EP4327019A1 - Dispositif de traitement thermique de gaz brut - Google Patents

Dispositif de traitement thermique de gaz brut

Info

Publication number
EP4327019A1
EP4327019A1 EP22719506.2A EP22719506A EP4327019A1 EP 4327019 A1 EP4327019 A1 EP 4327019A1 EP 22719506 A EP22719506 A EP 22719506A EP 4327019 A1 EP4327019 A1 EP 4327019A1
Authority
EP
European Patent Office
Prior art keywords
burner
raw gas
combustion chamber
modules
thermal
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
EP22719506.2A
Other languages
German (de)
English (en)
Inventor
Björn Beeh
Erhard Rieder
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 EP4327019A1 publication Critical patent/EP4327019A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00—Supplementary heating arrangements
    • F23G2204/10—Supplementary heating arrangements using auxiliary fuel
    • F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/50001—Combination of two or more furnaces

Definitions

  • the present invention relates to a thermal raw gas treatment device that can be used, for example, as a thermal exhaust air purification system (TAR) or thermal post-combustion system (TNV).
  • TAR thermal exhaust air purification system
  • TSV thermal post-combustion system
  • Such thermal raw gas treatment devices can be used, for example, to clean pollutants from exhaust air from a workpiece processing plant (e.g. body painting plant), for lean gas combustion (e.g. in landfill or biogas environments, etc.), to generate inert gas, for example for the desorption of Zeolite concentrators, but can also be used for various other purposes or other systems.
  • a thermal exhaust air cleaning (TAR) should usually comply with the applicable statutory
  • TAR systems consist of a burner and a combustion chamber, with the combustion chamber having to be designed very complex and costly for high combustion temperatures (e.g. use of high-quality steel).
  • the conventional TAR systems often have to be replaced/exchanged, which is very complex and expensive.
  • the TAR system must be designed for maximum values, which places considerable demands on the partial load capacity of the systems in the event of major fluctuations in the volume flows and/or their pollutant loads.
  • a combination of the air volume to be treated and the emission values to be complied with that is satisfactory over the entire range is often technically impossible to achieve or can only be achieved with a certain amount of effort in the burner control.
  • the thermal raw gas treatment device has several burner modules, each of which has a combustion chamber with a combustion chamber for treating a raw gas therein, a burner connected to the combustion chamber for burning pollutants contained in a raw gas to be cleaned (e.g. oxidation of hydrocarbons in exhaust air from a dryer system), have a raw gas input for introducing the raw gas to be cleaned through the burner into the combustion chamber and have a clean gas outlet for discharging a cleaned clean gas.
  • the several raw gas inlets of the several burner modules can optionally be connected individually or in groups to a respective raw gas supply line, and the several clean gas outlets of several burner modules can optionally be connected individually or in groups to a respective clean gas outlet line.
  • the multiple burner modules are each coupled to one another via connecting flanges, with at least some of the connecting flanges of the multiple burner modules each having a through opening through which the combustion chambers of the combustion chambers of the respective burner modules coupled to one another are connected to form a common combustion chamber.
  • the proposed modularity of the thermal raw gas treatment device offers several advantages.
  • the modularity enables performance adjustments, maintenance, cleaning and repairs of the TAR system with less effort, since individual burner modules can be added or removed relatively easily and can preferably also be controlled individually.
  • the presence of the multiple burners in the modular device also provides a redundant burner function, which can ensure reliable operability of the TAR system.
  • the individual active burner modules can be swapped over in partial-load operation, i.e. preferably operated alternately, so that the loads on the multiple burners can be evened out.
  • the proposed coupling of the combustion chambers of the combustion chambers to form a common combustion chamber allows gas exchange between the individual burner modules and thus uniform heating.
  • a common combustion chamber for example, the required scavenging / Pre-ventilation done together 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 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 raw gas treatment device for heating the common combustion chamber to the minimum reaction temperature also has at least one heating device (e.g. an electrical or electromagnetic heating device or a switchable high-temperature heat source of another type such as a heating burner) for heating the common combustion chamber of the burner modules coupled to one another , which is coupled in the area of the common combustion chamber, for example, to the combustion chamber of one of the several burner modules.
  • the raw gas treatment device preferably contains only a single heating device, which is sufficient if all the combustion chambers have a common combustion space.
  • the heater includes safety technology for monitoring the presence of a flame (e.g., a flame detection photocell).
  • a flame detection photocell e.g., a flame detection photocell.
  • the several burner modules each also have a gas inlet for introducing a fuel (e.g. natural gas) into the respective burner, so that the raw gas to be cleaned can then be introduced together with the fuel into the combustion chamber of the respective combustion chamber.
  • a fuel e.g. natural gas
  • the multiple burner modules each also have an access for introducing a liquid fuel and preferably a suitable injection device for injecting the liquid fuel into the respective burner.
  • a valve device for selectively opening or closing and optionally also for throttling the respective raw gas inlet is provided at the crude gas inlets of the several burner modules, with the valve devices being controllable independently of one another.
