WO2022008005A1 - Procédé et dispositif permettant la séparation d'impuretés - Google Patents

Procédé et dispositif permettant la séparation d'impuretés Download PDF

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Publication number
WO2022008005A1
WO2022008005A1 PCT/DE2021/100599 DE2021100599W WO2022008005A1 WO 2022008005 A1 WO2022008005 A1 WO 2022008005A1 DE 2021100599 W DE2021100599 W DE 2021100599W WO 2022008005 A1 WO2022008005 A1 WO 2022008005A1
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WO
WIPO (PCT)
Prior art keywords
separating
modules
loading
degree
individual
Prior art date
Application number
PCT/DE2021/100599
Other languages
German (de)
English (en)
Inventor
Rainer Uetz
Oliver SEYBOTH
Thomas Niedermeier
Original Assignee
Dürr 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 Dürr Systems Ag filed Critical Dürr Systems Ag
Publication of WO2022008005A1 publication Critical patent/WO2022008005A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
    • B01D2267/30—Same type of filters

Definitions

  • the present invention relates to a method and a device for separating impurities, for example for separating paint overspray from air laden with paint overspray in a painting process.
  • the method and the device for separating impurities are used in particular in treatment plants, for example coating plants, in the automotive industry or in other industrial plants.
  • Separation modules configured as disposable filters, for example, can be used to separate contaminants from a raw gas stream containing contaminants.
  • Such separating modules are used in particular for the accumulation or filtration or other separating of impurities on separating elements and are disposed of, for example, after a specified period of use and replaced by fresh separating modules.
  • the object of the present invention is to provide a method and a device for separating impurities, in which an optimized use of the separating modules is made possible.
  • This object is achieved according to the invention by a method according to the independent method claim. Furthermore, this object is achieved by a device according to the independent device claim.
  • the method according to the invention for separating impurities from a raw gas stream containing impurities preferably comprises the following: Passing the raw gas stream through a plurality of separation modules arranged parallel to one another;
  • the raw gas flow is preferably carried out through the separation modules in such a way that impurities are separated out on or in the separation modules as they are passed through.
  • the separating modules are preferably arranged parallel to one another in such a way that a total crude gas stream is distributed over a number of separating modules and thus a number of partial gas streams of the crude gas stream flow parallel to one another through the separating modules arranged parallel to one another.
  • the separating modules preferably comprise separating elements designed as filter units, for example pocket filters, deep-bed filters and/or filter mats.
  • the separating modules comprise separating elements designed, for example, as impact separators.
  • An unloaded separating module is to be understood in particular as a separating module which is ready for separating impurities, for example a new and thus not yet contaminated separating module or a processed separating module, for example an emptied or cleaned separating module.
  • an unloaded separating module is preferably a fresh separating module that has not yet been contaminated with impurities.
  • the separating modules used to separate contaminants from the raw gas flow contained in the contaminants are preferably accommodated in a separating module receptacle for accommodating a plurality of separating modules, in particular for accommodating a plurality of identically designed separating modules.
  • the separating module receptacle is arranged and/or formed in particular in a flow guide for guiding the raw gas flow.
  • Replacing a separating module with an unloaded separating module is, in particular, removing a separating module from the separating module receptacle and arranging an unloaded separating module at the place in the separating module receptacle that has become free as a result of the removal.
  • the degree of loading of individual or several or all separating modules is preferably monitored and/or checked.
  • one or more operating parameters of the device for separating impurities are monitored and/or evaluated by means of a control device in order to determine approaching, reaching and/or exceeding the specified maximum loading degree.
  • a control device for example a fan
  • one or more operating parameters of a device for driving the raw gas flow for example a fan
  • one or more operating parameters of a device causing contamination in the raw gas flow for example an application device, in particular a coating device, for example a painting robot, can be monitored and/or evaluated will.
  • a loading degree maximum is in particular a predetermined value for the maximum loading to be achieved in one or more or all of the separating modules, with the value preferably being selected in such a way that the structural integrity of the separating module is retained, in particular for its replacement and/or disposal and/or processing, at the same time, however, premature replacement and thus insufficient utilization of the separation capacity is avoided.
  • a power consumption and/or a speed of a fan and/or a pressure measured before and/or after the fan can be used as operating parameters of a drive device for driving the raw gas flow.
  • this allows conclusions to be drawn about a total degree of loading of all the separating modules through which the raw gas flow driven by the drive device flows.
