requires a higher pressure drop.
- DE-A-27 51 876 shows a calcining stage which is shown very schematically in an apparently angular line. However, further structural details of the deflection zone cannot be gathered from this diagram.
- the invention is therefore based on the object of optimizing a device of the type mentioned at the outset with regard to the degree of mixing and pressure loss.
- the deflection zone is formed by a deflection chamber which has a first section which is widened compared to the cross section of the ascending branch of the branch and which extends upwards through a substantially transverse to the direction of flow of the via the ascending branch of the branch into the Deflection chamber entering material oriented baffle is limited and is followed by at least a second section that runs obliquely downwards and tapers conically to the cross section of the descending pipeline branch.
- the solution to this problem consists in that the deflection zone is formed by a deflection chamber which has a first section which widens conically with respect to the ascending branch of the pipeline and a second section which is essentially transverse to the direction of flow of the ascending section Pipe branch into the deflection chamber baffle oriented material is limited, the descending pipeline branch protruding into the deflection chamber in the manner of an immersion tube is guided obliquely downward out of the deflection chamber.
- FIG. 1 shows a schematic illustration of a device for treating material according to a first exemplary embodiment
- FIG. 9 shows a schematic illustration of a device for treating material according to a second exemplary embodiment
- FIG. 16 shows a schematic illustration of a device for treating material in accordance with a third exemplary embodiment.
- the device for treating material shown in FIG. 1 is designed as a device for calcining material, in particular cement raw material. It essentially consists of an ascending pipeline branch 1, a deflection chamber 2 and a descending pipeline branch 3.
- the material which is, for example, cement raw meal, is preheated in an upstream preheater, of which only one cyclone 4 is shown in FIG. 1, and then via a line 11 at one or more points in the ascending pipeline branch 1 given up.
- an upstream preheater of which only one cyclone 4 is shown in FIG. 1, and then via a line 11 at one or more points in the ascending pipeline branch 1 given up.
- an exhaust gas stream 5 from a sintering stage, in particular an oven 6, and, for example, tertiary air 7 coming from a cooler 12 are introduced into the ascending pipeline branch 1.
- one or more fuel supply points 8 are provided in the area of the ascending branch 1.
- one or more raw meal supply points 15 can be arranged in the region of the ascending branch 1.
- the material is introduced in the form of a gas raw meal fuel dispersion from the ascending branch 1 via the deflection chamber 2 and the descending branch 3 into a cyclone 9 for the purpose of separating the calcined raw meal from the gas stream.
- the gas stream reaches the preheater via line 10 and the calcined material reaches line 6 via line 13.
- deflection chamber 2 according to the first exemplary embodiment shown in FIG. 1 are explained in more detail below with reference to FIGS. 2 to 8: All variants have in common that the deflection chamber 2 has a baffle wall 2a which is oriented essentially transversely to the direction of flow of the material entering the deflection chamber 2 via the ascending pipeline branch 1.
- the deflection chamber 2 expediently has a first section 2b which is widened compared to the cross section of the ascending pipeline branch and an adjoining second section 2c which tapers conically to the cross section of the descending pipeline branch 3.
- the second section 2c is oriented obliquely downwards in the exemplary embodiments shown.
- the ascending pipeline branch 1 opens into the deflection chamber 2 as a dip pipe, the ascending pipeline branch 1 at a distance from a lateral boundary 2d of the first section 2b, i.e. centrally, protrudes into the deflection chamber.
- the cross section of the ascending branch of the pipeline is usually circular. However, the cross section can also be square, in particular square.
- the gas-raw meal fuel dispersion entering the deflection chamber 2 is deflected by at least 135 ° without separation of particles and is discharged over the entire circumference of the deflection chamber into the descending pipeline branch 3.
- the second variant according to FIG. 3 differs in particular by the ascending pipeline branch 1 projecting into the deflection chamber 2.
- This ascending pipeline branch is again designed as a dip tube, but is arranged eccentrically to the deflection chamber 2.
- the immersion tube borders directly on the lateral boundary 2d of the first section 2b of the deflection chamber 2.
- the conically tapering second section 2b of the deflection chamber 2 is oriented much steeper downward than the second section of the exemplary embodiment according to FIG.
