FI118389B - A treatment procedure for a fiber web - Google Patents

Description

118389

FIELD OF THE INVENTION The present invention relates to a process for controlling a fibrous web, e.g. . More particularly, the present invention relates to a method and an arrangement for controlling a fiber web 10 processing process in a fiber web machine.

Efficient ventilation or ventilation is required in the fiber web treatment unit as moisture is evaporated from the fiber web. Insufficient air conditioning or ventilation leads to condensation of moisture in the air to colder surfaces. The air conditioning 15 and ventilation must also be provided in the transverse direction of the fiber web, i.e. the MD direction, i.e. in the CD direction, so that the drying of the fiber web is not uneven.

* · * · · • · ·. 'It is already known that the treatment unit's climate is controlled by removing the moist · · * 20 air and replacing it with replacement air. The main disadvantages of such a solution are the need for large volumes of air and large air conditioning systems, which results in an inexpensive investment and operating costs.

Typical air handling and fiber web actuators: 25 water humidifiers; steam box; chemical applicator; roller cleaning machine; • m • »«: · ί 1 air blast; drying device; a radiation drier, or other device for the treatment of air and / or the fiber web; is mounted on a fixed CD-directional bar. In this case, it is a weakness that the suction and replacement air valves are fixed and their purpose ·· »·; * * '. often disadvantageous places.

118389 2 To ventilate the vicinity of a processing unit, preferably a calender, more preferably a multi-roll calender, it is known in the prior art that vigorous ventilation is required because of the strong evaporation that: inadequate ventilation leads to condensation of the moisture in the air 5 on the colder surfaces, so that ventilation should be carried out as evenly as possible in the CD direction, however, air conditioning solutions are usually fixed installations in the CD direction, e.g.

The closest prior art document DE 19904891 C1 discloses a solution in which dried air is blown into an interior space defined by the calender walls.

It is an object of the present invention to provide a device which dries air in a processing unit, for example a calender, dryer section, condebelt dryer or the like, in connection with the manufacture or finishing of the fibrous web. Another object of the present invention is to enable the control and adjustment of the processing process m '. with a moving actuator acting on the air handling and the fibrous web. The present • · ·. A third object of the invention is to provide an air-conditioning solution for ventilating the vicinity of a processing unit, preferably a calender, more preferably a multi-roll calender.

The objectives of the present invention can be achieved generally by the method of controlling the fiber web processing process of the fiber web machine according to the invention, wherein the fiber web is transported in a processing unit with a web of fiber. applying at least one heating effect by means of a contact, for example a roll contact or a cylinder contact, or · ·: non-contact such as fluidized bed drying or IR drying (IR, Infrared), for example to adjust and / or control the fiber web processing process. · In the processing unit, at least one tt ·· • * * * is exposed to the air surrounding the fibrous web. a measure that affects the moisture content of the fibrous web and / or the surrounding air.

· * ♦ • · • • • * ♦ ♦ ♦ 3 3 3 118389

According to a preferred embodiment of the method according to the invention, the air surrounding the fibrous web is dried in a processing unit by condensing the moisture in the air to a cooling and / or imaging device and / or a moisture condensing device on a cooled or cooler surface.

According to another preferred embodiment of the method according to the invention, air is blown towards the fibrous web or the air surrounding the fibrous web is aspirated by an actuator whose position, position or position can be displaced. In this case, it is preferable to use an actuator which may be a blow-off valve or a suction valve or a nozzle or a duct system connected to such an actuator.

The objects of the present invention may also generally be achieved by an arrangement of the invention for controlling a fiber web processing process in a fiber web machine wherein the fiber web passes through a processing unit having at least one heating effect by contact, for example roll contact or cylinder contact, or non-contact, e.g. drying (IR, Infrared). . such as to adjust the fiber web processing process and / or «· · *. to control the air surrounding the fibrous web in the processing unit, at least one action is taken which affects the humidity of the fibrous web and / or the surrounding air.

According to a preferred embodiment of the arrangement of the invention, the treatment unit has a cooled or colder surface to condense the moisture in the air.

According to another preferred embodiment of the invention, the actuator which blows air towards the fiber web or sucks air around the fiber web must be moved. In this case, it is preferable that the actuator is a blow-off valve or a * ··· suction valve or nozzle or the like or a duct system connected to such an actuator.

· * · * · «• • • • • • • 4 118389

At the point of contact between the fibrous web and the roll or cylinder, the surface facing the fibrous web may be, for example, a metal surface or a polymeric surface of the roll or cylinder or belt. The contactless effect is obtained as mentioned above, for example, by drying in a fluidized-bed dryer or an IR dryer.

The advantages of the invention are as follows.

a) Close to the processing unit, for example, the calender can be followed by a controlled cold dryer surface which condenses moisture in a controlled manner, without the mixing causing 10 processing processes or the calender itself. This increases the reliability of the fiber web machine, b) the cleaner environment of the treatment unit is free of condensing and contaminating surfaces, c) the large air conditioning system can be omitted or reduced, thus eliminating or at least substantially moving large air masses (d) the condensate can be drained off in a controlled manner; . e) does not consume energy, since cooling water is usually available in large quantities, eg

F) energy can also be recovered automatically, for example, in cooling water.

If desired, the energy can be utilized, but the recovery temperatures are relative.

• 1 · ··· · low (30-40 ° C). The recovered energy can be used to heat buildings or • · · ·· - 'by re-feeding the process, · ♦ 1 • · * ... 1 g) the recovered energy can be reused in a fiber web machine to heat 25 headbox stocks or coating station paste (viscosity can • · ·,: · Changes slightly).

·· · ...: h) Because condensation and ventilation problems are difficult to predict. In the design phase, the present invention allows air conditioning of a fiber web machine to be easier to tune, for example, during the startup phase of the machine. , and the introduction of a fiber web machine increases.

Other specific features and advantages of the method and arrangement of the present invention will be apparent from the following specific description of certain preferred embodiments of the invention and the appended claims which define the scope of the present invention.

The present invention will now be described, by way of example only, by means of preferred embodiments of the present invention relating to a papermaking machine calender, and with reference to the accompanying drawings, in which FIG. 1 schematically illustrates the working principle of the first embodiment of the invention, FIG. 2 schematically shows an embodiment of FIG. 1 without the cooling and / or drying device and / or the humidity condensing device, FIG. 3 schematically shows another embodiment of FIG. a refrigeration and / or drying device and / or a moisture condenser, • · ·; , FIG. 4 schematically illustrates another embodiment of the invention, and S11-120 FIG.5 schematically represents a third embodiment of the invention.

In the method and arrangement according to the embodiments shown in the figures, to control the process of treating the fibrous web W, the fibrous web is transported to the fibrous web machine 1, 1, 2, ..., at least one pair of rolls. 31.32 through the nip. In the nip formed between the heated 25 thermal roller 31 and its soft roll roll 32 acting as a counter roll, the fibrous web is subjected, among other things, to a compressive load and a thermal effect, · · · ϊ. · For irreversible deformation of the fibrous web.

• · · 2 t • · 1 • · • · * · 1 • · * · * »» 1 · • 1 · 2 • »i • · 6 118389

In the calender 31, 32, to regulate and / or control the process of treating the fibrous web W, which is a feature of the invention, at least one action affecting the humidity of the fibrous web and / or its surrounding air is or is directed. Such an operation is typically air conditioning 5 or air drying.

Thus, in the context of the present invention, the term "affecting the air surrounding the fibrous web" is generally understood to mean any such fiber processing unit W 21,22,23, such as a press unit or dryer unit, in particular a paper machine dryer unit and / or board machine dryer unit or coating unit. or in a calender, which may be a multi-nip calender or a soft calender or a belt calender or a metal belt calender, or in an equivalent unit, affecting the moisture of the fibrous web and / or surrounding air, thereby adjusting and / or controlling the fibrous web processing.

Such measures include ventilation and / or air conditioning in the treatment unit, t1t. reduction of the air mass of the processing unit or moisture in the fibrous web, blows * ·· toward the fibrous web and / or suction away from the fibrous web.

• · «• ·. . Referring to FIG. 1. In the embodiment of Figure 1, the processing unit is a calender 21.22 consisting of two # · a • · · * 'V consecutive tracks. The calender can be encapsulated, which is illustrated by the dashed line 23. The advantage of the encapsulated calender unit is that the air in the engine room, such as the engine room, is separated from the air surrounding the fibrous web. It must be emphasized 25 that the stiffness or type of rolls or the nipples or the fiber web path does not per se • · · • · 1! of importance for the operation of the present invention, since the essential application of the present invention is to influence the air surrounding the fibrous web, whereby; · The applications of the present invention include all units of a fiber web machine ····; '· Regardless of roll type (s) or type or nipples.

