EP4327039A1 - Installation de traitement de pièces et procédé de production et de fonctionnement d'une telle installation de traitement de pièces - Google Patents

Installation de traitement de pièces et procédé de production et de fonctionnement d'une telle installation de traitement de pièces

Info

Publication number
EP4327039A1
EP4327039A1 EP22725160.0A EP22725160A EP4327039A1 EP 4327039 A1 EP4327039 A1 EP 4327039A1 EP 22725160 A EP22725160 A EP 22725160A EP 4327039 A1 EP4327039 A1 EP 4327039A1
Authority
EP
European Patent Office
Prior art keywords
exhaust air
burner
module
clean gas
process chamber
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
Application number
EP22725160.0A
Other languages
German (de)
English (en)
Inventor
Björn Beeh
Heiko Dieter
Dietmar Wieland
Kevin Woll
Oliver IGLAUER-ANGRIK
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.)
Duerr Systems AG
Original Assignee
Duerr Systems 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 Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP4327039A1 publication Critical patent/EP4327039A1/fr
Pending legal-status Critical Current

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
    • 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 or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/04—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
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • 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
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • the present invention relates to a workpiece processing system, in particular a workpiece processing system for drying and / or curing painted and / or coated and / or glued workpieces, with a thermal exhaust air cleaning device and a method for producing such a workpiece processing system.
  • the invention relates to the field of continuous dryers, continuous curing systems, chamber dryers and chamber curing systems in which painted and/or bonded bodies or body parts can be dried and/or cured.
  • TAR devices consist of a burner and a combustion chamber, with the combustion chamber having to be designed very complex and expensive for high combustion temperatures due to its function (e.g. use of high-quality steel). Due to the complexity, the TAR devices cannot usually be changed/adapted, which is why they have to be replaced, for example, in the event of capacity changes and/or restructuring of workpiece processing systems, which is very time-consuming and cost-intensive. In addition, the TAR device must generally be designed for maximum values, which can usually also lead to large dimensions and thus to difficult installation in the respective workpiece processing system.
  • the workpiece processing system has a process chamber for receiving workpieces to be processed, the process chamber being connected to at least one fresh air line for introducing fresh air into the process chamber and at least one exhaust air line for discharging exhaust air to be cleaned from the process chamber.
  • the workpiece processing system according to the invention has at least one modular thermal exhaust air cleaning system (TAR system) with several burner modules, each of which has a combustion chamber with a combustion chamber for thermal treatment of a raw gas therein, a burner connected to the combustion chamber (e.g.
  • This at least one modular TAR system can be divided into one or more exhaust air cleaning devices, each of which has a single burner module or at least two burner modules coupled to one another and which can each be individually positioned in the workpiece processing system and individually connected to the at least one exhaust air line.
  • the several raw gas inlets of the several burner modules are connected either individually to a respective raw gas supply line or in groups to a common raw gas supply line, and the several clean gas outlets of the several burner modules are optionally connected individually to a respective clean gas discharge line or in groups to a common one Clean gas outlet connected.
  • the proposed modularity of the TAR system enables a flexible structure with different numbers of burner modules and modules with different numbers of separate exhaust air cleaning devices with flexible numbers of burners, as well as simple modification of individual burner modules, so that the TAR system can easily be adapted to variable power requirements and/or variable structures of the workpiece processing system can be adjusted.
  • the modularity opens up many different integration options for the TAR system in the overall structure of the plant, since the TAR system can be set up either as (i) a complete modular device with all burner modules or (ii) in several parts with one or more due to the flexible/any subdivisibility Sub-module device, each with at least two burner modules or (iii) multi-part devices with one or more individual modules, each with a single burner module or (iv) multi-part with one or more sub-module devices, each with at least two burner modules and one or more individual module devices, each with a single burner module, so that, based on the existing TAR system, for example, local conditions, available space, process engineering advantages, specific requirements of the system or energetic boundary conditions can be easily addressed can be.
  • the sub-module devices and the individual module devices require less space and can therefore also be easily installed in complex system structures with small assembly spaces, and the division of the TAR system into separate sub-module devices and/or individual module devices enables a simple connection to several exhaust air lines of the system , which can even be far apart.
  • the modularity opens up a flexible mode of operation of the existing TAR system, in particular through a variable number of burner modules that can be operated, so that the performance of the TAR system can be easily adapted, for example to the current exhaust air quantities and/or current thermal energy requirements of the system.
  • the workpiece treatment system according to the invention has at least one such modular TAR system.
  • the proposed modular TAR system, which can optionally be divided into several exhaust air cleaning devices differs from conventional systems with several exhaust air cleaning devices, for example, by the variability of the subdivision and the number of burner modules in one exhaust air cleaning device.
  • the process chamber of the workpiece processing system is provided with a single heating circuit.
  • the TAR system can preferably have an overall module device in which all burner modules of the TAR system are coupled to one another, with the raw gas inlets of all burner modules being connected to the at least one exhaust air line and the clean gas outlets of all burner modules being connected to a common clean gas discharge line, and the common clean gas discharge line being connected to one heating circuit of the process chamber via a heat exchanger.
  • the heat exchanger can be configured for heat transfer from the clean gas to a heating gas of the heating circuit or alternatively for introducing at least part of the clean gas as heating gas into the heating circuit.
  • the process chamber of the workpiece processing system is connected to at least two exhaust air lines and is provided with at least two separate heating circuits.
  • the TAR system can preferably have at least two sub-module devices, each with at least two burner modules coupled to one another, the raw gas inlets of which are all connected to one of the at least two exhaust air lines and the clean gas outlets of which are all connected to a respective common clean gas discharge line, with the common clean gas discharge lines are each connected via a respective heat exchanger to the respective heating circuit of the process chamber.
  • This embodiment is particularly advantageous for workpiece processing systems in which the process chamber has two process chamber zones with different temperatures (e.g. for pre-dryer and main dryer).