- the ascending pipe branch 1 which is designed as an immersion tube, is conically tapered in the region of the deflection chamber. In this way, a higher rate of entry of the gas-solid fuel dispersion into the deflection chamber 2 can be achieved.
- the deflection chamber 2 according to FIG. 5 is identical to the deflection chamber according to FIG. 2. Only the ascending pipeline branch 1 opening into the deflection chamber is not designed as a dip tube in this variant.
- the deflection chamber shown in FIG. 6 corresponds to the deflection chamber according to FIG. 2, only the baffle wall 2a not being flat, but rather elliptically curved. In both cases, however, the baffle extends essentially transversely to the direction of flow 14 of the material entering the deflection chamber 2 via the ascending pipe branch 1.
- 7 and 8 show two further variants which have an ascending pipeline branch, the deflection chamber 2 and two descending pipeline branches 3a, 3b. Devices of this type are particularly useful when the gas subsequently flows through two preheater strands arranged parallel to one another.
- the baffle wall 2a is elliptically curved and in the variant according to FIG. 8 it is flat.
- the deviation from the mean value of the 0 2 ⁇ concentration is related to the maximum possible deviation and this size is averaged over the area.
- Variant according to Figure 4 1.75 mbar 0.927 Variant according to Figure 5 0.74 mbar 0.805 It can be seen from the test results above that the design variants according to FIGS. 2 to 5 result in a significantly lower pressure loss than the double deflection according to the prior art. In particular, the exemplary embodiment according to FIG. 4 also shows very good mixing properties.
- the variants of the deflection chamber described above are characterized by smaller dimensions and a smaller space requirement and ultimately also by a simpler construction.
- the raw meal is diverted downward by the obliquely downward-directed second section 2b of the deflection chamber, which reduces the risk of caking.
- FIG. 9 shows a schematic illustration of a device for treating material, in particular for calcining raw cement material, according to a second exemplary embodiment. It differs from the device according to Fig.l only by the design of the deflection chamber 2 '.
- the deflection chambers 2 'of the variants according to FIGS. 10 to 15 see a first section 2'b which widens conically with respect to the ascending pipeline branch and a second section which has the baffle wall 2'a. cut 2'c.
- the descending pipeline branch 3 is preferably designed as an immersion tube.
- the baffle wall 2'a extends essentially transversely to the flow direction 14 of the material entering the deflection chamber 2 'via the ascending pipeline branch 1.
- the expanding first section 2'b is also expediently oriented vertically upwards.
- the descending pipeline branch 3 projects approximately centrally into the second section 2 'c of the deflection chamber 2'.
- the descending pipeline branch 3 in the variant shown in FIG. 11 projects eccentrically into the second section 2c of the deflection chamber 2 '.
- the deflection chamber according to FIG. 13 essentially corresponds to the deflection chamber according to FIG. 10. Only the baffle 2'a is elliptically curved in this embodiment.
- FIGS. 14 and 15 in turn have two descending pipeline branches 3a, 3b, which come together in the interior of the deflection chamber 2 '. are guided and have a common opening area 3c.
- the variant according to FIG. 14 shows a flat baffle wall 2'a, while in FIG. 15 an elliptically curved baffle wall 2'a is shown.
- FIG. 16 shows the diagram of a plant (similar to FIG. 1) with an additional combustion chamber 17 for precalculating the preheated raw material.
- the combustion chamber 17 is equipped with one or more fuel supply points 8 and is connected to the cooler 12 via a tertiary air line 7.
- the raw meal preheated in the preheater and separated in the cyclone 4 reaches part of the tertiary air line 7 leading to the combustion chamber 17 and part of the ascending pipeline branch 1 of the calcining stage.
- the material already largely calcined in the combustion chamber 17 enters the ascending pipeline branch 1 via a line 18.
- a further raw meal supply point 15 is provided in the lower region of the ascending pipeline branch 1.
- the entire material entering via the ascending branch 1 is derived via the one or the two descending branches. There is no intermediate separation of a partial flow of material.
