CN104246069A - Method and device for moistening a fibrous web - Google Patents
Method and device for moistening a fibrous web Download PDFInfo
- Publication number
- CN104246069A CN104246069A CN201380020543.3A CN201380020543A CN104246069A CN 104246069 A CN104246069 A CN 104246069A CN 201380020543 A CN201380020543 A CN 201380020543A CN 104246069 A CN104246069 A CN 104246069A
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- CN
- China
- Prior art keywords
- fluid
- humidifying fluid
- web
- water
- humidizer
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/008—Steam showers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G7/00—Damping devices
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Abstract
The invention relates to a method for moistening a moving fibrous web (21), in particular a paper, tissue or carton web, in which a moistening liquid (3), comprising at least one spray, is provided in a storage vessel (11), fed to an application device (18) and at least partially applied to the fibrous web (21) by means of the application device (18), wherein the moistening liquid portion (3) not applied to the fibrous web (21) is suctioned by means of a suction device (24), wherein at least one additional liquid is mixed with the moistening liquid (3).
Description
Technical field
The present invention relates to a kind of for the method and apparatus of the web of fiber, particularly paper web of motion, tissue webs and board web humidification.
Background technology
For giving the web of fiber humidification of motion, usually the humidifying fluid comprising at least injection water provided in storage container is supplied to application devices, and be applied at least in part on web of fiber by described application devices, the part not wherein being applied to the humidizer on web of fiber is extracted again by extracting device.
Due to the machine speed of raising and the requirements at the higher level for paper quality, more and more importantly by using the nozzle humidifier improved by web of fiber humidification equably, to obtain uniform humidity cross-sectional distribution.
In current nozzle humidifier, the water usually will be prepared, such as condensate water, boiler feedwater or deionized water are used as injection water.According to manufacturer, for the accurate technical specification that injection water provides, wherein different parameters is determined to the limiting value of permission, make prepared injection water more expensive compared with normal fresh water (Pipeline Water).
This type of pure water of choice for use is to avoid for the pollution of nozzle humidifier system, wearing and tearing and various types of damage.Especially the biological infestation avoiding depositing, the burn into that such as causes due to salinity causes due to mould, the wearing and tearing caused due to particulate, etc.In addition, therefore avoid dirt and arrive web of fiber in company with humidifying fluid.
The very little drop size produced by nozzle creates very thin spraying, and described spraying causes equably to web of fiber humidification.But, add humidity for what realize the hope of paper web, the humidifying fluid amount of the nozzle from nozzle humidifier must be chosen as the double amount of the necessary amount of actual humidification paper web because and not all be sprayed to and reach paper web.Certain part is left from humidification regional movement with the boundary layer of the width of motion.But remaining humidifying fluid part should not arrive in machine, therefore modern nozzle humidifier has the aspirator due to the spraying of suction residue.The part be sucked usually no longer is become waste water by using.
The temperature adjustment of crucially humidifying fluid except filtering when preparing humidifying fluid.Temperature adjustment is crucial to about 50 DEG C to 60 DEG C, to realize the optimal penetration of water in also warm paper web.But, the humidifying fluid prepared such as has the temperature of 80 to 99 DEG C when using condensate water.Therefore require to provide cooling.Using colder fluid, such as, in the situation of boiler feedwater or deionized water, then needing heating, usually by heat exchanger or the heating of electric spiral heating silk.
Summary of the invention
Technical problem to be solved by this invention is a kind of method and apparatus consumed for reducing injection water of suggestion.
This technical problem is by solving with the method for the feature of claim 1 and equipment according to claim 10.
A kind of method starting described type is herein advised according to the present invention, wherein, be provided in storage container by the humidifying fluid comprising at least one injection water, be provided to application devices and be applied at least in part on web of fiber by this application devices, the humidifying fluid part be not wherein applied on web of fiber is aspirated by pumping equipment.
