EP2257751B1 - Trockner für trocknungsgut - Google Patents

Trockner für trocknungsgut Download PDF

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Publication number
EP2257751B1
EP2257751B1 EP09723198A EP09723198A EP2257751B1 EP 2257751 B1 EP2257751 B1 EP 2257751B1 EP 09723198 A EP09723198 A EP 09723198A EP 09723198 A EP09723198 A EP 09723198A EP 2257751 B1 EP2257751 B1 EP 2257751B1
Authority
EP
European Patent Office
Prior art keywords
drying
dryer
opening
cooling
air duct
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.)
Active
Application number
EP09723198A
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German (de)
English (en)
French (fr)
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EP2257751A1 (de
Inventor
Franz Anibas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Binder and Co AG
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Binder and Co AG
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 Binder and Co AG filed Critical Binder and Co AG
Priority to PL09723198T priority Critical patent/PL2257751T3/pl
Publication of EP2257751A1 publication Critical patent/EP2257751A1/de
Application granted granted Critical
Publication of EP2257751B1 publication Critical patent/EP2257751B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F26B3/06—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 flowing through the materials or objects to be dried
    • F26B3/08—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 flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F26B3/092—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 flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
    • F26B3/0923—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 flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/26—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating conveyors propelling materials over stationary surfaces; with movement performed by reciprocating or oscillating shelves, sieves, or trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/10—Floors, roofs, or bottoms; False bottoms