  • the heat exchangers can each be configured to transfer heat from the clean gas to a heating gas of the respective heating circuit or, alternatively, also to introduce part of the clean gas as heating gas into the respective heating circuit.
  • the process chamber of the workpiece processing system is provided with several circulating air circuits.
  • the TAR system can preferably have an overall module group in which all burner modules are coupled to one another, with the raw gas inlets of all burner modules being connected to the at least one exhaust air line and the clean gas outlets of all burner modules being connected to a common clean gas discharge line, and with the common clean gas discharge line being connected via respective circulating air heat exchanger or respective circulating air mixing chambers with at least one part, preferably with all circulating air circuits is connected.
  • the circulating air circuits can at least partially each have a circulating air recuperator, in which case the circulating air heat exchanger or circulating air mixing chambers are preferably contained in the respective circulating air recuperators.
  • the process chamber of the workpiece processing system is connected to at least two exhaust air lines and is provided with a number of circulating air circuits.
  • the TAR system can preferably have at least two sub-module devices, each with at least two burner modules coupled to one another, the raw gas inlets of which are all connected to one of the at least two exhaust air lines and the clean gas outlets of which are all connected to a respective common clean gas discharge line, with the at least two common clean gas discharges are each connected via respective circulating air heat exchangers or respective circulating air mixing chambers with part of the circulating air circuits.
  • the circulating air circuits can at least partially each have a circulating air recuperator, in which case the circulating air heat exchanger or circulating air mixing chambers are preferably contained in the respective circulating air recuperators. Via the circulating air mixing chambers, which are connected to the clean gas discharge line and the circulating air lines of the respective circulating air circuits, part of the clean gas can be mixed into the circulating air flow for heating the process chamber or dryer.
  • the process chamber of the workpiece processing system is connected to a number of exhaust air lines and provided with a number of air circulation circuits.
  • the TAR system can preferably have a plurality of individual module devices, each with a single burner module, the raw gas inlets of which are each connected to one of the plurality of exhaust air lines and the clean gas outlets of which are each connected to a single clean gas discharge line, the plurality of individual clean gas discharge lines each having a respective Circulating air heat exchanger or a respective circulating air mixing chamber are connected to a respective one of the several circulating air circuits.
  • the circulating air circuits can at least partially each have a circulating air recuperator, in which case the circulating air heat exchanger or circulating air mixing chambers are preferably contained in the respective circulating air recuperators.
  • the circulating air mixing chambers Via the circulating air mixing chambers, which are connected to the clean gas discharge line and the circulating air lines of the respective circulating air circuits, part of the clean gas can be mixed into the circulating air flow for heating the process chamber or dryer.
  • the entire module device or the partial module devices or the individual module devices can also be connected on the input side to a fresh air line to the exhaust air from the Mixing process chamber with fresh air.
  • the fresh air inlet can be mixed with the exhaust air introduced via the raw gas inlets or via additional fresh air inlets.
  • the fresh air supply can take place in all burner modules or in some of the burner modules.
  • the process chamber of the workpiece processing system is provided with several circulating air circuits, each of which contains a circulating air recuperator with a circulating air heat exchanger or a circulating air mixing chamber.
  • the TAR system may preferably have multiple single module devices, each with a single burner module, each integrated with a respective one of the multiple forced air recuperators.
  • the TAR system can also have at least one partial module device with two or more burner modules, which is also integrated into one of the several circulating air recuperators, which can be particularly advantageous, for example, when there is an increased heat requirement in a zone of the process chamber can.
  • the common clean gas discharge line or the common clean gas discharge lines or the individual clean gas discharge lines in the above embodiments can each also be connected to the at least one fresh air line via a further heat exchanger downstream of the heat exchanger of the heating gas circuits or the circulating air circuits.
  • the at least one fresh air line can have a fresh air recuperator, in which case the fresh air heat exchanger is preferably contained in this fresh air recuperator.
  • the TAR system can also have one or more additional modules without burners, each of which can be optionally integrated into an exhaust air cleaning device of the TAR system in such a way that their interiors can be combined with the combustion chambers of the respective adjacent combustion chambers to form a common interior are connected, and each have at least one additional function element.
  • the TAR system preferably has the same number of additional modules as the number of burner modules, so that in extreme cases all individual module devices can each be supplemented by an additional module.
  • the integration of an additional module can be integrated into a burner module on the edge of the respective exhaust air purification device or between two burner modules.
  • the additional modules have as an additional functional element, for example, a heating device (e.g. electric, inductive, with a burner, etc.) for heating the combustion chamber of the combustion module or the combustion chambers or the common combustion chamber of the combustion modules to a combustion temperature or with increased power for rapid heating.
  • a heating device e.g. electric, inductive, with a burner, etc.
  • An alternative or at least one further additional function element can, for example, have at least one additional function for the respective exhaust air purification device of the TAR system, which is selected from: (a) enlarging a (common) combustion chamber of the combustion chambers); (b) Compensating for dimensional changes (in particular thermally induced changes in length) of the exhaust air purification device; (c) Heat transfer from the clean gas in the common interior space to another fluid outside the exhaust air cleaning device; (d) hot gas discharge; (e) heat storage; (f) catalyst; (g) discharge of fluids and/or particles from the common inner space; (h) injecting additives into the common interior space; and (i) adsorbing or absorbing indoor pollutants.
  • the combustion chambers of burner modules coupled to one another in an exhaust air purification device of the TAR system can be connected to one another at least partially, preferably all, via through-openings, so that gas can be exchanged between the respective adjacent burner modules and thus uniform heating can take place.
  • a common combustion chamber in this way, for example, the required scavenging/pre-ventilation can also be carried out jointly for the common combustion chamber of all combustion chambers.
  • This connection of the combustion chambers can optionally also be designed in such a way that the passage openings can each be shut off by a shut-off element (eg a flap or a slide).