- the invention is in no way limited to the illustrated embodiment variants. In particular, the position of the dip tube and its shape and length can be modified.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MXPA01010526A MXPA01010526A (es) | 1999-04-16 | 2000-03-24 | Aparato para el tratamiento termico de material. |
EP00920577A EP1183490A1 (de) | 1999-04-16 | 2000-03-24 | Vorrichtung zur thermischen behandlung von material |
US09/959,017 US6551100B1 (en) | 1999-04-16 | 2000-03-24 | Device for thermally treating a material |
AU41103/00A AU4110300A (en) | 1999-04-16 | 2000-03-24 | Device for thermally treating a material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19917310.9 | 1999-04-16 | ||
DE19917310A DE19917310A1 (de) | 1999-04-16 | 1999-04-16 | Vorrichtung zur thermischen Behandlung von Material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000063629A1 true WO2000063629A1 (de) | 2000-10-26 |
Family
ID=7904853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/002644 WO2000063629A1 (de) | 1999-04-16 | 2000-03-24 | Vorrichtung zur thermischen behandlung von material |
Country Status (6)
Country | Link |
---|---|
US (1) | US6551100B1 (de) |
EP (1) | EP1183490A1 (de) |
AU (1) | AU4110300A (de) |
DE (1) | DE19917310A1 (de) |
MX (1) | MXPA01010526A (de) |
WO (1) | WO2000063629A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006012266A1 (de) * | 2006-03-15 | 2007-09-20 | Cemag-Anlagenbau-Dessau Gmbh | Mischraum eines Kalzinators |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2344507A2 (fr) * | 1976-03-17 | 1977-10-14 | Polysius Ag | Installation de traitement thermique de produits a grains fins |
FR2442403A2 (fr) * | 1978-11-24 | 1980-06-20 | Kloeckner Humboldt Deutz Ag | Procede et dispositif pour la production de poussier de charbon |
GB1604797A (en) * | 1977-11-21 | 1981-12-16 | Kloeckner Humboldt Deutz Ag | Method and a device for roasting fine grain to dust fine material more particularly raw cement powder |
DE3735825A1 (de) * | 1986-05-20 | 1989-05-03 | Prerovske Strojirny Np | Vorrichtung zum kalzinieren von pulverfoermigen materialien |
EP0313871A2 (de) * | 1987-10-30 | 1989-05-03 | Krupp Polysius Ag | Vorrichtung und Verfahren zur Wärmebehandlung von feinkörnigem Gut |
DE4026814A1 (de) * | 1990-08-24 | 1992-02-27 | Kloeckner Humboldt Deutz Ag | Anlage zur thermischen behandlung von mehlfoermigen rohmaterialien |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5222351B2 (de) * | 1972-04-03 | 1977-06-16 | ||
DE3147374A1 (de) * | 1981-09-16 | 1983-03-24 | Krupp Polysius Ag, 4720 Beckum | "vorrichtung zur einfuehrung von feingut in eine brennzone" |
DE3538707A1 (de) * | 1985-10-31 | 1987-05-07 | Kloeckner Humboldt Deutz Ag | Verfahren und vorrichtung zur thermischen behandlung von mehlfoermigen rohmaterialien |
DE3705037A1 (de) * | 1987-02-17 | 1988-08-25 | Krupp Polysius Ag | Verfahren und anlage zur herstellung von zementklinker nach dem halbnassverfahren |
DE3817355A1 (de) * | 1988-05-20 | 1989-11-30 | Krupp Polysius Ag | Schwebegas-waermetauscher |
DE4123306C2 (de) | 1991-07-13 | 2000-05-25 | Deutz Ag | Anlage zur thermischen Behandlung von mehlförmigen Rohmaterialien |
-
1999
- 1999-04-16 DE DE19917310A patent/DE19917310A1/de not_active Withdrawn
-
2000
- 2000-03-24 MX MXPA01010526A patent/MXPA01010526A/es active IP Right Grant
- 2000-03-24 AU AU41103/00A patent/AU4110300A/en not_active Abandoned
- 2000-03-24 EP EP00920577A patent/EP1183490A1/de not_active Ceased
- 2000-03-24 US US09/959,017 patent/US6551100B1/en not_active Expired - Fee Related
- 2000-03-24 WO PCT/EP2000/002644 patent/WO2000063629A1/de not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2344507A2 (fr) * | 1976-03-17 | 1977-10-14 | Polysius Ag | Installation de traitement thermique de produits a grains fins |
