EP3953650A1 - Verfahren zum trocknen plattenartiger materialien und trocknungsvorrichtung - Google Patents
Verfahren zum trocknen plattenartiger materialien und trocknungsvorrichtungInfo
- Publication number
- EP3953650A1 EP3953650A1 EP20719332.7A EP20719332A EP3953650A1 EP 3953650 A1 EP3953650 A1 EP 3953650A1 EP 20719332 A EP20719332 A EP 20719332A EP 3953650 A1 EP3953650 A1 EP 3953650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying
- air
- enclosed area
- zone
- panels
- 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.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 239000004566 building material Substances 0.000 claims abstract 3
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000011505 plaster Substances 0.000 claims description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 239000011507 gypsum plaster Substances 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 10
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0082—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a rise in temperature, e.g. caused by an exothermic reaction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
- F26B2210/02—Ceramic articles or ceramic semi-finished articles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the invention relates to a method and a device for drying boards or board-like materials, in particular plasterboard.
- drying systems are mostly operated in recirculation mode.
- the drying air is brought to the plates several times and heated again after each contact.
- the air is increasingly enriched with moisture, only a small part of the drying air is released into the environment as exhaust air in order to dissipate moisture and smoke gases into the environment.
- a distinguishing feature of different types of dryer is the type of air routing over the material to be dried.
- the air can essentially be fed to the plate in the form of cross ventilation, longitudinal ventilation or so-called impingement jet ventilation.
- CONFIRMATION COPY With impact jet ventilation, the drying air is brought in from the side of the drying system in air lines, so-called nozzle boxes, and blown vertically onto the surface of the items to be dried via air outlet nozzles. From there this air flows to the opposite side of the drying system.
- the energetic efficiency of all these types of ventilation can be improved by heating fresh air with the help of a heat exchanger.
- the fresh air heated in this way is then used as combustion air or is used for pre-drying.
- DE 26 13 512 A1 discloses a two-stage drying process and a drying system.
- the object is to modify or supplement the two-stage drying process known per se so that in particular plasterboard or goods with similar properties can be dried particularly economically in terms of energy using this process.
- the heat exchanger is used to heat the circulating air of a downstream drying zone which is ventilated by impingement jets.
- a method for drying boards is known, which are guided in levels through a device divided into drying chambers, the boards in a drying device by means of impingement jet ventilation are brought into contact with the drying air and the impingement jet ventilation is ensured by means of cross-ventilated nozzle boxes.
- the drying device is a main drying stage or a final drying stage in a drying plant.
- the pre-zone exhaust air should be used to preheat the panels in the area of the dryer inlet. The energy transferred in this way would then no longer have to be made available later via the burner, which would result in a thermal advantage.
- gypsum-containing, plate-shaped materials such as plasterboard, but also gypsum fiberboard
- the curing phase usually lasts eight to twelve minutes and includes an area in front of the dryer, in which the panels have already been divided over the individual levels.
- the invention is based on the surprising finding that, contrary to expectations, panels that have not yet fully cured, i.e. are still in the last phase of the curing process, can be exposed to moderately warm drying air without this hindering complete hydration in any way.
- the method is advantageously characterized in that exhaust air from the drying pre-zone flows as drying air counter to the conveying direction of the panels in an enclosed area along the panels and is cooled in the process.
- temperature and / or humidity sensors are preferably provided.
- a slight negative pressure of 50 Pa or less, in particular 20 Pa or less, is generated in the enclosed area by means of the fan.
- the moisture content of the air in the enclosed area is preferably controlled to a value of less than 30 g, preferably 20 g or less, per kilogram of air.
- An air temperature of 35 to 60 ° C. is preferably maintained in the enclosed area.
- a device is also created which is created for multi-level dryers for drying plaster-containing panels. This is characterized in that an enclosed area is arranged upstream of the drying pre-zone, in which drying air can be applied to the panels from the drying pre-zone
- the enclosed area preferably comprises side walls and a cover on the top as well as covers on the entry side between the plates receiving floors; towards the drying pre-zone it is open to allow the drying air to flow in.
- the walls and covers can also be provided with doors or viewing windows.
- a fan can advantageously be used in the area of the pipeline, through which drying air is sucked out of the enclosed area after it has absorbed moisture from the panels there and warmed them up a little.
- the device also comprises a control or regulating device by means of which the supply of drying air into the enclosed area can be controlled or regulated by means of temperature and / or humidity sensors, the mode of operation of the enclosed area in front of the pre-zone is optimized.
- a bypass line is preferably provided for removing excess drying air from the pre-zone, which is not required in the enclosed area. In this way, the excess drying air can be discharged from the enclosed area together with the air when the bypass line is connected to the chimney.
- FIG. 1 shows an isometric view of an enclosed area in front of a pre-zone of a drying device for drying a plate-shaped material, segment plates forming the outer wall being omitted,
- FIG. 2 is a vertical sectional view of the enclosed area in FIG.
- An enclosed area 1 extends between a loading zone 20 or feed device and a pre-zone 2 of a drying device.
- the pre-zone 2 is connected to the area 1 without a transition and extends up to a front wall 3 of the pre-zone 2, so that drying air flows from the pre-zone 2 into the area 1 and heats the plates to a temperature of up to 60 ° C.
- a negative pressure and a humidity of less than 30 g of water per kilogram of air are maintained in area 1, so that the drying air absorbs moisture from the panels and the setting process in them is supported.
- the drying air is supplied via two laterally above front structures 4, 5, which are arranged on both sides of area 1.
- Moisture enriched flows from the stems 4, 5 via suction nozzles 6, 7 to a central suction pipe 8, which runs above the area 1, includes a fan 9 and merges into a chimney 10, which in turn is equipped with a filter system 11.
- a suction nozzle 12 is provided on one or both sides of the wall 3, from which a bypass line 13 leads to a flange 14 via which the bypass line 13 is connected to the suction pipe 8 so that drying air is sucked out of the pre-zone 2, if necessary.
- the area 1 has floors 15 (FIG. 3) with rollers 16.
- the wall is formed by a multiplicity of segment plates 17 (FIG. 4), which are preferably arranged so as to be pivotable in order in this way to allow easy access to the interior of the area 1 for inspection work and controls.
- segment plates 17 In the direction of the feed area for feeding the plates, sheet metal strips (not shown) are attached to the loading opening between the floors 15, which only open when the plates are passed on the floors 15 that the insertion of the plates is enabled, but the area 1 remains closed for the rest. Sealing elements are also provided on the loading opening on both sides of the plates.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Drying Of Solid Materials (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019002671.3A DE102019002671A1 (de) | 2019-04-11 | 2019-04-11 | Verfahren zum Trocknen plattenförmiger Materialien und Trocknungsvorrichtung |
PCT/EP2020/000080 WO2020207617A1 (de) | 2019-04-11 | 2020-04-05 | Verfahren zum trocknen plattenartiger materialien und trocknungsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3953650A1 true EP3953650A1 (de) | 2022-02-16 |
Family
ID=70289727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20719332.7A Pending EP3953650A1 (de) | 2019-04-11 | 2020-04-05 | Verfahren zum trocknen plattenartiger materialien und trocknungsvorrichtung |
Country Status (10)
Country | Link |
---|---|
US (1) | US20220177367A1 (de) |
EP (1) | EP3953650A1 (de) |
JP (1) | JP2022526853A (de) |
KR (1) | KR20210148339A (de) |
CN (1) | CN113710979B (de) |
BR (1) | BR112021019406A2 (de) |
CA (1) | CA3135526A1 (de) |
DE (1) | DE102019002671A1 (de) |
EA (1) | EA202192626A1 (de) |
WO (1) | WO2020207617A1 (de) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3529357A (en) * | 1968-09-20 | 1970-09-22 | Moore Dry Kiln Co | Method and apparatus for high-speed drying of gypsum board |
DE2613512A1 (de) * | 1976-03-30 | 1977-10-06 | Buettner Schilde Haas Ag | Zweistufiges trocknungsverfahren und trocknungsanlage |
DE3030272C2 (de) * | 1980-08-09 | 1982-09-16 | Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld | Anlage zum Trocknen von Furnieren |
DE3735242A1 (de) * | 1987-10-17 | 1989-04-27 | Dornier Gmbh Lindauer | Trockneranlage fuer bauplatten |
DE4326877C1 (de) * | 1993-08-11 | 1994-10-13 | Babcock Bsh Ag | Verfahren zum Trocknen von Platten und Trockner |
US5603168A (en) * | 1994-11-30 | 1997-02-18 | The Coe Manufacturing Company | Method and apparatus for controlling a dryer |
EP1205722A1 (de) * | 2000-11-08 | 2002-05-15 | Lafarge Platres | Verfahren zum trocknen von Gipskartonplatten und Vorrichtung zur Durchführung des Verfahrens |
DE10146179C1 (de) * | 2001-09-19 | 2002-10-31 | Babcock Bsh Gmbh | Anlage zum Trocknen von Gipskartonplatten |
DE102009059822B4 (de) * | 2009-12-21 | 2015-12-10 | Grenzebach Bsh Gmbh | Verfahren und Vorrichtung zum Trocknen von Gipsplatten |
EP2741037A1 (de) * | 2012-12-05 | 2014-06-11 | Saint-Gobain Placo SAS | Trockensystem |
GB2511331A (en) * | 2013-02-28 | 2014-09-03 | Dickinson Legg Ltd | Drying Apparatus |
CN103256791B (zh) * | 2013-04-18 | 2016-04-13 | 黄山市白岳活性白土有限公司 | 一种活性白土烘干*** |
US9983574B2 (en) * | 2013-09-30 | 2018-05-29 | United States Gypsum Company | Systems and methods for controlling a conveyor system during product changeovers |
KR101762151B1 (ko) * | 2015-01-05 | 2017-07-27 | (주) 토모우드 | 마이크로파를 이용한 국산 목재 건조 방법 |
CN206094826U (zh) * | 2016-08-31 | 2017-04-12 | 浙江汇德木业有限公司 | 一种用于实木板材烘干的环保型节能烘干机 |
CN108088208A (zh) * | 2018-01-24 | 2018-05-29 | 浙江企聘通网络技术有限公司 | 一种建筑墙体装饰板材石膏板加工用干燥设备 |
-
2019
- 2019-04-11 DE DE102019002671.3A patent/DE102019002671A1/de active Pending
-
2020
- 2020-04-05 BR BR112021019406A patent/BR112021019406A2/pt unknown
- 2020-04-05 EA EA202192626A patent/EA202192626A1/ru unknown
- 2020-04-05 EP EP20719332.7A patent/EP3953650A1/de active Pending
- 2020-04-05 JP JP2021560593A patent/JP2022526853A/ja active Pending
- 2020-04-05 KR KR1020217036534A patent/KR20210148339A/ko unknown
- 2020-04-05 US US17/594,219 patent/US20220177367A1/en active Pending
- 2020-04-05 WO PCT/EP2020/000080 patent/WO2020207617A1/de unknown
- 2020-04-05 CN CN202080027909.XA patent/CN113710979B/zh active Active
- 2020-04-05 CA CA3135526A patent/CA3135526A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2020207617A1 (de) | 2020-10-15 |
CN113710979A (zh) | 2021-11-26 |
CA3135526A1 (en) | 2020-10-15 |
CN113710979B (zh) | 2023-10-31 |
JP2022526853A (ja) | 2022-05-26 |
EA202192626A1 (ru) | 2022-02-08 |
DE102019002671A1 (de) | 2020-10-15 |
KR20210148339A (ko) | 2021-12-07 |
US20220177367A1 (en) | 2022-06-09 |
BR112021019406A2 (pt) | 2021-11-30 |
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