  • An operating parameter of a device causing the impurities in the raw gas flow is, for example, the position of an application head, in particular a spray head, of an application device, in particular a painting robot.
  • an application quantity and/or application capacity can be an operating parameter of a device causing the contamination in the raw gas flow, it being possible in particular to use position data and/or flow data to draw conclusions about locally different loads on the separating modules with contamination.
  • an individual degree of loading of one or more or all of the separating modules is determined, in particular measured and/or calculated, in order to determine the approaching, reaching and/or exceeding the predetermined loading degree maximum of one or more or all of the separating modules.
  • the individual degree of loading is in particular measured, for example by means of a measuring device, in particular a scale for determining a mass of an individual separating module or of each separating module.
  • a pressure difference measurement can be provided for one or more or all of the separating modules in order to determine a pressure loss in the one, several or all of the separating modules, from which a degree of loading can ultimately be inferred.
  • the individual degree of loading of one or more or all of the separating modules is preferably measured or calculated directly or indirectly.
  • an expected value for the individual loading level of one or more or all separating modules is determined to determine the approaching, reaching and/or exceeding the predetermined loading level maximum of one or more or all separating modules.
  • a contamination load can be determined on the basis of a model or on the basis of empirical values for each position or each space in a separating module receptacle.
  • the contamination load can then be assigned, for example, to time periods and/or process steps (process cycles), so that after a predetermined number of time periods and/or process steps (process cycles) have elapsed, the expected degree of loading of one or more or all of the separation modules can be concluded, with this expected degree of loading can form the expected value.
  • an expected degree of loading is calculated, in particular by counting of process cycles, in particular painting cycles, which have been carried out within a previous service life of each separating module, with preferably an additional weighting of the number of process cycles (number of painting cycles) with the load level increase to be expected for each individual separating module per process cycle, ie the expected per process cycle to the entry Impurities, is made.
  • the individual degree of loading of one or more or all separation modules determined in this way is compared with the specified maximum degree of loading, i.e. with the value of the degree of loading at which one, several or all of the separating modules are considered “loaded” and/or "no longer suitable for further contamination separation " be considered.
  • weighting factors are preferably determined for each individual place and/or each individual position in a separating module receptacle for accommodating the separating modules, in particular determined empirically. For example, a specific number of process cycles can be carried out for a specific period of time during commissioning of the system. After the certain number of process cycles have been carried out, the initially fresh separating modules are then checked for their respective degree of loading, for example by weighing them to determine the amount of impurities in the respective separating module. This allows conclusions to be drawn about the local distribution of the contaminants on the separating modules, as a result of which the weighting factors for determining, in particular calculating, the individual loading levels of one or more or all of the separating modules can be determined.
  • the expected value is used to derive how high the individual degree of loading of one or more or all of the separation modules is after a period of time has elapsed and/or after a number of process steps (process cycles) causing the impurities in the raw gas flow have been carried out, in particular as a function from a position of the respective separating module in an overall arrangement of the separating modules, in particular in a separating module receptacle for accommodating the separating modules.
  • separating modules arranged along a main flow direction of the raw gas flow following an application device are loaded more heavily and/or faster than separating modules arranged laterally offset thereto.
  • this enables a targeted exchange of individual separating modules without also having to exchange those separating modules whose separating capacity has not yet been exhausted.
  • properties and/or operating parameters of the device causing the impurities in the raw gas flow are used for the weighting factors and/or for the expected value, with particular properties of an applied medium, application times, application durations, volume flows and /or mass flows of an applied medium and/or an application efficiency are used to determine an overspray quantity.
  • Information on the surface design and/or the shape of an object to be treated, in particular a workpiece to be coated with a medium, for example a vehicle body, and/or a particle size distribution of a medium mist or medium aerosol generated when the medium is applied can also be used for this purpose.
  • a solids content and/or a solvent composition can be used as properties of an applied medium when determining the expected value and/or the weighting factor.
  • the predetermined loading degree maximum is preferably selected in such a way that the respective separation module is loaded at most to such an extent that it is still mechanically stable, that a storage volume and/or a maximum loading capacity is not exceeded and/or that a specified maximum pressure loss is maintained.
  • a global loading degree maximum is specified for several, in particular all, separation modules, at which a specified maximum pressure loss is exceeded.
  • this point in time can be reached due to the global maximum loading degree being reached without individual separating modules or even one of the separating modules having already reached or has already reached the respective individual maximum loading degree.
  • the individual degree of loading of the one or more separating modules is determined, in particular measured, and that the values obtained in this way are compared with the respective expected value, in particular for correction and/or readjustment of the expected value, in particular of the associated weighting factor, for further separation operation.
  • a damping factor is used for a correction and/or readjustment in order to dampen strong deflections in the measurements and thus exclude the risk of the individual maximum load level being exceeded due to a previously determined large deviation of a measured individual load level from the expected value .
  • a mass of the respective separating module and/or a pressure loss in the respective separating module is measured directly on or in the separating module and/or the separating module receptacle for accommodating the separating modules, in particular continuously during the deposition process.
  • the use and determination of expected values preferably means that the system does not have to be designed in such a complex way in terms of measurement technology.
  • one or more of the following parameters are preferably measured: a) individual masses of the separating modules, in particular all separating modules; and/or b) a total mass of all separation modules; and/or c) a sum of the individual masses of a limited selection of a plurality of separation modules; and/or d) an individual pressure drop in one or more or all of the separation modules; and/or e) a global pressure loss in all separation modules together.
  • each separating module can be clearly identified, for example by means of an individual identification number, so that preferably automatically after measuring the degree of loading to the expected value, in particular the weighting factor, can be concluded at that position or at that place of the separating module receptacle at which the separating module was previously used for separating impurities.
  • each separating module is provided with an RFID tag and/or a barcode, with a measuring station for measuring, in particular weighing, the degree of loading and/or at a changing station for, in particular, automatic Replacing the separating modules on the separating module receptacle and/or on the separating module receptacle itself one or more detectors are provided for identifying and assigning the respective separating module.
  • a measuring station for measuring the degree of loading of a separating module removed from the separating module receptacle to be integrated into a workstation or arranged thereon.
  • a lifting table can be provided, by means of which the separating module can be raised to an ergonomically favorable working height for a worker, the lifting table being able to be provided with load cells, for example, so that the lifting table itself also serves as a measuring station, in particular a weighing station.
  • the predetermined maximum degree of loading is an individual maximum degree of loading of one or more or all of the separation modules.
  • the predetermined maximum degree of loading is a global maximum degree of loading of all separating modules.
  • one or more or all of the separating modules after exceeding the respective individual loading level maximum and/or the global loading level maximum by means of and/or using an automatic and/or mechanical replacement device from a separating module receptacle and are replaced by unloaded separating modules.
  • the described method for separating impurities can be carried out on a device for separating impurities.
  • the present invention therefore also relates to a device for separating impurities, which is set up and designed in particular in such a way that the method according to the invention can be carried out.
  • the device according to the invention for separating impurities from a raw gas stream containing impurities preferably comprises the following: a plurality of separation modules arranged in parallel in terms of flow; a control device for determining when one or more or all of the separating modules is approaching, reaching and/or exceeding a predetermined loading degree maximum.
  • control device is designed and set up in such a way that the method according to the invention can be carried out.
  • the common drive device in particular the common fan generates in particular a main flow, in particular a total raw gas flow, the main flow, in particular the total raw gas stream, for the purpose of separating contaminants, is divided or can be divided between the separating modules arranged parallel to one another.
  • separating modules in particular all separating modules, form a system which is fluidically closed at least in the suction-side area, i.e. downstream of the separating modules belonging to this system, up to the common drive device, in particular the fan, i.e. in particular separated from neighboring systems , is trained.
  • the device preferably comprises one or more measuring devices for determining operating parameters and/or other data, from which a degree of loading of one or more or all of the separating modules can preferably be inferred.
  • the control device is preferably coupled to the one or more measuring devices, in particular for carrying out one or more method steps of the method according to the invention.
  • the separating modules are arranged in the form of a matrix.
  • the device comprises a separating module receptacle which has places or positions arranged adjacent to one another in a single row for accommodating separating modules or places or positions arranged in a matrix form for accommodating separating modules. It can be favorable if the device includes an automatic exchange device for exchanging separating modules. As an alternative or in addition to this, it can be provided that the device comprises a display device on which a worker can show in particular whether and/or which separation module needs to be replaced at what time and/or in what order.