  • a total air volume of the raw gas to be cleaned can be distributed over a suitable number of existing burner modules, so that the individual burners of the burner modules used are each supplied with at least a minimum air volume and at most a maximum air volume for burner operation.
  • gas inlets for fuel such valve devices are preferably also provided for selectively opening or closing and optionally also for throttling the respective gas inlet.
  • the burners of the multiple burner modules can preferably be controlled independently of one another individually or in groups, so that the multiple burners can be put into operation or configured individually or in groups.
  • This measure can, for example, reduce the number of activated burners when the total air volume of the raw gas to be cleaned is lower, so that the individual burners can be operated in favorable operating ranges and energy can also be saved.
  • exhaust air can also be treated in this way without gas admixture, such as when operating with a concentration plant.
  • the function as a heating burner can be reduced to just one burner or at least a reduced number of burners as a result of the combustion chambers connected to one another, as a result of which energy can also be saved.
  • individual burner modules can be switched off and variable power provision can thus be achieved.
  • the following mode of operation is also recommended in this context, especially when operating the raw gas treatment device with a concentrator.
  • the exhaust air from the concentrator which can also be above 25% LEL without the addition of gas, is introduced via the burner of one of the several burner modules, while the burner of another burner module is supplied with a mixture of exhaust air from the concentrator and gas is operated, which can be particularly advantageous in a concentrator that is operated in the so-called split mode.
  • bypass module of the raw gas treatment device energy for heating desorption are made available or the air conditions are regulated in such a way that the recuperated air from the burner has the required temperature for desorption (for zeolite, for example, 200°C to 220°C).
  • the individual burners can also be designed and controlled in multiple stages.
  • the stages can be constructed, for example, from ring-like, segment-like (particularly circular and/or radially segmented) and/or burner elements grouped in patterns and can preferably be controlled independently of one another. Provision can also be made here for the stages to have identical or at least partially different numbers of burner elements.
  • the thermal raw gas treatment device also has at least one air volume detection device for detecting a total air volume of the raw gas to be cleaned.
  • the TAR system can independently adapt the operation to the amount of raw gas to be cleaned.
  • the at least one air quantity detection device can have, for example, differential pressure sensors across one burner in each case or a differential pressure sensor across all burner modules or a flow rate sensor in a common raw gas supply line.
  • the burner modules are carried on a common base frame, with at least one of the several burner modules being mounted on the base frame via a plain bearing. Thermal expansion of the respective burner modules can be compensated for with the help of the slide bearings and the burner modules can be easily pulled apart or pushed together for maintenance, cleaning and repair work.
  • An extension frame is preferably also attached to the base frame, via which the burner modules can be pushed apart by means of the slide bearings, so that the possible range of movement is increased and additional burner modules can be added more easily.
  • the burner of at least one burner module has 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. Preferably all or most Burner of the modular crude gas treatment device designed as a recuperative burner. In this context, the invention is not limited to any specific construction of the heat transfer system integrated in/on the burner.
  • recuperative burners means that an additional measure for heat recovery in the combustion chambers can also be dispensed with, or it can at least be made significantly smaller in relation to an embodiment of the modular raw gas treatment device without recuperative burners.
  • At least one burner module of the plurality of burner modules also has a hot gas outlet for discharging a hot gas from the respective combustion chamber, which can be connected to a hot gas line.
  • This burner module can be referred to as a "bypass module".
  • By discharging hot gas from the combustion chambers it is possible to extract energy from the combustion chamber to avoid overheating, or to supply additional energy from the combustion chamber to the clean gas and/or other heat exchangers (e.g. to heat up the workpiece processing system).
  • Such a bypass module is preferably mounted directly (i.e. without plain bearings) on the base frame, and the burner of such a bypass module can preferably be designed to be less or not recuperative.
  • the burners are each connected to the top of the respective combustion chamber and protrude downwards into the respective combustion chamber. This is particularly advantageous when the burners have integrated heat transfer systems. At high temperatures, the overhead burners can expand slightly vertically downwards into the combustion chambers without affecting their functionality and without changing, in particular reducing, the distances between the burners or elements of the heat transfer systems and without experiencing forces against them. In addition, 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.
  • a discharge device arranged essentially below for the permanent or phased discharge of solids and/or condensates be provided.
  • a discharge device can include, for example, a mechanical conveying device (eg a screw conveyor), a suction device and/or a rinsing device.
  • 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.
  • the discharge device for the permanent or phased discharge of solids and/or condensates is preferably provided in an additional module.
  • At least one of the several burner modules has an injection device for injecting an additive for the cleaning process of the raw gas into the respective combustion chamber.
  • the additive is, for example, an auxiliary for selective non-catalytic reduction (SNCR), for example for cleaning nitrogen-containing raw gases.
  • At least one of the several burner modules has one or more temperature detection devices (e.g. temperature sensors such as thermocouples, IR sensors, pyrometers, etc.) for temperature detection in the respective combustion chamber, in the passage opening to the adjacent combustion chamber and/or nearby the respective burner.
  • the arrangement close to the burner means an arrangement at a distance of preferably about 50 to 500 mm from the end of the respective burner.
  • This temperature measurement can be used, for example, to monitor and/or regulate the operating states of the burners.
  • the burners can preferably also each have a thermocouple for controlling the burner temperature (e.g. by controlling the fuel).
  • the burners of the burner modules each have a substantially circular or elliptical or polygonal (eg rectangular, hexagonal, octagonal) cross-sectional shape, which provides advantages in terms of flow technology, particularly in the case of recuperative burners.
  • the modular thermal raw gas treatment device can also have at least one additional module without its own burner, which is coupled between two of the several burner modules and whose interior is connected via through-openings to the combustion chambers of the adjacent combustion chambers to form a common interior.
  • the additional module has at least one additional function for the raw gas treatment device, which is selected from: (a) increasing the common combustion space of the combustion chambers; (b) Compensating for dimensional changes (in particular thermally induced changes in length) of the device; (c) heat transfer from the clean gas in the common interior space to another fluid outside the device;
  • the thermal raw gas treatment device can also have at least one additional module without its own burner, which is coupled to an exterior of the plurality of burner modules.
  • This additional module also has at least one additional function that is selected from:
  • the raw gas thermal treatment apparatus of the invention can be configured in various structural forms, which are preferable depending on the application.
  • the burner modules each have a substantially rectangular cross-sectional shape such that they can be coupled together along a substantially straight line to form an apparatus having a substantially rectangular overall cross-sectional shape.
  • the burner modules each have a pie-shaped cross-sectional shape so that they can be coupled together along a substantially circular line to form a device having a substantially circular or polygonal overall cross-sectional shape.
  • the invention also relates to a workpiece processing system which, in addition to a process chamber for accommodating workpieces to be processed, the process chamber being connected to at least one exhaust air line for discharging exhaust air to be cleaned from the process chamber, also has at least one thermal raw gas treatment device of the invention as described above, wherein the raw gas inputs of the several burner modules are each connected to one of the at least one exhaust air line.
  • the thermal raw gas treatment device according to the invention can also be used particularly advantageously on workpiece processing systems for drying and/or curing painted/coated/bonded workpieces, especially in the field of continuous dryers, continuous hardening systems, chamber dryers and chamber hardening systems in which painted and/or bonded bodies or body parts can be dried and/or cured, without the invention being restricted to this specific field of application.
  • the thermal crude gas treatment device can, for example, also be used advantageously for lean gas combustion (eg in the landfill or biogas environment, etc.) or for the generation of inert gas, for example for the desorption of zeolite concentrators.
  • the operation of the above-described thermal raw gas treatment device of the invention preferably has one or more of the following steps in addition to the usual operating modes: (a) putting a number of burner modules into operation corresponding to the raw gas quantity to be treated; (b) switching off at least one of the plurality of burner modules if a raw gas quantity falls below a predetermined limit value; (c) operating the burner modules alternately in partial load operation;
  • the common combustion chamber by starting up the burner of one of the several burner modules as heating burners or by operating the other heating device, if available, are supplied with thermal energy in the area of the common combustion chamber in order to reach the minimum operating temperature or to reach it again.
  • a temperature limit minimum operating temperature, preferably an adjustable minimum operating temperature, in particular a minimum reaction temperature
  • FIG. 1 is a cross-sectional view of a modular raw gas thermal treatment device according to a first embodiment of the present invention
  • FIG. 2 shows a perspective side view (with the side left open as viewed from the direction) of the modular raw gas thermal treatment device of FIG. 1 according to a possible embodiment of the present invention
  • FIG. 3 shows a bottom view (with the underside left open, viewed from the direction of view) of the modular raw gas thermal treatment device of FIG. 2;
  • FIG. 4 shows a more detailed representation of the lower part of the perspective side view of the modular thermal raw gas treatment device of FIG. 2;
  • FIG. 7A shows a cross-sectional view of a modular raw gas thermal treatment device according to a second exemplary embodiment of the present invention
  • FIG. 7B is a perspective view of the modular raw gas thermal processor of FIG. 7A; 8 shows an application example of the modular thermal crude gas treatment device of the invention in a workpiece processing system;
  • FIG. 9 shows a cross-sectional view of a modular raw gas thermal treatment device according to a third exemplary embodiment of the present invention.
  • FIG. 10 is a side perspective view (viewed with the side left open) of the modular raw gas thermal treatment apparatus of FIG. 9 in accordance with a possible embodiment of the present invention.