Definitions

  • the invention relates to a dryer for Trocknungsgut with a feed point for the Trock Vietnamesesgut, a drying area, and a delivery point for the Trock Vietnamesesgut, wherein a supply air duct for the supply of a drying gas, preferably drying air, is provided to the drying area, and at least one exhaust port for the discharge of the drying gas after passing through the drying area, wherein the supply air duct is at least partially surrounded by an outer wall having at least one supply opening for the supply of a cooling medium and at least one discharge opening for the cooling medium is provided, and between the at least one supply opening and the at least one discharge opening a flow path for the cooling medium between the outer wall and the supply air duct is formed, according to the preamble of claim 1.
  • a supply air duct for the supply of a drying gas preferably drying air
  • the supply air duct is at least partially surrounded by an outer wall having at least one supply opening for the supply of a cooling medium and at least one discharge opening for the cooling medium is provided, and between the at least one supply
  • Dryers of this type are used, for example, in the minerals industry, where drying material is dried by hot drying air at temperatures of several hundred degrees.
  • the dryers can be designed differently, such as drum, belt, stationary fluidized bed, vibratory fluid bed or disc dryer.
  • a vibration-excited fluidized bed dryer for example, the material to be dried is transported by vibration via a distributor plate accommodated in a housing. The housing is thereby vibrated via spring assemblies and a corresponding vibration drive. The dryer is supplied via a supply air drying air drying, which was heated by means of a hot gas generator.
  • the supply air duct is usually located in the lower areas of the dryer, and the exhaust port in the upper areas of the Trockners, so that the drying air flows through on their way from the supply air duct to the exhaust ports, the distributor plate and the conveyed thereon Trocknungsgut, while drying the drying material.
  • the supply air duct is designed as a screwed inner trough made of heat-resistant steel sheets.
  • This has the disadvantage that at the prevailing interior temperatures of the inner trough experiences a particularly high thermal expansion, and thereby strongly discards the progress of service life, and even break at individual points. Due to the high temperatures, inner trough fastening screws can also be loosened or, after a certain period of operation, can no longer be dismantled non-destructively.
  • the introduced inner insulation is slowly destroyed by vibratory stress in vibration-induced dryer types, loses insulating effect with increasing operating time and must be renewed. After all, these types of dryers can not be cleaned with water on the inside, as the insulating layer would become completely saturated with water, which would have a very negative impact on the vibration behavior and the insulation effect.
  • the DE 26 08 228 A1 discloses a furnace for baking ceramic plates.
  • the oven has a tunnel receiving the objects to be baked, and a lower box fed with hot gases thereunder.
  • the pressurized hot gases are forced through a porous floor from the lower box into the tunnel, whereby the objects to be baked are lifted off the ground and levitated.
  • An outer wall is provided which surrounds both the tunnel and the lower box.
  • the lower box is thus surrounded by the outer wall, wherein between the inner wall and outer wall, a cooling fluid, eg air circulates.
  • the cooling air flow enters the floor laterally, is guided by horizontally extending channels within the floor, and then passes through the top of the floor and rises in the direction of the tunneling material to be backed up the tunnel.
  • the (cooling air) area between the outer and inner wall is connected to the lower box 3 by a tubular circulation channel.
  • the AT 384 349 B discloses a drying plant in which the drying chamber or its baffles are equipped with cooling elements through which circulates cooling fluid.
  • Claim 1 relates to a dryer for Trocknungsgut with a feeding point for the Trocknungsgut, a drying area, and a delivery point for the Trocknungsgut, wherein a supply air duct for the supply of a drying gas, preferably drying air, is provided to the drying area, and at least one exhaust port for the discharge the drying gas after passing through the drying region, wherein the supply air duct is at least partially spaced from an outer wall having at least one supply port for the supply of a cooling medium and at least one discharge opening for the cooling medium is provided, and between the at least one supply port and the at least a discharge opening a flow path for the cooling medium between the outer wall and the supply air duct is formed.
  • a supply air duct for the supply of a drying gas preferably drying air
  • the at least one discharge opening is designed as a passage opening in the supply air channel, which connects the area bounded by the outer wall with the interior of the supply air duct, wherein the at least one passage opening in the upper regions of the supply air duct is arranged and designed to to allow a flow of the cooling medium along the inside of the supply air duct down.
  • the cooling air thus flows after entering the supply air duct along the inner walls of the supply air duct downwards, thereby forming a "cold air curtain" between the hot drying air and the inner wall of the supply air duct, which causes a particularly effective cooling of the supply air duct.
  • the supply air duct is thus effectively flowed around by a cooling medium, and causes in this way the cooling of the supply air duct, instead of using the use of an insulating material to prevent heat transfer to housing parts.
  • the cooling of the supply air duct also prevents excessive thermal expansion, so that Material stresses can be kept behind.
  • the dryer can also be made shorter, since due to the improved cooling an increase in the drying air temperature is possible.
  • guide plates for the cooling gas can be arranged in the region of the passage openings.
  • the cooling medium may be a cooling gas, and at least one discharge opening as a passage opening in the supply air duct, which connects the limited area of the outer wall with the interior of the supply air duct, be executed.
  • the cooling gas is preferably cooling air.
  • the drying material is already comparatively hot, so that the low temperatures of the cooling air sufficient to dissipate residual moisture in the drying material.
  • the cooling medium thus fulfills not only its cooling function but also the function of a post-drying.
  • the invention is particularly advantageous when the dryer is a fluid bed dryer, in particular a vibratory fluidized bed dryer.
  • the at least one supply opening is arranged below the supply air duct.
  • the Fig. 1 shows an embodiment of a dryer according to the invention with reference to a vibration-excited fluidized bed dryer with a housing 1, which is about spring assemblies 2 and a corresponding vibration drive 3 is vibrated.