  • a display to indicate that one or more separating modules needs to be replaced can preferably take place in several stages. For example, an advance warning can be given which indicates that an exchange will soon be necessary, it preferably being possible at the same time to indicate how much time is left before the necessary exchange. Furthermore, preferably in a further stage, it can be indicated that a change is urgently required. Finally, an error message can preferably be displayed if an exchange indicated as necessary is not carried out.
  • the display device shows the individual loading levels of individual, several or all separating modules in the form of the currently determined value or in the form of a remaining useful life (remaining service life).
  • a current degree of loading is displayed or can be displayed as a percentage, i.e. based on the individual maximum degree of loading.
  • the device for separating impurities can in particular be part of a treatment system for treating workpieces.
  • the present invention therefore also relates to a treatment system for treating workpieces.
  • the treatment system for treating workpieces preferably comprises a device according to the invention for separating impurities, with a device causing the impurities in the raw gas stream preferably being a treatment device for treating the workpieces, in particular an application device for applying a medium to the workpieces.
  • the contaminants in the raw gas flow are primarily created when the medium is applied to the workpieces.
  • the contamination consists preferably of the applied medium.
  • the impurities are overspray from the applied medium.
  • the treatment system is a painting system for painting vehicle bodies, the application device being a painting device and the impurities in the raw gas stream being formed by paint overspray.
  • the degree of loading in particular to determine an approach, a Reaching and / or exceeding a predetermined degree of maximum loading of one or more or all separation modules, operating parameters of the treatment system are used, for example automatically transferred via an interface to the control device and / or evaluated.
  • estimated values are preferably initially specified for the relevant parameters, in particular for the expected value for the specific impurity input and/or for a target value for the impurity content (maximum degree of loading).
  • the expected value for the specific impurity input can preferably be determined by measuring, for example weighing, and adjusted as soon as the separating modules contain sufficient impurities for a representative measurement.
  • the target value for the impurity content is preferably set relatively high initially. Based on regular visual or other checks of the separator modules, it can subsequently be reduced to a value at which the storage capacity (storage capacity) of the separator modules is just not exhausted, so that in particular no overflow occurs or the mechanical stability of the separator module is impaired will. Should separator modules be changed before the full load condition is reached due to additional criteria, such as differential pressure monitoring must be removed, the impurity content actually achieved can be determined by measuring the degree of loading, in particular by weighing the separating modules after they have been changed, as a point of reference for adjusting the target value for the impurity content.
  • separating module in terms of costs and/or environmental compatibility and/or (further) components of the device for separating
  • a monitoring and/or verification of the degree of loading of individual or several or all separating modules and, in addition, a monitoring and/or checking of a utilization intensity of the (further) components of the device takes place.
  • an intensity of use of one or more drive devices for driving the raw gas flow is determined and/or monitored and/or checked.
  • a current and/or time-averaged and/or increasing power consumption and/or an operating time of the one or more drive devices are determined, in particular monitored and/or checked.
  • a maintenance frequency and/or a maintenance scope and/or a time for the next maintenance are determined, in particular calculated, taking into account the determined usage intensity. Expected operating costs of the respective drive device or of all drive devices can preferably be determined from this.
  • a power requirement for the operation of one or more components of the device for separating, in particular one or more or all of the drive devices can be determined as a function of the degree of loading of one or more or all of the separating modules.
  • the operating costs for example electricity costs and/or maintenance costs
  • an optimization of the environmental balance for example a minimization of the CO2 emissions, can be provided as a parameter for the intensity of use, in particular a minimization of an overall CO2 balance of the device for separating.
  • a control device in particular signaling with one or more or is coupled to all drive devices and that in particular an intensity of use, for example a power consumption, of one or more or all drive devices can be detected or is detected, preferably for determining the expected and/or calculated and/or actual costs for operation and/or maintenance the one or more or all of the drive devices and/or for specifying a maximum degree of loading of one or more or all of the separating modules.
  • the control device is preferably designed and set up in such a way that the aforementioned detection and/or determination and/or specification can be carried out.
  • the device for separating can preferably be controlled by the control device in such a way that criteria for replacing consumables, in particular separating modules, and/or carrying out maintenance and/or cleaning work are adjusted regularly or continuously.
  • the adaptation preferably takes place in such a way that the material and/or personnel and/or financial outlay for operation, for example the costs or the CO 2 emissions, is minimal.
