EP0911445A2 - Appareil pour la fabrication ou le traitement d'un matériau en bande - Google Patents

Appareil pour la fabrication ou le traitement d'un matériau en bande Download PDF

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Publication number
EP0911445A2
EP0911445A2 EP98112622A EP98112622A EP0911445A2 EP 0911445 A2 EP0911445 A2 EP 0911445A2 EP 98112622 A EP98112622 A EP 98112622A EP 98112622 A EP98112622 A EP 98112622A EP 0911445 A2 EP0911445 A2 EP 0911445A2
Authority
EP
European Patent Office
Prior art keywords
material web
cylinder
gas
combustion
hot gas
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.)
Withdrawn
Application number
EP98112622A
Other languages
German (de)
English (en)
Other versions
EP0911445A3 (fr
Inventor
Guenter Halmschlager
Walter Holzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
Voith Paper Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19752562A external-priority patent/DE19752562A1/de
Application filed by Voith Sulzer Papiermaschinen GmbH, Voith Paper Patent GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0911445A2 publication Critical patent/EP0911445A2/fr
Publication of EP0911445A3 publication Critical patent/EP0911445A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/022—Heating the cylinders
    • D21F5/025—Heating the cylinders using combustion gases
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/20—Waste heat recovery

Definitions

  • the invention relates to a machine for manufacturing or processing a material web, in particular Paper or cardboard web, according to the preamble of Claim 1 and a method for drying a Material web, in particular paper or cardboard web, according to the preamble of claim 12.
  • the machine includes at least one the combustion gases and / or infrared radiation a combustion device that can be heated directly Cylinder over which the web of material alone or is performed together with a support band.
  • at least one blow box is provided by means of which the material web and / or the A hot gas can be applied to the support band, the gas, at least partially, combustion gas is or is heated by the combustion gases, can be high with low energy input Drying performance can be achieved.
  • the one with the cylinder into a compact one Unity of the blow box is the Drying improves, resulting in high evaporation rates can be achieved in small areas, so that the number of times for drying the web of material required cylinders can be reduced.
  • the heat transfer medium here the combustion gases from the combustion device, not changed, but immediately is used to heat the cylinder.
  • the hot gas is combustion gas, respectively a gas mixture that contains combustion gases.
  • the combustion gas fulfills that of the hot gas criteria, namely it is clean and dry enough so that it goes straight to the web can be blown. If the combustion gas too moist and / or too contaminated is, then according to a further embodiment the combustion gas for heating the hot gas be used by means of the blow box is blown onto the material web.
  • combustion gases from the incinerator in connection with the blow box can with the same energy input Drying performance - compared to drying with steam-heated cylinders just by applying them of the hot gas on the material web increased become. Furthermore, the multiple use the combustion gases, i.e. for several facilities, the effort for heat exchangers for energy recovery from the exhaust air of the incinerator be reduced. In some cases there is even no need for heat exchangers.
  • An embodiment of the machine is preferred, which is characterized by the fact that it is called Gas exhaust air from the blow box and / or fresh air is feedable.
  • the exhaust air from the blow box points a higher temperature than the ambient or Fresh air, so that the energy expenditure to heat the exhaust air to the desired temperature, with which the hot gas hits the material web to be blown is less than when heating of fresh air.
  • the temperature at which hot gas is blown onto the material web preferably in a range from 250 ° C to 450 ° C.
  • the combustion gas directly that is, without changing the Heat transfer medium, blown onto the material web, so the desired temperature is achieved by mixing of exhaust air and / or fresh air.
  • the heat transfer medium changed that is, the combustion gas another gas is used, for example Exhaust air from the blow box and / or Fresh air to heat up.
  • the change of the heat transfer medium for example, if the moisture content of the combustion gases is too high and / or if they are so dirty, that is, having particles or with lead, so that an impairment of the material web quality is to be expected. In both cases is with a relatively low High drying performance possible, what besides the economic benefits also contributes to the relief of the environment.
  • the combustion device with Oil or a flammable gas is combustible.
  • gas is advantageous Fuel because its combustion gases on the one hand pollute the environment only to a small extent and on the other hand, compared to that of combustion combustion gases from oil cleaner are.
  • the combustion gases generated during gas combustion can in many cases directly by means of of the blow box blown onto the material web be, the temperature of the gas here too by adding exhaust air from the blow box and / or fresh air is adjustable.
  • An embodiment is particularly preferred the machine, which is characterized in that the Combustion device inside the cylinder is arranged.
  • the cylinder serves as Combustion chamber for the generation of hot gas for the Heating of the cylinder and for the blow box.
  • the "combustion chamber” thus also serves as an efficient one Heating the material web and / or preferably the moisture cross profile control using the Cylinders, as well as the generation of hot gas for the blow box.
  • the one flowing out of the cylinder Exhaust air, i.e. the combustion gases can directly the blow box or a heat exchanger for Heating of the hot gas supplied to the blow box become.
  • the combustion device can be attached to the outside of the cylinder or to place nearby and the combustion gases to lead inside the cylinder. Regardless of the arrangement of the combustion device their combustion gases are drying the web of material used, which on the one hand the Intensity of drying increased and on the other hand the combustion of the fuel used released energy used to a large extent become.
  • a further advantageous embodiment preferably points over the entire Blow box width of the material web - seen several across the running direction of the material web Zones that are preferably separate from each other can be acted upon with the hot gas.
  • the temperature and / or the amount of hot gas is adjustable in the respective zone, whereby in advantageously a control of the Moisture cross profile is possible.
  • the task is also solved with a method which has the features mentioned in claim 12.
  • a blow box for example Suction blow box, off, with its help a hot gas on the material web and / or a the support band supporting the material web is applied becomes.
  • the hot gas is from the combustion gases the combustion device, the at least one Cylinder is directly heated, heated or is -at least partially- combustion gas. Due to the multiple use of the combustion gases for the Drying process of the material web can be used for the Drying the amount of energy used be reduced.
  • the use is also used to solve the problem the combustion gases one of the direct heating a combustion device serving as a cylinder proposed according to claim 19.
  • the combustion gas is preferably after flowing out of the Cylinder onto the material web using a blow box blown, causing high evaporation rates can be achieved on small areas.
  • the hot Gas additionally or exclusively on a corresponding temperature-resistant, supporting the material web Support belt / dryer fabric is blown. At a correspondingly large open area of the dryer fabric the drying performance is not significantly reduced.
  • the only figure shows schematically part of a machine 1 for manufacturing a material web 3 shown in dashed lines, for example paper or cardboard web, namely one Section of the dryer section 5 of the machine 1.
  • the dryer section 5 here comprises several heatable Cylinder for drying the material web 3, of which in the figure only cylinders 7 and 9 one single-tier dryer group of dryer section 5 is shown are.
  • Below the cylinders 7, 9 is one Deflection roller 11 arranged, for example by a suction roll is formed.
  • suction rolls are known so that they are not described in detail become.
  • the material web 3 is together with a also referred to as a dryer fabric or felt gas and / or liquid-permeable support band 13 initially seen in the direction of travel of the material web 3 (Arrow 15) - over the cylinder 7, then the deflection roller 11 and then guided over the cylinder 9. While the material web 3 over the cylinder 7, 9 is guided, this is from the prestressed Support band 13 pressed against the circumference of the cylinder. When transferring the material web 3 over the deflection roller 11 this lies on the outside on the support belt 13 on.
  • a dryer fabric or felt gas and / or liquid-permeable support band 13 initially seen in the direction of travel of the material web 3 (Arrow 15) - over the cylinder 7, then the deflection roller 11 and then guided over the cylinder 9. While the material web 3 over the cylinder 7, 9 is guided, this is from the prestressed Support band 13 pressed against the circumference of the cylinder. When transferring the material web 3 over the deflection roller 11 this lies on the outside on the support belt 13
  • the combustion device 17 can for example of one or more with a liquid or gaseous fuel or combustible mixture acted upon Nozzle tube / nozzle tubes are formed, which has a number of nozzles.
  • the fuel emerging from the nozzles is in the Burned inside the cylinder 7 and the resulting Combustion gases directly for heating the Cylinder 7 used.
  • gaseous fuel for the generation of infrared radiation is used, which in turn the cylinder 7 heats up.
  • the combustion device 17 can therefore also formed as a known infrared radiator be what will be discussed in more detail below becomes.
  • the temperatures can reach up to 900 ° C and above, for direct heating of the cylinder 7.
  • the directly heated one Cylinder 7 is usually up to about 160 ° C Heated up to 350 ° C. If necessary, the cylinder 7 can also be heated to temperatures above 350 ° C.
  • the fact that the combustion device 17 inside of the cylinder 7 is arranged with a relatively low energy use an effective railway heating can be realized, so that high evaporation rates possible are.
  • the machine 1 further comprises one of the deflecting roller 11 associated blow box 19, by means of which a hot gas on the outside around the deflecting roller 11 guided material web 3 can be blown.
  • the Gas has a temperature which is preferably in is in a range from 250 ° C to 450 ° C.
  • hot Gas can be used directly when firing the cylinder 7 resulting combustion gases / exhaust gases from the Combustion device 17, which as exhaust air from the Flowing out of the cylinder 7 can be used.
  • a prerequisite for this is, for example, that whose moisture content does not exceed a limit and / or the combustion gases are clean enough are so that the material web is not dirty becomes.
  • the temperature of the flowing out of the cylinder 7 Combustion gases is, for example 600 ° C. If this temperature is too high, it can by adding exhaust air from the blow box 19 and / or fresh air the temperature of the combustion gases set to a desired value become.
  • the cylinder 7 is the one shown in the figure Embodiment another combustion device 17 'assigned by an infrared radiator 21 is formed. This is outside the Cylinder 7 attached and extends over a Circumferential area of the cylinder 7 and at least essentially across the width of the web 3.
  • the combustion device 17 'of several arranged side by side Infrared radiators is formed by means of the material web 3 across the width, for example with different intensity, heatable is. It is a control of the Moisture cross profile of the material web 3 possible.
  • the Infrared radiator 21 generated during the combustion of Gas or a gas mixture infrared radiation, directly on the permeable support band 13 works, which prevents web breaks, at least but can be reduced.
  • Fuel mixture can be generated for direct heating of at least one cylinder, for example, the cylinder 7 can be used.
  • the combustion gases of the infrared radiator 21 by means of suitable facilities in the interior of the cylinder 7 passed.
  • the inside of the cylinder 7th arranged combustion device 17, for example formed by an infrared radiator can be directly heated and the cylinder 7 additional, mounted outside the cylinder 7
  • Combustion device 17 'the material web 3 and the support band 13 is heated by infrared radiation.
  • the cylinder 7 is only from the outside combustion device attached to cylinder 7 17 'directly heated.
  • the infrared radiator 21 can also do this, for example by means of steam-heated cylinder 9, the deflection roller 11 and / or another / another cylinder / roller be assigned to machine 1.
  • the Heat radiation from here within the dryer section 5 used the web production machine Infrared radiator 21, which for example also in Coating machines can be used, so it works - depending by arrangement- directly onto the material web 3 or on the support band 13. It has been shown that at an arrangement of the infrared radiator 21 on the outside the deflection roller 11 so that the heat radiation directly guided to the outside via the deflection roller 11 Material web 3 acts, for example in the case of heavy items Cardboard is easily possible.
  • the cylinder 7 two further combustion devices 17 '-in Direction of travel of the material web 3 - viewed upstream, those formed by infrared radiators 21a and 21b become. These are opposite each other at a distance arranged, whereby a space 23rd is formed by the material web 3 and that Support belt 13 are performed.
  • the infrared heater 21a acts directly on the support band 13 and the infrared radiator 21b on the material web 3, whereby this is heated and dried.
  • the exhaust gases / combustion gases the infrared radiator 21a, 21b can be used to directly heat a cylinder, for example, the cylinder 7 used be used as a hot gas or for heating of the hot gas for the blow box 19, depending on the arrangement of the blow box 19- either on the support belt 13 or the material web 3 is inflated.
  • a particularly preferred embodiment has the blow box 19-cross to the direction of the Material web 3 seen (arrow 15) - several zones on, preferably separately from each other with a hot gas can be applied. So it is possible, for example in the middle of the Blow box 19, a hot gas on the material web 3 to bring up a higher temperature and / or higher pressure and therefore a higher blowing speed has than that in the area of the web edges applied gas. This can be advantageous Way the moisture cross profile of the material web 3 by means of a controller, not shown in the figure adjusted or defined influenced become.
  • the moisture cross profile of the material web on one any place after the blow box 19 to Example before rolling up the material web by means of a regulation that affects the zones the blow box 19 and / or the directly fired one Cylinder controls, automatically monitors or optimized.
  • the Blow box 19 can also be assigned to cylinder 9, so that the flowing out of the blow box 19 hot gas on the material web 3 to the circumference of the cylinder 9 pressing, correspondingly temperature-resistant Support tape 13 is applied.
  • the heating of the support band 13 can Drying of the material web can be improved.
  • the hot gas is additional on the circumference of the cylinder 9 Material web applied immediately, since that hot gas through the mesh or pores of the gas-permeable support band 13 passes through.
  • the combustion gases are one of the direct heating a cylinder, for example a drying cylinder, serving incinerator with the help a blow box on the material web and / or the support belt on which the material web rests, apply or the combustion gases for heating another gas, preferably air then use it on the material web is applied.
  • a combination of the two possible uses of the combustion gases possible that is, the hot gas that is applied to the web of material can, partly from combustion gas and from at least one more, by means of the combustion gases heated gas exist.
  • each of the Drying the material web serving cylinders so also the cylinder 9, a separate combustion device 17 is assigned, which is preferably inside the cylinder is attached, which is special is space-saving.
  • a combustion device for direct Heating several, for example two or three Cylinders.
  • the Blow box 19 designed as a suction blow box, the on its side facing the material web but above all on its edges of the material web 3 facing ends has zones with a negative pressure are acted upon.
  • This can in middle area of the also as high performance hood designated suction blow box on the material web 3rd applied hot gas that is at least partially in Flows in the direction of the web edges, suctioned off and for example for setting the temperature distribution of the hot gas across the width of the material web be used. At the same time, overdrying the web edges are avoided.
  • combustion devices 17 and 17 'and the Blow box 19 its structure and function purely exemplary based on the dryer section of a web production machine have been described also in the wet section and / or press section the material web manufacturing machine used become. Furthermore, their use is within a web processing machine, for example Coating machine, possible.
  • the dryer section 5 can be one or more single-row and / or have two-tier dryer groups.
  • the advantages resulting from the invention Use the combustion gases one of the most direct Heating a cylinder-serving combustion device surrender, of course also in a two-tier dryer group of Dryer section 5 of machine 1.
  • the one that directly fires a cylinder Combustion device 17, 17 'in another Area of the dryer section 5 is arranged as the or that with the combustion device 17, 17 'connected blow boxes 19. These can both in one of the combustion devices 17, 17 ' - seen in the direction of travel of the material web 3 (arrow 15) - upstream and downstream part of the Machine 1 can be used.
  • blow box 19 is a cylinder and / or one Deflection roller of a single / double row dryer group is assigned and the associated with the blow box Combustion device 17, 17 'in a downstream two- / single-row dryer group used becomes.
  • Combustion device 17, 17 ' is only a combustion device 17, 17 'is provided, all of the heated cylinders in a dryer group fired directly.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP98112622A 1997-09-29 1998-07-08 Appareil pour la fabrication ou le traitement d'un matériau en bande Withdrawn EP0911445A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19742856 1997-09-29
DE19742856 1997-09-29
DE19752562 1997-11-27
DE19752562A DE19752562A1 (de) 1997-09-29 1997-11-27 Maschine zur Herstellung oder Bearbeitung einer Materialbahn

Publications (2)

Publication Number Publication Date
EP0911445A2 true EP0911445A2 (fr) 1999-04-28
EP0911445A3 EP0911445A3 (fr) 2000-04-26

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ID=26040397

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Application Number Title Priority Date Filing Date
EP98112622A Withdrawn EP0911445A3 (fr) 1997-09-29 1998-07-08 Appareil pour la fabrication ou le traitement d'un matériau en bande

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EP (1) EP0911445A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1593776A1 (fr) 2004-05-07 2005-11-09 Voith Paper Patent GmbH Section de séchage pour machine pour fabriquer une bande de matière fibreuse
EP1995379A1 (fr) * 2007-05-23 2008-11-26 Johns Manville Procédé de séchage de produits de tapis
AT505932B1 (de) * 2008-03-26 2009-05-15 Andritz Ag Maschf Vorrichtung und verfahren zur trocknung bewegter materialbahnen
RU2517803C2 (ru) * 2009-02-11 2014-05-27 Ска Хайджин Продактс Аб Устройство и способ сушки полотна тонкой бумаги с использованием возврата пара

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206718B (de) * 1959-04-22 1965-12-09 Beloit Iron Works Trockenvorrichtung fuer Faserstoffbahnen
US4146361A (en) * 1972-09-07 1979-03-27 Cirrito Anthony J Apparatus for hot gas heat transfer particularly for paper drying
US4324613A (en) * 1978-03-31 1982-04-13 Douglas Wahren Methods and apparatus for the rapid consolidation of moist porous webs
FR2559514A1 (fr) * 1984-02-10 1985-08-16 Andritz Ag Maschf Dispositif pour une presse-secherie de machines a papier
EP0427218A2 (fr) * 1989-11-10 1991-05-15 Voith Sulzer Papiermaschinen GmbH Système de séchage
US5553391A (en) * 1995-06-05 1996-09-10 Bakalar; Sharon F. Method and apparatus for heat treating webs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206718B (de) * 1959-04-22 1965-12-09 Beloit Iron Works Trockenvorrichtung fuer Faserstoffbahnen
US4146361A (en) * 1972-09-07 1979-03-27 Cirrito Anthony J Apparatus for hot gas heat transfer particularly for paper drying
US4324613A (en) * 1978-03-31 1982-04-13 Douglas Wahren Methods and apparatus for the rapid consolidation of moist porous webs
FR2559514A1 (fr) * 1984-02-10 1985-08-16 Andritz Ag Maschf Dispositif pour une presse-secherie de machines a papier
EP0427218A2 (fr) * 1989-11-10 1991-05-15 Voith Sulzer Papiermaschinen GmbH Système de séchage
US5553391A (en) * 1995-06-05 1996-09-10 Bakalar; Sharon F. Method and apparatus for heat treating webs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1593776A1 (fr) 2004-05-07 2005-11-09 Voith Paper Patent GmbH Section de séchage pour machine pour fabriquer une bande de matière fibreuse
EP1995379A1 (fr) * 2007-05-23 2008-11-26 Johns Manville Procédé de séchage de produits de tapis
AT505932B1 (de) * 2008-03-26 2009-05-15 Andritz Ag Maschf Vorrichtung und verfahren zur trocknung bewegter materialbahnen
RU2517803C2 (ru) * 2009-02-11 2014-05-27 Ска Хайджин Продактс Аб Устройство и способ сушки полотна тонкой бумаги с использованием возврата пара

Also Published As

Publication number Publication date
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