WO2009092485A1 - Train de séchage - Google Patents

Train de séchage Download PDF

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Publication number
WO2009092485A1
WO2009092485A1 PCT/EP2008/066871 EP2008066871W WO2009092485A1 WO 2009092485 A1 WO2009092485 A1 WO 2009092485A1 EP 2008066871 W EP2008066871 W EP 2008066871W WO 2009092485 A1 WO2009092485 A1 WO 2009092485A1
Authority
WO
WIPO (PCT)
Prior art keywords
drying
group
last
section according
web
Prior art date
Application number
PCT/EP2008/066871
Other languages
German (de)
English (en)
Inventor
Stephan Hampe
Erich Rollenitz
Peter Luegmaier
Alexander Studentschnig
Harald Meysel
Herbert Boden
Guido Klaunzer
Original Assignee
Voith 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
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Priority to CN2008801254629A priority Critical patent/CN101925703B/zh
Priority to EP08871429.0A priority patent/EP2240640B1/fr
Publication of WO2009092485A1 publication Critical patent/WO2009092485A1/fr

Links

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
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine

Definitions

  • the invention relates to a drying section for drying a paper, cardboard or other fibrous web in a machine for producing the same with at least two drying groups, in which the fibrous web supported by an endless rotating drying belt, alternately heated over, in a row juxtaposed drying cylinder and Guiding rollers is guided, wherein the dry belt presses the fibrous web against the lateral surface of the drying cylinder and in the drying groups in each case only a certain side of the fibrous web comes into contact with the drying cylinders.
  • the object of the invention is therefore to reduce the curl of the fibrous web with good web guide or completely eliminate.
  • the object has been achieved in that in the last drying group, the upper side of the fibrous web and in all preceding dry groups, the underside of the fibrous web with the heatedmelzyl by coming into contact and the drying cylinder row of the last drying group in the web running direction is inclined downwards, and at the end of the last drying group, a transfer device for transferring the fibrous web is provided in the next machine section.
  • a transfer device for transferring the fibrous web in the next machine section such as a coating unit or a winding arranged ,
  • the web guide is thereby improved.
  • the web remnants and dirt are led away by the drying belt of the drying cylinders, so that they are no longer performed between the drying belt and drying cylinder.
  • the dryer section according to the invention is particularly advantageous at paper machine speeds at the winding station of more than 1000 m / min, in particular of more than 1200 m / min and preferably of more than 1300 m / min and at basis weights from 40 g / m 2 or up to 180 g / m 2 , in particular between 50 g / m 2 and 180 g / m 2 , preferably between 50 g / m 2 and 130 g / m 2 .
  • the removal similar to a conveyor belt can be further improved by the fact that the common web run of dry belt and fibrous web in the last drying group is in each case from one of the drying cylinder to the following guide roll of this drying group horizontal.
  • the common web run of dry belt and fibrous web in the last drying group in each case inclined from one of the drying cylinder to the following guide roller of this drying group to the horizontal, in particular also inclined downwards.
  • the angle of inclination may be in the range of 90 °, preferably in the range of less than 50 °.
  • the common web run of dry belt and fibrous web in the last drying group from one of the drying cylinder to the following guide roll this drying group to the horizontal in the range of up to 90 °, preferably up to 50 ° be inclined above.
  • drying cylinder row of the last drying group in the web running direction in the range of -20 ° to + 30 ° to the vertical, in particular runs vertically.
  • the web remnants and contaminants should be conveyed away from the drying cylinder by the drying belt to the respective lower area of the drying belt. This can then be done to the extent that the web residues and dirt fall into the machine cellar, where they are collected by a arranged at the end of the dryer section in the machine cell catcher.
  • the collecting device may for example be a pulper.
  • the drying cylinders should preferably be arranged above the machine cellar.
  • the fibrous web is constantly supported in the entire dryer section by a belt and / or a roller and / or a cylinder.
  • the web guide is also in the upstream or downstream machine sections without free train, that is constantly supported executed.
  • a transfer device which is suitable for conveying the fibrous web or the transfer strip from the lower region of the last drying group to the next, usually higher, machine section.
  • a narrow transfer strip with a cutting device is preferably cut out of the width of the fibrous web and transferred by means of the transfer device.