  • One or more criteria are adjusted, for example, by calculating a total effort as a function of specifiable or predetermined input variables, such as a working price for electricity, a price per separation module, personnel costs per maintenance, cleaning or replacement process, disposal costs per separation module and/or costs for one C02 emissions per kWh of electricity consumed or per capture module, possibly including production and/or disposal.
  • specifiable or predetermined input variables such as a working price for electricity, a price per separation module, personnel costs per maintenance, cleaning or replacement process, disposal costs per separation module and/or costs for one C02 emissions per kWh of electricity consumed or per capture module, possibly including production and/or disposal.
  • current operating data and/or archived and/or processed data can be used to adjust one or more criteria.
  • operating data determined in the past are used, which in particular provide information about the change in effort as a function of one or more criteria.
  • Automatically recorded operating data for example continuously recorded differential pressures, and/or operating data that can be entered manually, for example the degree of loading of separating modules after the exchange has taken place, can be used.
  • the additionally used and/or ascertained operating data can be used in particular to derive a need for consumables, personnel costs or (electrical) energy depending on one or more criteria.
  • the operating data archived and/or determined in the past can be the increase in the pressure loss at one or more or all of the separation modules as a function of the number of process cycles, for example the number of painting cycles.
  • This curve can be used, for example, to calculate how often the separator modules would have to be replaced per year if they were replaced at certain differential pressures.
  • the annual energy requirement for overcoming the differential pressure for these scenarios can be calculated, in particular integrated.
  • the requirement is weighted with the predeterminable input variables, for example prices for separating modules, costs for changing the separating module (personnel costs) and the energy price for the electricity.
  • the predeterminable input variables for example prices for separating modules, costs for changing the separating module (personnel costs) and the energy price for the electricity.
  • annual operating costs can be determined as a function of the differential pressure criterion.
  • an optimization calculation is carried out automatically by means of the control device in order to specify that numerical value for the differential pressure as a criterion for changing the separating module at which the annual operating costs are minimal.
  • the maximum degree of loading of one or more or all of the separating modules can then be determined and/or specified. For example, by continuously recording a (differential) pressure increase as a function of the number of painting cycles, it is possible to react immediately to changes in the underlying painting process. For example, the use of a different paint can result in a significantly faster or slower increase in pressure loss, so that more or fewer separating modules are consumed accordingly, the costs of which are offset by the energy costs.
  • the separating modules may be necessary to replace the separating modules at least once only when the maximum permissible differential pressure is reached, in order to determine the rate at which the differential pressure increases as a function of the number of process cycles.
  • the correlation obtained here is used in particular for future determinations and/or calculations.
  • the system controller automatically optimizing the criteria for carrying out the change of consumables, in particular separator modules, and/or carrying out cleaning and maintenance work, it can preferably be made possible for the system to be optimized with regard to certain criteria, for example the annual operating costs , is operated optimally. In this case, in particular, an automatic adjustment can take place in the event of changed operating parameters of the system or changed prices and/or cost factors.
  • FIG. 1 shows a schematic representation of a device for separating impurities from a raw gas stream which is produced when a medium is applied to a workpiece.
  • a treatment system shown in part in Fig. 1 and denoted as a whole by 100, serves to treat workpieces 102.
  • the treatment system 100 is in particular a painting system 104 which comprises an application device 106 embodied as a painting robot for applying a medium, in particular a coating medium, to the workpieces 102 .
  • the workpieces 102 are in particular vehicle bodies.
  • the application device 106 is arranged in particular in an application space 108 in which the workpieces 102 can be exposed to medium.
  • the treatment plant 100 therefore preferably comprises a device 110 for separating impurities.
  • the device 110 for separating impurities is in particular a separating device 112.
  • a gas flow contaminated with impurities, in particular overspray, is referred to as a raw gas flow.
  • the separating device 112 comprises a drive device 114 for driving the raw gas flow, for example a fan 116.
  • the raw gas flow can be sucked off in particular from the application space 108 by means of the drive device 114.
  • a plurality of separating modules 118 of the separating device 112 are preferably arranged between the application space 108 and the drive device 114 .
  • the separating modules 118 are arranged in a matrix form, for example, and the raw gas stream can flow through them parallel to one another.
  • a separating module receptacle (not shown) of separating device 112 serves to receive separating modules 118.
  • the separating modules 118 are provided, for example, with separating elements, in particular special impact separators, filter elements, etc., and enable contaminants, in particular overspray, to be picked up or deposited or otherwise separated from the raw gas flow in order to clean the raw gas flow.
