CN1748057A - A method and a plant for producing and treating wood fibres - Google Patents
A method and a plant for producing and treating wood fibres Download PDFInfo
- Publication number
- CN1748057A CN1748057A CNA2004800037195A CN200480003719A CN1748057A CN 1748057 A CN1748057 A CN 1748057A CN A2004800037195 A CNA2004800037195 A CN A2004800037195A CN 200480003719 A CN200480003719 A CN 200480003719A CN 1748057 A CN1748057 A CN 1748057A
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- China
- Prior art keywords
- air
- chip
- waste gas
- scourer
- wood chip
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Treating Waste Gases (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The present invention relates to a plant and a method for producing and treating wood fibres in a plant comprising a fibre-producing part having a chip preheater (1) and a beater (2) for freeing fibre from wood chips. Such a plant and such a method are included as parts in a continuous production process of board and the object is to reduce the emission discharges of foremost VOC and formaldehyde, during different parts of the process as well as from the finished product. The method comprises feeding of wood chips (A) into an upper part of the chip preheater (1), discharge of wood chips in the bottom of the chip preheater to a screw conveyor (12) for further transportation into the beater (2), compression of the wood chips in a compression zone (15) in the screw conveyor, supply of steam (B) into the lower part of the chip preheater for washing fed chips in the counterflow direction, disposal (8) of flue gases in the form of released organic emissions, steam and air in the upper part of the chip preheater, as well as disposal of flue gases generated during the compression through an outlet (13) arranged in the compression zone. The plant has the corresponding parts.
Description
Technical field
The present invention relates to a kind of as described in the preamble, method of in an equipment, producing and handling lumber fibre as claimed in claim 1, described equipment comprises a fiber production part, it has a chip preheater and is used for deviating from fiber from wood chip agitator, also relates to a kind of corresponding equipment as described in the preamble as claimed in claim 9.
Background technology
Based on the material that contains wood fibre, for example timber, straw, bagasse etc., also comprise except other step according to the continuous production technology of dry method and wet method making sheet: decompose raw material and deviate from fiber or aggregate of fibers, in step thereafter their gluings, drying, be shaped and be pressed into the product of finishing, promptly so-called plate or wood-fiber board.From raw material, deviate from fiber now and preferably in a step of a so-called heat-mechanical technology, implement, or in two of heat and mechanical treatment step independent levels, implement.
The heating power part, i.e. heating raw materials is being approximately under atmospheric pressure in the alkaline device of 100 ℃ of temperature and is carrying out, and is placed on then to be approximately the 4-13 bar pressure and to be approximately in the pressurization of one under the 150-190 ℃ of temperature chip preheater.The time of stationing in this pre-heater can be 1-10 minute, decides also can adjust on main process conditions.Heating power heating in the chip preheater is carried out by means of steam.Carry out between the agitator dish of mechanical treatment in agitator, wherein, final fiber deviate to occur in the state that temperature and pressure is higher than contiguous processing level.The time that wood chips raw is stayed in stirrer zone is very short.The power that is converted to mechanical energy changes heat in the stirrer zone in conjunction with mechanical treatment technology, and the form with steam occurs in system, and this steam is produced by the moisture in the raw material.
After fiber decomposes in agitator, fiber is transported in the fiber drying device of an air, implement drying process by means of a large amount of air and the controlled air themperature that enters that is approximately 140-200 ℃ within it, temperature is wherein decided according to the humidity of fiber at that time.Then, dry fiber further is transported to the shaping pressing technology, arrives the pressure processing of plate at last.
According to older prior art, the emission of main timber in chip preheater in processed technology, always be transported to drier by agitator together with a large amount of fibers from pre-heater, wherein, most of emission and fiber separation are followed moist dry air (humid drying air) to leave drier at last and are entered into atmosphere.These emissions at first comprise volatile organic matter, promptly so-called VOC (volatile organic compounds) and formaldehyde.The remaining amount of not leaving drier is followed fiber and is flow to thereafter processing unit, in the atmosphere around they are discharged into continuously there, or appears in the product of finishing (plate) as residue.Therefore, also from the product finished with exhaust venting to atmosphere.