For reducing humidifying fluid consumption or injection water consumption, by least one other fluid chemical field to humidifying fluid.At this, other fluid can have worse quality with regard to the mass parameter of required injection water.Such as, other liquid can be fresh water.
Preferably, at least part of of humidifying fluid of suction adds humidifying fluid to again.The humidifying fluid wherein returned can directly be mixed in storage container, in the inflow that maybe can be mixed into storage container or outflow conduit.
Humidifying fluid can be prepared condensate water, boiler feedwater or deionized water, is heated or cooled 30 DEG C to 70 DEG C, preferably 40 DEG C to 60 DEG C.Temperature is crucial for good the penetrating of humidizer in web of fiber.
In addition, the humidizer of suction can be filtered before turning back in humidizer stream.When the larger composition of the humidizer be sucked should be provided to humidifying fluid, described filtration is significant especially.The humidifying fluid of suction such as also contains fiber or other dirt particles of the web of fiber of the spray nozzle clogging likely causing application devices by suction.
In addition, advantageously at least one the humidifying fluid characteristic turning back to the humidifying fluid that the pre-test in humidifying fluid is aspirated.The returning of humidifying fluid should be adjusted to make only when the threshold value of at least one characterisitic parameter be reached, low mistake or exceed time just humidifying fluid is returned.Therefore achieve and only when the humidizer aspirated has enough quality, aspirated humidizer is returned.Otherwise, derived.
In addition, flowing into the characteristic of humidifying fluid of nozzle humidifier pre-test mixing, and the supply controlling and be adjusted in humidizer stream, the threshold value of at least one characterisitic parameter in injection water be not reached, low mistake or exceed.
Preferably, at least one of following humidizer characteristic is measured: electric conductivity, pH value and/or solids content.
In other structure, humidifying fluid can be mixed by multiple suitable injection water.Described injection water can be condensate water, boiler feedwater and/or deionized water.At this, can additionally mix other fluid, as fresh water in addition except the humidifying fluid of suction.Therefore the temperature of the humidifying fluid of mixing can be adjusted to 30 DEG C to 70 DEG C, is preferably adjusted to 40 DEG C to 60 DEG C.Therefore the temperature of humidizer regulates by mixing the medium of differently temperature adjustment or adjusts.With this, can save for the heat exchanger heated or cool ideally, maybe described heat exchanger at least can be designed to less size.
Humidification apparatus according to the web of fiber for moving with fluid humidification of the present invention comprises: with the storage container of feedway for storing and provide humidizer, can be used in the application devices be applied at least in part by humidizer on web of fiber, with the pumping equipment that can be used in aspirating the humidizer part do not arrived on web of fiber, wherein storage container has the second feedway, can be mixed at least one other fluid by described second feedway in storage container.
Second feedway can comprise filter plant, can filter other fluid by described filter plant, particularly aspirated humidifying fluid.
In addition, the other feedway for fresh water can be there is, fresh water is mixed into humidifying fluid and/or the temperature of the injection water in storage container is cooled to 30 DEG C to 70 DEG C, preferably be cooled to 40 DEG C to 60 DEG C.
In possessive construction, the second feedway can comprise measurement device and control or conditioning equipment, can be measured at least one characterisitic parameter of other fluid, at least one characterisitic parameter of particularly aspirated humidizer by it.Therefore second feedway is configured to make it be controlled or to be adjusted to, and the threshold value of at least one characterisitic parameter in humidifying fluid is not reached, low mistake or exceed.
The advantage of solution is:
● reduce operating cost by reusing injection water
● the cost of investment of water station is reduced by saving heat exchanger
● the electric energy of operating cost or heating system is reduced by saving heat exchanger media (cooling water, steam, hot water)
● reduce operating cost by the fresh water of cheapness being mixed into water that is more expensive, that prepare when keeping water quality
Accompanying drawing explanation
Other characteristic sum additional advantage of the present invention according to method of the present invention or equipment obtains from the following preferred embodiment by reference to Fig. 1 describes.