  • the contaminants accumulate over time on the separating modules 118, so that they have to be exchanged after a predetermined loading degree maximum has been reached and demodules have to be replaced with unloaded separating modules.
  • Separating device 112 preferably comprises a control device 120 and one or more measuring devices 122 for monitoring the degree of loading.
  • the one or more measuring devices 122 can be used, for example, to determine pressure differences that result due to different loading levels in the separating modules 118 between the application space 108 and downstream of the separating modules 118 .
  • measuring devices for weighing the separating modules 118 can be provided in order ultimately to deduce the degree of loading of the same.
  • the data obtained from the measuring devices 122 can preferably be evaluated by means of the control device 120 in order ultimately to specify to a worker or an automatic exchange device when and which separation modules 118 approach, reach or exceed a predetermined maximum load level, in order ultimately to initiate an exchange of the same.
  • Each separating module 118 is monitored separately by means of the measuring device 122 or a plurality of measuring devices 122, for example by individually weighing the separating modules 118 in the separating module receptacle of the separating device 112 and/or by measuring the individual pressure loss in each individual separating module 118 Degree of loading of each separating module 118 (individual degree of loading) are closed in order to ultimately be able to determine and display via the control device 120 which separating module 118 is approaching a predetermined maximum loading degree, reaches it and/or exceeds it.
  • the relevant separation module 118 is then replaced.
  • a currently expected degree of loading of each separating module 118 is determined using a model based on empirical values and/or by calculations. For this will In particular, a number of process cycles is recorded and, using a previously determined weighting factor, it is calculated which separating module 118 reaches the respective individual maximum degree of loading after which number of process cycles. After the number of process cycles assigned to each separating module 118 has been carried out and/or by comparing the expected current degree of loading with the maximum degree of loading of the respective separating module 118, the respective separating module 118 is marked as a separating module 118 to be replaced and automatically or manually exchanged for an unloaded separating module 118.
  • the separating module 118 removed from the separating module receptacle is then checked for the actual degree of loading using a scale, for example. Any deviations from the expected value (expected value) can then be taken into account for readjustment and/or correction when determining the future expected values.
  • the positions and sizes of the workpieces 102 and/or the application device 106 and the operating parameters of the application device 106 can be taken into account, for example, so that the expected value reflects in particular which separation module 118 is particularly heavily contaminated with contaminants, in particular overspray.
  • a particularly strong separating module 118 is arranged following the workpiece 102 and/or following the application device 106 (indicated by the hatching of a separating module 118 in Fig. 1), in particular in a main flow direction of the raw gas flow.
  • each separating module 118 is individually marked, for example by means of an RFID tag or a barcode, for example by means of an automatic handling system (not shown) an automatic separating module change and/or a degree of loading measurement, in particular after the removal of the respective separating module 118, can be carried out.
  • the further calculation of the expected values can then preferably be influenced automatically on the basis of the measured values determined, in order ultimately to enable optimized use of all separating modules 118 .
  • each separating module 118 can thus preferably be used for separating impurities until its maximum loading level is reached, without risking mechanical stability or the respective separating module 118 overflowing.
  • a maximum loading degree of one or more or all separation modules 118 varies, in particular optimized in terms of overall costs.
  • the procurement and/or assembly and/or disposal costs of separating modules 118 designed as disposable filters are compared with further costs for the operation of the device 110 .
  • the degree of loading in the separating modules 118 increases with the number of painting cycles.
  • the associated increase in the differential pressure is preferably compensated for by increasing the input of energy by increasing the drive power of the drive device 114, in particular by increasing a fan speed. to keep the volume flow of the raw gas flow constant.
  • the energy costs are compared to the costs of the separation module, including personnel and disposal costs.
  • the optimal pressure loss value for the exchange of a separator module 118 for example, the procurement and/or disposal costs of a separator module 118, the costs for carrying out the separator module change, the working price for the electricity and/or or the number of painting cycles planned per unit of time, in particular per year, is specified.
  • separating modules 118 are arranged parallel to one another, these are usually loaded at different speeds, with the measurable pressure loss caused by the loading being the result of the total loading status or total loading degree of all separating modules 118 . If the specified pressure loss value is reached as a criterion for changing the separator module, only the currently most loaded separator module 118 is exchanged in order to reduce the pressure loss.
  • the separating modules 118 currently used for the separating consequently each have a different load after a different number of painting cycles. A simple assignment of the measurable increase in pressure loss as a function of the number of painting cycles is therefore not possible.
