US20070130768A1 - Method for heating a roller, and heatable roller - Google Patents
Method for heating a roller, and heatable roller Download PDFInfo
- Publication number
- US20070130768A1 US20070130768A1 US10/597,848 US59784805A US2007130768A1 US 20070130768 A1 US20070130768 A1 US 20070130768A1 US 59784805 A US59784805 A US 59784805A US 2007130768 A1 US2007130768 A1 US 2007130768A1
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- US
- United States
- Prior art keywords
- roller
- fuel gas
- air
- fuel
- fed
- 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.)
- Abandoned
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49345—Catalytic device making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49544—Roller making
Abstract
Disclosed is a method for heating a roller that is used in the production and/or finishing of a web of material, particularly a paper web or paperboard web. According to said method, the heat required for heating the roller is generated at least in part inside the roller by combusting a fuel with air or oxygen at least in some regions inside the roller. Also disclosed is a corresponding heatable roller.
Description
- This invention relates to a method for heating a roller used in the production and/or finishing of a web of material, particularly a paper web or paperboard web. It also relates to a heatable roller according to the prior-art portion of
claim 26. - For the usual heatable rollers used hitherto in the production and/or finishing of paper, heat is transported into the roller by means of a heat medium. As such, the heat required for heating the roller is transferred indirectly. In this case the medium concerned, which as a rule is oil or water, is heated by means of an external heating unit. As a rule provision was made for operation with electricity, firing with gas or operation with steam.
- The object of the present invention is to create an improved method and an improved heatable roller of the type initially referred to. In particular the use of renewable fuels should also be possible.
- With regard to the method, this object is accomplished in that the heat required for heating the roller is generated at least in part inside the roller by combusting a fuel with air or oxygen at least in some regions inside the roller.
- Hence the heat is generated where it is required. Furthermore, renewable energies can now be used to generate the heat required. In this case the roller can be operated in particular in the manner of a catalytic burner.
- According to a preferred practical embodiment of the method according to the invention the heat is generated at least in part on inner heat transfer surfaces of the roller which are coated with a catalyst. The heat can be generated at least in part in at least one space inside the roller which is filled with a catalytic carrier or equipped with a catalytic surface.
- A fuel gas is preferably used as fuel.
- According to an advantageous practical embodiment of the method according to the invention an exothermic reaction is made to take place on the catalyst using a mixture of fuel gas and air in an adjustable or adjusted mixture ratio.
- According to another advantageous embodiment the mixture of fuel gas and air is fed to peripheral bores in the roller and an exothermic reaction is made to take place in these peripheral bores. The peripheral bores can extend generally parallel to the roller axis. The heat gas from the peripheral bores is fed preferably via radial ducts to a duct-filled annular region near the roller surface. As such, the annular region in question can be provided in particular in the roller casing.
- The mixture of fuel gas and air is expediently fed to the roller via at least one rotary inlet.
- However, the exothermic reaction can also take place in a duct-filled annular region near the roller surface. This duct-filled annular region can be fed, for example, with fuel gas via peripheral bores in the roller and radial ducts extending therefrom and, for example, with air via a central roller bore and radial ducts extending therefrom. However, it is also conceivable to supply a mixture of fuel gas and air.
- The significant advantage of a catalytic reaction is that the reaction takes place locally on the catalytically coated surface (ducts in the annular region). If supply lines (peripheral bores, radial bores and central roller bores) are not coated, a mixture of fuel gas and air will not react here. Only the ducts in the inside region are coated and it is only here that a reaction of the reaction mixture with heat transfer takes place.
- The mixing of air and fuel gas prior to feeding into the roller is not a disadvantage therefore. However, mixing inside the roller requires additional supply lines, ducts etc. and would be more complex. In principle, such supplying of a mixture is also conceivable however.
- Hence in this case too, peripheral bores extending in particular parallel to the roller axis can again be provided. However, here the exothermic reaction does not take place in these peripheral bores but in the duct-filled annular region near the roller surface. The peripheral bores can be used, for example, to feed the fuel gas, while air is fed via the central roller bore for example. In principle, however, such an embodiment in which a mixture of fuel gas and air is fed via the peripheral bores is also conceivable.
- Again, the fuel gas or the air is expediently fed to the roller via at least one rotary inlet.