·· ♦ ·· 1 • · • «··· · • · i • · ♦ • a 7 118389

In the calender 21.22 of the embodiment of FIG. 1, the fibrous web W travels through the roll nipples. Hereby, the effect on the air surrounding the fibrous web can be controlled, for example, by the air cooling and / or imaging device 15 of F1G.2 and / or the humidity condensing device 15 or by the air cooling and / or imaging device 16 or FIG. According to the invention, the calender is provided with an air circulation which allows air to be circulated through the air cooling and / or imaging device and / or the moisture condensing device 15, 16. In the following, in connection with FIGS. 2, FIG.3, FIG.4, FIG.5 and FIG.6, the air cooling and / or imaging device and / or the humidity condensing device and / or the air conditioning device are referred to for simplicity as the drying unit.

According to the embodiment of Figure 2, the flow of air in the calender 21, 22 occurs through the flow solids 11 of the stationary and cooled cooling unit 15 of the drying unit 15. The cooling medium flows into the flow passages separating the flow passageway 51 in the successive flow passages 2. The outer surfaces of the passageways defining the passageway are then cooled, resulting in the flow of air. . moisture condenses on the cold surfaces of the partitions. The air will then dry out. 1 in the flow channels and condensed water discharged from the air flows as a liquid into the condensate collecting means 41 below the baffles, e.g., the collecting basin and further / to the discharge means, e.g., the outlet.

In the exemplary embodiment of FIG. 2, the drying unit 15 is preferably a counter-flow or heat exchanger operating on a downstream basis. In such a heat exchanger 25, the baffles 51 and the flow passages 2 and • · · · · · · · · · · · · · · · · · · · · · · · · · · · olat 11 11 11 separators separated by the baffles are typically maintained.

* • t • · • a aaa •.:. In accordance with the embodiment of FIG. 3, the flow of air in the calender 21, 22 is 7 · · 1, through a stationary annular passage 12. The annular passageway is defined by · 1 · v * aa a · · * aa a • aa a • a 118389 externally rotatable jacket portion 42 and an internally rotatable heat exchange cell 52 followed by a circulation of cooling medium such as cooling water flow 2. In this case, the rotating outer surface of the heat exchanger cell acts as a condensation surface on which the moisture in the filing air condenses and the air dries. The outer surface of the rotary heat exchanger cell 52 may be grooved and / or ribbed 53 to increase the condensation area.

Condensation / condensation water is discharged from the outer surface of the inner portion partly by the action of centrifugal force and partly by the scraper blade 43 acting on the sheath acting on the outer surface of the heat exchanger cell, for example a rubber 10, e.g. Finally, the condensate / condensate water is discharged to the condensate / condensate water collecting means 41, for example to the collecting basin and further to the discharge means, e.g. However, when the condensation surface of the heat exchanger cell 52 is grooved and / or ribbed, the possibility of applying a doctor blade should be considered.

15

The calendered fiber web dries considerably in the calendar 21, 22, 23, up to 5% units, with volatile amounts of water, for example, in a 10 m wide multi roller. . of the order of 0.6-1.0 kg / s. The energy required for such evaporation is approximately 1.5-2.0 MW, • ·· I. ' which, for example, can be imported in the calendar mainly by means of thermo rolls 31. Correspondingly, 1. 20 vols. when condensed, moist air releases the same amount of energy that is drained away * 9. . by means of a cooling and / or drying device and / or a condenser air traced to the calender * »· *** # · a condenser 2 having a cooling medium circulation, for example •« «·· ♦ 1 cooling water circulation. In order to condense the water evaporated by the 10 m calendar, ··· 1 cooling water must be introduced at about 50 dm '/ s if ΔΤ is 10 ° C. This is possible because in practice, most of the water 25 is available. In any case, it is preferable for the cooling unit to transfer • 1 jää of heat to the cooling water to recover the heat.