Yet, from WO 99/10594 as can be known, once chip preheater was provided with a top exit before known, so that the organic emission that is discharged is removed in exhaust.Here, in condensation process, steam is introduced from the bottom of pre-heater, and the wood chip that enters pre-heater top is cleaned in the steam of convection current.The realization of this process is passed through the colder wood chip of wood chip array in the pre-heater top by means of the steam that moves up, and the emission that discharges, air and, and be removed in the scourer by outlet by each self-separation of the steam that water evaporates produced in the wood chip.Patent according to the disclosure is also known: wood chip is transported in the agitator from pre-heater by means of a spiral transmitter, and spiral transmitter also compresses wood chip and dewaters in transportation.
Summary of the invention
The purpose of this invention is to provide a kind of method and a kind of equipment, it reduces from production technology and mainly is the emission of VOC and formaldehyde to airborne release from the product of finishing (plate).Simultaneously, should keep the output of production equipment and the quality of final products.
The realization of this purpose relies on a kind of method with novel feature that characteristic as claimed in claim 1 limits, and a kind of equipment with novel feature that characteristic as claimed in claim 9 limits.
Therefore, the method according to this invention is characterised in that: the waste gas that produces in compression process is removed by an outlet that is arranged in the constricted zone.Equipment according to the present invention is characterised in that: a waste gas outlet is arranged in the constricted zone, so that remove the aqueous vapor of evaporation, this aqueous vapor produces after by the wood chip compression and comprises waste gas.
In the compression process of the wood chip in spiral transmitter, moisture is forced out, and the water of extrusion includes a large amount of residue wood emissions.By an outlet is provided in constricted zone, water can evaporate, and the emission that discharges can be by the outlet discharging.By intercepting and capturing directly with the emission that in constricted zone, discharges on the spot and with its transfer, can obtain the emission of a suitable high concentration, if opposite emission must the dry air of mass air flow mixes with the further transportation of a large amount of fibers and with representing very, then, provide lower concentration thus according to prior art.Therefore, by means of the present invention, can quite effectively handle the waste gas of in pre-heater, discharging.
According to an embodiment, by waste gas transmission being turned back to the top of chip preheater, they come along together with other waste gas therefrom then and remove, and realize removing the waste gas that is produced in compression process thus.Waste gas can advantageously be transferred to and destroy the place, for example incinerates in boiler, and emission is converted into carbon dioxide and water there.
According to another favourable feature, after removing waste gas, can control waste gas stream, like this, also can control the loss of steam in the chip preheater.
According to another embodiment, in being fed to agitator, wood chip can add a so-called trapping agent (catcher agent) to wood chip afterwards.This trapping agent is a kind of chemicals, sprays it so that bond some material, is formaldehyde in this example.Known in the past other local trapping agent that adds in processing technology.Yet, in the past and do not know directly trapping agent to be added in the agitator, proved already through overtesting that this was effective especially for bonding formaldehyde.Add trapping agent to carry out in the agitator result of the test and shown that content of formaldehyde has reduced 8-15%, and the perforation sampled value there is obvious improvement in final plate.
According to another embodiment, the lumber fibre of producing in agitator and handling is sent to a drier section, deliver to a scourer then, air leaves whereabouts scourer after the drier section, this air transmits by a heat exchanger so that air enters drier section, like this, the air that leads to drier section is heated, and the air that leads to scourer is cooled.Thus, its advantage is that certain heat is taken place the air that leads to drier restores.Yet another important advantage is that the air that leads to scourer is cooled.Because the condensable hydrocarbon that originates from the emission in the more preceding level in the processing procedure tends to be aerosol, this makes the performance difficulty more of catharsis of scourer.Equilibrium relation between the aqueous solution of air and described hydrocarbon depends on temperature, and like this, scourer is difficult to make emission to enter aquosity when being in higher temperature.Reason for this reason, the air that cooling enters scourer is favourable.
In addition, water droplet can advantageously separate by a demister device in scourer.Supply by water also can be added extra cooling.
Therefore, by means of the present invention, in whole production technologies of plate, can mainly reduce the discharging of VOC and formaldehyde.This causes important enhancement of environment, and the improvement of environment not only shows the inside of production line but also show outside, i.e. the environment of equipment outside.In addition, the improvement that is also advantageous in that final products of acquisition, it shows that the discharging of plate in environment for use is less.