- According to a preferred practical embodiment of the method according to the invention, the roller is heatable on a zone basis viewed in the direction of the roller axis, with the various zones being heatable independently of each other at least in part. As such, the zones in question can be operated singly or in groups.
- In the case of a roller with a casing rotating around a non-rotatable core the exothermic reaction can also take place in particular in the region of the surface of the roller core or in a duct-filled annular region of the rotatable roller casing. Hence an expedient alternative to an exothermic reaction in the region of the surface of the roller core is, as previously explained, the reaction in the duct-filled annular region of the rotatable roller casing.
- In this case an embodiment is conceivable such that, for example, the upright roller core is divided into two parts, namely into an air inlet and a waste gas outlet. Between the upright roller core and the rotatable roller casing provision can be made for seals which enclose the annular regions between both bodies. Through bores in the roller core, connections can be made alternately between the air inlet or the waste gas outlet and the annular regions. Radial bores in the roller casing can be used for connection of the catalytically coated ducts with the annular regions.
- The roller is preferably divided by means of seals and several feed ducts or bores opening into the duct structures for fuel gas and air or a mixture of fuel gas and air into various axial zones that are heatable independently of each other at least in part. Lines feeding the fuel gas can open into the feed ducts or bores. Furthermore, these feed ducts or bores can communicate with an air-conveying central bore of the roller core.
- The reaction or roller temperature is advantageously set by means of the fuel/air mass flow ratio (stoichiometry).
- In certain cases an overstoichiometric combustion or combustion with a surplus of oxygen can be expedient.
- The fuel used can be particularly hydrogen. In particular the use of reformat or an H2-rich gas obtained from natural gas is also an advantage.
- In particular at least one noble metal such as in particular platinum, palladium, rhodium and/or the like can be used as catalyst.
- The fuel gas mass flow is advantageously controlled such that particularly a volumetric flow measurement and a corresponding control valve can be provided as well.
- It is also an advantage particularly if the fuel gas concentration in the air is controlled preferably by means of a fuel gas sensor and a corresponding control valve.
- It is expedient for the roller temperature as well to be controlled.
- Again, a respective control can also take place particularly on a zone basis, whereby the zones can be controlled singly or in groups.
- With regard to the heatable roller, the object of the invention mentioned above is accomplished in that the heat required for heating is generated at least in part by combusting a fuel with air or oxygen inside the roller.
- Preferred embodiments of the heatable roller are specified in the subclaims.
- The duct structures provided on the surface of the roller core for the embodiment in question can be produced by etching or milling at least in part.
- The coating with the catalyst can be produced, for example, by rinse coating, dip coating or spray coating.
- The roller casing is preferably shrink-fitted and/or soldered to the roller core.
- The invention will be described in more detail in the following text using exemplary embodiments and with reference to the drawing, in which:
-
FIG. 1 is a schematic representation, partly in section, of a heatable roller fed with fuel gas and operated in the manner of a catalytic burner, -
FIG. 2 is a schematic representation in cross-section of an embodiment of the heatable roller on which the mixture of fuel gas and air is fed to peripheral bores in the roller and the exothermic reaction takes place in these bores, -
FIG. 3 is a plan view of the heatable roller according toFIG. 3 showing the ducts provided near the surface to which the heat gas is fed from the peripheral bores, -
FIG. 4 is a schematic representation in cross-section of another embodiment of the heatable roller on which the exothermic reaction takes place in a duct-filled annular region near the roller surface, -
FIG. 5 is a schematic perspective representation of the core of another embodiment of the heatable roller on which the exothermic reaction takes place in the region of the surface of the roller core, -
FIG. 6 is a schematic perspective representation of an embodiment of the heatable roller with a non-rotating core according toFIG. 5 , also showing the casing that rotates around this core, and -
FIG. 7 is a schematic partial representation in section of another embodiment of the heatable roller with a non-rotating core, but in this case the exothermic reaction again takes place in a duct-filled annular region of the rotatable roller casing. - In a schematic representation, partly in section,
FIG. 1 shows aheatable roller 10 which is fed with fuel gas or a mixture of fuel gas and air and operated in the manner of a catalytic burner. Theroller 10 can be for use particularly in the production and/or finishing of a web of material, particularly a paper web or paperboard web. - The heat required for heating the
roller 10 is generated at least in part by combusting a fuel with air or oxygen inside theroller 10. Hence theroller 10 is configured in the manner of a catalytic burner. - In this case the
roller 10 has inner heat transfer surfaces 12 coated with a catalyst, on which the exothermic chemical reaction takes place. Alternatively or in addition to this, the roller can also comprise at least one inner space which is filled with a catalytic carrier or equipped with a catalytic surface. - A fuel gas, for example hydrogen or the like, can be provided as fuel.
