Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
  • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
  • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
  • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
  • B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/0075—Nozzle arrangements in gas streams

Definitions

• the present invention relates to a device and a process for odorizing a gas circulating in a pipe. It applies, in particular, to the odorization of biomethane and natural gas.
• TAT tetrahydrothiophene
• TPM tert-butyl mercaptan
• Odorant injection systems in liquid form in a natural gas pipeline are generally sized to be effective at the maximum gas flow rate observable at the injection point and stabilized flow regime.
• Sprays generate droplets with a diameter of up to one hundred micrometers.
• diffusers impregnated with odorant are used.
• the accumulation of liquid odorant in the impregnator can generate over-odorization when the flow of gas is stopped and restarted, which can, in the context of the injection of biomethane on the network, delaying the resumption of injection for several hours and constitute a shortfall for the producer.
• Another known system is that of injection and pump systems in which the liquid odorant compound is injected directly into the gas pipeline by means of a pump, for example a membrane pump, or by injecting the odorant compound with gas. under pressure.
• the liquid odorant compound evaporates in the gas by the use of an injection rod having a porous material or after a coarse spray.
• the techniques of odorization by evaporation in contact with the odorant compound of the storage tank are used to odorize low gas flow rates. They are hardy and have the advantage of not requiring energy input. They are adapted to the use of pure odorizing compounds or whose constituents have similar vapor pressures since the passage of the odorant in the gas is by evaporation.
• the use of a mixture of products with vapor pressures that are too far apart could lead to distillation phenomena and lead to the depletion of the liquid fraction for a constituent, thus to a change in the quality of the odorization over time. . It is especially for this type of odorizer that care must be taken to use odorizing compounds with a high vapor pressure. This makes it possible to limit variations in odorant concentration when the temperature of the gas, or the outside temperature, varies.
• evaporative odorizer There are three types of evaporative odorizer: wick, licking and pulsed.
• Wick odors are used mainly in the United States for the odorization of very low flow rates, typically intended for the feeding of an isolated house.
• a wick soaks into the odorant reservoir, attached directly to the pipeline, and emerges into the gas stream.
• the odorant compound circulates in the wick by capillarity and evaporates in the gas flow.
• the main problems of this type of odorizer are related to the fouling of the wick by oils or greases entrained by the gas.
• too high gas flow rates, especially if accompanied by low temperatures significantly reduce the rate of evaporation which can lead to under-odorization.
• the lick odorisers are used when the gas flows to be smelled are quite low, typically the consumption of a small town. Their operation depends on the installation of a pressure reducing element, such as an orifice plate, in the gas line to be odorized. Picks on either side of this obstacle make it possible to communicate with the reservoir of odorant compound. An adjustment valve located on one of the branch connections makes it possible to adjust the pressure drop of the bypass circuit.
• the flow rate of gas passing through the odorant reservoir is a function of the pressure drop in the main pipe and therefore the main gas flow. If the exchange surface of the odorant reservoir is sufficient, the gas that comes out is saturated with odorant and can odorize at a constant level the main flow by mixing.
• the main problems of this type of odorizer are related:
• the pressure drop created by the pressure reducing element may become insufficient for the flow rate in the odorant reservoir is significant.
• Injection odorization techniques involve transporting the liquid odorant compound into the pipe where it evaporates in the main gas stream.
• the gas unless it is used to put the odorant compound under pressure, is no longer in contact with the odorant compound in the storage tank. We can therefore separate the installation into three parts:
• a reservoir of odorant compound which may be at atmospheric pressure or at a slight overpressure to avoid contact with the air, which may lead to pollution by dust or water,
• a pressurizing system such as a pump for example, controlled by a measurement of gas flow and
• This type of installation is adaptable to any type of flow. It allows a good control of the odorization over a fairly wide range of operation. It is usable with all odorizing compounds available on the market.
• One of its advantages is that the odorant reservoir does not have to be at the pressure of the gas. On the other hand, it requires a power supply and the measurement of the gas flow, so the installation of a counting device.
• the liquid odorant compound is injected using the pressure of the gas from the upstream of the flash station.