  • the entire module device or partial module device can also be preheated to the required minimum reaction temperature (e.g. about 750° C.) for safe/effective treatment of the raw gas, for example with only one burner as a heating burner.
  • the overall module device or partial module device for heating the common combustion chamber to the minimum reaction temperature can also have at least one heating device (e.g. a electrical or electromagnetic heating device or a switchable high-temperature heat source of another type such as a heating burner) which is coupled in the area of the common combustion chamber, for example to the combustion chamber of a burner module, or is provided as an additional functional element of an additional module.
  • a common combustion chamber for all burner modules only a single heating device is preferably provided.
  • the heating device also includes safety technology for monitoring the presence of a flame (eg, a photocell for flame monitoring).
  • a flame e.g, a photocell for flame monitoring
  • the burners of the multiple burner modules can all be configured more simply and controlled with less effort, since they all do not have to be used as heating burners and also do not require any safety technology to monitor the heating. While the common combustion chamber is being heated--depending on the embodiment--by a burner as a heating burner or by the heating device, the other burners or all burners of the burner modules remain switched off.
  • a valve device can be provided at the raw gas inlets of the burner modules of the TAR system for selectively opening or closing and optionally also for throttling the respective raw gas inlet, with these valve devices also being controllable independently of one another by burner modules that are coupled to one another.
  • a total air volume of the raw gas to be cleaned can be distributed over a suitable number of burner modules that are coupled to one another, so that the individual burners of the overall module group or sub-module group are each supplied with at least a minimum air volume and at most a maximum air volume for burner operation.
  • valve devices In the case of individual module devices, these devices can then be put into operation independently of one another or kept in standby mode by these valve devices, depending on the operating state or operating mode of the workpiece processing system. If the burner modules also have gas inlets for fuel, such valve devices can preferably also be provided for selectively opening or closing and optionally also for throttling the respective gas inlet.
  • an exhaust air fan for controlling the exhaust air flow rate can be provided in the at least one exhaust air line upstream of the TAR system. If at least two separate exhaust air cleaning devices of the TAR system are connected to an exhaust air line, it is preferable to An exhaust air fan is provided for connection of the exhaust air duct, so that the distribution of the exhaust air flow rate to the several exhaust air cleaning devices can be flexibly regulated.
  • At least one additional burner module can be added to the TAR system or at least one existing burner module can be removed and/or the burner modules of the TAR system (also in the separate exhaust air cleaning devices) can be exchanged (i.e. replaced by new burner modules).
  • the burner of at least one burner module of the TAR system can have an integrated heat transfer system for heat transfer from the outflowing clean gas to the inflowing raw gas and/or inflowing fuel. That is, the burner is designed as a recuperative burner. All or most burners of the modular TAR system are preferably designed as recuperative burners. In this configuration, it is advantageous if the burners are each connected at the top of the respective combustion chamber and protrude downwards into the respective combustion chamber, since the overhead burners expand slightly vertically downwards into the combustion chambers at high temperatures without losing their functionality and without changing the distances between the burners or elements of the heat transfer systems, in particular reducing them and without experiencing forces against you.
  • this design can also promote the settling of solids and/or condensates from the raw gas, which can occur, for example, with certain paint systems as part of the combustion process.
  • the burners can also hang from the bottom of the combustion chambers and protrude upwards into the combustion chambers and expand vertically upwards somewhat at high temperatures. This alternative embodiment can be of particular advantage when the crude gas treatment device according to the invention is elevated, for example installed on a support frame or roof.
  • the subject matter of the invention is also a method for producing a workpiece processing system of the invention as described above.
  • a process chamber for receiving workpieces to be processed is provided, the process chamber having at least one fresh air line for introducing fresh air into the process chamber and at least one exhaust air line for discharging exhaust air to be cleaned from the process chamber is connected.
  • at least one modular thermal exhaust air purification system with a plurality of burner modules is also provided in the method, each of which has a combustion chamber with a combustion space for the thermal treatment of a raw gas therein, a burner connected to the combustion chamber (e.g.
  • This at least one modular TAR system is then divided into one or more exhaust air cleaning devices, each having a single burner module or at least two burner modules coupled to one another. Thereafter, the one or more exhaust air purification devices formed in this way can be individually positioned relative to the process chamber and individually connected to the at least one exhaust air line.
  • the method for operating the workpiece processing system of the invention described above preferably includes at least one of the following aspects:
  • the multiple sub-module devices and/or single module devices of the at least one modular TAR system are individually operated (e.g., powered on, powered off);
  • the multiple burner modules of the one overall module device and/or the at least one partial module device of the at least one modular TAR system are operated individually or in groups (eg switched on, switched off); and (iii) controlling the exhaust air flow rate from the process chamber through the at least one exhaust duct to the one or more exhaust air cleaning devices of the at least one modular thermal exhaust air cleaning system.
  • the performance of the entire TAR system or of the individual exhaust air cleaning devices can be adapted, for example, to the operating state of the process chamber and thus, if necessary, the energy requirement can also be reduced.
  • the number of activated burners in a total or partial module device can be reduced when the total air volume of the exhaust air to be cleaned is low, so that the individual burners of the burner modules can be operated in advantageous operating ranges and energy can also be saved.
  • the individual active burner modules in a formed exhaust air cleaning device the individual active burner modules can also be exchanged, for example in part-load operation, so that the loads on the multiple burners can be equalized.
  • the amount of exhaust air flow can be regulated, for example depending on the dryer utilization (number of car bodies in the dryer) and thus depending on the solvent load that is brought into the dryer by the car bodies.
  • the above methods of manufacturing and operating the workpiece processing system preferably further each comprise at least one of the steps of adding at least one additional torch module to the modular TAR system; removing at least one burner module from the modular TAR system; and replacing at least one burner module in the modular TAR system with a new burner module.
  • the modularity of the TAR system and thus also of the exhaust air purification devices formed enables burner modules to be exchanged/supplemented/removed with little effort.
  • the invention can be used for any workpiece processing systems that require thermal exhaust air purification.
  • the invention can be used particularly advantageously with the modular TAR system for workpiece processing systems for drying/crosslinking/hardening painted and/or coated and/or bonded workpieces (e.g. bodies or body parts), for example in the form of continuous dryers, continuous hardening systems, chamber dryers or chamber hardening Investments.
  • 1 shows a cross-sectional view of a first embodiment variant of the modular thermal exhaust air cleaning system for a workpiece processing system according to the present invention
  • 2 shows a cross-sectional view of a second embodiment variant of the modular thermal exhaust air cleaning system for a workpiece processing system according to the present invention
  • FIG. 3 shows an illustration of the possible subdivisions of the modular thermal exhaust air purification system of FIG. 1;
  • FIG. 4 an illustration of the possible subdivisions of the modular thermal exhaust air purification system of FIG. 2; and FIGS. 5 to 16 different exemplary embodiments of workpiece processing systems according to the present invention.
  • FIGS. 1 and 3 the basic principle of a first embodiment variant of the modular thermal exhaust air cleaning system (TAR system) used for the workpiece processing system according to the invention, including various optional embodiment variants, is first described in more detail as an example.
  • TAR system modular thermal exhaust air cleaning system
  • the TAR system 10 has a modular design and contains a plurality of burner modules 12 (four in FIG. 1 by way of example) to form at least one exhaust air purification device (see FIG. 3).
  • the burner modules 12 each contain a combustion chamber 14 with a
  • the combustion chambers 14 each have a burner connection flange 18 for connecting the burner 19 and connection flanges 15 for coupling adjacent combustion chambers 14 to one another.
  • the TAR system 10 also has closing flanges 17 for attachment to the outer (right and left in Fig. 1) burner modules 12n for closing off a respective exhaust air cleaning device.
  • the connecting flanges 15 preferably have through openings 16 in order to connect the combustion chambers of the adjacent combustion chambers 14 to form a common combustion chamber, so that gas exchange can take place between the combustion chambers and a common combustion chamber with uniform heating is created.
  • shut-off devices can be provided at the through-openings 16 in order to be able to shut off some or all of the through-openings 16 if necessary.
  • Blocking off the passage opening 16 is also useful if the corresponding connecting flange 15 of the respective burner module 12 is positioned on the outside of the respective exhaust air cleaning device and is therefore also covered with a closing flange 17 .
  • the burners 19 each have a raw gas inlet 21 for introducing a raw gas to be cleaned (exhaust air from the process chamber 42 of the system 40 described later) from a raw gas supply line 20 (coupled to the exhaust air line 48 of the system 40 described later) through the burner 19 into the combustion chamber 14, a Gas inlet 13 for introducing a fuel into the burner 19 and a clean gas outlet 22 for discharging a cleaned clean gas from the combustion chamber 14 through the burner 19 into a clean gas outlet line 23. While in Fig.
  • the raw gas inlets 21 of all burner modules 12 are connected to a common raw gas feed line 20 and the clean gas outlets 22 of all burner modules 12n are connected to a common clean gas discharge line 23, the raw gas inlets and clean gas outlets can alternatively also be connected individually to individual raw gas feed lines or in groups with different common raw gas feed lines or individual ln be connected to individual clean gas outlets or in groups with different common clean gas outlets.
  • the burners 19 preferably each protrude from top to bottom into the respective combustion chamber 14 or its combustion space (top and bottom based on the installed state). This can promote the settling of solids and/or condensates from the exhaust air in the combustion chambers.
  • discharge devices for permanent or phased discharge of the settled solids and/or condensates can be provided in the lower area of the combustion chambers 14 or in an additional module 36 explained later, although not shown.
  • the discharge devices of the burner modules or the corresponding additional Functional elements of the additional module can include, for example, mechanical conveying devices (e.g. screw conveyors), suction devices and/or rinsing devices.
  • the overhead burners 19 can extend slightly vertically downwards into the combustion chambers 14n without affecting their functionality and without reducing the distances between the burners 19 (or elements of the heat transfer systems of the burners specified later, which are preferably present). and without experiencing forces against you.
  • the burners 19 preferably have a round or elliptical or polygonal (e.g. rectangular, hexagonal, octagonal) cross-sectional shape for flow advantages.
  • the burners 19 also preferably each have an integrated heat transfer system 29 for heat transfer from the outflowing clean gas to the inflowing raw gas and the inflowing fuel, i.e. the burners 19 are preferably designed as recuperative burners.
  • the invention is not limited to any specific embodiment of these heat transfer systems 29 .
  • the heat transfer systems for example, protrude far enough into the passage opening that the clean gas to be recirculated can flow back into the heat transfer system.
  • an air baffle can also be arranged at the end of the heat transfer system 29, for example, so that the dwell time of the clean gas in the combustion chamber can be regulated until it re-enters the heat transfer system.
  • the burners 19 of the multiple burner modules 12 can be controlled/operated independently of one another.
  • At least one temperature sensing device e.g. a temperature sensor such as a thermocouple, IR sensor, pyrometer, resistance thermometer
  • a temperature sensor such as a thermocouple, IR sensor, pyrometer, resistance thermometer
  • at least one air quantity detection device 28 for detecting a current exhaust air quantity to be cleaned
  • several valve devices 26 on the burner modules 12 each for selectively opening or closing and optionally also for throttling the respective raw gas inlet 21 and the respective gas inlet 13.
  • Fig. 1 is an example haft only a single temperature sensing device 30 in only one passage opening 16 shown. If a temperature sensing device is present near a burner 19, the respective burner is preferably equipped with a thermocouple for controlling the burner temperature (eg by controlling the fuel).
  • the at least one air quantity detection device 28 is indicated in FIG. 1 by way of example as a flow rate sensor in the raw gas supply line 20; alternatively, the air quantity detection device 28 can also have a plurality of differential pressure sensors across one burner 19 in each case or a differential pressure sensor across all burner modules 12 .
  • the TAR system 10 can additionally have at least one heating device in the area of the common combustion chamber of the multiple burner modules 12n.
  • the heating device can be, for example, a heating burner, an electrical or electromagnetic heating device or a switchable high-temperature heat source of another type.
  • the heater supplies thermal energy to the combustor to preheat the combustor to the minimum required reaction temperature (e.g., about 750°C) to safely/effectively treat the raw gas.
  • the heater also includes safety technology for monitoring the presence of a flame (e.g., a photocell for flame monitoring).
  • the burners 19 of the several burner modules 12n can all be configured more simply and controlled with less effort, since none of them have to be used as heating burners and they also do not require any safety technology to monitor the heating.
  • an exhaust fan 48 is preferably provided to control the exhaust air flow rate from the process chamber 42 of the system 40 in the TAR system 10 and its exhaust air cleaning devices.
  • the modular TAR system 10 can have any number of burner modules 12 .
  • the modularity makes it easy to add additional burner modules or remove individual burner modules as required.
  • the burner modules 12 can in principle be designed for any amount of air, for example 500 Nm 3 /h or 1000 Nm 3 /h per burner module.
  • the explained modular construction of the TAR system 10 enables a particular flexibility of the TAR system 10 and thus also a simple adaptation of the TAR system 10 to flexible structures and/or flexible power requirements of the respective workpiece processing system.
  • the modular TAR system 10 with its multiple burner modules 12 can be variably subdivided. In a first variant (top left in FIG.
  • an overall module device 32 is formed in the TAR system 10, in which all the burner modules 12 of the TAR system 10 are coupled to one another.
  • this one overall module device contains all four burner modules 12, for example.
  • several partial module devices 33 are formed in the TAR system 10, in each of which at least two burner modules 12 of the TAR system 10 are coupled together.
  • two partial module devices 33a, 33b are each formed with two burner modules 12, for example.
  • sub-module devices 33 with more than two burner modules 12 and/or sub-module devices 33 with different numbers of burner modules 12 can be formed in this second variant.
  • a third variant (bottom right in FIG. 3) only individual module devices 34 are formed in the TAR system 10, in each of which an individual burner module 12 of the TAR system 10 is present.
  • a total of four individual module devices 34a, 34b, 34c, 34d are formed in this third variant by way of example.
  • a fourth variant top right in FIG.
  • a partial module device 33 with at least two burner modules 12 and one or more individual module devices 34 each with a single burner module 12 are formed.
  • a partial module device 33a with two burner modules 12 and two individual module devices 34a, 34b can be formed in this fourth variant.
  • the overall module device 32, the partial module device 33 and the individual module device 34 each form a thermal exhaust air purification device.
  • the partial module devices 33 and the individual module devices 34 require less space and can therefore also be integrated into complex system structures in a simple manner be installed in small assembly rooms.
  • the division of the TAR system 10 into separate sub-module devices 33 and/or individual module devices 34 provides a simple possibility for connection to a plurality of exhaust air lines 48 of the workpiece processing system 40, which can even be far apart.
  • the overall module device 32 and the sub-module devices 33 are each suitable for larger amounts of exhaust air to be cleaned than the individual module devices 34 because of their content of several burner modules 12 .
  • the overall module device 32 and the partial module devices 33 offer various advantageous operating modes compared to the conventional non-modular exhaust air cleaning devices. For example, after the pre-aeration, all or only individual burner modules 12 can be activated depending on the preselection, whereupon the individual burners 19 are then controlled in a modulating manner until the minimum air volume or the maximum air volume per burner 19 is reached.
  • one of the burner modules 12 can be put out of operation by the respective valve device 26 first shutting off the fuel inlet and then after flushing the burner 19 for removal the remaining gases from the burner also shuts off the raw gas inlet.
  • the burners 19 of the remaining burner modules 12 then also take over the exhaust air volume of the burner module that has been put out of operation, so that the minimum air volume for proper operation is not fallen short of in each case. If the maximum air volume of all active burner modules 12 is reached in the opposite operating case, one or more additional burner modules that are still in standby mode can be put into operation.
  • the operation of the other burner modules can preferably be prepared from 80-90% of the maximum air volume. Due to the connected combustion chambers 14, however, no pre-ventilation of the new burner modules 12 to be put into operation is required, so that the reaction time to changes in air quantity can be reduced to a minimum. If the number of existing burner modules 12 is not enough to treat the exhaust air flow rate in a reliable manner, the exhaust air flow rate can also be reduced by the exhaust air fan 24 .
  • the mode of operation of the TAR system 10 made possible by the modularity achieves energy savings, since not all burner modules 12 always have to be in operation, and an output adjustment to the current exhaust air flow rate. If the combustion chambers of the combustion chambers 14n are connected via through openings 16, it is also possible to preheat the entire exhaust air cleaning device 32, 33 to the required minimum reaction temperature with only one heating burner 19. The scavenging and pre-aeration processes also take place over the entire combustion chamber, so that the time required can be significantly reduced compared to conventional TAR devices. If energy is required that exceeds the existing energy in the TAR system 10, it is also possible for one or more of the multiple burner modules 12 to be operated with fresh air in order to provide additional energy. The remaining burner modules 12 continue to be operated with the raw gas to be cleaned. This procedure can also be used, for example, to cover the increased energy requirement during a heating process of the workpiece processing system by keeping more burner modules 12 in operation.
  • FIGS. 2 and 4 the basic principle of a second embodiment variant of the modular TAR system, which is used for the workpiece processing system according to the invention, will now be described in more detail by way of example.
  • the TAR system 10 may include one or more non-burner add-on modules 36 .
  • the additional module 36 can be coupled to a burner module 12.
  • the additional module 36 can also be coupled between two burner modules 12 .
  • an additional module 36 is preferably integrated into all exhaust air cleaning devices 32, 33, 34 of the TAR system 10 in all variants of the subdivision of the TAR system 10. So that the burner modules 12 of all individual module devices 34 can each be combined with an additional module 36 even if the TAR system is subdivided into exclusively individual module devices 34, the TAR system 10 can preferably contain just as many additional modules 36 as burner modules 12.
  • the additional modules 36 can in any case be optionally integrated into the respective exhaust air cleaning device 32, 33, 34 of the TAR system 10 in such a way that their interiors are connected to the combustion chambers of the respective adjacent combustion chambers 14 to form a common interior are.
  • the additional modules 36 can be provided with through openings in their connection flanges. If the additional module 36 is connected to a single burner module 12 an individual module device 34 or to an outer burner module 12 of a total module device 32 or partial module device 33 is coupled, a final flange 17 is attached to the outside of the additional module 36 .
  • the additional modules 36 each have at least one additional functional element 37, 38.
  • the additional modules 36 each preferably have a heating device 37 (e.g. electric, inductive, with a burner, etc.) as an additional functional element for heating the combustion chamber of one combustion module 12 or the combustion chambers or the common one Combustion chamber of the multiple combustion modules 12 to a combustion temperature (eg about 750 ° C) for safe / effective treatment of the raw gas.
  • the heating device 37 can also be used with increased output for rapidly heating up the combustion chamber/combustion chambers/common combustion chamber.
  • the (up)heating device 37 also includes safety technology for monitoring the presence of a flame (eg, a photocell for flame monitoring).
  • At least one alternative or further additional function element 38 can, for example, have at least one additional function for the respective exhaust air cleaning device 32, 33, 34 of the TAR system, which is selected from, for example: (a) enlarging a (common) combustion chamber of the combustion chamber(s).
  • Hot gas discharge line which is routed to the clean gas discharge line 23, for example, in order to heat up the clean gas again somewhat after the heat has been emitted in the heat transfer systems 29 of the burners 19, and/or is routed to any heat exchangers of the respective workpiece processing system 40, which also causes overheating of the respective Emission control device 32, 33, 34 can be avoided;
  • discharge of fluids and/or particles e.g.
  • this second embodiment variant corresponds to the first embodiment variant, including the optional or preferred elements/features (partially not shown) explained in relation to the first embodiment variant.
  • the operation of the modular TAR system 10 can preferably also include (i) individual operation of the plurality of partial module devices 33 and/or individual module devices 34; (ii) an individual or group operation of the multiple burner modules 12 of the one overall module device 32 and/or the at least one partial module device 33; and/or regulating the exhaust air flow rate from the process chamber 42 through the at least one exhaust air line 48 to the one or more exhaust air cleaning devices 32, 33a, 33b, 34a, 34b, 34c, 34d.
  • the individual or group operation of the burner modules 12 of the overall or partial module device 32, 33 can be used, for example, to (a) put a number of burner modules 12 into operation according to the amount of exhaust air to be treated; (b) switch off at least one of the plurality of burner modules 12 if an amount of exhaust air falls below a predetermined limit value of the raw gas amount; and/or (c) to operate part of the burner modules 12 with exhaust air supply to the burner 19 and another part of the burner modules 12 with fresh air supply to the burner 19 .
  • the amount of exhaust air flow can be regulated, for example, depending on the dryer utilization (number of bodies in the dryer) and thus depending on the solvent load that is brought into the dryer by the bodies.
  • FIGS. 5 to 16 various embodiments of such a workpiece treatment system with correspondingly adapted exhaust air cleaning devices 32, 33, 34 of the TAR system 10 of the invention will now be explained in more detail by way of example.
  • the basic mode of operation and the detailed construction of such workpiece treatment systems 40 are known to the person skilled in the art and are not the subject matter of the invention, which is why only the rough structure of the various workpiece treatment systems is explained below.
  • FIG. 5 illustrates a workpiece processing system 40 with a central heating concept, in which the process chamber 42 is provided with a single heating circuit 46 which also has a number of circulating air circuits 50 .
  • the TAR system 10 has an overall modular assembly 32 in which all burner modules are coupled together.
  • the dryer exhaust air is removed from the process chamber 42 of the dryer 40 at a suitable point by means of a single exhaust air line 48 .
  • the raw gas inlets 21 of the overall module device 32 of the TAR system 10 are all connected to this one exhaust air line 48 .
  • the clean gas produced in the overall module device 32 is fed to a common clean gas discharge line 23 via the clean gas outlets 22 .
  • the clean gas is used energetically by the clean gas discharge line 23 running into a heating circuit heat exchanger 47 in order to transfer heat to the heating gas of one heating circuit 46 of the system 40 or to introduce at least part of the clean gas into the heating circuit 46 of the system 40 so that the clean gas can be used as a Heating gas of the heating circuit is used.
  • the clean gas discharge line 23 runs into a fresh air heat exchanger 45 in order to transfer residual heat of the clean gas to the flow of fresh air in the at least one fresh air line 44 .
  • the overall module device 32 of the TAR system 10 and the two heat exchangers 45, 47 are preferably arranged between the circulating air circuits 50 of the heating circuit 46 of the dryer 40, so that installation space can be saved.
  • the process chamber 42 contains two dryer zones (e.g. pre-dryer and main dryer), which are each provided with their own heating circuit 46a, 46b and also their own exhaust air line 48.
  • the TAR system 10 has two partial module devices 33a and 33b, in each of which a portion of the burner modules 12 is coupled to one another and which are each coupled to one of the two heating circuits 46a, 46b.
  • the crude gas inlets 21 of the two sub-module devices 33a and 33b of the TAR system 10 are each jointly connected to the exhaust air line 48 of one of the two dryer zones.
  • the clean gases produced in the partial module devices 33a, 33b are fed via the clean gas outlets 22 to one of two common clean gas discharge lines 23, which run into a heating circuit heat exchanger 47 in order to transfer heat to the heating gas of the first or second heating circuit 46a, 46b of the system 40 or introduce at least part of the clean gas into the first or second heating circuit 46 of the system 40 and then run into a fresh air heat exchanger 45 in order to transfer residual heat from the clean gas to the fresh air flow in a first or second fresh air line 44.
  • the partial module devices 33a, 33b are significantly smaller than the overall module device 32 and can thus be arranged even more easily/more compactly between the circulating air circuits 50 of the heating circuits 46a, 46b of the dryer 40.
  • the two clean gas discharge lines 23 can be designed with smaller cross sections due to the air flows reduced by the division and can also be omitted between the two dryer zones of the process chamber 42 .
  • the TAR system 10 may have an overall modular assembly 32 in which all burner modules are coupled together.
  • the raw gas inlets 21 of the overall module device 32 are all connected to an exhaust air line 48 of the process chamber 42 .
  • the clean gas produced in the overall module device 32 is fed to a common clean gas discharge line 23 via the clean gas outlets 22 .
  • the one clean gas discharge line 23 then runs through all the circulating air recuperators 51 in succession in order to supply thermal energy from the clean gas to the circulating air via the respective circulating air heat exchanger 53 before it is reintroduced into the process chamber 42 transfer.
  • a clean gas discharge line 23 can optionally reach a fresh air heat exchanger 45 in order to transfer residual heat from the clean gas to the fresh air flow in the fresh air line 44.
  • the circulating air circuits 50 with their circulating air recuperators 51 are shown only schematically in FIG. 7 and in the figures discussed below, without determining the specific positioning and connections of their components. Even if not shown, the circulating air circuits 50 and their circulating air recuperators 51 can of course also contain other components (e.g. throttle valves, measuring devices, etc.).
  • Fig. 8 also illustrates a workpiece processing system 40 with a classic pure gas heating concept, but in contrast to Fig. 7 with two separate dryer zones 42a and 42b (e.g. pre-dryer and main dryer) in the process chamber 42 (similar to Fig. 6).
  • the TAR system 10 has two sub-module devices 33a and 33b, in each of which a portion of the burner modules 12 are coupled together, and which are each coupled to one of the two dryer zones 42, 42b.
  • the raw gas inlets 21 of the two partial module devices 33a, 33b are each jointly connected to the exhaust air line 48 of one of the two dryer zones 42a, 42b of the process chamber 42.
  • the clean gases produced in the partial module devices 33a, 33b are each fed to a common clean gas discharge line 23 via the respective clean gas outlets 22 .
  • the two clean gas discharge lines 23 then run one after the other through part of the circulating air recuperators 51 in order to transfer heat energy from the clean gas to the circulating air via the respective circulating air heat exchanger 53 before it is reintroduced into the process chamber 42, and then optionally into a fresh air heat exchanger 45 Residual heat of the clean gas to the fresh air flow in the respective fresh air line 44 to be transferred.
  • the TAR system can in this case be built into the dryer system 40 in an even more space-optimized manner thanks to the two separate and smaller partial module devices 33a, 33b.
  • the circulating air recuperators 51 at least partially contain a circulating air mixing chamber instead of the circulating air heat exchanger 53 .
  • Fig. 9 illustrates a workpiece processing system 40 with a classic pure gas heating concept with maximum decentralization of the TAR system 10.
  • the TAR system 10 is divided into several individual devices 34a-d, each of which only has a single burner module 12 and optionally an additional module have 36
  • a partial module device 33 with two burner modules 12 can also be used in some cases instead of a respective individual module device.
  • the raw gas inlets 21 of the individual module devices 34a-d are each connected to one of several exhaust air lines 48 from the process chamber 42.
  • the clean gases produced in the individual module devices 34a-d are fed via the respective clean gas outlets 22 to an individual clean gas discharge line 23, which runs to one of the several circulating air recuperators 51 in each case in order to transfer thermal energy from the clean gas to the circulating air via the respective circulating air heat exchanger 53 before it is recirculated initiation into the process chamber 42 to transfer.
  • the individual clean gas discharge lines 23 can optionally be brought together and optionally run into a fresh air heat exchanger 45 in order to transfer residual heat from the clean gases to the fresh air flow in the fresh air line 44.
  • the clean gas discharge lines 23 could optionally be routed to different fresh air heat exchangers 45 after the circulating air recuperators 51 .
  • hot gas lines can be omitted along the process chamber 42 and the individual module devices 34a-d can be placed next to the circulating air recuperators 51 in an extremely compact and space-saving manner.
  • the circulating air recuperators 51 at least partially contain a circulating air mixing chamber instead of the circulating air heat exchanger 53 .
  • FIG. 10 differs only slightly from the embodiment illustrated in FIG.
  • the individual module devices 34a-d of the TAR system 10 are each integrated directly into one of the several circulating air recuperators 51.
  • the embodiment illustrated in FIG. 11 does not differ schematically from the embodiment illustrated in FIG.
  • the circulating air recuperators 51 contain circulating air mixing chambers 54 instead of the circulating air heat exchangers 53 .
  • the TAR system 10 can have an overall modular device 32 in which all burner modules 12 are coupled to one another.
  • the raw gas inlets 21 of the overall module device 32 are all connected to an exhaust air line 48 of the process chamber 42 .
  • the clean gas produced in the overall module device 32 is fed via the clean gas outlets 22 to one or more clean gas discharge lines 23, via which it is added directly to the circulating air circuits 50.
  • the circulating air circuits 50 therefore do not require a circulating air heat exchanger.
  • a part of the clean gas can optionally also be fed to a fresh air heat exchanger 45 in this embodiment variant.
  • FIG. 13 illustrates a workpiece processing system 40 with a directly heated process chamber 42.
  • the process chamber 42 contains two dryer zones 42, 42b, each with an exhaust air line 48, each of which has a partial module device 33a, 33b of the TAR -System 10 is assigned.
  • FIG. 14 also illustrates a workpiece processing system 40 with a directly heated process chamber 42.
  • the fresh air is introduced into at least part of the burner modules 12 and mixed with the exhaust air from the process chamber 42 and thus indirectly introduced into the process chamber 42 as clean gas via the circulating air circuits 50 .
  • additional fresh air lines can be omitted to save space.
  • the embodiment of the workpiece processing system 40 illustrated in Fig. 15 differs from the embodiment illustrated in Fig. 14 (similar to Fig. 6, 8, 13) in that the process chamber 42 has two separate dryer zones 42a, 42b, each of which has a partial module device 33a , 33b of the TAR system.
  • 16 illustrates an embodiment of the workpiece processing system 40 for rapid heating of the process chamber 42. It corresponds to the embodiment of FIG. 7, with the overall module device 35 of the TAR system at least one additional burner module having been added. This expansion of the TAR system 10 for flexible adaptation to performance requirements can also be carried out in an analogous manner in all other described embodiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Incineration Of Waste (AREA)

Abstract

L'invention concerne une installation de traitement de pièces (40) comprenant une chambre de traitement (42) destinée à recevoir des pièces à traiter, ladite chambre de traitement comportant au moins une conduite d'air frais (44) pour introduire de l'air frais dans la chambre de traitement, et au moins une conduite d'air d'échappement (48) pour évacuer l'air d'échappement à purifier de la chambre de traitement. De plus, la présente installation de traitement de pièces comprend au moins un système de purification d'air d'échappement thermique modulaire (10) ayant une pluralité de modules de brûleur (12) qui présentent chacun une chambre de combustion (14), un brûleur (19) relié à la chambre de combustion, une entrée de gaz brut (21) pour introduire du gaz brut à purifier dans le module de brûleur particulier (12), et une sortie de gaz propre (22) pour évacuer le gaz propre purifié du module de brûleur particulier (12). En fonction de l'exigence de performance et de la structure de l'installation de traitement de pièces (40), le présent système de purification d'air d'échappement thermique modulaire peut être subdivisé de manière flexible en un ou plusieurs dispositifs de purification d'air d'échappement (32, 33a, 33b, 34a, 34b, 34c, 34d) ayant chacun un seul module de brûleur (12) ou au moins deux modules de brûleur (12) couplés l'un à l'autre.
EP22725160.0A 2021-04-19 2022-04-13 Installation de traitement de pièces et procédé de production et de fonctionnement d'une telle installation de traitement de pièces Pending EP4327039A1 (fr)

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DE102021109810.6A DE102021109810A1 (de) 2021-04-19 2021-04-19 Werkstückbearbeitungsanlage und verfahren zum herstellen und betreiben einer solchen werkstückbearbeitungsanlage
PCT/DE2022/100282 WO2022223075A1 (fr) 2021-04-19 2022-04-13 Installation de traitement de pièces et procédé de production et de fonctionnement d'une telle installation de traitement de pièces

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CN (1) CN117203480A (fr)
DE (2) DE102021109810A1 (fr)
WO (1) WO2022223075A1 (fr)

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DE102022131532A1 (de) * 2022-11-29 2024-05-29 Bayerische Motoren Werke Aktiengesellschaft Behandlungsanlage zum Behandeln von Werkstücken und Verfahren zum Behandeln von Werkstücken

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Publication number Priority date Publication date Assignee Title
US4140467A (en) * 1975-06-09 1979-02-20 Kenneth Ellison Convection oven and method of drying solvents
DE3635833A1 (de) * 1986-10-22 1988-05-05 Hilmar Vits Durchlauftrockner fuer materialbahnen, insbesondere offset-trockner und verfahren zum thermischen betreiben eines durchlauftrockners
AT405644B (de) * 1996-09-26 1999-10-25 Andritz Patentverwaltung Verfahren zum indirekt beheizten trocknen von gut, insbesondere von schlämmen
DE29712049U1 (de) 1997-07-09 1997-09-11 August Brötje GmbH, 26180 Rastede Gasheizkessel für den Brennwertbetrieb
DE19936515A1 (de) * 1999-08-06 2001-02-08 Eag Energieanlagen Gmbh Anlage zur Behandlung von Gegenständen
DE19937901C2 (de) 1999-08-11 2001-06-21 Eisenmann Kg Maschbau Trockner für eine Lackieranlage
DE102008012792B4 (de) 2008-03-05 2013-01-03 Eisenmann Ag Trockner für Lackieranlage
EP2230477B1 (fr) * 2009-03-10 2014-12-31 Kronotec AG Installation de séchage de copeaux de bois destinée à sécher des copeaux de bois et procédé correspondant destiné à sécher des copeaux de bois
DE102010062142B4 (de) * 2010-11-29 2015-11-12 Koenig & Bauer Ag Druckmaschine mit einem Trocknersystem sowie Verfahren zum Betrieb eines Trockners einer Bedruckstoff be- und/oder verarbeitenden Druckmaschine
DE102013108412A1 (de) 2013-08-05 2015-02-05 Endegs Gmbh Transportable Anlage und Verfahren zur Verbrennung von unerwünschten Gasen
CN205351348U (zh) * 2016-01-19 2016-06-29 周海波 漆膜烘干室燃气催化无焰加热voc处理系统
DE102016125060B4 (de) 2016-12-21 2023-02-16 Eisenmann Gmbh Vorrichtung zum Temperieren von Gegenständen

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DE112022002203A5 (de) 2024-03-14
CN117203480A (zh) 2023-12-08

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