Description of drawings
The present invention at length is described with the form of embodiment with reference to all accompanying drawings, wherein:
Fig. 1 schematically illustrates an equipment of producing and handle lumber fibre, and it comprises according to one embodiment of the invention,
Fig. 2 illustrates the embodiment according to the first of equipment of the present invention,
Fig. 3 illustrates the embodiment according to the second portion of equipment of the present invention.
The specific embodiment
Be schematically illustrated in being used among Fig. 1 and produce and handle in the example of the equipment of lumber fibre shown in being included in, it is a part of producing the continuous processing of the plate that contains lignocellulosic material.
Such equipment comprises multistage.Be schematically illustrated at different levels the comprising among Fig. 1: one has the first order of fiber production part, and this fiber production comprises that partly a chip preheater 1 and is used for the agitator of wood chip fiber; One has the second level of drier section 3, and this drier section comprises a cyclone; And, a third level that is connected with drier section, it comprises a scourer 4, is mainly used in and dry relevant effective particle separation.Should should be mentioned that especially: drier section itself can comprise a plurality of drying steps, and they have a plurality of similar devices, and in addition, this equipment also comprises additional intermediate steps, and its details is not shown for clarity as yet in the drawings.
The ratio of fiber production part in Fig. 2 of the equipment among Fig. 1 slightly larger.Wood chip A is fed in the pre-heater 1 by an inlet 6 from an alkaline cabinet (not shown) usually.In the bottom of chip preheater, steam B infeeds by air intake 7.Chip preheater also is provided with a top exit 8.In chip preheater, heat wood chip by heat, the supply and be suitable for wood chips raw under pressure, temperature and default time of this steam from devaporation.Because steam B is fed to the bottom of chip preheater, it will move up by wood chip array (wood chip column) C towards the colder wood chip that enters the place, top, like this, water evaporates in the wood chip and formation comprise the steam of the organic emission that discharges from timber.Described emission mainly is the volatile organic content such as VOC and formaldehyde, then, is separated with high concentration at the top of pre-heater by top exit 8.Next, waste gas moves to the destruction (not shown) of some type from top exit.Destruction can work by incinerating or evaporating.
As shown in Figure 2, the waste line that is positioned at the pre-heater top is provided with temperature control equipment TIC, and steam feed line is provided with a pressure control device PIC.By setting the force value of the steam corresponding with certain temperature of for example 170 ℃ of magnitudes, then the waste gas that can release by measurement (
Leaving flue gas) temperature control these waste gas, to prevent unnecessary steam and energy loss.Therefore, the temperature of waste gas should not surpass the temperature that enters steam.If this situation takes place, then automatically reduce the flow of waste gas, so that prevent to supply the steam that can utilize more than chip preheater.
What also can mention in this, is that exhaust at the pre-heater top is favourable for steam in the pre-heater and the heat transmission between the wood chip.Usually, the interior air of cold wood chip A that is included in supply reduces described heat and transmits, but can be directly removed by top exit 8 by means of this air of the present invention.
One wood chip outlet 11 is arranged in the bottom of chip preheater.Relevant therewith, be furnished with a spiral transmitter 12, it is fed to agitator 2 with wood chip.Spiral transmitter comprises a constricted zone 15, is forced out timber and the moisture that forms evaporates at this regional water in this zone, has so just produced steam.Constricted zone 15 is formed by axle, and the diameter of the shaft portion of the screw conveyor of the most close agitator 2 (screw conveyor) 12 is increased, so that it is a taper.This causes wood chip material in the described shaft portion to be compressed and is pushed out facing to the outer wall of screw conveyor 12, forms so-called chock plug stream (plug flow) at this, and it partly clogs the inlet that leads to agitator.The chock plug that forms separates agitator with spiral transmitter, like this, the steam that flows out from agitator can not flow in the constricted zone backward.According to preferred embodiment, a waste gas outlet 13 is arranged in the constricted zone, so that it can remove the described moisture evaporated that comprises waste gas.In addition, according to preferred embodiment, described waste gas outlet is connected to pipeline 14, and it gets back to the top of chip preheater 1 with the waste gas transmission.Here, they are discharged and wait further away from each other to destroy by top exit 8 together with other waste gas.
Shown in example in, a trapping agent D also is shown how can adds in the agitator 2.Trapping agent is a kind of chemicals, and it sprays for some material that bonds, and is formaldehyde in this example.The parts 16 that are used for adding a trapping agent can form: the center by screw conveyor 12 takes place trapping agent D is fed in the agitator 2.A suitable trapping agent in this example can be a urea etc.
In Fig. 3, demonstrate a embodiment according to a scrubber plant 4 of the present invention, it can use in conjunction with a drier stage.Described scrubber plant can advantageously be used with above-mentioned chip preheater 1 and agitator 2, but also can use with the chip preheater and the agitator of other type, and also can be used for the equipment of other type, therefore, can think invention itself.In Fig. 3, a scourer 4 is shown as it and accepts from drier section 3 by a pipeline 28 flow air E.By a heat exchanger device 20, a tube type heat exchanger for example is so that air F enters drier before this air allows to feed scourer.Like this, can utilize the heat that air contained that leaves drier, so that preheat air F, the G that enters drier, simultaneously, the air that left drier before air enters scourer 4 is cooled.Therefore equilibrium relation between air themperature and the concentration of formaldehyde will change, and promote that formaldehyde is converted to aquosity.The air E that leaves drier can have+temperature of 60 ℃ of magnitudes, and the dry air F that enters heat exchanger usually takes from the outside and can have+10 ℃ temperature, and then, the pre-warmed air G that enters drier can have+30 ℃ temperature.
Scourer also is provided with a plurality of water spray devices 21, and therefore they spray water and cool off and absorb the emission that is included in the dry air, so that it becomes aquosity.Water spray device 22 can advantageously also be positioned in the suction line 26 that leads to scourer.In the bottom of scourer one delivery port is arranged, wherein, water can be drawn out of so that be transmitted and purify.The outlet 24 of one air that is used to release (leaving air) is arranged in the top of scourer.Scourer also is provided with a so-called demister or liquid drop separator 25 suitably, and it links to each other with last air outlet slit, so that isolate water droplet.
The spray water of supply can be used NaHSO
3Carry out chemical treatment with NaOH, so that optimize the function that reduces emission.Therefore, scourer 4 is provided with a device 27 that is used for water is supplied described additive.Result of the test has shown that the content of formaldehyde in the air of releasing can reduce 75%, need not connect a heat exchanger.
The present invention should not think the example that is confined to the foregoing description, but in the scope of attached claim, those skilled in the art will appreciate that and can make amendment in many ways and change.
Claims (19)
1. method of in an equipment, producing and handling lumber fibre, described equipment comprises a fiber production part, and this part has a chip preheater and is used for deviating from fiber from wood chip agitator, and this method comprises following all steps:
Wood chip is fed in the top of chip preheater;
Wood chip in the bottom of chip preheater is discharged to a screw conveyor, so that further be transported to agitator;
In the constricted zone of screw conveyor, compress wood chip;
Supply steam in the bottom of chip preheater, so that clean the wood chip of presenting along the direction of reverse flow;
Remove waste gas in the top of chip preheater, waste gas is the form of organic emission, steam and the air of release,
It is characterized in that the waste gas that produces is removed by being arranged in the outlet of one in the constricted zone in compression process.
2. the method for claim 1 is characterized in that, by waste gas transmission being turned back to the top of chip preheater, they come along together with other waste gas therefrom then and remove, and realize removing the waste gas that is produced in compression process thus.
3. method as claimed in claim 1 or 2 is characterized in that the waste gas of removal is transferred to a destruction, destroys there.
4. as any one described method in the above-mentioned claim, it is characterized in that, by means of measuring from the temperature of the removed waste gas in top of chip preheater, measure and control the pressure that enters steam, compare these values and relatively control the waste gas that flows out from top exit, can control the loss of the steam of chip preheater outflow thus according to this.
5. as any one described method in the above-mentioned claim, it is characterized in that, after wood chip is fed to agitator, wood chip is added a trapping agent.
6. as any one described method in the above-mentioned claim, it is characterized in that the lumber fibre of producing in agitator and handling is delivered to drier section, delivers to a scourer then, the air of drier section was left in cooling before air was handled in scourer.