- In the case under consideration the
heatable roller 10 is fed with a mixture of fuel gas and air in a mixture ratio that is adjustable for an exothermic reaction on the catalyst. - As is evident from
FIG. 1 , the air is made available by means of anair blower 14 and fed first via aline section 16 to amixing point 18, to which the fuel gas is fed via anotherline section 20 in order to be mixed with the air. - The mixture of fuel gas and air is then fed via a
line section 22 to aheat transfer device 24, from which the mixture is fed via aline section 26 to the catalyst-coated heat transfer surfaces 12 and in which the freshly fed mixture is preheated via aline section 26 by means of the waste gas or waste air returned from the heat transfer surfaces 12 of theroller 10. - A
control valve 28 and adevice 30 for volumetric flow measurement are provided in theline section 20 which feeds the fuel gas. - A
fuel gas sensor 32 is arranged in theline section 22 provided between the mixingpoint 18 and theheat transfer device 24. - The waste gas or the waste air is passed out of the heat transfer device via a
line section 34. - On the embodiment under consideration the mixture of fuel gas and air is fed to the
heat transfer device 24 at a temperature of around 20° C. for example. In theheat transfer device 24 the mixture is preheated to a temperature of around 200° C. for example. The waste gas or waste air returned from the region of the heat transfer surfaces 12 of theroller 10 to theheat transfer device 24 has a temperature of around 250° C. for example. The waste gas or waste air passed out of theheat transfer device 24 has a temperature of around 50° C. for example. - The fuel gas fed via the
line section 20 can be in particular hydrogen or, for example, a reformat or an H2-rich gas obtained from natural gas. - The reaction or roller temperature can be set by means of the fuel/air mass flow ratio (stoichiometry). In principle, an overstoichiometric combustion or combustion with a surplus of oxygen can also take place.
- The catalyst call be, for example, a noble metal such as in particular platinum, palladium, rhodium and/or the like.
- Control of the fuel gas mass flow is possible by means of the control valve and the
device 30 for volumetric flow measurement. - The fuel gas concentration in the air can be controlled by means of the
fuel gas sensor 32 and, for example, thecontrol valve 38. - It is possible in particular for the roller temperature as well to be controlled by means of a corresponding control valve.
- In a schematic representation in cross-section,
FIG. 2 shows an embodiment of theheatable roller 10 on which the mixture of fuel gas and air is fed toperipheral bores 36, E of theroller 10 extending generally parallel to the roller axis. - The heat gas from the peripheral bores 36, E is fed via
radial ducts 38, E to anannular region 42 filled withducts 40 near the roller surface. The exothermic reaction takes place in theseducts 40. - In the case under consideration, twelve
peripheral bores 36 are provided for example, whereby the mixture of fuel gas and air is fed via six (36, E) of these peripheral bores to the roller. Here “E” stands for the German “Eintritt”, which means “inlet”. - In addition, twelve
radial bores 38 are provided. In this case the mixture of fuel gas and air flows via six (38, E) of these twelve radial bores in the direction of thedistributor ducts 43, E. - As such, there are twelve bores in a sectional plane of the roller, while several bore planes are provided in axial direction.