• the odorant compound reservoir is placed at a relatively high pressure above the gas pressure to be odorized and a mass flow controller is directly controlled according to the gas flow to be odorized.
• This solution may, however, cause problems at low flow rate when the control of the flow of odorant compound becomes difficult. It also claims the pressurization of the odorant reservoir to a level high enough to overcome the pressure losses of the reservoir.
• the pump odorizers are equipped, in their most basic version, with a device for measuring the flow of the gas to be odorised, a pump and a controller that regulate the flow rate of the pump at the gas flow rate. These installations allow a very stable odorization of the gas. However, at very low flow, it can be observed, given the decrease in the pumping frequency:
• a measurement of the odorant content is performed downstream of the injection point in order to close the regulation loop and correct any drifts of the system.
• Two measurements of the odorant content one upstream and one downstream of the injection point, can be made.
• This particular configuration is necessary for the odorization of the gas leaving the underground reservoir.
• the odorant content of gas from aquifer storage can vary rapidly over a wide range. It is therefore necessary to supplement as much as necessary its odorisation. Measuring the upstream content makes it possible to determine the quantity of odorant compound to be injected into the gas in order to carry out this supplement and to rapidly modify the injection set point.
• Measuring the downstream content makes it possible to ensure correct regulation.
• the use of the only downstream measurement of the content of the odorant compound does not lead to correct regulation because of the response times and inaccuracy of the measuring devices.
• the odorant compound arriving liquid in the gas line it is advisable to promote its evaporation. In some facilities it is sufficient to unclog the tube bringing the odorant compound on an upper generatrix of the pipe. In this case, the odorant compound drips and evaporates while falling on the wall. If evaporation is not fast enough, a puddle may form which can cause fluctuations in concentration as a function of flow. Indeed, the stream of evaporated odorant compound is bonded to the surface of the puddle at equal temperature and therefore evolves slowly while the gas flow can vary in significant proportions.
• Evaporative systems require that the reserve of liquid odorant compound be maintained at the pressure of the gas flowing in the pipe, which poses obvious regulatory problems.
• the contact between the odorant compound and the natural gas causes pollution of the odorant compound with the possible solubilization of gas compounds in the odorant compound which can degrade the quality thereof.
• the physical principle of these systems causes a great variability of the contents of odorant in the gas if the ambient temperature changes (the saturation vapor pressure being a function of the temperature). This physical principle is also very poorly suited to the use of odorizing compounds composed of product mixture such as TBM.
• Injection and pump systems inject a fixed amount of odorant compound each time the pump is actuated.
• the frequency of actuation of the pump decreases, which leads to a discontinuous operation of the system.
• the absence of back pressure between two successive actuations of the pump leads to defusing thereof to the slightest leakage of the pump.
• the injection of a large amount of odorant at each actuation of the pump in a very low gas flow leads to poor evaporation of the odorant compound.
• These pump and injection systems can also generate nonconformities of odorization during sudden changes in flow rate:
• low-density under-odorization may occur (the odorant may strike the wall and store as a pool in the pipeline instead of vaporizing in the gas); likewise, over-odorization can occur when the gas flow increases (the turbulence favoring evaporation of the puddle) before stabilizing at the correct concentration,
• impregnator pump system: the liquid odorant accumulates in the impregnator; at the flow cut-off, the odorant can drip and create over-odorization at the resumption of flow and
• this system is potentially precise and reactive and it would probably solve the non-conformities of the odorization during flow variations.
• it contains many complex elements, including a high pressure pump and a piezoelectric controlled opening head; testing and possible modification of these elements can be complex and expensive; the final cost of the product can be high.
• the present invention aims to remedy all or part of these disadvantages.
• the invention relates to a device for odorizing a gas circulating in a pipe, which comprises:
• micro-perforated membrane serving as an interface between the reservoir and an interior volume of the pipe
• the membrane vibrating, extrudes the liquid present against one of its faces and passes the liquid on the other side of the membrane in the form of droplets.
• the vibrations of the membrane eject the droplets that have passed through the membrane so as to form a cloud of microdroplets.
• the device which is the subject of the invention thus behaves like an odorant nebulizer.
• the size of the nebulized drops may be of the order of four micrometers, against drops of five to one hundred micrometers for conventional sprayers, which avoids the creation of puddles in the pipe,
• the pressurizing means of the compound maintains the pressure in the compound reservoir less than or equal to the pressure of the pipeline.
• the pressurizing means of the compound maintains the pressure in the compound reservoir lower than the pressure of the pipeline.
• the device which is the subject of the invention comprises means for controlling the pressure inside the tank at the gas flow rate in the pipe.
• the servo means is configured so that the pressure difference is, in absolute value, a decreasing function of the gas flow in the pipe.
• the device of the invention comprises a vent connected to the reservoir, the opening and closing of this vent being controlled by the pressurizing means, depending on the pressure difference.
• the device according to the invention comprises a pipe connecting the vent to the tank, the connection between the tank and the pipe being made by an opening positioned on an upper part of the tank so as to be positioned opposite a gaseous sky contained in the tank.
• the device according to the invention comprises a pipe for gas connecting the pipe to the tank, the opening and closing of this pipe being controlled by the pressurizing means, depending on the difference in pressures.
• the pressure difference capture means senses a pressure difference between the interior of the pipe connecting the pipe to the tank and the pipe connecting the tank to the vent.
• the pressurizing means of the compound maintains the compound at a pressure at least 50 millibar lower than the pressure of the pipe.
• the pressurizing means of the compound maintains the compound at a pressure at least 100 millibar lower than the pressure of the pipe.
• the device that is the subject of the invention comprises:
• the vibrating means being configured to vibrate the membrane according to the calculated amount.
• the device that is the subject of the invention comprises means for measuring the temperature of the odorant and / or the gas, the vibrating means being actuated as a function of the measured temperature.
• the device that is the subject of the invention comprises means for measuring the pressure of the gas, the vibrating means being actuated as a function of the measured pressure.
• the device according to the invention comprises means for measuring the characteristics of the electrical signal of the membrane supply circuit (frequency, duty cycle, amplitude and / or DC component of the voltage across the membrane and / or the intensity of the current flowing through the membrane), the vibrating means being actuated according to these characteristics.
• the device that is the subject of the invention comprises means for measuring the concentration of the odorant downstream of the membrane, the vibrating means being actuated as a function of the measured concentration.
• the membrane is positioned against a lower portion of the reservoir.
• the device that is the subject of the invention comprises a flowmeter measuring the odorant flow rate passing through the supply duct.
• the device that is the subject of the invention comprises:
• the device that is the subject of the invention comprises a plurality of micro-perforated membranes.
• the vibrating means is a piezoelectric crystal.
• the vibrating means and the membrane are merged.
• the device which is the subject of the invention comprises a filter on the supply duct of the odorant compound reservoir.
• the system for supplying the odorant reservoir comprises a pump.
• the system for supplying the odorant reservoir comprises an intermediate reservoir and solenoid valves.
• the device according to the invention comprises a rod or a sleeve comprising each membrane and connected to the reservoir so that the odorant compound comes into contact with each membrane.
• the invention relates to a process for odorizing a gas circulating in a pipe, which comprises:
• FIG. 1 represents, schematically, a first particular embodiment of the device which is the subject of the invention
• FIG. 2 represents, schematically, a second particular embodiment of the device which is the subject of the invention
• FIG. 3 represents, schematically, a third particular embodiment of the device which is the subject of the invention.
• FIG. 4 represents, schematically, a particular embodiment of the membrane of the device which is the subject of the invention.
• FIG. 5 represents, schematically and in the form of a logic diagram, a particular sequence of steps of the method which is the subject of the invention
• FIG. 6 represents, schematically, a fourth particular embodiment of the device which is the subject of the invention.
• FIG. 7 represents, schematically, the fourth particular embodiment of the device which is the subject of the invention.
• FIG. 8 shows schematically the fourth particular embodiment of the device object of the invention.
• gas flowing in the gas pipe 200 is, for example, biomethane, natural gas or hydrogen produced by a process for converting electrical energy into gas, known as "power to gas ".
• Line 200 corresponds to any gas transport pipeline of a gas supply network from a gas production unit to a gas consumption unit.
• odorant compound means pure products (THT), mixtures based on sulfur compounds (TBM, mercaptans, sulfides) or acrylate-based mixtures (Gasodor S-Free from Symrise (Trademarks). filed)).
• TAT pure products
• TBM mixtures based on sulfur compounds
• mercaptans mercaptans
• sulfides acrylate-based mixtures
• FIG. 1 which is not to scale, shows a schematic view of an embodiment of the device 100 which is the subject of the invention.
• This device 100 for odorizing a gas circulating in a pipe 200 comprises:
• micro-perforated membrane 1 10 serving as an interface between the reservoir and an internal volume of the pipe 200 and
• the membrane 1 10 is, for example, a micro-perforated membrane configured to form droplets of odorant compound whose diameter is preferably between four and six micrometers.
• the membrane 1 10 may be vertical or horizontal or oblique.
• the membrane attachment system 1 10 firmly holds the membrane to seal between the odorant and the pipe 200 while being flexible enough not to overly constrain the membrane or prevent its vibration.
• This membrane 1 10 is preferably configured to withstand a pressure of eighty-five bars.
• This membrane 1 10 is preferably configured to nebulize 0.3 to 2400 normo cubic meters per hour when the droplets have a diameter of four micrometers.
• the membrane 1 10 is positioned against a lower portion of the reservoir 105, the contact between the compound and the membrane 1 10 being ensured, for example, by gravity.
• the membrane is vertical and the contact between the compound and the membrane is ensured by the pressurization of the compound.
• the device 300 comprises a plurality of membranes 1 10.
• the device 300 nebulizes between two hundred and two million cubic meters per hour.
• the vibrating means 120 is, for example:
• the vibrating means 120 and the membrane 1 10 are preferably merged, the membrane 1 10 itself acting as vibrating means 120.
• the membrane 1 10 may be formed of a piezoelectric element, and the membrane acts both as an interface between the reservoir and the pipe 200 and as vibrating means 120.
• the vibrating means 120 is, for example, configured to create vibrations of the membrane 10 at a frequency of between ten and one hundred thousand Hertz.
• the device 100 comprises:
• the vibrating means 120 being configured to vibrate the membrane 1 10 according to the calculated amount.
• the sensor 125 is, for example, a flow meter among all types of known flow meters.
• the computer 130 is, for example, an electronic circuit connected to the gas flow sensor 125 by a wired or wireless link and to receive a value representative of the measured flow rate.
• This calculator 130 calculates, from a predetermined mathematical formula, the amount of compound to be nebulized.
• the computer 130 is connected by a wired or wireless connection with the vibrating means 120 of the membrane 1 10 and transmits a value representative of the calculated quantity.
• the vibrating means 120 determines, from the value of the calculated quantity received:
• the pressurizing means 135 is, for example:
• a passive pressure balancing mechanism includes, for example, a movable piston at the interface between the gas and the liquid.
• a movable piston at the interface between the gas and the liquid.
• any mechanism that allows a variation of the volume of the tank under the action of the gas under pressure can be implemented.
• the device 100 comprises means 140 for capturing the difference between the pressure of the gas in the pipe 200 and the pressure inside the tank 105, the pressurizing means 135 being controlled as a function of the difference in pressure.
• the pressure difference capture means 140 is, for example, a differential pressure gauge connected by a wired or wireless connection to the pressurizing means 135. It is noted that this pressure difference capture means 140 may comprise two sensors. Pressure, one of which is located in the reservoir and the other in the gas pipe, or comprise a single sensor positioned at an interface between the reservoir and the pipe. In embodiments, the pressure difference capture means 140 outputs an electrical signal representative of the pressure difference. In embodiments, the pressure difference capture means 140 transmits a mechanical force resulting from the considered pressure difference.
• the pressurizing means 135 thus preferably comprises an electronic control circuit (not shown) configured to pressurize the odorant compound according to a pressure determined as a function of the pressure difference sensed by the pressure difference capture means. 140.
• This determined pressure corresponds, for example, substantially to the pressure sensed in the pipe 200 by the pressure sensor 140. In preferred variants, the determined pressure is less than the pressure in the pipe 200.
• the pressure in the reservoir 105 is maintained at a lower pressure of at least 50 millibar, and preferably at least 100 millibar, at the pressure of the pipe 200.
• regulation of the pressure in the reservoir is carried out, slaved to the flow of gas in the pipe.
• the pressure difference is, in absolute value, a decreasing function of the gas flow in the pipe.
• a pressure difference of 50 or 100 mbar is applied in stabilized mode, and this pressure difference is increased to 300 mbar when the gas flow of the pipe becomes zero.
• the device 100 comprises a flowmeter 151 on the conduit 150 for supplying the reservoir 105 with an odorant compound.
• the device 100 comprises a non-return valve 145 positioned on a conduit 150 for supplying the reservoir 105 with an odorant compound.
• the non-return valve is positioned downstream of the flowmeter 151 to protect it from a possible return.
• the odorant compound is fed by gravity or via the implementation of a circulation pump of the compound from a reservoir (not shown) of odorant compound.
• a syringe pump for example, a gear pump or a peristaltic pump is used.
• the advantage of the syringe pump is that it makes it possible to circulate a reduced flow of odorant compound while generating a high pressure difference, unlike other types of pumps, for which, in general, a reduced flow rate corresponds to a low pressure, and a high pressure difference corresponds to a high pressure.
• the device 100 comprises:
• a mechanism 360 for closing a conduit 150 for supplying the reservoir with an odorant compound is provided.
• the detector 355 is, for example, a mechanical detector of a direction of flow of the odorant compound, or of the gas to be blocked, in the supply conduit 150. As long as the odorant compound circulates in a first direction, corresponding to the supply of odorant compound of the tank 105, the closure mechanism 360 is inhibited. As soon as the odorant compound, or the gas introduced into the tank 105 following a failure of the pressurizing pump, circulates in a second direction opposite to the first direction, the detector 355 actuates the closure mechanism 360.
• the detector 355 measures the mechanical impedance of the membrane 1 10. A rupture of the membrane 1 10 is detected when the measured impedance crosses a predetermined limit value or undergoes a significant variation greater than a predetermined variation.
• the detector 355 is a calculator measuring an offset between a flow rate setpoint value to be vaporized sent to the vibrating means and the odorant flow rate actually passing through the membrane, measured by:
• the closing mechanism 360 of the conduit is, for example a shutoff valve.
• the device 100 comprises a filter 165 at the interface between the reservoir 105 and the membrane 1 10.
• This filter eliminates any particles present in the liquid odorant, to avoid the risk of clogging micro-perforations of the membrane; the filter may have a filtration limit between 0.5 and 4 ⁇ for example.
• the device 400 comprises a rod 470 or a sleeve comprising each membrane 1 10 and connected to the reservoir 105 so that the odorant comes into contact with each membrane 1 10.
• the sleeve allows attachment via a flange mounting of the pipe 200. Nevertheless, the flange assumes the sectioning and replacement (not shown) of a piece of the pipe 200.
• the rod 470 comprises a screwing means to an orifice of the pipe 200 such as, for example, an orifice dedicated to the insertion of the impregnators on biomethane odorization stations currently implemented.
• the device, 100, 300 or 400 is retractable under load for ease of maintenance.
• the device, 100, 300 or 400 is integrated in a wall of the pipe 200 so that the membrane 1 10 is positioned in the extension of the pipe 200.
• FIG. 4 diagrammatically and in section shows a particular embodiment of the membrane 1 10 of the device, 100, 300 or 400, as described with reference to FIGS. 1, 2 or 3.
• FIG. 5 diagrammatically shows a particular flow diagram of the process of the invention.
• This method 500 for odorizing a gas circulating in a pipe comprises:
• the pressure in the reservoir of the compound is kept lower or equal and, still more preferably strictly lower, at the pressure of the pipe.
• the pressure inside the reservoir is slaved to the flow of gas in the pipe.
• the pressure difference is thus, in absolute value, a decreasing function of the gas flow in the pipe. This lowering of the pressure difference in the odorant reservoir when the flow rate increases allows a good regulation of the level of compound in the gas.
• the high pressure difference when the flow is zero reduces or even avoid the passage of odorant compound.
• the method 500 comprises:
• the step 510 of vibration being performed according to the calculated amount.
• This method 500 is implemented, for example, by one of the devices, 100, 300 or 400, as described with reference to FIGS. 1, 2 and 3.
• FIG. 6 diagrammatically, simplified and in section shows a particular embodiment of the device, 100, 300 or 400, which is the subject of the invention.
• the reservoir 105 is observed, a difference sensor 140 of pressures, a pressurizing means 135 and the pipe 200 as described with reference to FIGS. 1 to 3.
• the pressurizing means 135 is an electronic control circuit configured to control the introduction of a fluid into the reservoir 105 or the extraction of a portion of the fluids contained in this reservoir 105.
• the means 135 for pressurizing the compound maintains the compound at a pressure less than or equal to, and preferably substantially less than, the pressure of the pipe 200.
• the device 100 comprises a vent 605 connected to the reservoir 105, the opening and closing of this vent 605 being controlled by the pressurizing means 135, depending on the difference in pressures.
• the pressurizing means 135 controls the evacuation of a part of the fluid contained in the reservoir 105.
• This evacuation is performed, for example, by the temporary opening of a solenoid valve positioned on a pipe 610 connecting the reservoir 105 to the vent 605.
• the pressure in the reservoir 105 is preferably greater than the atmospheric pressure, the fluid s' flows from the tank 105 to the vent 605. This opening is carried out until the pressure difference fulfills the pressure conditions set out above.
• Such an example of reducing the pressure in the tank 105 is illustrated in FIG.
• connection between the reservoir 105 and the pipe 610 is made by an opening 615 positioned on an upper part of the tank 105 so as to be positioned facing a gas sky contained in the tank 105.
• This gas sky may be the result of the evaporation of the odorant compound or the presence of gas from the pipe 200.
• the device 100 comprises a pipe 620 for gas connecting the pipe 200 to the tank 105, the opening and closing of this pipe being controlled, by the means 135 for setting pressure, depending on the pressure difference.
• the pressurizing means 135 controls the injection of gas from the pipe 200 into the tank 105.
• This injection is performed, for example, by the temporary opening of a solenoid valve positioned on a pipe 620 connecting the reservoir 105 to the pipe 200.
• the pressure in the tank 105 being less than the pressure of the pipe 200, the fluid s flows from the pipe 200 to the tank 105. This opening is carried out until the pressure difference fulfills the pressure conditions set out above.
• FIG. 8 Such an example of reducing the pressure in the reservoir 105 is illustrated in FIG. 8.
• the pressure difference sensor 140 senses a pressure difference between the interior of the line 620 connecting the line 200 to the reservoir 105 and the line connecting the reservoir to the vent 605.
• the means 135 for pressurizing the compound maintains the compound at a pressure at least 50 millibar lower than the line pressure.
• the means 135 for pressurizing the compound maintains the compound at a pressure at least 100 millibar lower than the line pressure.
• the value of at least 100 mbar can be used.
• a pressure difference of at least 200 mbar and even more preferably at least 300 mbar is used.
• this pressure difference is less than 500 mbar and, preferably, less than 400 mbar.

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• Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
• Sampling And Sample Adjustment (AREA)

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• 2016
  • 2016-03-08 FR FR1651905A patent/FR3048623A1/fr active Pending
• 2017
  • 2017-03-08 CN CN201780027144.8A patent/CN109153032A/zh not_active Withdrawn
  • 2017-03-08 US US16/083,498 patent/US10730067B2/en active Active
  • 2017-03-08 MX MX2018010898A patent/MX2018010898A/es unknown
  • 2017-03-08 EP EP17713354.3A patent/EP3426414B1/de active Active
  • 2017-03-08 WO PCT/FR2017/050512 patent/WO2017153682A1/fr active Application Filing
  • 2017-03-08 CA CA3015943A patent/CA3015943A1/fr not_active Abandoned

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