  • An evaluation can therefore preferably be carried out for each separation module 118 and/or for each position of each separation module 118 on the treatment system 100 and/or relative to the application device 106 be performed. For this purpose, it is preferably recorded for each position of each separating module 118, which number of cycles is reached for the separating module 118 before the exchange, if the exchange takes place at a specific pressure loss.
  • the result can be, for example, that a separation module 118 arranged in the middle of a painting zone is replaced after approx. 2000 painting cycles if the replacement takes place at a (differential) pressure loss of 500 Pa, for example, because this separation module 118 is then always the most loaded , while a separating module 118 arranged at the edge of the painting zone is replaced after about 8000 painting cycles, because it has only reached a high load after a higher number of cycles due to the lower paint application per cycle.
  • the number of painting cycles that can be achieved at each separation module position and the total number of painting cycles planned per unit of time, in particular per year, can preferably be determined automatically by means of the control device 120 depending on the (differential) pressure loss specified as a criterion for replacing the separator module. For each separating module position, this results in the number of separating module changes and the number of separating modules 118 required per unit of time, in particular per year. From this, in turn, the total annual costs for the procurement, replacement and disposal of the separating modules 118 can be calculated.
  • an average (differential) pressure loss can be calculated, for example as an annual average, from which the energy costs for driving the raw gas flow can be determined.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Le but de l'invention est de fournir un procédé pour séparer des impuretés d'un flux de gaz brut contenant des impuretés, qui permet une utilisation optimale de modules de séparation. À cet effet, ledit procédé comprend les étapes suivantes consistant à : faire passer le flux de gaz brut à travers plusieurs modules de séparation disposés parallèlement les uns aux autres ; déterminer si le degré de charge d'un ou de plusieurs ou de tous les modules de séparation s'approche d'une valeur maximale prédéfinie, atteint une valeur maximale prédéfinie et/ou dépasse une valeur maximale prédéfinie ; échanger un ou plusieurs modules de séparation contre un ou plusieurs modules de séparation non chargés.
PCT/DE2021/100599 2020-07-09 2021-07-09 Procédé et dispositif permettant la séparation d'impuretés WO2022008005A1 (fr)

Applications Claiming Priority (2)

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DE102020208652.4A DE102020208652A1 (de) 2020-07-09 2020-07-09 Verfahren und Vorrichtung zum Abscheiden von Verunreinigungen
DE102020208652.4 2020-07-09

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WO2022008005A1 true WO2022008005A1 (fr) 2022-01-13

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DE (1) DE102020208652A1 (fr)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060021507A1 (en) * 2004-07-30 2006-02-02 Caterpillar, Inc. Particulate trap with selective blocking element
WO2013083529A1 (fr) * 2011-12-09 2013-06-13 Dürr Systems GmbH Dispositif filtre et procédé de lavage pour gaz brut contenant des surpulvérisations de vernis
DE102013011107A1 (de) * 2013-07-03 2014-08-07 Eisenmann Ag Verfahren zum Betreiben einer Oberflächenbehandlungsanlage und Vorrichtung zum Abscheiden von Overspray
EP3195917A1 (fr) * 2016-01-22 2017-07-26 Schneider Electric Industries SAS Système de filtration d'air pour armoire électrique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222301B4 (de) 2013-11-04 2024-01-25 Dürr Systems Ag Filteranlage zum Abscheiden von Verunreinigungen aus einem Verunreinigungen enthaltenden Rohgasstrom, Lackieranlage und Verfahren zum Abscheiden von Verunreinigungen aus einem Verunreinigungen enthaltenden Rohgasstrom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060021507A1 (en) * 2004-07-30 2006-02-02 Caterpillar, Inc. Particulate trap with selective blocking element
WO2013083529A1 (fr) * 2011-12-09 2013-06-13 Dürr Systems GmbH Dispositif filtre et procédé de lavage pour gaz brut contenant des surpulvérisations de vernis
DE102013011107A1 (de) * 2013-07-03 2014-08-07 Eisenmann Ag Verfahren zum Betreiben einer Oberflächenbehandlungsanlage und Vorrichtung zum Abscheiden von Overspray
EP3195917A1 (fr) * 2016-01-22 2017-07-26 Schneider Electric Industries SAS Système de filtration d'air pour armoire électrique

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