Fig. 1 shows the embodiment according to humidification apparatus of the present invention.
Detailed description of the invention
As known from the prior art, humidification apparatus 18 consists essentially of atomizer 15 and pumping equipment 24.By atomizer 15, humidifying fluid 3 is atomized, make web of fiber 21 to be humidified also under high amplitude velocity degree by humidification.Due to the convolution of the web of fiber of motion, the remaining humidifying fluid part do not arrived on web of fiber is sucked by means of pumping equipment 24.
For the water of the preparation provided in storage container 11 can be used as humidifying fluid 3 by humidification.Such as by pump 3, humidifying fluid 3 is transported under stress the atomizer 15 of nozzle humidifier 18 from storage container 11.The remainder of the humidifying fluid occurred by being atomized to be sucked by separator 16 by means of suction ventilator 17 and to be separated.
Storage container 11 comprises at least two flow ipes, namely for flow ipe 1 and the flow ipe 2 belonging to the second feedway of fresh humidifying fluid, can be mixed at least one other fluid by described flow ipe in storage container 11.
For humidification is used in the water of the preparation provided in storage container.From described storage container, the water of preparation is transported under stress the atomizer 15 of nozzle humidifier, described atomizer 15 creates thin spraying 23.Because and not all spraying is received by web of fiber, so need remaining spraying suction.
Second feedway comprises at least one measuring system 8, pump 19, filter 20 and control valve 5.Measuring system 8 is connected with adjuster 13, and described adjuster 13 have adjusted again control valve 15, thus the humidifying fluid of adjustable suction is to the influx in storage container 11.
The quality of the humidifying fluid of suction is checked by automatic measurement system 8.Such as can check electric conductivity, pH value and/or solids content.At this, this measurement can regulate the mixed volume of the humidifying fluid aspirated according to the parameter that should meet according to the technical specification of humidifying fluid.
In unshowned structure in addition, the humidifying fluid of suction can be supplied to again central condensate water collecting container or the condensate water collecting pipeline of paper machine, and described pipeline leads to the preparation device (such as, in power plant) of condensate water.
In addition, can be this structure and supplement other pipeline for being mixed into from fresh water to humidifying fluid 3.Mixed proportion at random can be selected at this, but preferably in the scope of 1:10 to 10:1.
By the quality of the fresh water of automatic measurement system inspection supply.At this, this measures and can be used for regulating, and therefore only supply meets the fresh water amount of the parameter of the technical specification of the humidifying fluid for nozzle humidifier.
Two measuring systems can advantageously be interconnected, and make two mass measurements for regulating, only to provide the fresh water amount of the parameter of the technical specification of the humidifying fluid met for nozzle humidifier for mixing.
In other structure, automatic measurement system 8 can check the quality of the humidifying fluid led in the flow ipe 4 of nozzle humidifier.Can such as measure electric conductivity, pH value and/or solids content.At this, this measures the parameter that can be used for according to the technical specification of the humidifying fluid that should meet and regulates the combined amount of the humidifying fluid only aspirated and/or the supply of fresh water.
Alternatively, the interim nonautomatic water analysis of water that also can use water to be mixed or be supplied to nozzle humidifier is for regulating mixed proportion.
Usually there is at this injection water prepared being condensate water the temperature of 80 DEG C to 99 DEG C, and be necessary for and be cooled to usually 40 DEG C to 60 DEG C as injection water.Correspondingly, the injection water of preparation, has low temperature as boiler feedwater or deionized water and must by heat exchanger by hot water or Steam Heating or electrical heating.
The adjustment of injection temperation is when heat setting bears water advantageous by being mixed into cold water, and such as boiler feedwater or deionized water and/or fresh water carry out.
By automatic temperature-adjusting measuring system, the temperature of the humidifying fluid in the flow ipe of nozzle humidifier is led in inspection.At this, this measures the amount that can be used for regulating the cold water be mixed into according to the injection temperation that should meet.
Reference list
1 condensate water flows into
2 other fluid inflows
3 humidifying fluids
4 for the connecting pipe of application devices
5 control valves
6 control valves
7-9 measuring system
10 heat exchangers
11 storage containers/collection container
12 cooling waters flow into
13 regulate circulation
14 control valves
15 atomizers
16 separators
17 suction ventilator
18 application devices
19 hair-dryers
20 filters
21 web of fibers
22 atomizing airs
23 humidifying fluid mists
24 pumping equipments
The humidifying fluid of 25 suctions
Claims (14)
1. the method for web of fiber (21), the particularly paper web to motion, tissue webs or board web humidification, wherein, comprise the humidifying fluid of at least one injection water (11) in storage container to prepare, be provided to application devices (18) and be applied on web of fiber (21) at least in part by application devices (18), wherein, by pumping equipment (24) suction not by humidifying fluid part (3) that web of fiber is taken away, it is characterized in that, at least one other fluid is mixed into described humidifying fluid (3).
2. method according to claim 1, is characterized in that, at least one the other fluid with the quality lower than injection water is mixed into humidifying fluid (3).
3. method according to claim 2, is characterized in that, the humidifying fluid aspirated by pumping equipment (25) is mixed into humidifying fluid (3) at least partially.
4. method according to claim 2, is characterized in that, fresh water is mixed into humidifying fluid.
5. method according to claim 1, is characterized in that, injection water is condensate water, boiler feedwater or deionized water.
6. method according to claim 3, is characterized in that, the humidifying fluid (25) aspirated was filtered before turning back in humidizer stream.
7. according to the method in claims 1 to 3 described in, it is characterized in that, at least one characteristic of humidifying fluid (25) described in the pre-test in humidizer stream is turned back at the humidifying fluid (25) of suction, and control or regulate to the supply in humidizer stream, the threshold value of at least one characterisitic parameter in injection water is not reached, low mistake or exceed.
8. according to the method in claims 1 to 3 or 7 described in, it is characterized in that, measure at least one characteristic of the humidifying fluid (25) of the mixing in the flow ipe leading to nozzle humidifier, and control or regulate to the supply in humidizer stream, the threshold value of at least one characterisitic parameter in injection water is not reached, low mistake or exceed.
9. method according to claim 4, is characterized in that, measures following characteristic at least one:
-electric conductivity
-pH value
-solids content
10. method according to claim 5, is characterized in that, measures the temperature of humidifying fluid (3), and by being mixed into fresh water and described temperature being controlled or be adjusted to 30 DEG C to 70 DEG C, preferably 40 DEG C to 60 DEG C.
11. 1 kinds for the web of fiber (21) to motion, particularly paper web, the humidification apparatus of tissue webs or board web humidification, described humidification apparatus comprises: with the storage container (11) of feedway for storing and provide humidifying fluid (3), can be used in the application devices (18) be applied at least in part by humidifying fluid (3) on web of fiber, the pumping equipment (24) not arriving humidizer part on web of fiber (21) is aspirated with can be used in, it is characterized in that, storage container (11) has the second feedway (2), in storage container, (11) at least one other fluid can be mixed into by described second feedway (2).
12. humidification apparatus according to claim 11, is characterized in that, the second feedway (2) comprises filter apparatus (20), can filter other fluid by described filter apparatus, particularly aspirated humidizer.
13. humidification apparatus according to claim 12, it is characterized in that, be provided for the other feedway of fresh water, fresh water is mixed into humidizer and/or the temperature of the injection water in storage container is cooled to 30 DEG C to 70 DEG C, be preferably cooled to 40 DEG C to 60 DEG C.