GB1604797A (en) * | 1977-11-21 | 1981-12-16 | Kloeckner Humboldt Deutz Ag | Method and a device for roasting fine grain to dust fine material more particularly raw cement powder |
FR2442403A2 (fr) * | 1978-11-24 | 1980-06-20 | Kloeckner Humboldt Deutz Ag | Procede et dispositif pour la production de poussier de charbon |
DE3735825A1 (de) * | 1986-05-20 | 1989-05-03 | Prerovske Strojirny Np | Vorrichtung zum kalzinieren von pulverfoermigen materialien |
EP0313871A2 (de) * | 1987-10-30 | 1989-05-03 | Krupp Polysius Ag | Vorrichtung und Verfahren zur Wärmebehandlung von feinkörnigem Gut |
DE4026814A1 (de) * | 1990-08-24 | 1992-02-27 | Kloeckner Humboldt Deutz Ag | Anlage zur thermischen behandlung von mehlfoermigen rohmaterialien |
Also Published As
Publication number | Publication date |
---|---|
US6551100B1 (en) | 2003-04-22 |
EP1183490A1 (de) | 2002-03-06 |
MXPA01010526A (es) | 2002-03-14 |
AU4110300A (en) | 2000-11-02 |
DE19917310A1 (de) | 2000-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0176695B1 (de) | Vorrichtung zur Wärmebehandlung von Feingut | |
EP3672919B1 (de) | Anlage und verfahren zur herstellung von zementklinker | |
DE2925245A1 (de) | Verfahren zum abtrennen teilchenfoermigen materials aus einem gasstrom | |
DE3122052A1 (de) | Zyklonseparator | |
WO1990015228A1 (de) | Vorrichtung zum entfernen oxidierbarer bzw. verbrennbarer partikel aus abgasen | |
EP0002054B1 (de) | Anlage zur Wärmebehandlung von feinkörnigem Gut | |
DE19857578C2 (de) | Abgasrückführsystem für eine Brennkraftmaschine | |
DE60103780T2 (de) | System und verfahren zur entfernung von gas aus einem strom eines gemisches aus gas und teilchenförmigen feststoffen | |
EP1183490A1 (de) | Vorrichtung zur thermischen behandlung von material | |
DE3346536C2 (de) | Vorbrenner für Zementrohmehl | |
DE2605042A1 (de) | Waermetauscher zur thermischen behandlung von feinkoernigen, feuchten materialien | |
DE2624970B2 (de) | Schachtofen zur Kalzinierung und Röstung von pulverförmigem Gut in der Wirbelschicht | |
EP0205718A1 (de) | Zyklondampferzeuger | |
DE1244124B (de) | Vorrichtung zur Durchfuehrung chemischer oder physikalischer Reaktionen zwischen feinkoernigem oder pulverfoermigem Gut und Gas | |
EP0144597B1 (de) | Verfahren und Anlage zur Wärmebehandlung von feinkörnigem Gut | |
EP0327717B1 (de) | Verfahren und Anlage zur Wärmebehandlung von feinkörnigem Gut | |
EP2106519A1 (de) | Vorrichtung und verfahren zur durchführung chemischer und/oder physikalischer reaktionen zwischen einem feststoff und einem gas sowie anlage zur zementherstellung | |
DE102019126578A1 (de) | Technik zur Homogenisierung von Abgasgemischen | |
DE2439648C2 (de) | Mehrzyklonentstauber | |
DE3931811C2 (de) | ||
DE2329248A1 (de) | Vorrichtung zum entstauben von gasen | |
DE3417148A1 (de) | Anlage zur waermebehandlung von feinkoernigem gut | |
DE2923419A1 (de) | Einrichtung zur behandlung von rohstoffen fuer die zementherstellung | |
DD203476A1 (de) | Vorrichtung zur abscheidung und thermischen behandlung von mehlfoermigem gut | |
DE3906369A1 (de) | Verbrennungsmotor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2000920577 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2001/010526 Country of ref document: MX |
|
WWP | Wipo information: published in national office |
Ref document number: 2000920577 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09959017 Country of ref document: US |
|
WWR | Wipo information: refused in national office |
Ref document number: 2000920577 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000920577 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |