EP3863751A1 - Procede et dispositif de gestion d'un dispositif de traitement de gaz vicie - Google Patents
Procede et dispositif de gestion d'un dispositif de traitement de gaz vicieInfo
- Publication number
- EP3863751A1 EP3863751A1 EP19783079.7A EP19783079A EP3863751A1 EP 3863751 A1 EP3863751 A1 EP 3863751A1 EP 19783079 A EP19783079 A EP 19783079A EP 3863751 A1 EP3863751 A1 EP 3863751A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas treatment
- concentration
- gas
- treatment device
- stale
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1412—Controlling the absorption process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Definitions
- the present invention is in the field of odor treatment in particular by gas-solid adsorption.
- the invention relates to a method for managing a device for treating stale gas.
- the invention also relates to a device for the treatment of spent gas, the management process for which optimizes consumables, while taking into account the olfactory impact on the environment, of the emission of a stale gas. .
- the invention can be applied to the fields of waste and wastewater treatment and to any industrial site which emits odors.
- Wastewater treatment plants, waste treatment plants and certain industrial installations can generate odorous compounds which can induce odor nuisance episodes of different importance in a certain neighborhood depending on the atmospheric dispersion conditions of odorous compounds .
- the odorous components are channeled by ventilation networks and then treated by deodorization units.
- the characteristics of the air flows are in particular: the type of odorous molecules contained in the air flows, the concentration of these molecules in the air flow as well as the flow rate of the air flow.
- o adsorption either as a main treatment process or as a finishing process after chemical washing or bio-filtration for example.
- the process by adsorption on porous media, using in particular active carbon, is particularly effective in the elimination of a large majority of odorous molecules and volatile organic compounds, otherwise called VOCs, present in a flux of air.
- the principle of adsorption treatment is to circulate the air flow to be treated through a bed composed of an adsorbent medium in which the odor molecules are retained. As it is used, the adsorbent medium becomes saturated and becomes less and less able to adsorb odorous molecules. It is therefore advisable to replace the adsorbent medium when its adsorption capacity is no longer sufficient. The adsorbent medium is then replaced by a new charge.
- the reprocessing of the used adsorbent medium must then be ensured by waste treatment methods.
- the medium can alternatively be regenerated, but the regeneration processes consume energy and are therefore not very economical.
- the Azurair TM Scan product marketed by Suez International, enables real-time monitoring of the olfactory impact of an odor-emitting site on its environment.
- the Azurair TM Scan product includes a platform for modeling the atmospheric dispersion of odorous molecules, which can optionally be associated with a network of ambient air sensors, in particular H 2 S and NH 3 sensors.
- the Azurair TM Scan product associated with a network of ambient air sensors makes it possible to know in real time the emission data of odorous molecules.
- Tool for Predicting and Monitoring the Impact of Wastewater Treatment Plants on Odor I. Isaac-Ho Tin Noe, F. Siino, C. Bara, Y. Urvoy, C. Haaser, A. Tripathi, L. Ait Hamou, T. Mailliard - NOSE 2010 - 22-24 September 2010 Florence, Italy, AIDIC Publications;
- Tool for Predicting and Monitoring the Impact of Wastewater Treatment Plants on Odor I. Isaac-Ho Tin Noe, F. Siino, C. Bara, Y. Urvoy, C. Haaser, A. Tripathi, L. Ait Hamou, T. Mailliard - NOSE 2010 - 22-24 September 2010 Florence, Italy, AIDIC Publications.
- One objective of the invention is in particular to propose a rationalization of the use of a deodorization unit for an air flow comprising odorous molecules as a function of a risk of olfactory impact on the environment. reason of the emission site of this so-called stale air flow.
- the present invention provides a method for managing a device for treating stale gas.
- the stale gas treatment device notably comprises:
- a gas treatment unit possibly comprising a dispersion chimney
- Said method for managing the gas treatment device comprises at least the following steps: • a step of taking into account by at least one processor of the computer of gas pollutant concentration forecasts at at least one point in a predefined geographical area;
- the method according to the invention makes it possible to treat the odorous air only when the weather conditions are not favorable to a sufficient dispersion of the odors emitted.
- OPEX waste production and equipment maintenance time will be reduced.
- the method for managing a stale gas treatment device according to the invention can also comprise:
- the atmospheric dispersion model of the stale gas molecules over the predefined geographic area takes into account the topography of said predefined geographic area, such as its relief, the layout of the area, i.e. the presence of buildings , dwellings, woods, rivers. Topographic elements can indeed have an impact in terms of atmospheric dispersion of stale air molecules, but also on more or less important tolerances vis-à-vis air containing odorous molecules.
- the method for managing a stale gas treatment device according to the invention can also comprise:
- the method thus makes it possible to close the bypass pipe if proven pollution is detected when it has not been foreseen, or planned with less intensity.
- the use of sensors makes it possible to add additional security to the method according to the invention.
- the reference value for the concentration of gaseous pollutants, or odorous gases can advantageously be different depending on the position of the point in the predefined geographic area.
- this makes it possible not to use the gas treatment unit when a level of gaseous pollutant exceeding a defined threshold, or reference value, over a non-critical geographical area, is detected.
- the gaseous pollutant concentration reference value can be a concentration target value, less than a maximum admissible value or the maximum admissible value.
- the forecast meteorological data taken into account during the step of predicting the concentration values of gaseous pollutants include in particular: a temperature, a speed and a direction of the wind, a degree of cloudiness or a degree of solar radiation , in at least one point of the predefined geographical area.
- the method according to the invention makes it possible to close the treatment bypass pipe to avoid possible atmospheric pollution.
- the characteristics of the emission source taken into account during the prediction step depend on the concentration of gaseous pollutants in the exhaust gas. This parameter can be defined beforehand according to the knowledge of the upstream process.
- the method according to the invention makes it possible to close the bypass pipe of the treatment to avoid possible atmospheric pollution.
- the gas treatment device may further comprise a gas dispersion unit downstream from the gas treatment unit according to the direction of flow of the air flow in said gas treatment device, said gas treatment unit dispersion being located downstream of the outlet of the bypass air line.
- Said method according to the invention can then comprise a step of adjusting the air flow rate of the gas dispersion unit as a function of the prediction calculation of a concentration value of the gaseous pollutants at the at least one point of the predefined geographic area.
- this makes it possible to improve the dispersion of the molecules of the odorous gas molecules when they are present and to reduce the energy consumption of the dispersion unit when it is not necessary to add an effect. dispersion on the gas leaving the chimney.
- the defined time step can be of the order of fifteen minutes.
- This time step corresponds to the time step for carrying out comparisons of the predicted or actual concentrations, that is to say in this case coming from sensors, with a reference value.
- Another time step to be taken into account is the time step for receiving forecast meteorological data.
- This time step can be greater than the comparison time step, for example of the order of an hour.
- the comparison time step can for example correspond to the time step of the forecasts of the meteorological data.
- this makes it possible to improve the temporal precision of the forecast of concentration of odorous molecules and therefore to improve the reactivity of the opening / closing process of the bypass pipe.
- the present invention also relates to a device for treating stale gas, implementing the method for managing the device according to the invention.
- Said stale gas treatment device according to the invention notably comprises:
- a computer comprising at least one processor capable of calculating at least setpoints for opening and closing the bypass air line as a function of forecast data for the concentration of gaseous pollutants in a predefined geographical area;
- a unit for controlling the bypass air line able to receive opening and closing instructions for the bypass air line coming from the processor and able to apply said opening and closing instructions for the line bypass air.
- the device according to the invention makes it possible not to use the gas treatment unit when this is not necessary.
- the at least one processor is in particular connected to an interface dedicated to receiving data for predicting the concentration of gaseous pollutants in the predefined geographical area.
- the at least one processor is in particular capable of calculating forecasts of dispersions of gaseous pollutants over said predefined geographical area, said at least one processor then being connected by a dedicated interface to a meteorological data server.
- the at least one processor is connected via interfaces dedicated to one or more sensors from: • odor gas sensors distributed over said predefined geographic area;
- the at least part of the gas processing unit can be a filter unit.
- such a unit has no inertia with regard to starting the treatment and stopping said treatment. This allows the device to be immediately inactive in a bypass situation and immediately active when at least part of the processing unit is not bypassed.
- the treatment unit according to the invention can be used alone or in combination with other conventional treatment units, for example one or more chemical washing towers.
- the filter unit used can be chosen from an adsorption filter unit and / or a physicochemical gas treatment unit.
- An example of an adsorption filter unit is an activated carbon filter.
- An example of a physicochemical gas treatment unit is in particular a physicochemical washing unit, such as a chemical washing tower; depending on the pollutant (s) to be removed, it may be an acidic chemical wash (in particular with sulfuric acidH 2 S0 4 ), a basic wash (in particular with NaOH soda) ), an oxidative chemical washing (in particular with sodium hydrochlorite NaCIO), or a reducing washing (in particular with bi-sulphite NaHS0 3 , or with thiosulphate l ⁇ la 2 S 2 0 3 ).
- the stale gas treatment device may also include a gas dispersion unit downstream of the gas treatment unit according to the direction of flow of the gases in the gas treatment device, said gas dispersion unit is then located downstream from the outlet of the bypass air line.
- the control unit can control the opening and closing of a motorized damper of the bypass air line.
- the stale gas treatment device may further comprise an active ventilation device disposed upstream of the gas treatment unit and of the inlet of the bypass air line.
- Said active ventilation device can be provided with a controllable frequency variator, capable of taking into account a setpoint of rotation frequency calculated as a function of an opening degree of the motorized register of the bypass pipe.
- One of the advantages of the present invention is to present an automated management mode of a stale gas treatment device comprising an active treatment mode and a mode for bypassing part or all of the active treatment.
- the transition from one mode to the other is carried out automatically thanks to a short-term forecast of dispersion of odor pollution.
- the use in parallel of data acquired in real time makes it possible to guard against a possible error or drift of the forecast, which could for example be due to erroneous weather forecasts.
- FIG. la shows a schematic example of a stale gas treatment device according to the invention
- FIG. 1b represents a first example of an embodiment of the device for treating stale gas according to the invention
- FIG. 1a represents a second example of an embodiment of the device for treating stale gas according to the invention
- FIG. 2 shows different possible steps of the management method of the stale gas treatment device
- FIG. 3a represents a plume of odorous gas in a determined geographical area without treatment of the stale gas at a first instant t3;
- FIG. 3b shows the operating state of the gas treatment bypass device according to the invention at the first instant t3;
- FIG. 3c shows a first result on the plume of odorous gas in the determined geographical area of the application of the method according to the invention at the first instant t3;
- FIG. 4a represents a plume of odorous gas in a determined geographical area without treatment of the stale gas at a second instant t4;
- FIG. 4b shows the operating mode of the gas treatment bypass device according to the invention at the second instant t4;
- FIG. 4c shows a second result on the plume of odorous gas in the determined geographical area, of the method according to the invention at the second instant t4.
- the main objective of the present invention is to improve the management of odor treatment devices and in particular of odors present in the gases discharged by installations.
- waste reprocessing installations, treatment plants or other factories are liable to emit odorous compounds considered undesirable for a population living near such a source of gas emission.
- the invention notably improves the management of waste from odor treatment devices by extending their lifespan. So for example treatments on a carbon bed should not be changed or regenerated as often as in conventional odor treatment facilities.
- Figure la represents an example of different components of an odor treatment device 1 according to the invention.
- the odor treatment device 1 takes in an air flow 2.
- the air inlet flow 2 is sucked in by an active ventilation device 3 so as to be channeled towards a gas treatment unit 4.
- the gas treatment unit 4 can be composed of different physicochemical treatments whose objective is to remove odorous molecules from the air inlet flow 2.
- the gas treatment unit 4 can comprise several stages of activated carbon through which the air inlet flow 2 will pass.
- the gas treatment unit 4 can also include chemical washing towers.
- the gas treatment unit 4 can comprise three chemical washing towers of which a first tower can be an acid washing tower, a second tower can be a yellow / soda washing tower and a third tower can be a soda / sodium thiosulfate washing tower.
- the flow of air freed from odorous molecules is then directed to a gas evacuation chimney.
- the exhaust chimney can optionally be associated with a gas dispersion unit 5.
- the gas dispersion unit 5 allows an increase in the speed of ejection of the gases emitted.
- An air flow 6 at the chimney outlet can be examined by an odorous gas sensor 7 at the chimney outlet.
- the sensor at the chimney outlet 7 makes it possible to detect an outlet of gas abnormally charged with odorous molecules.
- the invention provides a device, and an associated method, for managing the gas treatment device using a bypass line 8 of at least part of the treatment unit 4 when the concentrations of current odorant molecules and at coming are acceptable and that there is therefore no risk of air pollution by the presence of undesirable odors.
- the air leaving the active ventilation device 3 is therefore either directed towards the bypass line 8, or towards the whole or part of the gas treatment unit 4.
- the air routing at the outlet of the active ventilation device 3 can be carried out by a motorized damper 9.
- the active ventilation device 3 can be located between the inlet of the bypass pipe 8 and the inlet of the at least part of the gas treatment unit 4 bypassed by said bypass pipe 8.
- the opening of the register 9 can be partial or complete.
- the motorized register 9 is controlled by a control unit 11.
- the control unit 11 takes into account instructions 12 coming from a calculation processor.
- the odor processing device 1 also comprises a calculation computer 13 or calculator 13.
- the calculator 13 includes at least the calculation processor as well as various interfaces collecting data used by said at least one calculation processor .
- the computer 13 can also comprise one or more storage units for volatile or non-volatile data, to which said at least one processor accesses.
- the at least one calculation processor can comprise, in an exemplary embodiment, one or more calculation cores.
- the calculation processor implements different steps of the method according to the invention.
- the processor can receive as input measurement data coming from several types of sensors, and from several sensors of each of the types of sensors.
- a first sensor can be an odor gas sensor 7 at the outlet of the chimney of a gas emitting installation.
- a second type of sensor 14 can be an odor gas sensor placed in an environment of the gas emission source.
- a third type of sensor 15 can comprise one or more meteorological data sensors placed in the environment of the gas emission source.
- the computer 13 receives weather forecast data from a remote weather forecast data server via a dedicated data link.
- the processor takes into account this weather forecast data to make a forecast of the atmospheric dispersion of the odorous molecules in the environment of the source of the gas. Predicting the atmospheric dispersion of odorous molecules makes it possible to obtain data for predicting the concentration of gaseous pollutants.
- the processor can calculate an opening or closing instruction for the bypass pipe 8.
- the processor can receive data for predicting the concentration of gaseous pollutants already calculated. In this case, a link to a remote weather forecast data server is not necessary.
- the processor can develop a presentation of the current atmospheric situation as a function of the data of the first and second sensors 7, 14, as well as a forecast atmospheric situation, as a function of the forecast calculations carried out.
- the atmospheric situation notably includes a concentration of odorous molecules at different points in the environment of the gas emitting source.
- This atmospheric situation data can then be transmitted to a display interface for this data, connected to the computer 13, for presentation to an operator for example. Examples of representation of atmospheric situations are presented in FIGS. 3a, 3c, 4a, 4c.
- the control unit 11 may also be required to give instructions for adapting the frequency of rotation of the active ventilation device 3 as a function of the positioning of the controlled register 9. In fact, when the register 9 is partially open, for example , this leads to a pressure drop necessitating a higher frequency of rotation of the ventilation device 3 in order to conduct part of the air flow with the pressure necessary for it to pass through the various physico-chemical treatments of the unit. gas treatment 4. To this end, the control unit 11 can transmit a rotation frequency setpoint to a frequency converter 18 controlling the active ventilation device 3.
- FIG. 1b represents a first example of implementation of the odor processing device 1 according to the invention.
- FIG. 1b represents the odor processing device 1 according to a minimum configuration for the implementation of the invention.
- the odor processing device 1 comprises a computer 13 having a means of displaying the composition of the air in odorous molecules in an area surrounding a gas emission area.
- the odor treatment device 1 also comprises a gas treatment unit 4 as well as a bypass air duct 8 of the gas treatment unit 4.
- the odor treatment device 1 is responsible for deodorizing the stale air 2 entering said device.
- An outlet from the gas treatment unit rejects the treated air 6.
- the bypass air line 8 can be opened / closed completely or partially by a register 9 controlled by the computer 13.
- the computer 13 can also control an active ventilation device 3 which can be placed at the inlet of the gas treatment unit 4.
- the active ventilation device 3 makes it possible to compensate for any pressure drop in the unit gas treatment 4 when the register 9 is partially or completely closed.
- the computer 13 in this embodiment can comprise the control unit 11.
- FIG. 1a represents the odor processing device 1 according to the first example of implementation, supplemented by sensors 7, 14, 15 for the implementation of the invention.
- the odor processing device 1 comprises a computer 13 having a means of displaying the composition of the air in odorous molecules in an area surrounding a gas emission area.
- the odor treatment device 1 according to the invention also comprises a gas treatment unit 4 as well as a bypass air duct 8 of the gas treatment unit 4.
- the treatment device odor 1 is responsible for deodorizing the stale air 2 entering said device.
- An outlet from the gas treatment unit rejects the treated air 6.
- the bypass air line 8 can be opened / closed completely or partially by a register 9 controlled by the computer 13.
- the computer 13 can also control a fan 3 placed at the inlet of the gas treatment unit 4.
- the computer 13 can include the control unit 11 in this embodiment.
- the computer 13 may have data input interfaces coming from different sensors: for example a set of weather sensors 15, odor gas sensors 14, a chimney sensor 7 placed in a chimney 102 of gas outlet.
- the chimney sensor 7 is an odor gas sensor.
- the various odor gas sensors 14 can be arranged at different points in a predefined geographical zone 100.
- the geographical zone 100 in the example shown in FIG. 1 a, is a zone surrounding a purification station 101
- the purification station 101 includes multiple treatment devices including a gas treatment device comprising a chimney 102 on which the chimney odor gas sensor 7 is installed.
- scent gas sensors are placed at the level of wooded areas 106, cultivated fields 105, residential areas 103, 104.
- the computer 13 can recover data from different weather sensors 15.
- FIG. 2 represents different possible steps of the method 20 for managing the gas treatment device 1 according to the invention.
- a first step 21 is a step of reception by the calculation processor, or calculator, of weather forecast data originating, for example, from a remote weather forecast data server 16.
- the meteorological forecast data received are temperature data, wind speed and direction, cloudiness or radius- solar energy. These data relate to at least one point in the predetermined geographic area for which all the calculations described below are performed.
- meteorological data can be taken into account depending on the dispersion model used, such as the temperatures and wind speeds at different altitudes at a point in the predetermined geographic area, for example.
- the weather forecast data is regularly supplied to the computer, for example every three hours or every hour. These forecasts cover a defined period for example of forty-eight hours with data calculated according to a time step of fifteen minutes for example.
- the computer 13 can take data into account in a time step of five minutes to an hour for example, and preferably of fifteen minutes, so it is possible to establish a short-term forecast of the evolution of the situation of air pollution in odorous particles.
- a second step 22 of the method according to the invention is a step of predicting the atmospheric dispersion of the odorous molecules at different points in the predefined geographical area.
- the forecast of atmospheric dispersion of odorous molecules makes it possible to obtain data for predicting the concentration of gaseous pollutants.
- Characteristics of the gas emission source are taken into account during the prediction step 22 as input data of the model for predicting the concentration of odorous gas molecules.
- the characteristics of the gas emission source may depend on the concentration of gaseous pollutants in the exhaust gas.
- the characteristics of the gas emission source can be defined beforehand according to the knowledge of the air treatment process carried out upstream of the discharge of the gases into the atmosphere. It is also possible to determine the characteristics of the gas emission source during a previously carried out measurement campaign. Alternatively, the characteristics of the gas emission source can come from the chimney sensor 7, or even from two sensors: one before the gas treatment and the other at the output of the gas treatment.
- the characteristics of the gas emission source will be determined from the last measurements made by the outlet sensor with the bypass pipe 8 of the gas treatment. fully open.
- the prediction of concentration values for odorous gas molecules is calculated for different points of a mesh of said geographic area (100).
- the mesh can be defined for example according to the topography of the geographical area.
- the mesh can be regular or not. For example, two neighboring points of the mesh may be one kilometer apart.
- the mesh includes at least one point.
- each point of the mesh can be associated with a set of data including the type of terrain.
- a step of the mesh can depend on the geographic precision desired for the calculations of forecast concentration of odorous molecules as well as on the speed of execution of the calculations necessary for the efficiency of implementation of the method according to the invention.
- the prediction step 22 of concentration values of molecules of gaseous pollutants can use several types of algorithms for predicting the atmospheric dispersion of molecules: Gaussian, Lagrangian or Eulerian type models.
- Gaussian models ADMS, AERMOD.
- the prediction step 22 therefore consists in calculating, for each time step of forecast meteorological data, for a value of concentration of gaseous pollutants emitted at the level of the chimney, previously defined, a forecast value of concentration of pollutants ga- zeux, and this at each point of the mesh of the predetermined area.
- Gaussian-type predictive models only require input weather forecasts for a point in the predetermined geographic area. Thus the prediction calculations are fast and use little input data.
- a third step 23 of the method according to the invention is a step of comparing, for each point of the mesh and for each forecast time step, the expected concentration of gaseous pollutants with a reference value associated with said point of the mesh.
- the reference value of concentration of gaseous pollutants can be different according to the different points of the grid.
- each point of the mesh is associated with a reference concentration.
- concentration reference values can thus be defined according to the different points of the mesh. For example, it is possible to provide different reference values depending on the type of land: land covered with vegetation will allow a higher reference or tolerance value compared to land covered with dwellings for example. It is also possible to define different reference values according to seasonality aspects.
- the gaseous pollutant concentration reference value can be a concentration target value, less than a maximum admissible value or the maximum admissible value.
- the maximum concentrations of odorous pollutants according to the different points of the grid are defined according to standards with which the sites emitting gas flows must comply. It is therefore possible to take as a reference value the maximum value defined by the standard or even a target value lower than that conceded by the standard.
- an opening instruction 24 of the bypass air duct can be transmitted to the control unit 11 of the register 9 of the bypass air duct 8 for the time step considered.
- a frequency setpoint is calculated and transmitted to the active ventilation device 3 by the control unit 11 for example, in order to compensate for the pressure drop linked to the opening of the bypass line 8 for example.
- the concentration levels are lower than a maximum reference value but greater than a target value for example, to provide an opening or closing instruction for the partial bypass pipe.
- the opening of the piloted register 9 can be 50%.
- the method according to the invention may also include steps allowing additional securing of the gas treatment device, in particular with respect to odor pollution observed or when the predicted meteorological data prove to be different, of a higher value. higher than a defined tolerance value, meteorological data measured, or even when the concentration of odorous pollutants measured in the rejection chimney is greater than a previously defined rejection concentration value.
- the method can include a step of receiving meteorological data 27 measured by at least one meteorological data sensor 15. If the comparison 28 with the predicted meteorological data differs by more than the defined tolerance value, then a setpoint of closure of bypass line 8 can be transmitted directly to register 9.
- the method 20 according to the invention can also include a step of receiving and taking into account 27 of gaseous pollutant concentration values measured by the gaseous pollutant sensor 7 at the outlet of the chimney. If the comparison 28 with the reference value associated with the sensor at the chimney outlet 7 indicates a real concentration of odorous pollutants greater than said reference value then a closure instruction 24 of the bypass pipe 8 can be transmitted directly to the register 9.
- the method according to the invention makes it possible to close the bypass of the treatment to avoid possible atmospheric pollution in odorous molecules.
- the method 20 according to the invention can also comprise a step of receiving and taking into account 27 of gaseous pollutant concentration values measured by at least one gaseous pollutant sensor 14 disposed on the predefined geographic area. If the comparison 28 of the reference value associated with a point of the mesh corresponding to the position of the sensor of gaseous pollutants 14 reveals a value of concentrations of gaseous pollutants greater than said reference value then a closing instruction of the bypass line 8 can be transmitted directly to register 9.
- the taking into account 26, 27 and the comparisons 25, 28 of the values coming from the sensors 7, 14, 15 are carried out in parallel with the steps of forecasting the values of concentrations of gaseous pollutants 22 and of comparing the values of concentrations in predicted gaseous pollutants 23 with a reference value.
- register 9 will remain closed and the bypass line 8 will also remain closed, for example until the previous difference goes into below the given threshold.
- the register 9 of the bypass pipe 8 will remain closed at least until that all measured values of gaseous pollutant concentrations fall below the reference value.
- FIG. 3a represents a geographical area surrounding an area for emitting a gas flow.
- a plume of pollution 30 in odorous molecules is shown, in a determined geographical area without treatment of the stale gas, at a first instant t3.
- the real situation, at the first instant t3 shown in Figure 3c, reveals that the pollution plume has disappeared: the air flow emitted is correctly filtered, the rate of odorous molecules present in the environment is lower than the reference value.
- FIG. 4a represents a plume of pollution in odorous molecules in a determined geographical area without treatment of the vitiated gas, at a second instant t4.
- FIG. 4a represents a situation in which the plume of emitted odorous molecules disperses rapidly and does not generate olfactory pollution.
- the system according to the invention can be in the state shown in FIG. 4b at the second instant t4: the driving of bypass 8 is fully operational, register 9 is completely open, we say that the processing unit is in a “bypass” state. We can then see that this has no impact on the situation represented in real time in FIG. 4c, at the second instant t4.
- the use of the invention makes it possible to reduce the real operating time, for example of an adsorption unit installed in the finish for treating the air flow, by around 40%.
- the invention allows odorous air to be treated only when it is really necessary. For example, this may be the case when weather conditions are not favorable for a dispersion of the odors emitted.
- the time of use and therefore maintenance of the treatment equipment and the waste of this equipment are improved.
- the invention makes it possible to optimize the use of the resources for treatment of stale air flow while guaranteeing an olfactory impact on the environment identical to that obtained with continuous operation of the air flow treatment outgoing.
- adsorption treatments is particularly suited to the invention: in fact, this type of treatment does not require any lag time as much when the treatment is stopped as when it is restarted. this.
- the various embodiments of the present invention include various steps. These steps can be implemented by instructions from a machine executable by means of a microprocessor for example.
- these steps can be performed by specific integrated circuits comprising wired logic to execute the steps, or by any combination of programmable components and custom components.
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Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1859477A FR3087136B1 (fr) | 2018-10-12 | 2018-10-12 | Procede et dispositif de gestion d'un dispositif de traitement de gaz vicie |
PCT/EP2019/077646 WO2020074725A1 (fr) | 2018-10-12 | 2019-10-11 | Procede et dispositif de gestion d'un dispositif de traitement de gaz vicie |
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EP3863751A1 true EP3863751A1 (fr) | 2021-08-18 |
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Application Number | Title | Priority Date | Filing Date |
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EP19783079.7A Pending EP3863751A1 (fr) | 2018-10-12 | 2019-10-11 | Procede et dispositif de gestion d'un dispositif de traitement de gaz vicie |
Country Status (4)
Country | Link |
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US (1) | US12053740B2 (fr) |
EP (1) | EP3863751A1 (fr) |
FR (1) | FR3087136B1 (fr) |
WO (1) | WO2020074725A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023285769A1 (fr) * | 2021-07-16 | 2023-01-19 | Clauger | Dispositif de commande d'un systeme de depollution actif |
FR3125233A1 (fr) * | 2021-07-16 | 2023-01-20 | Clauger | Dispositif de commande d’un système de traitement olfactif actif et procédé de commande associe |
CN114660985A (zh) * | 2021-08-16 | 2022-06-24 | 浙江锌芯友好环境材料科技有限公司 | 一种连续式臭气处理系统自动化控制系统、控制方法 |
CN115414770B (zh) * | 2022-09-15 | 2023-12-01 | 杭州楚环科技股份有限公司 | 垃圾废气处理方法 |
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JP4354792B2 (ja) * | 2003-12-12 | 2009-10-28 | パナソニック株式会社 | 燃料電池発電装置 |
US8392091B2 (en) * | 2008-08-22 | 2013-03-05 | GM Global Technology Operations LLC | Using GPS/map/traffic info to control performance of aftertreatment (AT) devices |
US20100096108A1 (en) * | 2008-10-03 | 2010-04-22 | Sylvain Castagne | Evaporator coil bypass device for HVAC System |
US9028751B2 (en) * | 2009-07-09 | 2015-05-12 | Odotech Inc. | System and method for dynamically controlling odor emission |
US8800271B2 (en) * | 2009-09-18 | 2014-08-12 | Kwang Sung Co., Ltd. | Selective catalyst reduction system with bypass system |
US8307631B2 (en) * | 2010-06-02 | 2012-11-13 | GM Global Technology Operations LLC | Cold start hydrocarbon emission reduction control strategy for active hydrocarbon adsorber |
US20160115675A1 (en) * | 2014-10-28 | 2016-04-28 | Marcus Quigley | Method for automated control of a combined greywater/stormwater system with forecast integration |
FR3032264B1 (fr) * | 2015-02-02 | 2017-03-03 | Degremont | Procede de gestion de flux d'air d'une deshydratation mecanique de boues, et dispositif s'y rapportant |
CN109562965B (zh) * | 2016-08-05 | 2021-11-26 | 东丽株式会社 | 存储有分离膜组件的堵塞位置确定程序的计算机可读取记录介质、造水系统和造水方法 |
FR3061339B1 (fr) * | 2016-12-22 | 2021-12-10 | Suez Int | Systeme et procede et produit programme d'ordinateur de determination d'une nuisance generee par une installation industrielle, installation industrielle equipee du systeme |
FR3077996B1 (fr) * | 2018-02-21 | 2020-02-21 | Suez Groupe | Procede pour le traitement de gaz et unite de traitement associee |
WO2022235986A1 (fr) * | 2021-05-05 | 2022-11-10 | Co2Rail Company (A Wyoming Corporation) | Système et procédé de capture directe de dioxyde de carbone dans l'air sur rail |
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2018
- 2018-10-12 FR FR1859477A patent/FR3087136B1/fr active Active
-
2019
- 2019-10-11 EP EP19783079.7A patent/EP3863751A1/fr active Pending
- 2019-10-11 WO PCT/EP2019/077646 patent/WO2020074725A1/fr unknown
- 2019-10-11 US US17/282,431 patent/US12053740B2/en active Active
Also Published As
Publication number | Publication date |
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US20210387137A1 (en) | 2021-12-16 |
FR3087136A1 (fr) | 2020-04-17 |
WO2020074725A1 (fr) | 2020-04-16 |
FR3087136B1 (fr) | 2021-12-31 |
US12053740B2 (en) | 2024-08-06 |
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