- The gas mixture is distributed via the
distributor ducts 43, E in axial direction and then flows via theducts 40 in theannular region 42 to thedistributor ducts 43, A. Here “A” stands for the German word “Austritt” which means “outlet”. - The
channels 40 in theannular region 42 are catalytically coated. The exothermic reaction thus takes place here. - The reaction product flows via the remaining six
radial bores 38, A into the peripheral bores 36, A, through which it is discharged from the roller. -
FIG. 3 shows a plan view of a part of theheatable roller 10 according toFIG. 3 , showing theducts 40 provided near the roller surface to which the heat gas is fed from the peripheral bores 36, E (cf.FIG. 2 ). - The mixture of fuel gas and air can be fed to the
roller 10 via at least one rotary inlet. -
FIG. 4 shows in a schematic representation in cross-section another embodiment of theheatable roller 10 on which the exothermic reaction takes place in a duct-filledannular region 44 near the roller surface. - Again, this duct-filled
annular region 44 near the roller surface is fed with a mixture of fuel gas and air viaperipheral bores 46 of theroller 10, which extend generally parallel to the roller axis, andradial ducts 48 extending therefrom. The reaction products (waste gases) are discharged from the roller viaradial ducts 52 and the central roller bore 50. - Again, the mixture of fuel gas and air can be fed to the
roller 10 via at least one rotary inlet in the case under consideration as well. -
FIG. 5 shows in a schematic perspective representation thenon-rotating core 54 of another embodiment of the heatable roller 10 (cf. in particularFIG. 6 ) on which the exothermic reaction takes place, for example, in the region of the surface of theroller core 54. Such an embodiment is an advantage particularly if theroller 10 is heatable on a zone basis viewed in the direction of the roller axis, meaning the various zones are heatable independently of each other at least in part. -
FIG. 6 shows in a schematic perspective representation aheatable roller 10 equipped with such acore 54 according toFIG. 5 , including thecasing 54 that rotates around thiscore 54. - In the case under consideration the surface of the
roller core 54, for example, is thus coated with a catalyst at least in part. - As is evident from
FIG. 5 , theroller 10 in the case under consideration is divided by means ofseals 58 and several feed ducts or bores 60 opening into the duct structures for fuel gas and air or a mixture of fuel gas and air into axial zones that are heatable independently of each other at least in part.Lines 62 for the fuel gas open in the case under consideration into the feed ducts or bores 60. Furthermore, the feed ducts or bores 60 communicate with an air-conveyingcentral bore 64 of theroller core 54, through which the resulting waste gas is also discharged. - Whereas on the embodiment just described the exothermic reaction takes pace in the region of the surface of the roller core,
FIG. 7 shows in a schematic partial representation in section another embodiment of theheatable roller 10 on which the reaction again takes place in an annular region of therotatable roller casing 56 filled withducts 40. Again, theroller 10 is heatable on a zone basis. - The
non-rotating roller core 54 is divided in the middle. The division into two parts results in anair inlet 66 and awaste gas outlet 68. - Between the
upright roller core 54 and therotatable roller casing 56 provision is made for seals 70 which enclose theannular regions 72 between the two bodies. Through radial bores 74 provided in theroller core 54, connections are made alternately between theair inlet 66 or thewaste gas outlet 68 and theannular regions 72. Radial bores 76 in theroller casing 56 connect the catalytically coatedducts 40 with theannular regions 72. - Fuel gas is fed in via supply lines 78.
- Hence in the case under consideration the reaction zones lie in the catalytically coated
ducts 40. -
- 10 Heatable roller
- 12 Heat transfer surfaces coated with a catalyst
- 14 Air blower
- 16 Line section
- 18 Mixing point
- 20 Line section
- 22 Line section
- 24 Heat transfer device
- 26 Line section
- 28 Control valve
- 30 Device for volumetric flow measurement
- 32 Fuel gas sensor
- 34 Line section
- 36 Peripheral bore
- 38 Radial duct
- 40 Ducts
- 42 Duct-filled annular region
- 43 Distributor duct
- 44 Duct-filled annular region
- 46 Peripheral bore
- 48 Radial duct
- 50 Central roller bore
- 52 Radial duct
- 54 Roller core
- 56 Roller casing
- 58 Seal
- 60 Feed duct, feed opening
- 62 Line
- 64 Central bore
- 66 Air inlet
- 68 Waste gas outlet
- 70 Seal
- 72 Annular region
- 74 Radial bore
- 76 Radial bore
- 78 Fuel gas supply line
Claims (54)
1. Method for heating a roller (10) used in the production and/or finishing of a web of material, particularly a paper web or paperboard web,
characterized in that
the heat required for heating the roller (10) is generated at least in part inside the roller (10) by combusting a fuel with air or oxygen at least in some regions inside the roller (10).
2. Method according to claim 1 ,
characterized in that
the roller (10) is operated in the manner of a catalytic burner.
3. Method according to claim 1 ,
characterized in that
the heat is generated at least in part on inner heat transfer surfaces (12) of the roller (10) which are coated with a catalyst.