  • the transfer device may comprise a combination of a blowing device with cable guide and / or at least one vacuum belt and / or louvers.
  • the transfer device can be made rope-free for reliable transfer, for example by means of several vacuum belts arranged one behind the other.
  • Reliable transfer also sets the safe removal of the fibrous web or transfer strip from the preceding belt or roll surface ahead.
  • the removal device can be equipped, for example, with a suction device and / or with blower tubes, which detach the transfer strip from the donor surface and thus initiate the transfer and guide the transfer strip to the transfer device.
  • a cutting device in the region of the last evacuated guide roll of the last drying group (9) and / or before the penultimate drying group in the range z.
  • the fibrous web is in contact with the drying cylinder surface.
  • the cutting device can preferably be designed as a water jet cutting device.
  • the transfer strip is cut before the last or penultimate dryer group, it is advantageous if at least the evacuated guide rolls of the last drying group have evacuated edge suction zones on at least one side for transferring the transfer strip.
  • Another advantage with respect to the web guide is when the transfer region between the penultimate and last drying group is formed so that the directional vector of the fibrous web or the transfer strip immediately after their transfer at the transfer point from the dry belt of the penultimate drying group on the dry belt of the last drying group Component in the machine direction has. As a result, possibly occurring web remnants are transported in the machine direction and passed through the last drying group to the pulper or machine cellar. Thus, no disturbing web remains in the dryer group back.
  • the travel direction vector has an angle to the vertical in the range of greater than 0 ° and less than 180 °, preferably greater than 10 ° and less than 90 °. It is also advantageous if the common web run of dry belt and fibrous web in the last drying group between the transfer point and the following first guide roller of this drying group to the horizontal in the range up to 30 °, preferably 0 ° up and up to 90 °, preferably 30 ° is inclined downwards.
  • the last drying group is combined with a further drying device.
  • a further drying device This can be for example an impingement air dryer or radiation dryer.
  • the dryer section according to the invention can be arranged in a pre-drying section and / or in a downstream dryer section of a paper machine.
  • the drying section can be arranged immediately before a smoothing and / or an applicator device of a paper machine.
  • the applicator may be a glue applicator or a coating applicator.
  • a curl correction of the fibrous web can be carried out by the last drying group. It is also possible to pre-compensate for the influence of the application aggregate on the curl.
  • the dryer section according to the invention can be coordinated in its effect on the influence of the subsequent machine section. This can be z. B. done on the adjustment of the drying temperature of the drying cylinder in the last drying group.
  • the vapor pressure of the drying cylinders of the last drying group is higher than in at least one of the preceding drying groups. So it is advantageous if the differential pressure between the last and penultimate drying group is between 2 to 8 bar.
  • the vapor pressure of the drying cylinders of the last drying group is in particular greater than 10 bar, preferably greater than 12 bar, and in particular greater than 12.5 bar.
  • at least one high-performance dry cylinder can also be used in the last drying group. This is characterized in that the coming into contact with the fibrous web cylinder surface has a temperature of about 120 0 C. This leads to a high heat flux density.
  • the heat flow density should be greater than 25 kW / m 2, in particular greater than 38 kW / m 2 and preferably greater than 42 kW / m 2 .
  • the last drying group comprises at least 2 drying cylinders, in particular for drying cylinder diameters of less than or equal to 2500 mm, in particular less than or equal to 1800 mm and very particularly for diameters of less than or equal to 1500 mm.
  • the diameter of at least one drying cylinder of the last drying group is greater than 1000 mm, preferably equal to or greater than 1800 mm. Especially for large diameters greater than 1800 mm, in particular greater than 2500 mm, only 1 drying cylinder can be provided.
  • an additional drying device is provided in the region of the common web run of dry belt and fibrous web in the last drying group between the transfer point and the following first guide roll of this dryer group.
  • This can be an impingement air dryer.
  • a stabilizing device for stabilizing the web run can be provided in the area of the common web run of the dry belt and fibrous web in the last drying group between the transfer point and the following first guide roll of this drying group.
  • the stabilization device can be realized by a circulating belt which covers the fibrous web in this area.
  • baffle in the penultimate dryer group.
  • the baffle is arranged so that the web residues are passed into the pulper, in the machine cellar or on a transport device for removal.
  • At least one additional device is provided for correcting the curl of the fibrous web.
  • a device may be a moistening device, such as a nozzle moistener, steam humidifier, etc., or even an impingement air device. These are preferably sectioned over the width adjustable.
  • a further embodiment variant is characterized in that the last drying group is arranged outside the hood of the dryer section. This is made possible by the fact that the drying rate at the end of the dryer section is low and the main purpose is the curl control. In this variant, the accessibility for maintenance and service work is improved. Likewise, the burdens of the staff are eliminated by high temperatures as they occur in the hood. The web run can be easily viewed and observed.
  • the dryer section according to the invention can be advantageously used for the production of copy papers or packaging papers, in particular at higher basis weights from 40 g / m 2 or up to 180 g / m 2 , in particular between 50 g / m 2 and 180 g / m 2 , preferably between 50 g / m 2 and 130 g / m 2 .
  • mastering the web remnants in the event of web breaks poses a particular challenge.
  • FIG. 1 shows a schematic cross section through the end of the dryer section with the last three drying groups 7, 8, 9.
  • FIG. 2 shows a vertical arrangement of the last drying group.
  • FIG. 3 is an enlarged view of the transfer area at the end of the last dryer group.
  • FIG. 4 shows possible arrangements of the dryer section according to the invention within a paper machine.
  • all drying groups 7, 8, 9 of the drying section are formed by a row of heated drying cylinders 3 arranged next to one another, with an evacuated guide roller 4 between each two drying cylinders 3.
  • the fibrous web 1 of a continuous circulating dry belt 2 in the form of an air-permeable dryer fabric of the respective dryer group 7, 8, 9 meandering, alternately guided over the drying cylinder 3 and the guide rollers 4.
  • the dry belt 2 presses the fibrous web 1 against the hot surface of the drying cylinder 3 and thus improves the heat transfer to the fibrous web.
  • the fibrous web 1 is outside, which is why the guide roller 4 is sucked.
  • the negative pressure of the guide roller 4 sucks the fibrous web 1 to the drying belt 2.
  • the guide rollers 4 have a perforated roll shell whose interior is connected to a vacuum source.
  • drying cylinders 3 of the last drying group 9 are above the fibrous web 1, which leads to the contact of the upper side of the fibrous web 1 with the hot jacket surface of these drying cylinders 3.
  • the drying cylinder row of the last drying group 9 runs in the web running direction 12 downwards.
  • the inclination angle in this example is +30 ° to the vertical.
  • the web residue can then fall into the machine cell 5 or also onto the next section of this drying group 9, in which the fibrous web 1 runs from the drying cylinder 3 to the guide roller 4.
  • the fibrous web 1 extends approximately horizontally with the support belt 2 in the last drying group from the drying cylinder 3 to the following guide roller 4.
  • a collecting device 6, z At the end of the dryer section is located in the machine cell 5 a collecting device 6, z.
  • a pulper for receiving the discharged from the last drying group 9 soils, web residues, etc.
  • the drying cylinder row of the penultimate drying group 8 is inclined in the web running direction 12 upwards.
  • the preceding drying groups 7 are horizontal.
  • the fibrous web 1 is constantly supported by a cylinder 3, a roller 4 or a belt 2, which makes the web guide very safe even at high machine speeds.
  • the fibrous web 1 is guided to a reeling station 10.
  • FIG. 2 shows a variant of FIG. An essential difference is the vertical arrangement of the last drying group 9. It is advantageous if the drying cylinder row of the last drying group 9 in the web running direction in the range of -20 ° to + 30 ° to the vertical, in particular as shown, is perpendicular.
  • the drying section with all groups is arranged inside a hood 21.
  • a transfer device 13 for transferring the fibrous web in the next machine section 10, such as to a coating unit or to a winding 10, respectively.
  • the web guide is thereby improved.
  • the transfer device 13 is designed here as a vacuum belt.
  • the common web run of dry belt and fibrous web 1 in the last drying group 9 each inclined from one of the drying cylinder 3 to the following guide roller 4 of this drying group to the horizontal, in particular also inclined downwards.
  • the angle of inclination "c" may be in the range of 90 °, preferably in the range of less than 50 °.
  • the common web of dry belt and fibrous web in the last drying group 9 can be inclined from one of the drying cylinder 3 to the following guide roller 4 of this drying group 9 to the horizontal upwards.
  • the angle of inclination "c" may then preferably be in the range of up to 90 °, preferably up to 50 ° upwards.
  • FIG. 2 and FIG. 3 show a transfer device 13 which is suitable for removing the fibrous web 1 or the transfer strip from the lower region of the last drying group 9 and for conveying it to the next, usually higher, machine section.
  • a narrow transfer strip with a cutting device 14, 15 is preferably cut out of the width of the fibrous web and transferred by means of the transfer device.
  • the transfer device 13 may comprise a combination of a blowing device with cable guide and / or at least one vacuum belt and / or louvers. Particularly at high speeds, the transfer device can be made rope-free for reliable transfer.
  • a vacuum belt 13 removes the transfer strip 1 from the guide roller 23 and transports it to the guide roller 24. From there, it can be continued with known cable guides or air guide elements.
  • the cutting device 14 is arranged in the region of the last evacuated guide roller 4.
  • the fibrous web is on the dry belt 2 during the cutting process. This position is advantageous because of the proximity to the transfer device 13 and the pulper 6.
  • a further embodiment is the arrangement of the cutting device 15 in the region of the last drying cylinder of the drying group 7 before the penultimate drying group 8.
  • the fibrous web lies directly on the surface of the drying cylinder 3.
  • the cutting devices are configured by way of example as a water jet cutting device. The residual web is driven into the pulper during the transfer.
  • Reliable transfer also requires the safe removal of the fibrous web 1 or the transfer strip from the preceding belt or roll surface 2, 23.
  • Figures 2 and 3 the situation is shown after the transfer.
  • the fibrous web or the transfer strip is already tightened again between the drying cylinder 3 and the guide roller 24 and transferred to the next machine section, not shown.
  • the removal device can be equipped at the beginning of the transfer device 13 with, for example, a suction device and / or with blower tubes, which detach the transfer strip from the surface and thus initiate the transfer.
  • the decrease of the transfer strip and / or the fibrous web 1 or the residual web can be effected or supported by the suction and / or blowing device 25.
  • the transfer strip and / or the fibrous web 1 or the residual web can be detached from the drying belt 2 with the help of blowing air and directed to the transfer device 13 or to the pulper 6.
  • Another advantage in terms of web guide is when the transfer area between the penultimate and last drying group is formed so that the direction of travel vector 19 of the fibrous web 1 or the transfer strip immediately after their transfer at the transfer point 20 from the dry belt 2 of the penultimate drying group 8 on the Drying belt 2 of the last drying group 9 has a component in the machine direction. As a result, any resulting web remnants are transported in the machine direction 22 and passed through the last drying group 9 to the pulper 6 or machine cell 5. Thus, no disturbing web remains in the dryer group back.
  • the travel direction vector 19 has an angle "a" to the vertical in the range of greater than 0 ° and less than 180 °, preferably greater than 10 ° and less than 90 °.
  • an additional drying device 18 is provided in the area of the common web run of dry belt 2 and fibrous web 1 in the last drying group 9 between the transfer point 20 and the following first guide roller 4 of this drying group.
  • This may be an impingement air dryer 18.
  • a stabilizing device 17 for stabilizing the web run is provided in the region of the common web run of dry belt 2 and fibrous web 1 in the last drying group 9 between the transfer point 20 and the following first guide roll of this drying group.
  • the stabilizing device 17 is realized in the present example by a circulating belt covering the fibrous web 1 in this area.
  • baffle 16 in the region of the last drying group 9 and / or in the area of the penultimate drying group 8.
  • the baffle is arranged so that the web residues are passed into the pulper 6, in the machine cell 5 and / or on a transport device for removal.
  • FIG. 4 shows a paper machine with former 27 and press section 28 with a subsequent dryer section divided into a pre-dryer section 32 and a reel 10.
  • a smoothing device 30 Between the pre-dryer section 32 and a post-dryer section 32 is a smoothing device 30 and an application device 31 for application arranged by glue and / or coating color.
  • the dryer section according to the invention can be used both in the pre-dryer 29 and in the after-dryer section 32.
  • the arrangement in the pre-drying section 29 has the advantage that the influence of the particular single-sided application on the curl of the fibrous web 1 can be at least partially compensated.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

L'invention concerne un train de séchage pour le séchage d’une bande (1) de papier, de carton ou autre matière fibreuse dans une machine de fabrication de cette bande, avec au moins deux groupes de séchage (7, 8, 9) dans lesquels la bande de matière fibreuse (1), soutenue par une bande de séchage (2) circulant sans fin, est dirigée alternativement sur des rouleaux de guidage (4) et des cylindres de séchage (3), chauffés et juxtaposés en une rangée. La bande de séchage (2) presse la bande de matière fibreuse (1) contre la surface d'enveloppe des cylindres de séchage (3) et, dans les groupes de séchage (7, 8, 9), seul un côté donné de la bande de matière fibreuse (1) entre respectivement en contact avec les cylindres de séchage (3). L’invention veut diminuer la tendance au gondolage de la bande de matière fibreuse (1), en améliorant le guidage de la bande. A cet effet, c’est le côté supérieur de la bande de matière fibreuse (1) qui entre en contact avec les cylindres de séchage chauffés (3) dans le dernier groupe de séchage (9), et le côté inférieur de la bande de matière fibreuse (1) dans tous les groupes de séchage (7, 8) qui se trouvent devant, et la rangée de cylindres de séchage du dernier groupe de séchage (9) s'étend en inclinaison vers le bas dans la direction d'avancement (12) de la bande.
PCT/EP2008/066871 2008-01-23 2008-12-05 Train de séchage WO2009092485A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008801254629A CN101925703B (zh) 2008-01-23 2008-12-05 干燥部
EP08871429.0A EP2240640B1 (fr) 2008-01-23 2008-12-05 Train de séchage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008000133.3 2008-01-23
DE102008000133A DE102008000133A1 (de) 2008-01-23 2008-01-23 Trockenpartie

Publications (1)

Publication Number Publication Date
WO2009092485A1 true WO2009092485A1 (fr) 2009-07-30

Family

ID=40578707

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/066871 WO2009092485A1 (fr) 2008-01-23 2008-12-05 Train de séchage

Country Status (4)

Country Link
EP (1) EP2240640B1 (fr)
CN (1) CN101925703B (fr)
DE (1) DE102008000133A1 (fr)
WO (1) WO2009092485A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054751A1 (fr) 2009-11-05 2011-05-12 Voith Patent Gmbh Dispositif de fabrication d'une bande de matériau

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE535179C2 (sv) * 2010-07-14 2012-05-08 Andritz Tech & Asset Man Gmbh Sätt att torka en massabana och anordning för torkning av en sådan bana
DE102011087094A1 (de) 2011-11-25 2013-05-29 Voith Patent Gmbh Verfahren zur Überführung einer Materialbahn von einer Trockenanordnung zu einer nachgeordneten Funktionseinheit und Trockenvorrichtung
DE102011087095A1 (de) 2011-11-25 2013-05-29 Voith Patent Gmbh Verfahren zur Überführung einer Materialbahn von einer Trockenanordnung zu einer nachgeordneten Funktionseinheit und Trockenvorrichtung
EP2722438A1 (fr) * 2012-10-18 2014-04-23 Metso Paper Inc. Procédé et dispositif de séchage d'une bande de matière fibreuse
EP3165673B1 (fr) * 2015-11-09 2018-06-27 Valmet Technologies Oy Ligne de fabrication de bandes de fibres
DE102016125172A1 (de) * 2016-12-21 2018-06-21 Voith Patent Gmbh Verfahren zum Betrieb eines Heizgruppenteilsystems und Heizgruppenteilsystem
DE102018119383A1 (de) * 2018-08-09 2020-02-13 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Wellpappenrohpapierbahn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383744A2 (fr) * 1989-02-17 1990-08-22 Valmet Paper Machinery Inc. Sécheur à plusieurs cylindres pour machine à papier avec support pour la bande de papier
DE9017390U1 (de) * 1990-12-22 1991-03-28 J.M. Voith Gmbh, 7920 Heidenheim Trockenpartie
US5600897A (en) * 1993-08-06 1997-02-11 J.M. Voith Gmbh Mixed dryer section including single-tier and double-tier drying groups with automatic ropeless threading
WO1998027273A1 (fr) * 1996-12-03 1998-06-25 Valmet Corporation Procede de sechage et du papier et section seche d'une machine a papier
EP1245729A1 (fr) * 2001-03-26 2002-10-02 Voith Paper Patent GmbH Procédé et dispositif de transfert d'une bande de papier
EP1300510A2 (fr) * 2001-10-08 2003-04-09 Voith Paper Patent GmbH Systéme de guidage de bande

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Publication number Priority date Publication date Assignee Title
FI112266B (fi) * 1997-04-11 2003-11-14 Metso Paper Inc Keraamipinnoitteinen puristintela vaikeisiin korroosio-olosuhteisiin, menetelmä telan valmistamiseksi ja pinnoitekoostumus
US6425981B1 (en) * 1999-12-16 2002-07-30 Metso Paper Karlstad Aktiebolg (Ab) Apparatus and associated method for drying a wet web of paper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383744A2 (fr) * 1989-02-17 1990-08-22 Valmet Paper Machinery Inc. Sécheur à plusieurs cylindres pour machine à papier avec support pour la bande de papier
DE9017390U1 (de) * 1990-12-22 1991-03-28 J.M. Voith Gmbh, 7920 Heidenheim Trockenpartie
US5600897A (en) * 1993-08-06 1997-02-11 J.M. Voith Gmbh Mixed dryer section including single-tier and double-tier drying groups with automatic ropeless threading
WO1998027273A1 (fr) * 1996-12-03 1998-06-25 Valmet Corporation Procede de sechage et du papier et section seche d'une machine a papier
EP1245729A1 (fr) * 2001-03-26 2002-10-02 Voith Paper Patent GmbH Procédé et dispositif de transfert d'une bande de papier
EP1300510A2 (fr) * 2001-10-08 2003-04-09 Voith Paper Patent GmbH Systéme de guidage de bande

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054751A1 (fr) 2009-11-05 2011-05-12 Voith Patent Gmbh Dispositif de fabrication d'une bande de matériau
DE102009046425A1 (de) 2009-11-05 2011-05-12 Voith Patent Gmbh Vorrichtung zur Herstellung einer Materialbahn

Also Published As

Publication number Publication date
EP2240640A1 (fr) 2010-10-20
DE102008000133A1 (de) 2009-07-30
CN101925703A (zh) 2010-12-22
CN101925703B (zh) 2012-08-22
EP2240640B1 (fr) 2017-07-12

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