  • the dryer has a feed point 9 for the material to be dried T, as well as a delivery point 10 for the material to be dried T, wherein the drying material T passes through a drying region between the feed point 9 and the delivery point 10.
  • drying air is supplied to the dryer via the supply air opening 6 of a supply air duct 4, which air is supplied by means of a hot gas generator 5 (see FIG Fig. 4 ) was heated.
  • a supply air duct 4 is usually located in the lower areas of the dryer, and is bounded above by a distributor plate 7, such as a perforated plate bottom, on which the drying material T is transported.
  • the supply air duct 4 is often referred to as "trough inside” due to its trough-like design, and is firmly connected to the housing 1 (see also Fig. 3 ).
  • the exhaust gas openings 8 for the removal of the drying gas are usually in the upper regions of the dryer, so that the drying air flows through the inflow tray 7 and the drying material T conveyed thereon on their way from the supply air duct 4 to the exhaust ports 8, thereby drying the drying material T.
  • the supply air duct 4 is at least partially surrounded by an outer wall 11 spaced apart (see also Fig. 2 ), which has at least one supply opening 12 for the supply of a cooling medium K, and at least one discharge opening 13 for the cooling medium K is provided, wherein between the at least one supply opening 12 and the at least one discharge opening 13, a flow path 14 for the cooling medium K between the outer wall 11 and the supply air duct 4 is formed.
  • the at least one discharge opening 13 is formed by passage openings in the supply air duct 4 between the area bounded by the outer wall 11 and the supply air duct 4.
  • the cooling medium K is about cooling air, which will generally have room temperature.
  • the at least one discharge opening 13 is designed as a passage opening in the supply air duct 4, which connects the area delimited by the outer wall 11 to the interior of the supply air duct 4, wherein the at least one passage opening 13 is arranged in the upper regions of the supply air duct 4 and is designed to allow a flow of the cooling medium K along the inside of the supply air duct 4 down.
  • the flow of the cooling air K runs along the inside of the supply air channel 4 downwards, whereby guide plates can also be provided for this purpose, which support the formation of a favorable flow path.
  • guide plates can also be provided for this purpose, which support the formation of a favorable flow path.
  • a cold air curtain is formed, which effectively protects the inside of the supply air duct 4 against excessive heat load.
  • a strong heating of the supply air duct 4 can be prevented, and thus a strong thermal expansion of the steel sheets of the supply air 4.
  • the cooling air K mixes with the drying air within the supply air duct 4, but causes only a slight reduction in their temperature.
  • the cooling air K finally escapes together with the drying air through the distributor plate 7.
  • throttles 15 may be provided in the vicinity of the supply port, which are formed approximately through openings in along the longitudinal direction of the dryer extending spacer strips.
  • the throttles 15 favor a uniform flow of the cooling air K along the flow path 14 to the discharge openings 13.
  • Throttles 16 may also be provided in the discharge openings 13.
  • FIG. 4 an embodiment of a possible drying plant for drying material T is shown with a dryer according to the invention, located in the Fig. 4 located in the middle of the picture.
  • the dryer is supplied via the feed point 9 a drying material T, such as calcium carbonate, which leaves the dryer again via the delivery point 10.
  • the dryer is further supplied with drying air that has been heated by means of a hot gas generator 5.
  • the hot gas generator 5 has for this purpose a burner 17 which is supplied with fuel B, preferably gas or oil.
  • the fuel supply is controlled via a control unit 18.
  • the hot gas generator 5 furthermore has an ignition gas unit 31.
  • combustion air V is supplied to the hot gas generator 5.
  • a muffler 20 may be provided here.
  • the Fig. 5 further shows a compared to Fig. 1 Alternative embodiment in which the discharge opening 13 is directed to the discharge point 10 facing the region of the drying area.
  • the drying material is already comparatively hot, so that the low temperatures of the cooling air sufficient to dissipate residual moisture in the drying material.
  • the cooling medium thus fulfills not only its cooling function but also the function of a post-drying.
  • the drying air is supplied to the lower regions of the dryer the supply air duct 4, and discharged via exhaust ports 8, which are located in the upper region of the dryer. On its way from the supply air duct 4 to the exhaust gas openings 8, it flows through the inflow base 7 and the drying material T conveyed thereon.
  • the drying air is subsequently fed to a filter and / or separator 21, which deposits components of the drying material T entrained with the drying air. These portions can be removed via an outlet 22.
  • the filtered drying air leaves the separator 21 via the line 23, passes through a second fan 24, and is discharged via a muffler 25 as exhaust air.
  • fresh air F may be added to the drying air to control the temperature of the drying air.
  • a flow regulator 26 may be provided, which is controlled by a temperature sensor 27.
  • Another sensor 28 monitors the drying air after passing through the dryer and regulates the control unit 18 for the fuel via a flow regulator 29.
  • the flow regulator 29 is further controlled by a further sensor 30, which monitors the temperature of the drying air before entering the dryer.
  • a further blower 32 is provided, which draws in fresh air as the cooling medium K, and via the supply opening 12 (in FIG Fig. 4 not visible) the supply air duct 4 feeds.
  • the cooling air K in this case has approximately room temperature.
  • a dryer is thus realized which ensures effective cooling of the supply air channel 4 without the use of an insulating material.
  • excessive thermal expansions of the supply air duct 4 can be avoided, and thus the material stress can be reduced.
  • the maintenance can be reduced because the replacement of the insulating material, or the supply air duct 4 can be avoided.
  • an improved cooling of the supply air duct 4 and a lower heating of the supporting housing parts an increase in the carrying capacity can furthermore be achieved.
  • cleaning with water is possible, which additionally facilitates the operation of the dryer according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
EP09723198A 2008-03-19 2009-03-19 Trockner für trocknungsgut Active EP2257751B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09723198T PL2257751T3 (pl) 2008-03-19 2009-03-19 Suszarka do materiału suszonego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0016908U AT10660U1 (de) 2008-03-19 2008-03-19 Trockner mit kühlmedium
PCT/EP2009/053228 WO2009115564A1 (de) 2008-03-19 2009-03-19 Trockner für trocknungsgut

Publications (2)

Publication Number Publication Date
EP2257751A1 EP2257751A1 (de) 2010-12-08
EP2257751B1 true EP2257751B1 (de) 2012-10-31

Family

ID=40600530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09723198A Active EP2257751B1 (de) 2008-03-19 2009-03-19 Trockner für trocknungsgut

Country Status (8)

Country Link
US (1) US8800161B2 (zh)
EP (1) EP2257751B1 (zh)
CN (1) CN102016471B (zh)
AT (1) AT10660U1 (zh)
CA (1) CA2717838C (zh)
PL (1) PL2257751T3 (zh)
RU (1) RU2490572C2 (zh)
WO (1) WO2009115564A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196967A (zh) * 2016-08-29 2016-12-07 成都欧林生物科技股份有限公司 一种干燥灭菌系统
CN106225451A (zh) * 2016-08-29 2016-12-14 成都欧林生物科技股份有限公司 基于提高烘干效率的隧道式烘干机
CN106288711A (zh) * 2016-08-29 2017-01-04 成都欧林生物科技股份有限公司 基于干燥效果的隧道式烘干机
CN106288742A (zh) * 2016-08-29 2017-01-04 成都欧林生物科技股份有限公司 便于更换加热装置的灭菌系统
CN106288713A (zh) * 2016-08-29 2017-01-04 成都欧林生物科技股份有限公司 一种烘干灭菌器改进机构
CN106369984A (zh) * 2016-08-29 2017-02-01 成都欧林生物科技股份有限公司 基于提高干燥气流均匀性的隧道式烘干机

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AT10660U1 (de) 2008-03-19 2009-07-15 Binder Co Ag Trockner mit kühlmedium
US20100146814A1 (en) * 2008-12-11 2010-06-17 Baker Stephen T Vibratory Flash Dryer
RU2460025C1 (ru) * 2011-01-11 2012-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗ ГУ) Многосекционная вибрационная сушилка для сахара-песка
US20150275822A1 (en) * 2014-03-28 2015-10-01 Furness-Newburge, Inc. Supercharged pulse jet engine and related method of use
CN105241215A (zh) * 2015-11-08 2016-01-13 周伟初 一种气流式烘干输送系统
CN105575859B (zh) * 2016-03-04 2018-07-17 京东方科技集团股份有限公司 一种空气帘装置
CN106765162A (zh) * 2016-12-20 2017-05-31 四川雷鸣生物环保工程有限公司 循环烟气搅拌干燥机
CN106766685A (zh) * 2016-12-21 2017-05-31 宁波沪港食品机械制造有限公司 啤酒糟卧式流态化搅拌干燥机
CN111981771A (zh) * 2019-05-21 2020-11-24 江苏苏盐井神股份有限公司 一种新型片状二水氯化钙干燥冷却装置及方法
CN114294912B (zh) * 2022-01-07 2022-11-11 季华恒一(佛山)半导体科技有限公司 一种电加热式烘干系统

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196967A (zh) * 2016-08-29 2016-12-07 成都欧林生物科技股份有限公司 一种干燥灭菌系统
CN106225451A (zh) * 2016-08-29 2016-12-14 成都欧林生物科技股份有限公司 基于提高烘干效率的隧道式烘干机
CN106288711A (zh) * 2016-08-29 2017-01-04 成都欧林生物科技股份有限公司 基于干燥效果的隧道式烘干机
CN106288742A (zh) * 2016-08-29 2017-01-04 成都欧林生物科技股份有限公司 便于更换加热装置的灭菌系统
CN106288713A (zh) * 2016-08-29 2017-01-04 成都欧林生物科技股份有限公司 一种烘干灭菌器改进机构
CN106369984A (zh) * 2016-08-29 2017-02-01 成都欧林生物科技股份有限公司 基于提高干燥气流均匀性的隧道式烘干机

Also Published As

Publication number Publication date
AT10660U1 (de) 2009-07-15
CN102016471A (zh) 2011-04-13
CA2717838A1 (en) 2009-09-24
CA2717838C (en) 2016-05-31
US20110035955A1 (en) 2011-02-17
CN102016471B (zh) 2013-01-09
RU2010138094A (ru) 2012-04-27
PL2257751T3 (pl) 2013-03-29
RU2490572C2 (ru) 2013-08-20
EP2257751A1 (de) 2010-12-08
US8800161B2 (en) 2014-08-12
WO2009115564A1 (de) 2009-09-24

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