7. method as claimed in claim 6, it is characterized in that, the air that leaves the drier section that is used for scourer is heated so that be transferred to the air of drier section by a heat exchanger that is used to enter the air of drier section, and the air that is transferred to scourer is cooled.
8. as claim 6 or 7 described methods, it is characterized in that water droplet separates by a demister device that is arranged in the air outlet slit place of scourer in scourer.
9. equipment of producing and handling lumber fibre, described equipment comprises a fiber production part, this part has a chip preheater and is used for deviating from fiber from wood chip agitator, this chip preheater is provided with the wood chip outlet that a wood chip inlet and that is positioned at its top is positioned at its underpart, also be provided with a steam inlet and that is positioned at its underpart and be used for organic emission to discharge, the top exit of the waste gas that steam and air form produce, like this, by described wood chip inlet be fed in the pre-heater wood chip by means of by described steam inlet vapor supplied along flow path direction is cleaned, the wood chip outlet is connected with agitator by a screw conveyor that comprises a constricted zone
It is characterized in that waste gas outlet is arranged in the constricted zone, so that remove the aqueous vapor of wood chip compression back evaporation that produce and that contain waste gas.
10. equipment as claimed in claim 9 is characterized in that, the described waste gas outlet in constricted zone is connected to a connecting line that is arranged between constricted zone and the chip preheater top.
11. as claim 9 or 10 described equipment, it is characterized in that it comprises a destruction, the waste gas that is produced is delivered to this device and is destroyed.
12. as any one described equipment among the claim 9-11, it is characterized in that, it comprises: a temperature control equipment, this device are measured the temperature of the waste gas of removing in to the process that is included in gas generant portion mixed volume in the chip preheater and partial pressure; And, a pressure control device, this measurement device and control enter the pressure of steam, and by more described value, control vapour losses in the chip preheater by means of controlling from top exit effluent air stream.
13. as any one described equipment among the claim 9-12, it is characterized in that it comprises a device, be used for after wood chip is fed to agitator, wood chip being added a trapping agent.
14., it is characterized in that it comprises as any one described equipment among the claim 9-13: a drier section, the lumber fibre of producing in the agitator and handling is delivered to this drier section; One scourer, it is positioned at after the drier section; And, all pipelines, the air that drier section is left in their transmission also comprises a cooling device to scourer, so that cooling enters the air of scourer from drier section.
15. equipment as claimed in claim 14, it is characterized in that, cooling device comprises that one is used to enter the heat exchanger of the air of drier section, described pipeline transmission is left the air of drier section in scourer, the air that transmission is released is by described heat exchanger, like this, the air that enters drier section is heated, and the air that is transferred to scourer is cooled.
16. as any one described equipment among the claim 14-15, it is characterized in that scourer comprises the device that is used for supplying water, the waste gas that described water cooling and absorption exist enters into aquosity.
17., it is characterized in that this device is arranged in the pipeline between drier section and the scourer as any one described equipment among the claim 14-16, so that supply water cooling and absorb the waste gas that exists and enter into aquosity.
18., it is characterized in that it comprises that at least one is used for supplying the device of additive as claim 16 or 17 described equipment, so that supply water is carried out chemical treatment.