4. Method according to claim 1 ,
characterized in that
the heat is generated at least in part in at least one space inside the roller (10) which is filled with a catalytic carrier or equipped with a catalytic surface.
5. Method according to claim 1 ,
characterized in that
a fuel gas is used as fuel.
6. Method according to claim 5 ,
characterized in that
the catalyst is supplied with a mixture of fuel gas and air in a mixture ratio that is adjustable or adjusted for an exothermic reaction.
7. Method according to claim 6 ,
characterized in that
the mixture of fuel gas and air is fed to peripheral bores (36) in the roller (10) and an exothermic reaction is made to take place in these peripheral bores (36).
8. Method according to claim 7 ,
characterized in that
the heat gas is fed from the peripheral bores (36) via radial ducts (38) to an annular region (42) filled with ducts (40) near the roller surface.
9. Method according to claim 1 ,
characterized in that
the mixture of fuel gas and air is fed to the roller (10) via at least one rotary inlet.
10. Method according to claim 1 ,
characterized in that
the exothermic reaction takes place in a duct-filled annular region (44) near the roller surface to which fuel gas is fed preferably via peripheral bores (46) in the roller (10) and radial ducts (48) extending therefrom and air is fed preferably via a central roller bore (50) and radial ducts (52) extending therefrom.
11. Method according to claim 10 ,
characterized in that
the fuel gas or the air is fed to the roller (10) via at least one rotary inlet.
12. Method according to claim 1 ,
characterized in that
the roller (10) is heatable on a zone basis viewed in the direction of the roller axis, with the various zones being heatable independently of each other at least in part.
13. Method according to claim 1 ,
characterized in that
on a roller (10) with a casing (56) rotating around a non-rotatable core (54) an exothermic reaction is made to take place in the region of the surface of the roller core (54) or in a duct-filled annular region of the rotatable roller casing (56).
14. Method according to claim 13 ,
characterized in that
an exothermic reaction is made to take place in the region of duct structures provided on the surface of the roller core (54).
15. Method according to claim 13 ,
characterized in that
the surface of the roller core (54) or the duct structures provided thereon are coated with a catalyst at least in part.
16. Method according to claim 13 ,
characterized in that
by means of seals (58) and several feed ducts or bores (60) opening into the duct structures for fuel gas and air or a mixture of fuel gas and air, the roller (10) is divided into axial zones that are heatable independently of each other at least in part.
17. Method according to claim 1 ,
characterized in that
the reaction or roller temperature is adjusted by means of the fuel/air mass flow ratio (stoichiometry).
18. Method according to claim 1 ,
characterized in that
an overstoichiometric combustion or combustion with a surplus of oxygen is made to take place.
19. Method according to claim 1 ,
characterized in that
hydrogen is used as fuel.
20. Method according to claim 1 ,
characterized in that
reformat or an H2-rich gas obtained from natural gas is used as fuel.
21. Method according to claim 1 ,
characterized in that
at least one noble metal such as in particular platinum, palladium, rhodium and/or the like is used as catalyst.
22. Method according to claim 1 ,
characterized in that
the fuel gas mass flow is controlled preferably by means of a volumetric flow measurement (30) and a corresponding control valve (28).
23. Method according to claim 1 ,
characterized in that
the fuel gas concentration in the air is controlled preferably by means of a fuel gas sensor (32) and a corresponding control valve (28).
24. Method according to claim 1 ,
characterized in that
the roller temperature is controlled preferably by means of a roller temperature measurement and a corresponding control valve.
25. Method according to claim 22 ,
characterized in that
the respective control is performed on a zone basis at least in part.
26. Heatable roller (10) used in the production and/or finishing of a web of material, particularly a paper web or paperboard web,
characterized in that
the heat required for heating is generated at least in part by combusting a fuel with air or oxygen inside the roller (10).
27. Roller according to claim 26 ,
characterized in that
it is configured simultaneously in the manner of a catalytic burner.
28. Roller according to claim 26 ,
characterized in that
it has inner heat transfer surfaces (12) coated with a catalyst.
29. Roller according to claim 26 ,
characterized in that
it has at least one space inside, which is filled with a catalytic carrier or equipped with a catalytic surface.
30. Roller according to claim 26 ,
characterized in that
a fuel gas is provided as fuel.
31. Roller according to claim 30 ,
characterized in that
it is supplied with a mixture of fuel gas and air in a mixture ratio that is adjustable or adjusted for an exothermic reaction.
32. Roller according to claim 31 ,
characterized in that
the mixture of fuel gas and air is fed to peripheral bores (36) in the roller (10) and the exothermic reaction takes place in these bores (36).
33. Roller according to claim 32 ,
characterized in that
the heat gas is fed from the peripheral bores (36) via radial ducts (38) to an annular region (42) filled with ducts (40) near the roller surface.
34. Roller according to claim 26 ,
characterized in that
the mixture of fuel gas and air is fed to the roller (10) via at least one rotary inlet.
35. Roller according to claim 26 ,
characterized in that
the exothermic reaction takes place in a duct-filled annular region (44) near the roller surface to which fuel gas is fed preferably via peripheral bores (46) in the roller (10) and radial ducts (48) extending therefrom and air is fed preferably via a central roller bore (50) and radial ducts (52) extending therefrom.
36. Roller according to claim 35 ,
characterized in that
the fuel gas or the air can be fed to the roller (10) via at least one rotary inlet.
37. Roller according to claim 26 ,
characterized in that
the roller (10) is heatable on a zone basis viewed in the direction of the roller axis, with the various zones being heatable independently of each other at least in part.
38. Roller according to claim 26 ,
characterized in that
it comprises a non-rotatable core (54) and a casing (56) rotating around said core, and the exothermic reaction takes place in the region of the surface of the roller core (54) or in a duct-filled annular region of the rotatable roller casing (56).
39. Roller according to claim 38 ,
characterized in that
the exothermic reaction takes place in the region of duct structures provided on the surface of the roller core (54).
40. Roller according to claim 38 ,
characterized in that
the surface of the roller core (54) or the duct structures provided thereon are coated with a catalyst at least in part.
41. Roller according to claim 38 ,
characterized in that
by means of seals (58) and several feed ducts or bores (60) opening into the duct structures for fuel gas and air or a mixture of fuel gas and air it is divided into axial zones that are heatable independently of each other at least in part.
42. Roller according to claim 26 ,
characterized in that
the reaction or roller temperature is adjustable by means of the fuel/air mass flow ratio (stoichiometry).
43. Roller according to claim 26 ,
characterized in that
an overstoichiometric combustion or combustion with a surplus of oxygen takes place.
44. Roller according to claim 26 ,
characterized in that
hydrogen is provided as fuel.
45. Roller according to claim 26 ,
characterized in that
reformat or an H2-rich gas obtained from natural gas is provided as fuel.
46. Roller according to claim 26 ,
characterized in that
at least one noble metal such as in particular platinum, palladium, rhodium and/or the like is provided as catalyst.
47. Roller according to claim 26 ,
characterized in that
the fuel gas mass flow is controllable, for which purpose preferably a volumetric flow measurement device (30) and a corresponding control valve (28) are provided.
48. Roller according to claim 26 ,
characterized in that
the fuel gas concentration in the air is controllable, for which purpose preferably a fuel gas sensor (32) and a corresponding control valve (28) are provided.
49. Roller according to claim 26 ,
characterized in that
the roller temperature is controllable, for which purpose preferably a device for measuring the roller temperature and a corresponding control valve are provided.
50. Roller according to claim 47 ,
characterized in that
the respective control is performed on a zone basis at least in part.
51. Roller according to claim 26 ,
characterized in that
the duct structures provided on the surface of the roller core (54) are produced by etching at least in part.
52. Roller according to claim 26 ,
characterized in that
the duct structures provided on the surface of the roller core (54) are produced by milling at least in part.
53. Roller according to claim 26 ,
characterized in that
the coating with the catalyst is produced by rinse coating, dip coating or spray coating.