  • the raw gas treatment device is used as a thermal exhaust air cleaning device (TAR), which is why it is often referred to below as a TAR or TAR system.
  • TAR thermal exhaust air cleaning device
  • the thermal exhaust air purification device (TAR) 10 is of modular design and contains a plurality of burner modules 12n (in FIG. 1 four burner modules 12a, 12b, 12c, 12d are contained by way of example).
  • the burner modules 12n each contain a combustion chamber 14n with a combustion chamber in it and a burner 19 that preferably hangs at the top and protrudes vertically downwards into the combustion chamber 14n.
  • the combustion chambers 14n each have a burner connection flange 18 for connecting the burner 19 and connection flanges 15 for coupling adjacent combustion chambers 14n and/or end flanges 17 on the outer burner modules 12n to close off the TAR 10.
  • the connecting flanges 15 have through openings 16 in order to connect the combustion chambers of the adjacent combustion chambers 14n to form a common combustion chamber , so that a gas exchange can take place between the combustion chambers and thus a common combustion chamber with even heating is created.
  • the passage openings 16 shut-off devices (E.g. in the form of flaps or slides) to be able to shut off part or all of the through-openings 16 if necessary.
  • the burners 19 each preferably protrude from top to bottom into the respective combustion chamber or its combustion space. This can promote the settling of solids and/or condensates from the raw gas in the combustion chambers.
  • discharge devices are preferably provided in the lower region of the combustion chambers 14n for permanent or phased removal of the deposited solids and/or condensates, although not shown.
  • the discharge devices can include, for example, mechanical conveying devices (e.g. screw conveyors), suction devices and/or rinsing devices.
  • the overhead burners 19 can expand slightly vertically downwards into the combustion chambers 14n at high temperatures without impairing their functionality and without increasing the distances between the burners 19 (or elements of the heat transfer systems 29 of the burners 19, which are specified later and are preferably present). to reduce and experience without forces against you.
  • the burners 19 are preferably designed as recuperative burners and each have a raw gas inlet 21 for introducing a raw gas to be cleaned from a raw gas supply line 20 through the burner 19 into the combustion chamber 14n, 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 14a through the burner 19n into a clean gas discharge line 23.
  • the burners 19 can optionally also have an access for introducing a liquid fuel, preferably combined with a suitable injection device for injecting the liquid fuel into the respective burner.
  • the burners 19 preferably have a round or elliptical or polygonal (for example, rectangular, hexagonal, octagonal) cross-sectional shape for fluidic advantages.
  • the burners 19 also 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.
  • the invention is not limited to any specific embodiment of this heat transfer system 29 .
  • the heat transfer system 29 protrudes, for example, so far into the passage opening (eg about 50 to 100 mm) that the clean gas to be recirculated can flow back into the heat transfer system.
  • the raw gas inputs 21 of the burner modules 12n are all connected to a common raw gas supply line 20 in FIG. 1, for example; depending on the application, the raw gas inputs 21 can alternatively also be connected individually or in groups with two or more raw gas supply lines.
  • At least one combustion chamber 14d of the plurality of burner modules 12n can optionally also have a hot gas outlet 24 to which a hot gas discharge line 25 can be connected.
  • the hot gas discharge line 25 is routed to the clean gas discharge line 23, for example, so that the clean gas is slightly heated again after the heat has been emitted in the heat transfer systems 29 of the burners 19.
  • the hot gas discharge line 25 and the clean gas discharge line 23 can be equipped with flow controllers 27a, 27b for controlling the temperature of the clean gas.
  • the hot gas discharge line 25 can also be routed to any heat exchangers of the respective workpiece processing system.
  • the burner module 12d with the combustion chamber 14d with hot gas discharge can be referred to as a bypass module, for example.
  • the burner 19 of the bypass module 12d can also be designed to be less recuperative or non-recuperative, or the bypass module 12d can also be designed without its own burner.
  • the burners 19 of the multiple burner modules 12n can be controlled/operated independently of one another.
  • At least one temperature detection device e.g. a temperature sensor such as a thermocouple, IR sensor, pyrometer, resistance thermometer
  • at least one temperature detection device 34a in a combustion chamber 14n for detecting a temperature in the Combustion chamber, at least one temperature detection device 34b in a through opening 16 for detecting a temperature in the combustion chamber
  • at least one air volume detection device 28 for detecting a current crude gas air volume to be cleaned
  • several valve devices 26n the burner modules 12n in each case for selectively opening or closing and optionally also for throttling the respective raw gas inlet 21 and the respective gas inlet 13.
  • the temperature detection devices 34a, b, c are only shown individually in Fig. 1 for the sake of better clarity, but are preferably provided several times .
  • the 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 can also have a plurality of differential pressure sensors across one burner in each case or a differential pressure sensor across all burner modules. If a temperature detection device 34c is present near a burner 19, as indicated in FIG. 1, the respective burner 19 is preferably equipped with a thermocouple 62 for controlling the burner temperature (eg by controlling the fuel).
  • the individual burners 19 can also be designed and controlled in multiple stages.