19., it is characterized in that scourer comprises a device that is used for separate water droplets as any one described equipment among the claim 14-18.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0300385A SE524788C2 (en) | 2003-02-11 | 2003-02-11 | Method and apparatus for producing and treating wood fibers |
| SE03003852 | 2003-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1748057A true CN1748057A (en) | 2006-03-15 |
Family
ID=20290392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800037195A Pending CN1748057A (en) | 2003-02-11 | 2004-02-11 | A method and a plant for producing and treating wood fibres |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20060151133A1 (en) |
| EP (1) | EP1597427A1 (en) |
| CN (1) | CN1748057A (en) |
| BR (1) | BRPI0407339A (en) |
| CA (1) | CA2512993A1 (en) |
| RU (1) | RU2345186C2 (en) |
| SE (1) | SE524788C2 (en) |
| WO (1) | WO2004072362A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE528116C2 (en) * | 2005-12-02 | 2006-09-05 | Kvaerner Pulping Tech | Wood chip steaming system for chemical pulp production, has chip bin dilution pipe extending between atmosphere and valve regulated by sensor for measuring process parameter |
| HRP20220416T1 (en) * | 2020-02-28 | 2022-05-27 | Fiberboard Gmbh | Method and treatment system for reducing volatile organic compounds from wood chips |
| EP4122662B1 (en) | 2021-07-23 | 2024-02-28 | Fiberboard GmbH | Method for producing fibreboard with reduced voc emissions |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4037792A (en) * | 1972-10-23 | 1977-07-26 | Sca Development Aktiebolag | Continuously refining raw fibrous material to produce mechanical refiner pulp |
| US4059237A (en) * | 1974-02-15 | 1977-11-22 | Oy Keskuslaboratorio - Centrallaboratorium, Ab | System for feeding a double disc refiner |
| SE403916B (en) * | 1975-06-04 | 1978-09-11 | Rolf Bertil Reinhall | DEVICE FOR MILLING APPARATUS FOR LIGNOCELLULOSE-MATERIAL |
| SE413784B (en) * | 1976-08-06 | 1980-06-23 | Isel Sa | SET AND DEVICE TO USE IN DEFIBRATION ZONE DEVELOPED HEAT TO MINIMIZE CONSUMPTION WHEN PREPARING MASS FOR FIBER DISC |
| SE413522B (en) | 1977-01-03 | 1980-06-02 | Reinhall Rolf Bertil | DEVICE FOR THE PREPARATION OF FIBER MASS OF LIGNOCELLULOSALLY MATERIAL |
| US4129166A (en) | 1977-07-18 | 1978-12-12 | General Electric Company | Nb3 Ge superconductive films grown with air |
| SE422089B (en) * | 1978-05-03 | 1982-02-15 | Defibrator Ab | SET AND DEVICE FOR MANUFACTURING FIBER MASS OF LIGNOCELLULOSALLY MATERIAL |
| FI62687C (en) * | 1978-05-26 | 1983-02-10 | Enso Gutzeit Oy | SKIVRAFFINOER |
| FI62149C (en) * | 1979-01-12 | 1984-03-20 | Yhtyneet Paperitehtaat Oy | FOERFARANDE FOER FRAMSTAELLNING AV VARMSLIPMASSA |
| US4555254A (en) * | 1982-11-30 | 1985-11-26 | Koppers Company, Inc. | Material collector and discharger apparatus |
| SE461962B (en) * | 1987-12-16 | 1990-04-23 | Sunds Defibrator Ind Ab | SET AND DEVICE FOR MANUFACTURING FIBER BOARD DISKS |
| FI106223B (en) * | 1996-06-07 | 2000-12-15 | Valmet Corp | Heat exchanger |
| SE521593C2 (en) * | 1997-08-25 | 2003-11-18 | Valmet Fibertech Ab | Plant for the production and treatment of wood fibers |
-
2003
- 2003-02-11 SE SE0300385A patent/SE524788C2/en not_active IP Right Cessation
-
2004
- 2004-02-11 EP EP04710138A patent/EP1597427A1/en not_active Withdrawn
- 2004-02-11 US US10/544,699 patent/US20060151133A1/en not_active Abandoned
- 2004-02-11 CA CA002512993A patent/CA2512993A1/en not_active Abandoned
- 2004-02-11 RU RU2005128278/11A patent/RU2345186C2/en not_active IP Right Cessation
- 2004-02-11 BR BR0407339-8A patent/BRPI0407339A/en not_active IP Right Cessation
- 2004-02-11 CN CNA2004800037195A patent/CN1748057A/en active Pending
- 2004-02-11 WO PCT/SE2004/000180 patent/WO2004072362A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0407339A (en) | 2006-01-10 |
| EP1597427A1 (en) | 2005-11-23 |
| SE524788C2 (en) | 2004-10-05 |
| SE0300385L (en) | 2004-08-12 |
| US20060151133A1 (en) | 2006-07-13 |
| RU2005128278A (en) | 2006-01-27 |
| RU2345186C2 (en) | 2009-01-27 |
| SE0300385D0 (en) | 2003-02-11 |
| WO2004072362A1 (en) | 2004-08-26 |
| CA2512993A1 (en) | 2004-08-26 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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