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• 9 • 9 • 9 · 9 · · The essential criteria are the performance of the board and especially its • 9 «·. · 1 1. heat transfer coefficient to degrade the condensable water layer (ie film). Typical 9 ·· * • 91 9 · • 9 * 99 9 m • 1 1 • 91 • 9 9 118389 calender air mass (50 ° C, 50% RH) condenses at a temperature of about 35-45 ° C. Cooling of the condensing surface at about 20 ° C produces a heat transfer coefficient of about 10-15 kW / m2K on the surface; a condensation area of about 10-20 mz is sufficient to achieve condensation power. By reducing condensation efficiency, a smaller area can be achieved.

Referring to FIG. 4, which illustrates an actuator 72, 73, 81 according to the present invention, the actuator typically comprises a valve 73, such as a replacement / blow valve or suction valve, and a valve associated nozzle 81 10 and valve associated conduit 72.

The actuator 72, 73, 81 is movable according to the basic idea of the invention, i.e. the position of the actuator can be moved at least in the direction of travel of the web. The actuator can then move in the direction of the support stack (not shown) of the roll stack 31,32, for example 15, along the support frame 70.

The most common roll stacks 31.32 are a substantially vertical roll stack that is. . shown in the figure, with a tilted roll stack and a roll stack with rollers rotating axes • · · *. * The line passing through is kneeling. Another possible direction of movement of the actuator for handling the fiber web W is the movement of the actuator along the direction of the machine line,, or generally the fiber web, for example, the I · * * · *: soft calender.

The present invention makes it possible for the actuator 25, 72, 73, 81, to position, and. Ϊ. - the direction or intensity of the blow or suction, or it ··. * · *. - piping channel 72 associated with the actuator, · »»

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• * • * »I · • · • *»

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• · 118389 ίο i. Seats, ii. position as well as iii. the position for blowing or suction can be adjusted.

In this context, it should be noted that various humidifiers and steam boxes and cleaning devices can also be used as actuators 72, 73, 81, each of which, individually and collectively, has a significant effect on the moisture of the fibrous web and / or the surrounding air.

A preferred actuator for affecting the moisture of the fibrous web and / or the surrounding air is a drying unit 15,16, which may also be, as stated above, an air condenser or air conditioning system. In the exemplary embodiment of FIG. 4, the actuator is provided at or below the support frame 70. In this case, the dried or humidified air can be supplied to the actuators 72, 73, 81. The actuator may be associated with, for example, a blow nozzle 81. It should be noted that the air supplied to the actuator may also come from outside the drying unit. One such preferred option is to take. ·. : air to actuator directly from calendar 21.22 or air conditioning * * · • · or air condenser.

• · i '20 • mm • · •. Such a movable actuator allows • · t! **. 1 - for different paper grades or at different speeds, the water humidifier i · * ". 1 position relative to the thermo roll nip can be varied and also fully positioned • · • · ** · at the track , eg thermo roll spacing, t 25 to accommodate different driving situations, the position of the steam boxes can be changed, • 1 · * ·· · - the position of the actuator can be changed, for example, with swing machines having different * M1 · '··· 1 paper grades driving mode, for example ^ | · mat nip / sub nip, ··· •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••· all rolls 31,32 require a portable cleaning device, with the advantage that the number of cleaning devices is minimized and there is no need to install a separate device for each roll.

Reference is further made to FIG. 4, which illustrates a solution for implementing actuator movement 72.73, 81. The actuators are mounted on the support frame 70 to a movable treatment platform 61, a treatment bridge 71, an elevator 74, or other means that allows movement on the track 21,22. The treatment platform, elevator or the like is designed so that it can be moved in the track with respect to the rolls 31, 32 to the desired position 10. The support frame 70 also has the necessary moving means for moving the actuator in the direction of the track. The most typical directions of movement to and from the operating position are: - the vertical direction according to FIG. 4, - the lateral direction, and 15 - in the case of a tilted track, the direction of the track angle.

The arrangement of FIG. 4 enables actuators 72, 73, 81, such as. positioning and / or direction of blowing / suction valves and replacement air valves and intake air valves 73 and these * ♦ # '. * ducts 72 or nozzles 81,

• · J

*, 20 adjustment, whereby the position of the actuators and / or the direction of extraction and blowing in the calender 21.22 of the fiber web W can be adjusted, if necessary f · · • · · * “, *. In addition, it is possible that extraction suction and blowing can be done when needed

»* I

··· · target the desired area in the calendar.

In accordance with the invention, the ductwork 72, e.g., the ductwork 72, associated with or forming an actuator 72,73, 81 is disposed in a positioning adjustable # ··· treatment level 61, a care bridge. 71, elevator 74, or other such movable positioning means, such as positioning, for example, the height position may be altered during the calender travel so as to obtain the desired actuator advantageously ··· •

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* 1 1 8389 12 Position of the blow-off valve or the intake air valve or the piping system associated with such a valve, for example a ventilation duct.

Referring to FIG. 5, a third preferred embodiment of the invention for air conditioning a calender environment is shown, particularly in connection with a multi-roll calender. Typically, in this embodiment, the calender 21.22 of the calender environment, i.e. at least the position of the actuators 72,73, 81 for the ventilation of the fibrous web W, the direction of blowing and / or suction generated by the actuator must be controlled. In this case, it is advantageous that the blowing and / or suction can be targeted by an actuator. With special regard to the present invention, it is preferable that the blowing and / or suction can be targeted to a region of condensation of moisture in the air.

In the third embodiment of the present invention according to FIG. 5, the ventilation duct 72 is located in connection with a position-adjustable treatment bridge 71, another 15 position-adjustable means of the elevator, a targeted ventilation effect or aeration effect or a blow effect or suction effect. ; the actuator 72,73, 81 may include a length adjustable nozzle portion 81 or actuator • 1 '. . 'Be of a length adjustable type, ie. the so-called. telescopic type. The invention's · · i *. 20, it is also possible that the treatment level (61, cf. FIG. 4) or the treatment bridge 71 or ·. , the support frame 70 of the elevator (74 cf. FIG. 4) is arranged to move along rail means arranged on the floor of the fiber web machine • · * · 2/1 /.

For moving the treatment bridge 71 also during the calender run so that the desired height of the actuators and / or their ducting can be achieved at the desired and advantageously targeted position. to provide a ventilation effect or aeration effect or a blowing effect or a ··· * suction effect, the air supply duct 80 associated with the duct system 72 is of a * · · length adjustable type, for example a so-called telescopic type.

···· · 3. The feed duct may be mated to, for example, the inside of a hydraulic bridge and / or a hydraulic bridge moving the treatment bridge and the feed duct 80 at its upper end.

According to the invention, it is preferable that the duct system includes a telescopic section 80 or other flow channel whose length can be varied in the vertical direction of the roller 21.22 or in the direction of travel of the web W 5. A preferred actuator for affecting the moisture of the fibrous web and / or the surrounding air is a drying unit 15,16, which may also be, as stated above, an air condenser or air conditioning system. In the exemplary embodiment of FIG. 4, the actuator is disposed below the support frame 70, lower or 10 below. In this case, the air which has been dried or the humidity is regulated can be introduced into a flow channel of variable length.

It is generally stated in connection with the invention that it is often necessary that the direction and intensity of the suction / blowing need to be adjusted. It is also advantageous here, particularly in the CD direction, to ensure uniform handling of the fibrous web W, so that ventilation and / or suction-related blowing and / or suction can occur in more than one CD-direction, with actuators 72, 73 acting on the air surrounding the fibrous web. 81 has more than one in the CD direction. alternatively * · I. 1 can be applied to the fibrous web in the CD direction by a single slot nozzle *. 20 through.

The air surrounding the fibrous web W can be influenced and the processing of the fibrous web in the calender 21, 22 can also be controlled so that the actuators 72.73 81 are controlled by the CD- • »* · 1 · ' In addition, the actuator valves can be moved in the CD direction, if necessary.

Figure 6 illustrates the processing of the fibrous web by means of a metal belt 5. Such.;. the metal belt may be used in substantially all of the units of the fiber web machine ····, · · ·, for example in the press unit, dryer unit, coating unit and calender 21, ♦ ♦ ♦ ♦ ♦ ♦ 14 118389 22. In the exemplary embodiment of FIG. 6, a metal belt processing the fibrous web passes through a thermal roller 31 and guide rollers 6, which are four in the exemplary embodiment of FIG. The guide rollers can be used to adjust the tension of the metal belt and to heat and cool the metal belt. The thermal roll may be in contact with the counter roll 32 to form a thermal roll N, whereby the metal belt and the fibrous web W to be processed pass through the roll roll. In the embodiment of FIG. 6, the drying unit is disposed below the thermal roller. Here, for example, moist air is supplied directly to and from the environment and / or ambient air of a thermal roller or roller pair consisting of a thermal roller and its counter roll, e.g., machine hall air, from which dried air 10 is led to a thermal roller 31 or aforementioned roller pair.