14. according to claim 11 to the humidification apparatus in 13 described in, it is characterized in that, second feedway (2) comprises measurement device (9) and controls or conditioning equipment (13), at least one characterisitic parameter of other fluid can be measured by them, at least one characterisitic parameter of particularly aspirated humidizer, and can control or regulate the second feedway (2) be, such that the threshold value of at least one characterisitic parameter in humidifying fluid (3) is not reached, low mistake or exceed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012206259.9 | 2012-04-17 | ||
| DE102012206259 | 2012-04-17 | ||
| PCT/EP2013/056355 WO2013156275A1 (en) | 2012-04-17 | 2013-03-26 | Method and device for moistening a fibrous web |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104246069A true CN104246069A (en) | 2014-12-24 |
Family
ID=48092917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380020543.3A Pending CN104246069A (en) | 2012-04-17 | 2013-03-26 | Method and device for moistening a fibrous web |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2839075A1 (en) |
| CN (1) | CN104246069A (en) |
| WO (1) | WO2013156275A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8858213B2 (en) | 2013-02-22 | 2014-10-14 | The Procter & Gamble Company | Equipment and processes for the application of atomized fluid to a web substrate |
| US10060062B2 (en) | 2013-02-22 | 2018-08-28 | The Procter & Gamble Company | Equipment and processes for the application of atomized fluid to a web substrate |
| CN103938483B (en) * | 2014-05-09 | 2016-06-29 | 浙江汉普新材料技术有限公司 | A kind of paper humidifying equipment on paper machine |
| CN104153238B (en) * | 2014-08-07 | 2016-01-27 | 浙江汉普新材料技术有限公司 | A kind of diffusivity paper humidifying equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048571A (en) * | 1989-07-05 | 1991-01-16 | 青州铝箔纸总厂 | A kind of moisture regain method and apparatus of vacuum aluminium-plated paper |
| WO1999013158A1 (en) * | 1997-09-09 | 1999-03-18 | Runtech Systems Oy | Method and apparatus for application of a treatment agent to a material web |
| CN1290812A (en) * | 1999-06-29 | 2001-04-11 | 鲍德温格拉弗泰克有限公司 | Liquid supply device |
| CN1668382A (en) * | 2002-07-31 | 2005-09-14 | 曼泰克株式会社 | Liquid spray unit, method for spraying liquid using it, and chemical |
| US20080029234A1 (en) * | 2004-07-30 | 2008-02-07 | Metso Automation Oy | Method Of Moistening Paper Web And Paper Web Moistening Device |
| CN101495241A (en) * | 2006-06-16 | 2009-07-29 | 曼泰克株式会社 | Nozzle device, method of imparting chemical using it, and chemical |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI116912B (en) * | 2004-07-30 | 2006-03-31 | Metso Paper Inc | Method for wetting a paper web and the paper web wetting apparatus |
-
2013
- 2013-03-26 CN CN201380020543.3A patent/CN104246069A/en active Pending
- 2013-03-26 WO PCT/EP2013/056355 patent/WO2013156275A1/en active Application Filing
- 2013-03-26 EP EP13715920.8A patent/EP2839075A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048571A (en) * | 1989-07-05 | 1991-01-16 | 青州铝箔纸总厂 | A kind of moisture regain method and apparatus of vacuum aluminium-plated paper |
| WO1999013158A1 (en) * | 1997-09-09 | 1999-03-18 | Runtech Systems Oy | Method and apparatus for application of a treatment agent to a material web |
| CN1290812A (en) * | 1999-06-29 | 2001-04-11 | 鲍德温格拉弗泰克有限公司 | Liquid supply device |
| CN1668382A (en) * | 2002-07-31 | 2005-09-14 | 曼泰克株式会社 | Liquid spray unit, method for spraying liquid using it, and chemical |
| US20080029234A1 (en) * | 2004-07-30 | 2008-02-07 | Metso Automation Oy | Method Of Moistening Paper Web And Paper Web Moistening Device |
| CN101495241A (en) * | 2006-06-16 | 2009-07-29 | 曼泰克株式会社 | Nozzle device, method of imparting chemical using it, and chemical |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013156275A1 (en) | 2013-10-24 |
| EP2839075A1 (en) | 2015-02-25 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |