EP4533011A1 - Umbausatz für eine behandlungsanlage und verfahren zum umbau einer behandlungsanlage - Google Patents
Umbausatz für eine behandlungsanlage und verfahren zum umbau einer behandlungsanlageInfo
- Publication number
- EP4533011A1 EP4533011A1 EP23729939.1A EP23729939A EP4533011A1 EP 4533011 A1 EP4533011 A1 EP 4533011A1 EP 23729939 A EP23729939 A EP 23729939A EP 4533011 A1 EP4533011 A1 EP 4533011A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clean gas
- fresh air
- heat exchanger
- air
- oxidation device
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
- F26B23/022—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/063—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
- F26B23/005—Heating arrangements using waste heat recovered from dryer exhaust gases using a closed cycle heat pump system ; using a heat pipe system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
-
- 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
-
- 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
- F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
- F26B21/20—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/25—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- 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 goods
- F26B2210/12—Vehicle bodies, e.g. after being painted
Definitions
- the present invention relates to a conversion kit for converting a treatment system, in particular an existing treatment system, for the treatment of workpieces, in particular drying vehicle bodies, and a method for converting a treatment system.
- the state of the art in heating such drying systems, or dryers for short, is the combination of exhaust air purification and heat provision.
- the remaining heat of the cleaned dryer exhaust air which is also referred to as clean gas, is used in downstream heat recovery systems to heat the circulating air in the circulating air units or modules of the individual dryer zones or sections as well as to heat the fresh air in the fresh air units or heat exchangers is used before the exhaust air is then discharged into the atmosphere (via the roof).
- a constant exchange of the dryer atmosphere with solvents (exhaust air) against a solvent-free fresh air flow is planned.
- an exhaust air volume flow is removed from one or more points in the treatment room or the drying tunnel and fed to a device for exhaust air purification, usually a recuperative thermal afterburning (TAR).
- TAR recuperative thermal afterburning
- the individual dryer sections are heated via circulating air modules with their own heat exchanger, while the clean gas flow moves along the clean gas guide, which connects the circulating air modules, cools down. Finally, the pure gas stream flows through a fresh air heat exchanger and leaves the drying system at a temperature of, for example, 130 °C above the roof.
- Fossil fuel heating is accompanied by an exhaust gas stream that contains pollutants such as nitrogen oxides, which must not enter the dryer atmosphere because they have a negative effect on the quality of the paint.
- the conversion also means dismantling the existing heating concept, i.e. dismantling the clean gas line along the entire length of the dryer, dismantling the clean gas ducts and flaps in the area of the recirculating air/fresh air units and possibly dismantling the exhaust air duct to the TAR.
- the latter depends on where the new exhaust air purification should or can be located.
- the treatment system to be converted which is or includes preferably an existing treatment system with a convertible basic structure, has a conveying direction and comprises the following: a treatment room, which comprises a plurality of treatment room sections, each of which is assigned to a separate circulating air module, each of which includes a heat exchanger; an exhaust air duct which removes exhaust air from the treatment room; the thermal afterburning device, in particular heated by fossil fuels, for processing, in particular for cleaning, the exhaust air which is intended for conversion or replacement; a clean gas guide, which guides cleaned exhaust air, in particular clean gas, the clean gas guide preferably running at least approximately parallel to the conveying direction; and a fresh air supply, which supplies fresh air to the treatment room.
- the invention is based on the basic idea that the effort required to convert a treatment system should be kept as low as possible and the scope of further or. reused components of the existing system are as large as possible. Accordingly, the conversion to electrical heating is not aimed at direct heating, but rather aims at making the existing indirect heating compatible with electrical heating.
- the pure gas infrastructure can therefore continue to be used, in particular for central and indirect electrical dryer heating.
- the F-RTO contains a single lying, electrically heated bed and the flow direction can be switched cyclically using poppet valves. As the flow flows through the bed, preheating takes place up to the core, which results in a chemical reaction without the supply of a combustion gas.
- the F-RTO can be operated autothermally as soon as the solvent concentration has exceeded a certain limit.
- a certain limit In the case of an autothermal reaction, for example, approximately 20 K of temperature can be gained at a solvent concentration of 1 g/m 3 , with the temperature gain increasing as the solvent concentration increases.
- the F-RTO can preferably have a catalytic effect.
- all electrically operated heating components (such as, among other things, the electrically operated additional heating devices) of the converted treatment system can be supplied with a medium voltage of, for example, at least approximately 3 kV and/or at most approximately 8 kV, in particular 4,160 V to 6,600 V, instead of the usual 400 V.
- the one or more additional heating devices are purely electrically operated, hydrogen-operated or thermal oil-operated additional heating devices.
- the one or more purely electrically operated additional heating devices and/or the purely electrically operated, flameless, regenerative thermal oxidation device can be connected to a central electrical connection point, in particular a center of gravity station.
- a central electrical connection point not only saves installation space, but also reduces costs.
- the thermal afterburning device of the treatment system which is heated in particular by fossil fuels, can be used as a fresh air heat exchanger, in particular after the conversion.
- the clean gas can be guided exclusively to the fresh air heat exchanger by means of the clean gas guide, i.e. in particular that the clean gas is not guided through the circulating air modules.
- the clean gas flow can flow through counter to the conveying direction.
- the regenerative thermal oxidation device is arranged at one end of the clean gas guide in relation to the conveying direction.
- Such a design of the fresh air heat exchanger is particularly advantageous if the oxidation device is arranged too far away from the treatment room, for example outside the building, because by means of a thermal oil circuit or a circuit system, sensitive and latent heat energy can be transferred efficiently from the exhaust air flow that is further away in location Fresh air required for the treatment room can be transferred.
- the cleaned exhaust air or the clean gas can be heated to a temperature of 450 ° C to 480 ° C, so a clean gas temperature can be provided for dryer heating that is comparable to that which was achieved in the previous use of TAR was available in treatment facilities.
- the present invention is also based on the object of providing a method which enables a treatment system, in particular an existing treatment system, to be converted into an exhaust-air-reduced, electrically heated treatment system.
- the method preferably has one or more of the features and/or advantages described in connection with the conversion kit.
- the previous circulating air modules are retained, i.e. preferably left in their position, and the respective heat exchangers are preferably replaced by electrical heating registers.
- the one or more purely electrically operated, hydrogen-operated or thermal oil-operated additional heating devices and/or the purely electrically operated, preferably flameless, regenerative thermal oxidation device are connected to a central electrical connection point, in particular a center of gravity station.
- the clean gas flows through the clean gas duct in the opposite direction to the conveying direction.
- FIG. 4 shows a schematic representation of a third embodiment of a converted treatment system
- 5 shows a schematic representation of a fourth embodiment of a converted treatment system
- a basic structure of a treatment system in particular an existing treatment system, shown in FIG. 1 and designated as a whole by 100, is used to treat workpieces (not shown), in particular to dry vehicle bodies.
- the treatment plant basic structure 100 should be understood as the basis of a treatment plant, which is the basis of a conversion or whose components are further used and/or are functionally and/or structurally integrated into the converted system. All components of the treatment plant basic structure 100 are therefore also to be understood as being contained in a treatment plant, in particular an existing treatment plant.
- the treatment plant basic structure 100 includes a treatment room 104 and a post-treatment room 106.
- the workpieces to be treated are conveyed through the treatment room 104 and the after-treatment room 106 along a conveying direction 116.
- the treatment room 104 further comprises an inlet lock 118 and/or an outlet lock 120, which are supplied with preferably preheated fresh air via a fresh air duct 122 to form an air silhouette.
- the fresh air duct 122 is additionally or alternatively connected to at least one of the recirculating air modules 110 or supplies at least one recirculating air module 110 with fresh air.
- Exhaust air is removed from the treatment room 104, preferably in the middle, via an exhaust air duct 124.
- FIG. 1 The basic structure of a treatment system 100 shown in FIG. 1 forms the basis in FIGS. 2 to 6 from which the conversion components or conversion process steps are described.
- the basic structure 100 or the system infrastructure of the existing treatment system and the corresponding components that will continue to be used after the conversion are shown in FIGS. 1 to 6 as dashed symbols or with dashed lines.
- the schematic position of the components that are replaced or exchanged as part of the conversion are shown in the figures as dotted symbols or with dotted lines.
- the components of the treatment plant basic structure 100 are marked with reference numbers in the range from 100 to 199, while conversion or new components are marked with reference numbers in the range greater than or equal to 200.
- the oxidation device 204 replaces a previously used, in particular fossil-heated, thermal afterburning device 142 at the appropriate position.
- the afterburning device 142 which in particular is heated or fired by fossil fuels, is replaced by the electrically heated oxidation device 204 and the temperature rise caused by the cleaning or processing of the exhaust air in the oxidation device 204 is used to heat the treatment room sections 108.
- the processed exhaust air or the clean gas is additionally heated downstream of the oxidation device 204 by an electrically operated additional heating device 206 so that the heat input into the local circulating air streams 112 is sufficient for the treatment of the workpieces, i.e. in particular the drying of the vehicle bodies.
- the arrangement of further electrically operated additional heating devices 208 between the circulating air modules 110 also avoids excessive heating power and excessively high necessary surface temperatures on the electrically operated additional heating device 206.
- the clean gas flows through the clean gas guide 126 in the conveying direction 116 and transfers its thermal energy to the supplied fresh air 146 in a fresh air heat exchanger 144, which can in particular be part of the basic treatment system structure 100, in order to then be discharged as a cooled clean gas stream 148 over the roof.
- Control flaps are also used in the area of the fresh air heat exchanger 144 and the circulating air modules 110.
- the appropriately tempered fresh air is finally preferably supplied to the inlet lock 118 and/or the outlet lock 120 via the fresh air supply 122 and from there is circulated in the local circulating air streams 112 of the treatment room sections 110.
- FIG 3 shows a second embodiment of the treatment system 200 converted with a conversion kit 202.
- the oxidation device 204 replaces the fresh air heat exchanger 144 of an existing system in its original position, whereas the fossil-fuel heated, in particular, requires minimal effort and is reduced in cost.
- thermal afterburning device 142 remains in its position and is only converted so that its internal heat exchanger can be used as a fresh air heat exchanger 150.
- the treatment room 104 with respect to the conveying direction 116, is preceded by a pretreatment room in which the workpieces are pretreated in one or more pretreatment room sections, with each pretreatment room section being assigned a separate circulating air module.
- a converted treatment system 200 it may be necessary to arrange additional electrically operated additional heating devices 208 on or in the clean gas duct 126 in order to be able to transfer sufficient heat energy for the heat transfer from the clean gas to the local circulating air flows 112 in the area of the pretreatment room sections.
- the required temperature level in the pretreatment room is generally lower than in the treatment room, which is why further electrically operated additional heating devices 208 between the circulating air modules 110 assigned to the pretreatment room sections may be unnecessary.
- the third embodiment of a treatment system 200 converted with a conversion kit 202, shown in FIG. 4, differs from the first Embodiment in that the thermal afterburning device 142, in particular heated by fossil fuels, is also replaced by a purely electrically operated, flameless, regenerative thermal oxidation device 204, but in a different position.
- the original afterburning device 142 is either shut down and bypassed in the positions indicated in FIG. 4 or removed from this position.
- the oxidation device 204 is arranged downstream of the circulating air modules 110 and upstream of the fresh air heat exchanger 144.
- the central and indirect heating of circulating air modules or units via the oxidation device 204 is not used. Nevertheless, the temperature rise in the context of cleaning the exhaust air in the oxidation device 204 is provided in the order of approximately 20 K of the fresh air heating in the fresh air heat exchanger 144.
- the local circulating air flows 112 are heated decentrally by means of direct electric heating via the corresponding circulating air modules 214, comparable to the installation of a new system that is preferably purely electrically operated.
- the oxidation device 204 is preferably arranged or set up close to the dryer for the purpose of cleaning the exhaust air from the treatment room 104.
- dynamic pressure changes must be expected, which can have a negative effect on the balance of the treatment room 104.
- the reason for this are pressure surges that occur within the oxidation device 204 due to recurring switching processes of the flow over the thermal bed of the oxidation device 204. These changes take place depending on the solvent concentration and the temperature, for example every 3 to 7 minutes, the changeover taking place via poppet valves and being necessary to stabilize the temperature profile via the thermal bed of the oxidation device 204.
- the one or more oxidation devices 204 are flowed through by streams of smaller volume, whereby the pressure surges caused by the switchover are reduced in their intensity and the atmospheric balance of the treatment room 104 is less influenced.
- purge air for temperature control and/or regulation of the thermal bed of the oxidation device 204 can be supplied to a separate chimney 234 via a purge air duct 232, in which case the volume flow can also be controlled and/or regulated via a further valve device 236.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022113079.7A DE102022113079A1 (de) | 2022-05-24 | 2022-05-24 | Umbausatz für eine Behandlungsanlage und Verfahren zum Umbau einer Behandlungsanlage |
| PCT/DE2023/100380 WO2023227167A1 (de) | 2022-05-24 | 2023-05-23 | Umbausatz für eine behandlungsanlage und verfahren zum umbau einer behandlungsanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4533011A1 true EP4533011A1 (de) | 2025-04-09 |
Family
ID=86760227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23729939.1A Pending EP4533011A1 (de) | 2022-05-24 | 2023-05-23 | Umbausatz für eine behandlungsanlage und verfahren zum umbau einer behandlungsanlage |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250207857A1 (de) |
| EP (1) | EP4533011A1 (de) |
| CN (1) | CN119256198A (de) |
| DE (2) | DE102022113079A1 (de) |
| WO (1) | WO2023227167A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306695B1 (de) * | 1987-09-08 | 1993-10-06 | WS Wärmeprozesstechnik GmbH | Heissgaserzeugungseinrichtung mit thermischer Nachverbrennung |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5664942A (en) * | 1994-10-25 | 1997-09-09 | Abb Air Preheater, Inc. | Regenerative thermal oxidizer |
| EP0849001A1 (de) * | 1996-12-20 | 1998-06-24 | Robert sen. Wälti | Spritzkabine und Luftzirkulationssystem für einen Arbeitsraum |
| US20100299956A1 (en) * | 2009-05-29 | 2010-12-02 | Recycled Energy Development, Llc | Apparatus and Method for Drying Wallboard |
| AT515887A1 (de) * | 2014-05-20 | 2015-12-15 | Ge Jenbacher Gmbh & Co Og | Verfahren zum Anfahren eines Thermoreaktors |
| DE102015214706A1 (de) | 2015-07-31 | 2017-02-02 | Dürr Systems Ag | Behandlungsanlage und Verfahren zum Behandeln von Werkstücken |
| DE102015012466A1 (de) * | 2015-09-29 | 2017-03-30 | Eisenmann Se | Vorrichtung zur Temperierung von Gegenständen, insbesondere zum Trocknen von beschichteten Fahrzeugkarosserien |
| DE102015219898A1 (de) | 2015-10-14 | 2017-04-20 | Dürr Systems GmbH | Werkstückbearbeitungsanlage und Verfahren zum Betreiben einer Werkstückbearbeitungsanlage |
| DE102015224916A1 (de) | 2015-12-10 | 2017-06-14 | Dürr Systems Ag | Behandlungsanlage und Verfahren zum Behandeln von Werkstücken |
| CN110567263A (zh) * | 2019-09-17 | 2019-12-13 | 上海兰宝环保科技有限公司 | 一种挥发性有机物源头控制及末端治理系统 |
-
2022
- 2022-05-24 DE DE102022113079.7A patent/DE102022113079A1/de not_active Withdrawn
-
2023
- 2023-05-23 WO PCT/DE2023/100380 patent/WO2023227167A1/de not_active Ceased
- 2023-05-23 CN CN202380040203.0A patent/CN119256198A/zh active Pending
- 2023-05-23 DE DE112023002389.1T patent/DE112023002389A5/de active Pending
- 2023-05-23 EP EP23729939.1A patent/EP4533011A1/de active Pending
- 2023-05-23 US US18/850,986 patent/US20250207857A1/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306695B1 (de) * | 1987-09-08 | 1993-10-06 | WS Wärmeprozesstechnik GmbH | Heissgaserzeugungseinrichtung mit thermischer Nachverbrennung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022113079A1 (de) | 2023-11-30 |
| WO2023227167A1 (de) | 2023-11-30 |
| US20250207857A1 (en) | 2025-06-26 |
| CN119256198A (zh) | 2025-01-03 |
| DE112023002389A5 (de) | 2025-03-06 |
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