The invention has been described above only by way of a preferred embodiment which relates to a calender. As will be apparent to one skilled in the art, many variations and alternatives and solutions that provide a functionally equivalent functionality are possible within the scope of the inventive idea defined in the appended claims.

e ·. Thus, since the shaping and calendering of the fibrous web is dependent on many different parameters, these may be mentioned:

• «S

*. 20 - processing nip line load; • ·,. - external temperature affecting the fibrous web; • »i • t · - fiber web temperature, machine speed, humidity, thickness, properties and sweat •» «·· 1 · density; • · * · · · '- the radii of the processing unit rolls; 25 - elasticity of soft roll, • 2 «ί. ί ϊ and since the most important of the said parameters are the line load and the temperature of the heated 3 * ... 1 roll, such as a thermal roll, it is clear that the applicability of the present invention is not limited to the "According to Embodiment 1, the calender is applicable but the present invention can be applied to a fiber web in various units of a machine when the fiber web is affected by a roll. It may further be specifically mentioned that the actuator described above comprising a duct and a valve and a nozzle for providing a targeted effect may also be in themselves a humidifier, a steam box and / or a cleaning device having 5 essential effects on the fibrous web and / or humidity in the surrounding air.

Thus, it should be specifically emphasized that the scope of the present invention encompasses various contacts of the fiber web and the roll and / or cylinder, including: in the hood, - in the coating unit, drying cylinder contacts and fluid drying and IR drying.

15

Thus, in accordance with the basic idea of the invention, controlling the climate surrounding the processing of the fibrous web can influence the moisture and temperature of the fibrous web in a novel and inventive way which: • · · • · achieves process advantages, * ♦ · tm m t · 20 - provides improved runnability and reliability; . - drying unit, especially condensate removal becomes simpler, • · »I1V large air masses no longer have to be moved over long distances.

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Claims (20)

A method for controlling the process of treating a fibrous web (W) in a fibrous web machine 5 wherein the fibrous web is conveyed in a processing unit (21, 22, 23) in which the fibrous web is subjected to at least one heating effect by contact, e.g. IR, Infrared), characterized in that in the processing unit (21, 22, 23), the air surrounding the fibrous web 10 is subjected to at least one operation affecting and / or controlling the processing of the fibrous web (W). air humidity, wherein in the processing unit, the air surrounding the fibrous web (W) is dried by condensing the moisture in the air to a cooling and / or drying device and / or a moisture condensing device (15,16) on a cooled or colder surface. 15 Method according to claim 1, characterized in that air is blown towards the fibrous web (W) or the air surrounding the fibrous web is aspirated by an actuator (72, 73, 81) whose position can be displaced. A method according to claim 2, characterized in that the blowing is directed by a · · · * · "valve (73), for example a replacement air valve, or a nozzle (81) having a position or direction of blowing. or that the position or position of the plumbing conduit (72) associated with said valve is adjustable. Method according to claim 2 and / or 3, characterized in that the suction action is directed by said valve (73) or nozzle (81) having a suction position or suction. adjusting the position or direction of the suction, or adjusting the position or position of the duct (72) associated with the suction valve, or the position providing the suction. • · ♦ · «« Φ 1 • · 118 · 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 Method according to one of Claims 2 to 4, characterized in that the actuator (72, 73, 81) for blowing air to the desired position or sucking at the desired point is moved in the direction of travel of the web, for example generally the roll stack (31, 3) 3) in the center line and / or machine line direction. Method according to one of Claims 1 to 5, characterized in that the processing unit (21,22, 23) is: - a calender which may be a multi-calender or a soft calender or a belt calender or a metal belt calender, - a drying unit, in particular a paper machine drying unit; or a drying unit for a board machine, - a coating unit or a surface sizing unit, - a pressing unit. 15 An arrangement for controlling the process of treating a fibrous web (W) in a fibrous web machine, wherein the fibrous web passes through a processing unit (21,22,23) in which the fibrous web is subjected to at least one heating effect by contact, for example roll contact or cylinder contact (IR, Infrared), characterized in that, in order to control and / or control the fiber web (W) processing process, the air surrounding the fiber web is subjected to at least one operation in the processing unit, effect on humidity of the fibrous web and / or the surrounding air, where the treatment ·,. the unit (21, 22, 23) has a cooled or colder surface to condense the moisture in the air. :: i .: 25 • · · Arrangement according to Claim 7, characterized in that the processing unit (21,,,.,. 22,23) blows air towards the fibrous web (W) or draws in air from the surrounding of the fibrous web. the actuator (72, 73, 81) must be moved. • · I I I I · · t · 1 1 1 »» »» »» »» »» »118 38 38 38 38 38 118389 Arrangement according to Claim 8, characterized in that the actuator (72, 73, 81) is displaceable in the direction of travel of the web, for example generally in the direction of the center line of the roll stack (31, 33) of the processing unit (21, 22) and / or machine line. Arrangement according to Claim 9, characterized in that the position and / or position and / or the direction of the blowing / suction of the actuator (72, 73, 81), for example a valve or nozzle, is adjustable, or (72) associated with the actuator position and / or position and / or the blowing / suction position must be adjustable. 10 Arrangement according to Claim 7, characterized in that the processing unit has a medium-circulation air cooling and / or drying device and / or a moisture condensing device (15,16) for cooling and / or drying the air. An arrangement according to claim 11, characterized in that the air circulates through the cooling device and / or the drying device and / or the moisture condensing device (15, 16), and that the medium circulation is preferably the cooling water circulation. Arrangement according to one of Claims 7 to 12, characterized in that the flow of air 20 is carried out in a refrigeration and / or imaging device and / or in a condensation device of a stationary and cooled with a cooling medium. 15) through the flow passages (11), that the cooling medium flows in the flow passages (2) arranged in the partition walls (51) separating the flow passage, so that the outer surfaces of the partition walls cool and condense with moisture; distinctive condensation / condensation water • · · • · · 25 flows as a liquid into the collection medium (41). • 1 • · ·. ., 14. An arrangement according to any one of claims 7 to 13, characterized in that • · «« · «, 1 ·. the cooling device and / or the drying device and / or the moisture condensing device "· · · 1 *. (16) includes a rotary central heat exchange cell (52) provided with an e. The circulation of the cooling medium, whereby the outer surface of the heat exchanger cell and the surrounding jacket (42), e.g. a condensation surface for airborne moisture from which the condensate / condensate water is discharged, at least in part, by means of centrifugal force 5, thereby separating the separated condensate / condensate water into the collecting means (41). Arrangement according to Claim 14, characterized in that the exterior surface of the central heat exchange cell (42) is affected by a scraping means (43), for example a rubber scraper 10, which removes condensation / condensation water from the exterior surface of the heat exchange cell. Arrangement according to one of Claims 7 to 15, characterized in that the actuator (72, 73, 81) may or may not be in itself a humidifier, a steam box and / or a cleaning device having a substantial effect on the fibrous web 15 (W) and / or the humidity of the surrounding air. Arrangement according to one of Claims 7 to 16, characterized in that the position of the actuators (72, 73, 81) required to ventilate the environment of the fibrous web (W) passing through the processing unit (21,22) or the direction of blowing and / or suction generated by the actuator adjustable. • · • · · · · · · · · · * · 1 Arrangement according to Claim 17, characterized in that the blowing and / or suction system. . is adjustable by the actuator (72, 73, 81). • · · • · · «« 1 * · • · · • · * !! · 1 25 Arrangement according to Claim 18, characterized in that the blowing and / or suction • · can be targeted to a region of condensation of moisture in the air. • · · t · · ··· .2 ·. A method according to any one of claims 7 to 19, characterized in that the processing unit (21, 22, 23) is: 1 2 • · t · 1 »• A calender, which may be a multi-nip calender or a soft calender or a belt calender or a metal belt calender, - a drying unit, in particular a paper machine drying unit and / or a cardboard drying unit, 5. a coating unit or a surface sizing unit. * 1 · • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • · · · · · · · · · · · · · · · · · · · · · · · 1 • 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 «« «« «« «« «« « * «· · • · 1 • · · • 4 Jt- 1 1 8389