54. Roller according to claim 26 ,
characterized in that
the roller casing (56) is shrink-fitted onto the roller core (54) and/or is soldered to it.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004006514.4 | 2004-02-10 | ||
DE102004006514A DE102004006514A1 (en) | 2004-02-10 | 2004-02-10 | Gas-heated drum for papermaking assembly has catalytic inner mantle surface for combustion of gas fuel and air |
PCT/EP2005/050253 WO2005078190A1 (en) | 2004-02-10 | 2005-01-21 | Method for heating a roller, and heatable roller |
Publications (1)
Publication Number | Publication Date |
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US20070130768A1 true US20070130768A1 (en) | 2007-06-14 |
Family
ID=34801853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/597,848 Abandoned US20070130768A1 (en) | 2004-02-10 | 2005-01-21 | Method for heating a roller, and heatable roller |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070130768A1 (en) |
EP (1) | EP1713974B1 (en) |
CN (1) | CN1922362A (en) |
AT (1) | ATE390512T1 (en) |
CA (1) | CA2555809A1 (en) |
DE (2) | DE102004006514A1 (en) |
WO (1) | WO2005078190A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006013445A1 (en) * | 2006-03-17 | 2007-09-20 | Gvp Gesellschaft Zur Vermarktung Der Porenbrennertechnik Mbh | Roller with heating device |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612171A (en) * | 1968-08-06 | 1971-10-12 | Kalle Ag | Heatable or coolable roller |
US3700217A (en) * | 1971-06-14 | 1972-10-24 | Standard Int Corp | Cooling system for heated calender rolls |
US4688335A (en) * | 1986-02-18 | 1987-08-25 | James River Corporation Of Nevada | Apparatus and method for drying fibrous web material |
US4693015A (en) * | 1985-08-26 | 1987-09-15 | Hercules Incorporated | Direct fired cylinder dryer |
US4774747A (en) * | 1985-03-14 | 1988-10-04 | Eduard Kusters | Gas burner for the interior heating of hollow rolls |
US4824495A (en) * | 1987-04-10 | 1989-04-25 | Martin Marietta Corporation | Combustible coatings as protective delay barriers |
US4920623A (en) * | 1987-04-02 | 1990-05-01 | Schwabische Huttenwerke Gmbh | Heatable glazing or calendering roll |
US4964202A (en) * | 1988-05-02 | 1990-10-23 | Kleinewefers Gmbh | Heatable roll for use in calenders and the like |
US5076891A (en) * | 1988-12-21 | 1991-12-31 | Sulzer-Escher Wyss Gmbh | Heated roller and method for its operation |
US5326252A (en) * | 1991-09-04 | 1994-07-05 | Thomas Tonon | Catalytic combustion |
US5383833A (en) * | 1992-07-16 | 1995-01-24 | Sulzer-Escher Wyss Gmbh | Roll for heating or cooling running webs |
US5571066A (en) * | 1994-03-26 | 1996-11-05 | Voith Sulzer Finishing Gmbh | Heatable roll for calendering or smoothing systems |
US5586877A (en) * | 1995-07-20 | 1996-12-24 | A.J.C. | Infrared ray emitters with catalytic burner |
US5842851A (en) * | 1995-04-05 | 1998-12-01 | Application Des Gaz | Induced air catalytic burner, and apparatus incorporating such a burner |
US6100508A (en) * | 1996-08-17 | 2000-08-08 | Eduard Kusters Maschinenfabrik Gmbh & Co. Kg | Heated roller |
US6127654A (en) * | 1997-08-01 | 2000-10-03 | Alkron Manufacturing Corporation | Method for manufacturing heating element |
US6289797B1 (en) * | 1998-03-13 | 2001-09-18 | Valmet Corporation | Method for calendering a paper web and calender applying the method |
US6659926B2 (en) * | 2001-07-25 | 2003-12-09 | Voith Paper Patent Gmbh | Deflection controlled roll |
US6919543B2 (en) * | 2000-11-29 | 2005-07-19 | Thermoceramix, Llc | Resistive heaters and uses thereof |
US20070129237A1 (en) * | 2004-02-19 | 2007-06-07 | Satoshi Kadotani | Method and apparatus for forming catalyst layer on substrate constituting membrane electrode assembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3712202C1 (en) * | 1987-04-10 | 1988-09-08 | Kleinewefers Ramisch Gmbh | Process and device for gas heating of calender rolls |