  • the stages can be constructed, for example, from burner elements that are ring-like, segment-like (particularly circular and/or radially segmented) and/or arranged in patterns, and can preferably be controlled independently of one another. Provision can also be made here for the stages to have identical or at least partially different numbers of burner elements.
  • the modular TAR 10 can have any number of burner modules 12n.
  • the modularity makes it easy to add additional burner modules or remove individual burner modules as required.
  • the burner modules 12n can in principle be designed for any amount of air.
  • other additional modules can be added if required, as described later with reference to FIGS. 5A to 6D.
  • the burners 19 are preferably each connected to the top of the combustion chambers 14n and project downward into the combustion chambers 14n or their combustion chambers. It is also shown in Fig. 2 that the burner modules 12n are carried on a base frame 30, which also has an extension frame 32 can be added. As shown in FIG. 4, the burner modules 12a, 12b, 12c, 12e are each mounted on the base frame 30 via a plain bearing 31, while the one bypass module 12d is attached directly to the base frame 30. Thermal expansions of the burner modules 12n can be compensated for by the slide bearings 31 .
  • the burner modules 12n can be pulled apart or pushed together more easily by the slide bearings 31, for example for maintenance, cleaning and repair work, which is also supported by the extension frame 32.
  • the sliding bearings 31 and the extension frame 32 also make it easier to remove or exchange individual burner modules from the TAR 10 or to add additional burner modules to the TAR 10.
  • one of the several burner modules 12n in particular the outer burner module on the edge of the TAR 10 can optionally be equipped with an injection device 35 for injecting an additive into the respective combustion chamber 14n or the common combustion chamber .
  • the additive for example, the cleaning of the raw gas in the TAR 10 can be supported / promoted, especially if the raw gas contains specific pollutants or pollutant concentrations.
  • liquid fuels or organically loaded liquids can also be added.
  • TAR according to the invention can also contain further special features or omit some of the special features explained above.
  • the burner modules 12n can be designed for different raw gas air quantities, for example between 100 and 2000 Nm 3 /h, preferably between 250 and 1500 Nm 3 /h, particularly preferably for example for about 500 Nm 3 /h or about 1000 Nm 3 /h per burner module .
  • the total air volume of the TAR 10 is of course a multiple of the air volume per burner module 12n.
  • all or only individual burner modules 12n are activated, depending on the preselection.
  • the control of the individual burners 19 is then modulated until the Minimum air volume or the maximum air volume per burner 19 is reached. For example, if the minimum air volume of one or more burners 19, which is detected using the air volume detection device 28, is not reached, one of the burner modules can be put out of operation by first shutting off the respective valve device for the fuel inlet and then after flushing the burner 19 to remove the remaining Gases from the burner also shuts off the raw gas inlet.
  • the burners 19 of the remaining burner modules 12n then also take over the raw gas 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.
  • 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 14n, however, no pre-ventilation of the burner modules 12n to be newly put into operation is required, so that the reaction time to changes in air quantity can be reduced to a minimum.
  • This mode of operation of the TAR 10 which is made possible by the modularity, achieves energy savings and a performance adjustment to the current raw gas air quantity, since not all burner modules always have to be in operation.
  • the combustion chambers 14n By connecting the combustion chambers 14n to form a common combustion chamber, it is possible to preheat the entire TAR 10 to the required minimum reaction temperature using only one burner 19 as a heating burner. Even if the minimum reaction temperature in the common combustion chamber is not reached or is undershot, the common combustion chamber can be supplied with thermal energy by starting up a burner as a heating burner 19 in order to reach or maintain the minimum reaction temperature again. The scavenging and pre-aeration processes also take place across the entire combustion chamber, so that the time required can be significantly reduced compared to conventional TAR systems.
  • the multiple burner modules 12n can be operated with fresh air in order to provide additional energy.
  • the remaining burner modules 12n continue to be operated with the raw gas to be cleaned. This procedure can also be used, for example, to reduce the increased energy requirement during a heating process of the workpiece processing system by keeping more in operation Cover burner modules 12n.
  • hot gas for heating the dryer can be taken from the TAR 10 in particular through the bypass module 12d.
  • the operation of the TAR 10 can preferably have one or more of the following steps in addition to the usual operating modes of conventional TARs: (a) commissioning of a number of the burner modules 12n corresponding to the raw gas quantity to be treated; (b) switching off at least one of the plurality of burner modules 12n if a crude gas quantity falls below a predetermined limit value; (c) operating the burner modules 12n alternately in partial load operation; (d) purging the common combustion chamber of adjacent combustors 14n; (e) pre-aerating the common combustion chamber of adjacent combustors 14n; (f) after a burner module 12n has been switched off, flushing of the respective burner 19 with air without fuel admixture; and (g) operating some of the burner modules 12n with a supply of raw gas to the burner 19 and another part of the burner modules 12n with a supply of fresh air to the burner 19.
  • FIGS. 5A to 5F several different execution variants of the modular thermal crude gas treatment device described above will now be explained.
  • the same or corresponding components of the device are identified with the same reference numbers as in FIG. Even if a few elements/features (e.g. 34c, 62) of the exemplary embodiment of FIGS. 1-4 are not shown in FIGS. 5A-F for the sake of better clarity, these are of course all present or can be used optionally in combination with these exemplary embodiments .
  • the thermal raw gas treatment devices 10 of these variants each contain an additional module 36n without its own burner, which is coupled between two of the several burner modules 12n.
  • the connection flanges of the additional modules 36n are each provided with through-openings 16, so that the interior spaces of the additional modules 36n are connected to the combustion spaces of the adjacent combustion chambers 14n and thus form common interior spaces.
  • the additional module 36a contains no special additional elements, but only an interior space through which the volume of the common Same combustion space of the combustion chambers 14n of the multiple burner modules 12a-d is expanded.
  • one or more compensation elements 37b are provided on the walls of the additional module 36b in the direction of connection between the two adjacent burner modules 12c and 12d, which can compensate for a thermally induced change in the dimensioning of the burner modules 12n, so that the overall size of the device 10 can be kept essentially the same even under high temperature loads.
  • the additional module 36c contains a heat exchanger element 37c, via which at least part of the heat from the clean gas in the common interior space of the plurality of burner modules 12a-d and the additional module 36c can be transferred to any other fluid outside the device 10.
  • a heat exchanger element 37c via which at least part of the heat from the clean gas in the common interior space of the plurality of burner modules 12a-d and the additional module 36c can be transferred to any other fluid outside the device 10.
  • intermediate thermal oil circuits for heating systems, ORC working media, process gases (e.g. drying air, desorption air, etc.) or the like can be heated in this way.
  • the additional module 36d contains several heat storage and/or catalyst elements 37d, which can absorb part of the thermal energy from the clean gas in the common interior space and/or have a catalyst function for treating the raw gas.
  • the heat thus stored can be used, for example, for alternative or additional regenerative processes, to improve the restart properties of the device 10 and the like.
  • the additional elements 37d of this additional module 36d can also be used to adsorb or absorb pollutants (e.g. CO2) from the shared interior.
  • pollutants e.g. CO2
  • the additional module 36e contains at least one discharge element 37e in the lower area for discharging fluids and/or particles (e.g. solids, condensates) from the common interior space. This discharge can be used to clean the modular TAR 10 and to treat the raw gas to be cleaned more effectively.
  • fluids and/or particles e.g. solids, condensates
  • the additional module 36f contains an injection element 37f for injecting additives into the common interior space. That Additive is, for example, an auxiliary for selective non-catalytic reduction (SNCR), for example for cleaning nitrogenous raw gases.
  • SNCR selective non-catalytic reduction
  • additional injection elements on the burner modules 12n can be dispensed with, particularly if the combustion chambers of all the burner modules 12n are connected to one another and to the interior of the additional module 36f to form a common interior.
  • additional module 36n While only one additional module 36n is coupled into the modular thermal raw gas treatment device 10 in FIGS. 5A to 5F, two or more additional modules 36n can optionally also be coupled into the device between two burner modules 12n. In the case of several additional modules 36n, these can contain different or the same additional functions for the device 10. While in FIGS. 5A to 5F the additional modules 36n each contain only one additional function, additional modules with several additional functions can optionally also be used. In addition to the additional functions described with reference to FIGS. 5A to 5F, the person skilled in the art will also recognize further additional functions for the modular device 10 which can be provided by additional modules.
  • the additional module can also include a hot gas discharge line, so that none of the burner modules 12n has to be designed as a bypass module.
  • FIGS. 6A to 6D several different further embodiment variants of the modular thermal raw gas treatment device described above will now be explained.
  • the same or corresponding components of the device are again identified with the same reference numbers as in FIG.
  • the thermal raw gas treatment devices 10 of these embodiment variants each contain an additional module 38n without its own burner, which is coupled to an outer one of the several burner modules 12n.
  • these outer additional modules 38n can have the same additional functions as the inner additional modules 36n described above.
  • the additional module 38a does not contain any special additional elements, but only an interior space, through which the volume of the common combustion chamber of the combustion chambers 14n of the plurality of burner modules 12a-d is expanded.
  • the additional module 38b contains a heat transfer element 39b which protrudes into the common combustion chamber of the burner modules 12n in order to transfer at least part of the heat from the clean gas to some other fluid outside the device 10.
  • the additional module 38c contains an injection element 39c, which protrudes into the combustion chambers of the plurality of burner modules 12n in order to inject additional medium.
  • the additional module 38d contains a discharge element 39d, which projects into the combustion chambers 14n of the burner modules 12n in the lower region in order to discharge fluids and/or particles (e.g. solids,
  • embodiment variants of the TAR 10 according to the invention can optionally also have at least one inner additional module 36n and at least one outer additional module 38n.
  • the inner and outer additional modules 36n, 38n can optionally contain different or the same additional functions for the TAR 10. As shown in FIGS.
  • the burner modules 12n in the above-described exemplary embodiment and also in the above-described variants are each structured in a substantially rectangular cross-sectional shape and are connected via the connecting flanges 15 along a substantially straight line (each left-right- Direction in the figures) coupled together.
  • FIGS. 7A and 7B a second exemplary embodiment of the modular thermal raw gas treatment device according to the invention will now be explained.
  • the burner modules 12n each have a cross-sectional shape like a piece of cake, so that they can be coupled to one another via the connecting flanges along a substantially circular line.
  • the burner modules 12n in this pie-like cross-sectional shape have a wider outside and a narrower inside and correspondingly inclined connecting flanges 15 between adjacent burner modules.
  • a fluid channel 11 can be integrated centrally between the burner modules 12n, so that heat can be transferred to a fluid flowing through it.
  • the burner modules 12n can also be mounted on guide rails 33, via which they can be displaced in the radial direction.
  • the structure and the mode of operation of the burner modules 12n are essentially unchanged relative to the above exemplary embodiment in FIGS. 1 to 6, with the exception of the structural shape. I.e. the burner modules 12n also have combustion chambers and burners with a common combustion chamber and optionally at least one additional internal module. With regard to further details and possible variants, reference is simply made to the above explanations for FIGS. 1 to 6 in order to avoid extensive repetition.
  • the raw gas treatment device 10 also has a heating device 60 (or alternatively a number of heating devices) in the region of the common combustion chamber of the number of burner modules 12n.
  • the heating device 60 is coupled, for example, to the combustion chamber 14n of an outer (on the left in FIG. 9) burner module 12a.
  • This heating device 60 can be, for example, a heating burner, an electrical or electromagnetic heating device or a switchable high-temperature heat source of a different type.
  • Heater 60 provides thermal energy to the common combustor to preheat the common combustor to the minimum required reaction temperature (eg, about 750°C) for safe/effective processing of the raw gas.
  • the raw gas treatment device 10 preferably contains only a single heating device 60, which is sufficient due to the common combustion chamber. As indicated in FIG. 9, this heating device 60 preferably contains safety technology 61 for monitoring the presence of a flame (eg a photocell for flame monitoring).
  • this heating device 60 allows the burners 19 of the multiple burner modules 12n to 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. While the common combustion chamber is being heated by the heating device 60, all the burners 19 of the burner modules 12n remain switched off.
  • this third exemplary embodiment of FIGS. 9-10 corresponds to the first exemplary embodiment 1-4 and can also be configured with all the variant embodiments of FIGS. 5A-F and 6A-D and also have the other variant structural form of FIGS. 7A-B.
  • the modular thermal raw gas treatment device 10 of the invention described above can advantageously be used, for example, for workpiece treatment systems, in particular for drying and/or curing painted/coated/glued workpieces (e.g. bodies or body parts).
  • the modular TAR 10 can, for example, also be used for lean gas combustion (e.g. in landfill or biogas environments, etc.) or to generate inert gas for desorption of zeolite concentrators or similar applications.
  • FIG. 8 shows an example of a possible use of the thermal raw gas treatment device according to the invention as a TAR system in a workpiece treatment system 40 for drying and/or curing painted/coated/glued workpieces (e.g. bodies or body parts).
  • the device 10 according to the invention can also be used advantageously in other structures of workpiece processing systems 40 .
  • the workpiece processing system 40 has a process chamber 42 with a plurality of zones for receiving workpieces to be processed, the process chamber 42 being connected to at least one fresh air line 44 for introducing fresh air into the process chamber.
  • the process chamber 42 is designed with two zone groups and is therefore provided with two exhaust air lines 48 for discharging exhaust air to be cleaned from the two process chamber zone groups.
  • the process chamber 42 is connected to a plurality of circulating air circuits 50 for removing and reintroducing circulating air from/into the process chamber.
  • Two modular thermal raw gas treatment devices 10 of the invention can be used in this workpiece processing system 40, the raw gas inlets 21 n of which are each connected to one of the two exhaust air lines 48 .
  • the circulating air circuits 50 are preferably each equipped with a circulating air recuperator 51 in which a fan 52 for conveying the circulating air and a circulating air heat exchanger 53 are contained.
  • the clean gas outlets 22n of the two modular TARs 10 are each connected to a clean gas discharge line 23, which runs through a group of circulating air recuperators 50, in which heat is transferred from the clean gas to the circulating air, and optionally also through a fresh air heat exchanger 45, in which Residual heat is transferred from the clean gas to the fresh air.
  • the circulating air recuperators 51 can alternatively also contain a circulating air mixing chamber, via which at least part of the clean gas is mixed with the circulating air flow.
  • the circulating air circuits 50 with their circulating air recuperators 51 are shown only schematically in FIG without showing other possible components (e.g. throttle valves, measuring devices, etc.).
  • TAR 10 only one TAR 10 or more than two TARs 10 can be used in the workpiece processing system 40. In the case of several TARs 10, these can be equipped with the same or different numbers of burner modules.
  • the thermal raw gas treatment device 10 can in principle be used for any applications/treatments/plants.
  • the thermal raw gas treatment device can be used in particular as a thermal exhaust air purification device (TAR) or as a thermal post-combustion system (TNV), for example for cleaning pollutants from process air by oxidation.
  • TAR thermal exhaust air purification device
  • TSV thermal post-combustion system

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)

Abstract

L'invention concerne un dispositif de traitement thermique de gaz brut (10) qui peut être utilisé par exemple en tant que système de purification d'air refoulé thermique (TAR) ou système de post-combustion thermique (TNV), présentant avantageusement de multiples modules de brûleurs (12n), chacun d'eux ayant une chambre de combustion (14n), un brûleur (19) qui est relié à la chambre de combustion (14n) afin de brûler les polluants contenus dans un gaz brut à purifier, une entrée de gaz brut (21) pour introduire le gaz brut à filtrer dans la chambre de combustion (14n) à travers le brûleur (19), et une sortie de gaz purifié (22) pour évacuer un gaz purifié, la pluralité de modules de brûleur (12n) étant accouplés entre eux par l'intermédiaire de brides de raccordement (15) respectives, et au moins une partie des brides de raccordement (15) de la pluralité de modules de brûleur (12n) présentant une ouverture de passage (16) respective pour raccorder les chambres de combustion des modules de brûleur (12n) accouplées entre elles pour former une chambre de combustion commune.
EP22719506.2A 2021-04-19 2022-04-13 Dispositif de traitement thermique de gaz brut Pending EP4327019A1 (fr)

Applications Claiming Priority (2)

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DE102021109809.2A DE102021109809A1 (de) 2021-04-19 2021-04-19 Thermische rohgasbehandlungsvorrichtung
PCT/DE2022/100281 WO2022223074A1 (fr) 2021-04-19 2022-04-13 Dispositif de traitement thermique de gaz brut

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EP4327019A1 true EP4327019A1 (fr) 2024-02-28

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EP (1) EP4327019A1 (fr)
CN (1) CN117295911A (fr)
DE (2) DE102021109809A1 (fr)
WO (1) WO2022223074A1 (fr)

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WO2024145873A1 (fr) * 2023-01-05 2024-07-11 李季砡 Appareil d'incinération sans cheminée
DE102023107754A1 (de) 2023-03-28 2024-10-02 Dürr Systems Ag Konstruktion und verfahren zum überwachen einer brennervorrichtung

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US4249372A (en) * 1979-07-16 1981-02-10 General Electric Company Cross-ignition assembly for combustion apparatus
US5240403A (en) * 1992-09-01 1993-08-31 Moco Thermal Industries, Inc. Regenerative thermal oxidation apparatus and method
US5643544A (en) * 1995-04-28 1997-07-01 Applied Web Systems, Inc. Apparatus and method for rendering volatile organic compounds harmless
NL1003624C2 (nl) 1996-07-17 1998-01-21 Holding J H Deckers N V Gelede verwarmingsketel en verwarmingsinrichting, voorzien van een dergelijke ketel.
DE29712049U1 (de) 1997-07-09 1997-09-11 August Brötje GmbH, 26180 Rastede Gasheizkessel für den Brennwertbetrieb
DE102005021500A1 (de) 2005-05-10 2006-11-16 Uhde Gmbh Verfahren zur Aufheizung eines Dampf-/Erdgasgemisches im Bereich eines Gassammelrohres nach einem Primärreformer
DE102008012792B4 (de) 2008-03-05 2013-01-03 Eisenmann Ag Trockner für Lackieranlage
DE102008047037B3 (de) 2008-09-13 2009-11-26 Robert Bosch Gmbh Anordnung und Verfahren zur Überwachung einer Feuerungsanlage
DE102013108412A1 (de) 2013-08-05 2015-02-05 Endegs Gmbh Transportable Anlage und Verfahren zur Verbrennung von unerwünschten Gasen
DE102017113308A1 (de) 2017-06-16 2018-12-20 Rudolf Leicht Hocheffizientes Rekuperations-Gasbrennersystem in kostengünstiger modularer Bauweise für Wärmekraftmaschinen, Öfen und Herde in Gastronomie und Kleingewerbe

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DE102021109809A1 (de) 2022-10-20
DE112022002202A5 (de) 2024-03-14
WO2022223074A1 (fr) 2022-10-27
CN117295911A (zh) 2023-12-26

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