DE3712203C1 (en) * | 1987-04-10 | 1988-09-08 | Kleinewefers Ramisch Gmbh | Device for gas heating of calender rolls |
FR2699993B1 (en) * | 1992-12-29 | 1995-02-24 | Gaz De France | Apparatus for drying sheet materials such as paper for example. |
DE19726645C2 (en) * | 1997-06-18 | 2001-07-05 | Fraunhofer Ges Forschung | Catalytic burner |
-
2004
- 2004-02-10 DE DE102004006514A patent/DE102004006514A1/en not_active Withdrawn
-
2005
- 2005-01-21 CN CNA2005800044935A patent/CN1922362A/en active Pending
- 2005-01-21 EP EP05701579A patent/EP1713974B1/en not_active Not-in-force
- 2005-01-21 US US10/597,848 patent/US20070130768A1/en not_active Abandoned
- 2005-01-21 CA CA002555809A patent/CA2555809A1/en not_active Abandoned
- 2005-01-21 WO PCT/EP2005/050253 patent/WO2005078190A1/en active IP Right Grant
- 2005-01-21 DE DE502005003453T patent/DE502005003453D1/en not_active Expired - Fee Related
- 2005-01-21 AT AT05701579T patent/ATE390512T1/en not_active IP Right Cessation
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612171A (en) * | 1968-08-06 | 1971-10-12 | Kalle Ag | Heatable or coolable roller |
US3700217A (en) * | 1971-06-14 | 1972-10-24 | Standard Int Corp | Cooling system for heated calender rolls |
US4774747A (en) * | 1985-03-14 | 1988-10-04 | Eduard Kusters | Gas burner for the interior heating of hollow rolls |
US4693015A (en) * | 1985-08-26 | 1987-09-15 | Hercules Incorporated | Direct fired cylinder dryer |
US4688335A (en) * | 1986-02-18 | 1987-08-25 | James River Corporation Of Nevada | Apparatus and method for drying fibrous web material |
US4920623A (en) * | 1987-04-02 | 1990-05-01 | Schwabische Huttenwerke Gmbh | Heatable glazing or calendering roll |
US4824495A (en) * | 1987-04-10 | 1989-04-25 | Martin Marietta Corporation | Combustible coatings as protective delay barriers |
US4964202A (en) * | 1988-05-02 | 1990-10-23 | Kleinewefers Gmbh | Heatable roll for use in calenders and the like |
US5076891A (en) * | 1988-12-21 | 1991-12-31 | Sulzer-Escher Wyss Gmbh | Heated roller and method for its operation |
US5326252A (en) * | 1991-09-04 | 1994-07-05 | Thomas Tonon | Catalytic combustion |
US5383833A (en) * | 1992-07-16 | 1995-01-24 | Sulzer-Escher Wyss Gmbh | Roll for heating or cooling running webs |
US5571066A (en) * | 1994-03-26 | 1996-11-05 | Voith Sulzer Finishing Gmbh | Heatable roll for calendering or smoothing systems |
US5842851A (en) * | 1995-04-05 | 1998-12-01 | Application Des Gaz | Induced air catalytic burner, and apparatus incorporating such a burner |
US5586877A (en) * | 1995-07-20 | 1996-12-24 | A.J.C. | Infrared ray emitters with catalytic burner |
US6100508A (en) * | 1996-08-17 | 2000-08-08 | Eduard Kusters Maschinenfabrik Gmbh & Co. Kg | Heated roller |
US6127654A (en) * | 1997-08-01 | 2000-10-03 | Alkron Manufacturing Corporation | Method for manufacturing heating element |
US6289797B1 (en) * | 1998-03-13 | 2001-09-18 | Valmet Corporation | Method for calendering a paper web and calender applying the method |
US6919543B2 (en) * | 2000-11-29 | 2005-07-19 | Thermoceramix, Llc | Resistive heaters and uses thereof |
US6659926B2 (en) * | 2001-07-25 | 2003-12-09 | Voith Paper Patent Gmbh | Deflection controlled roll |
US20070129237A1 (en) * | 2004-02-19 | 2007-06-07 | Satoshi Kadotani | Method and apparatus for forming catalyst layer on substrate constituting membrane electrode assembly |
Also Published As
Publication number | Publication date |
---|---|
CN1922362A (en) | 2007-02-28 |
EP1713974A1 (en) | 2006-10-25 |
CA2555809A1 (en) | 2005-08-25 |
EP1713974B1 (en) | 2008-03-26 |
WO2005078190A1 (en) | 2005-08-25 |
ATE390512T1 (en) | 2008-04-15 |
DE102004006514A1 (en) | 2005-08-25 |
DE502005003453D1 (en) | 2008-05-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: VOITH PAPER PATENT GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DOELING, FABIAN;REEL/FRAME:018081/0615 Effective date: 20060608 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |