EP4121499A1 - System and method for odorising a gas - Google Patents
System and method for odorising a gasInfo
- Publication number
- EP4121499A1 EP4121499A1 EP21710326.6A EP21710326A EP4121499A1 EP 4121499 A1 EP4121499 A1 EP 4121499A1 EP 21710326 A EP21710326 A EP 21710326A EP 4121499 A1 EP4121499 A1 EP 4121499A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- gas
- pressure
- fluid
- closed loop
- 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 122
- 238000013016 damping Methods 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims description 142
- 238000002347 injection Methods 0.000 claims description 65
- 239000007924 injection Substances 0.000 claims description 65
- 238000011144 upstream manufacturing Methods 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 23
- 238000004868 gas analysis Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004128 high performance liquid chromatography Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 10
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000004817 gas chromatography Methods 0.000 claims description 5
- 230000002596 correlated effect Effects 0.000 claims description 3
- 239000003205 fragrance Substances 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 54
- 239000003345 natural gas Substances 0.000 description 26
- 239000007788 liquid Substances 0.000 description 23
- 230000001276 controlling effect Effects 0.000 description 10
- 238000009826 distribution Methods 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000011049 filling Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000000855 fermentation Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 3
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- 239000002360 explosive Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000009965 odorless effect Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 101100364675 Mus musculus Ss18l2 gene Proteins 0.000 description 2
- 230000009471 action Effects 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
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- 230000002211 methanization Effects 0.000 description 1
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- 210000003462 vein Anatomy 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/003—Additives for gaseous fuels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
- B05B12/006—Pressure or flow rate sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
- C10L2290/141—Injection, e.g. in a reactor or a fuel stream during fuel production of additive or catalyst
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/58—Control or regulation of the fuel preparation of upgrading process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/60—Measuring or analysing fractions, components or impurities or process conditions during preparation or upgrading of a fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Definitions
- the present invention relates to the field of odorizing a gas, in particular a renewable gas, more particularly biomethane.
- Renewable gas is understood to mean a gas that is not extracted from fossil reserves. It thus opposes fossil gases from limited resources.
- natural gas is meant a gas obtained from fossil reserves.
- the renewable gas can for example be obtained by fermentation.
- biogas When it is obtained by fermentation of organic material in the absence of oxygen, it is called biogas.
- the biogas is generally purified, that is to say, carbon dioxide and hydrogen sulphide, which are also products of the anaerobic fermentation process, are removed, for example to obtain substantially pure biomethane.
- the renewable gas can be biomethane obtained by methanogenic fermentation, by methanation or methanization. It can also be gas produced from a methanation process (example of the “power to gas” project, Jupiter 1000 combining hydrolysis and C0 / C0 2 capture).
- Biomethane is the methane obtained by processes other than the extraction of fossil reserves, for example by anaerobic digestion. It differs from methane directly obtained from fossil resources.
- biomethane as a renewable gas is now implemented at 89 sites in France and many projects are underway.
- the renewable gas biological gas
- biomethane such as purified biogas for example
- a transport network a network allowing the movement of gas in a pipe over great distances.
- a pipe of a transport network is rather large in diameter (of the order of 200 to 1200 mm) and is subjected to a high internal pressure, generally up to 100 barg.
- the unit barg which will be used in the remainder of the document, is a unit of measurement for pressure. It corresponds to the bar gauge whose zero corresponds to atmospheric pressure.
- 1 barg corresponds to 2 bara (the bara unit corresponds to absolute bar) and therefore to 0.2 MPa (1 bara corresponding to 0.1 MPa).
- a distribution network a network allowing local distribution to different entities, individuals, companies, etc ...
- a pipe of a distribution network has rather a small diameter compared to a pipe of a network (DN 150 mm maximum) and is subject to an internal pressure which is also lower (10 barg maximum).
- Odorization which gives renewable gas the characteristic odor given to natural gas.
- Natural gas and renewable gases such as biomethane, are odorless, highly explosive and deadly when inhaled in high concentrations. The odorization of these gases makes it possible to detect any leaks and avoid any risk of explosion or over-inhalation.
- injection stations are purchased, installed and maintained by network operators.
- natural gas flow rates are greater than 500 Nm 3 / h (the unit Nm 3 / h corresponds to normal cubic meters per hour) for the low pressure network (less than 10 barg, 1 barg corresponding to 2 bara and 1 bara corresponding to 0.1 MPa) and included between 40,000 and 1,000,000 Nm 3 / h for the high pressure network (generally between 50 and 70 barg) while the biomethane flow rates vary between 10 and 100 Nm 3 / h for the low pressure network (less than 10 barg ) and between 100 and 800 Nm 3 / h for the high pressure network (between 50 and 70 barg).
- the biomethane flow rates are very much lower than the natural gas flow rates, both for high pressure networks and for low pressure networks.
- Figure 1 shows a usual odorization system according to the prior art in the case of natural gas.
- They include a tank R for odorous liquid and a supply stream V for natural gas and / or renewable gas.
- this supply stream V (a pipe for example)
- the natural gas and / or the renewable gas circulates in the direction of the arrow in phantom in FIG. 1.
- a pump P is generally used positioned on a pipe connecting the reservoir R to the supply vein V.
- the pump P is used both to pressurize the odorous liquid and to control the flow rate, the output flow rate of the pump P being slaved to the flow rate and to the pressure of the supply stream V.
- a safety valve S is also installed to avoid any risk of overpressure in the connecting pipe between the reservoir R and the stream of supply V.
- the injection of the fragrant fluid, in liquid form into the reservoir R is carried out in the supply stream V of the natural and / or renewable gas.
- the present invention overcomes these drawbacks by allowing the injection of an odorous fluid in very small quantities, continuously and adapted to different flow rates and pressures.
- the present system and the present method meet the operating conditions of the natural gas and renewable gas supply streams, in a reliable and efficient manner.
- the invention proposes to improve the injection of odorous fluid, in liquid form for example, into a stream for injecting a gas, preferably a renewable gas such as biomethane, if possible by retaining or improving the characteristics of the pump used, preferably by providing a new level measurement system using a measuring system by weighing, injection by rod and / or capillary tube with a small diameter passage for natural gas in order to '' obtain a compatible injection system into renewable gas or natural gas, while limiting installation costs.
- a gas preferably a renewable gas such as biomethane
- the invention relates to a system for the odorization of a gas (by "a" gas is meant a gas or a mixture of gases comprising different types of gas), preferably a renewable gas (eg biogas). , preferably biomethane), the gas circulating in a pipe.
- a gas is meant a gas or a mixture of gases comprising different types of gas
- a renewable gas eg biogas
- biomethane e.g., preferably biomethane
- the pipe can be the pipe of a gas transport, distribution and / or storage network, or a pipe for conditioning the gas, for example in a bottle.
- the odorization system includes at least one closed loop circuit and a line for connecting the closed loop circuit to the gas line.
- the closed loop circuit comprises at least one reservoir of an odorous fluid, a means of circulating the odorous fluid and a pressure control means
- the pipe comprises at least one means of controlling the flow of fluid. fragrant.
- the pressure of the closed loop circuit is greater than or equal to the pressure of the pipe, itself being greater than or equal, and preferably strictly greater. , to the pressure of the pipe.
- the system according to the invention comprises at least one damping means, preferably several damping means, these damping means making it possible to damp vibrations and / or pressure variations. Summary of the invention
- the invention relates to a system for odorizing a gas flowing in a pipe, said system comprising at least one closed loop circuit and a pipe, said pipe connecting said closed loop circuit to said pipe, said closed loop circuit comprising a reservoir of 'an odorous fluid, a means for circulating said odorous fluid and a pressure control means, said pipe comprising at least one means of controlling the flow of said odorous fluid, the pressure of said closed loop circuit being greater than or equal to said said pressure of said pipe, the pressure of said pipe being greater than or equal to the pressure of said pipe.
- the system includes at least one damping means.
- said fragrant fluid comprises tetrahydrothiophene and / or mercaptan.
- the pipe comprises a valve, said valve being positioned upstream of the flow control means.
- said at least one damping means comprises an upstream pressure regulating means, positioned between said flow control means and the gas pipe.
- the injection flow rate range of the flow control means is between 0.25 g / h and 25 g / h.
- the pipe comprises a filtration means, positioned upstream of the flow control means.
- said at least one damping means comprises at least part of said pipe in the form of turns, and / or an anti-pulsation pot, and / or a back-flow regulator.
- said anti-pulsation pot is positioned on the closed loop circuit, preferably between the means for circulating said fragrant fluid and the junction of said pipe with said closed loop circuit.
- said regulator is positioned on the closed loop circuit, preferably between the means for circulating said odorous fluid and the junction of said pipe with said closed loop circuit, preferably upstream of said anti-pulsating pot.
- the system further comprises a gas analysis means and a control device, said gas analysis means being positioned on said pipe downstream of the connection between said pipe and said pipe, said control device being connected to said gas analysis means and to said flow control means, preferably the gas analysis means being a means of gas chromatographic analysis.
- said system comprises precision measurement means, the precision measurement means being preferably positioned under the reservoir, preferably, said precision measurement means comprising a precision balance and, preferably, the precision balance being correlated with said flow measurement means.
- the system comprises a capillary injection rod.
- the means for circulating said odorous fluid is a pump, preferably a positive displacement pump or an HPLC pump.
- the system further comprises a heating system, preferably said heating system being positioned on said pipe, preferably between said flow control means and the junction of said pipe with said pipe. pipeline.
- the invention also relates to a method for odorizing a gas circulating in a pipe, said method being implemented by means of the system for odorizing a gas according to one of the characteristics described above, characterized in that it is carried out at minus the following steps:
- the pressure of the closed loop is adjusted by the pressure control means, said pressure of the closed loop being greater than or equal to said pressure of said pipe, the pressure of said pipe being greater than or equal to the pressure of said pipe ;
- odorous fluid is injected into said pipe, the flow rate of the odorous fluid being controlled by said flow control means, the flow rate of said odorous fluid being slaved to the flow rate of said gas from said pipe, preferably the injection flow rate of said odorous fluid in said pipe being between 0.25 and 25 g / h.
- the injection rate of the odorous fluid in said flow control means is controlled by analyzes of the gases carried out in said pipe downstream of the injection of the odorous fluid into said pipe.
- Figure 1 already described, shows a system and a method for injecting odorous liquid into a gas line according to the prior art.
- FIG. 2 represents a system and a method for injecting odorous fluid into a gas line according to a first embodiment of the invention.
- FIG. 3 represents a system and a method for injecting odorous fluid into a gas line according to a second embodiment of the invention.
- Figure 4 shows a system and method for injecting odorous fluid into a gas line according to a third embodiment of the invention.
- Figure 5 shows an example of use of the system of Figure 4 (without the heating system C).
- FIG. 6 represents an example of dynamic operation of the system of FIG. 4 (without the heating system C).
- Figure 7 shows a comparison of a system of Figure 4 (without the heating system C) with a positive displacement pump of the diaphragm metering pump type and of a system of Figure 4 (without the heating system C) with an HPLC type pump.
- FIG. 8 represents a system and a method for injecting odorous fluid into a gas pipe according to a fourth embodiment of the invention. Description of the embodiments
- the invention relates to a system for odorizing a gas, the gas being renewable gas or natural gas.
- the gas circulates in a pipe.
- the odorization system is more particularly suitable for odorizing renewable gases for which the flow rates are relatively low (10 and 100 Nm 3 / h for the low pressure network, less than 10 barg, and between 100 and 800 Nm 3 / h for the high pressure network, between 50 and 70 barg) compared to the natural gas flow rates (500 Nm 3 / h for the low pressure network, less than 10 barg and between 40,000 and 1,000,000 Nm 3 / h for the high pressure network, between 50 and 70 barg).
- the system according to the invention nevertheless remains compatible with the odorization of natural gases.
- odorizing a gas is meant to give an odor (or perfume) to a gas which initially is odorless. Odorization is then the action of odorizing the gas.
- the system comprises at least one closed loop circuit and a pipe, the pipe allowing the connection of the closed loop circuit to the gas pipe.
- the closed loop circuit comprises a reservoir of an odorous fluid (tetrahydrothiophene and / or mercaptan for example), preferably in liquid form, a means for circulating the odorous fluid and a pressure control means.
- the components of the closed loop can be placed in series.
- the closed loop circuit connects the means for circulating the fragrant fluid, the reservoir of fragrant fluid and a pressure control means.
- the odorous fluid can be circulated on the closed loop at a pressure greater than the gas pipe (hereinafter, the term “gas” is understood to mean a natural gas or a renewable gas or a combination of one or more of. these gases).
- this overpressure of the closed loop with respect to the gas pipe is 10 to 20 barg, so as to ensure an overpressure despite the existing pressure drops in the pipes and accessories of the system and to ensure stable conditions of the system. , regardless of downstream variations.
- the pressure of the pipe may be less than or equal to that of the closed loop circuit but it remains higher than that of the pipe to allow the introduction of the odorous fluid into the pipe and to prevent gas from rising from the pipe to the pipe, which could damage the system and create a danger.
- the system is configured so that the pressure of the closed loop circuit is greater than or equal to the pressure of the line and so that the pressure of the line is greater than or equal to the pressure of the line.
- the means for circulating the fragrant fluid allows the circulation of the fragrant fluid in the closed loop and can also put the fragrant fluid under pressure.
- the way for circulating the odorous fluid can for example be a pump, for example a positive displacement pump, able in particular to deliver a flow rate between 0.1 and 1.5 l / h.
- the pump may in particular correspond to that of the diagram in Figure 1.
- the pump of the systems according to the prior art such as a diaphragm metering pump, can be reused, which makes it possible to reduce the costs of modifying the odorization system to adapt the existing system to the system of the invention. .
- the use of a pump is also advantageous because it allows the closed loop to be pressurized.
- the pump can also be an HPLC pump (for "High Performance Liquid Chromatography" in English, which means high performance liquid chromatography), that is to say a high performance liquid chromatography pump.
- HPLC pump for "High Performance Liquid Chromatography” in English, which means high performance liquid chromatography
- This type of pump allows a significant reduction in the jolts due to the pump itself, which allows a reduced dispersion of the flow actually injected compared to the flow setpoint given. Thus, the flow rate accuracy is improved.
- This pump is particularly suitable for injections at a very low flow rate (less than 5 g / h).
- the system comprises a pipe connecting the closed loop circuit to the gas pipe, the pipe comprising a means for controlling the flow of odorous fluid.
- This pipe allows the injection of the odorous fluid at a controlled flow rate into the gas pipe for low gas flow rates (from 0.25 to 5 g / h for example) as for higher gas flow rates (from 5 to 25 g / h see more).
- the pipe makes it possible to take part of the odorous fluid circulating in the closed loop, the overpressure prevailing in the closed loop facilitates the removal of the odorous fluid through the pipe.
- the system comprises at least one damping means.
- This damping means makes it possible to reduce the pressure fluctuations and / or the vibrations which may be transmitted to the system, for example the vibrations which may arrive from the environment outside the system, those of the gas pipe or even those which may occur.
- the system comprises at least one damping means for damping (reducing) the vibrations and / or the pressure variations of the system, in particular of the closed loop circuit and / or of the pipe.
- damping protects the various elements of the system from vibrations, and thus increases the life of these elements and reduces the maintenance of these elements, thus increasing the availability of the system.
- the flow control means can in particular comprise a flowmeter, for example a mass flowmeter, the flow rate range of which is chosen to be compatible with the needs for the injection of the odorous fluid, both in natural gas and in a renewable gas. like biomethane (therefore, the flow range measurable by the flowmeter can vary between 0.25 g / h and 25 g / h).
- the flowmeter allows a very precise measurement of the flow of odorous fluid in liquid form, even in the event of low flow between 0.25 g / h and 5 g / h.
- the use of a mass flow meter is particularly advantageous. Indeed, the measurement made from a mass flow meter is only based on the measurement of mass. There is therefore no influence of temperature, pressure or the characteristics of the product being measured. Thus, it is a very reliable measurement and will remain so over time.
- the flow control means can also comprise a micro regulating valve (hereinafter called "micro valve”), preferably placed downstream of the flowmeter, preferably just after the flowmeter.
- micro valve a micro regulating valve
- the flowmeter measurement can be used to control the regulated opening / closing of the micro valve.
- the micro valve can control and regulate the flow very precisely.
- the flow control means in particular the flowmeter and / or the micro regulating valve, can preferably be fixed to the ground and its fixing base is, preferably, independent of that of the means of circulating the odorous fluid (a pump in particular) and any equipment that can cause vibrations.
- the damping means can then comprise elastic or flexible dampers (for example made of rubber or plastic or other materials meeting elasticity and damping criteria) at the level of the attachment of the flow control means. on the ground to reduce the vibrations transmitted to this device (to the flowmeter and / or to the micro valve in particular).
- flow control is improved, in particular for low flow rates (less than 5 g / h).
- the odorous fluid can comprise tetrahydrothiophene (of chemical formula C 4 H 8 S and called THT in the document), mercaptan, and / or equivalent products.
- THT and mercaptan are usually used to impart the characteristic odor known to natural or renewable gases, these gases being naturally odorless. This characteristic odor makes it possible to detect any leaks of natural gas or renewable gas. Thus, they can avoid or limit the explosive risks or the risks of over inhalation of gas, which can prove to be lethal.
- the pressure control means may comprise a first regulator, and preferably also include a pressure indication means.
- a first regulator also called upstream pressure reducer
- a first regulator is a piece of equipment which regulates the pressure of the fluid upstream (in the direction of flow of the fluid) of its own installation. It is used to limit the excess pressure of the gas or liquid network, subject to variations.
- the first regulator can preferably be positioned downstream and close to the junction between the closed loop and the pipe, so as to regulate in a most precise and efficient manner the pressure entering the pipe.
- the first regulator can, for example, be adjusted by hand.
- a means of indicating the pressure such as a pressure gauge for example, placed just upstream of the first regulator, preferably between the junction between the closed loop and the first regulator, can help. the user to regulate the pressure thanks to the first regulator by controlling the pressure indicated on the means of indication of the pressure, this in a reliable, simple and precise way.
- the pressure indication means can observe the pressure in the closed loop by the pressure indication means and manually adjust the pressure using the first regulator.
- the pressure control means can be a first regulator controlled automatically.
- the means of indicating the pressure is no longer essential and the control of the pressure is simplified.
- the pipe may comprise a valve, the valve being positioned upstream of the flow control means.
- the valve is used to prevent the closed loop circuit and pipe from building up to too high a pressure, which pressure could damage the system and cause injury to persons. If the pressure sensed by the valve is above a certain threshold, the valve opens, allowing the closed loop circuit and line to reduce pressure very quickly (almost instantly).
- the position of the valve on the pipe, just upstream of the flow control means makes it possible to avoid overpressure both in the closed loop and in the pipe.
- it makes it possible to protect the means for controlling the flow rate from an overpressure, the means for controlling the flow being a sensitive means.
- the range of injection flow rate of the flow control means may be between 0.25 g / h and 25 g / h.
- the flow control means (the flow meter for example) is configured to inject the odorous fluid at a flow rate of between 0.25 g / h and 25 g / h.
- the flowmeter can have an injection flow rate range of between 0.25 g / h and 25 g / h so as to allow the injection, both at low pressures and at high pressures, of odorous fluid in natural gas or in renewable gas whose flow rates are considerably different, as mentioned previously.
- the fragrant fluid can be in liquid form at least until the flow control means, preferably until it enters the gas line.
- the system is simple and controllable.
- the pipe may include filtration means, such as a filter, positioned upstream of the flow control means.
- filtration means such as a filter
- This filtration means makes it possible to protect the flow control means, in particular a flowmeter and / or a micro valve, and to prevent the orifice or orifices of this flow control means from being blocked.
- the flow control means in particular if it comprises a flow meter or a micro valve, perhaps a sensitive device.
- the porosity of this filtration means can be between 5 and 15 ⁇ m.
- At least one damping means may comprise at least part of the pipe of the system according to the invention in the form of turns.
- a part of the pipe may include turns (in other words spiral tubes, or in other words, the generator of the tubes follows a helical portion) to dampen the vibrations of the means for circulating the odorous fluid (the pump for example) and / or dampen residual pressure fluctuations.
- the pipe may include turns just (i.e. directly) after its junction with the closed loop, so as to reduce vibrations and pressure fluctuations transmitted to the flow control means.
- the pipe may alternatively or additionally comprise a part in turns, just (that is to say directly) before its junction with the gas pipe, so as to avoid the transmission of vibrations and pressure fluctuations of the pipe by means of flow control.
- the pipe can comprise between 15 and 20 turns, with a diameter between 40 and 60 mm with a pitch of between 5 and 20 mm between the turns, so as to effectively reduce vibrations and pressure fluctuations.
- At least one damping means may comprise, alternatively or in addition, an anti-pulsation pot and / or a second regulator.
- These different elements effectively dampen vibrations and pressure fluctuations.
- the combination of these elements makes it possible to minimize vibrations and pressure fluctuations, gradually smoothing them out.
- the multiplicity of damping means makes it possible to obtain a flow that is better and better controlled and more and more precise. This is particularly useful when the flow rate is low (less than 5 g / h) and therefore particularly useful for the injection of renewable gas, such as biogas and more specifically biomethane.
- a second regulator as damping means, can be positioned on the closed loop circuit, preferably just downstream of the means for circulating the odorous fluid (the pump for example) and upstream of the junction between the closed loop circuit and the pipe, which makes it possible to absorb the jolts caused by the means of circulating the odorous fluid, for example the pump. It thus cuts off pressure surges. Preferably, it can induce a pressure drop of between 2 and 5 barg to obtain optimum shock absorption efficiency.
- An anti-pulsation pot (also called an anti-pulsation balloon or anti-pulsation bottle), which is a damping means, can also be positioned on the closed loop, preferably between the means for circulating the odorous fluid and the junction between the closed loop and the pipe, so as to damp the vibrations of pressure variations.
- the anti-pulsation pot can be positioned downstream of the second regulator used as a damping means.
- a second overflow absorber can be positioned which absorbs the jolts and an anti-pulsating pot finalizing the damping of pressure variations, before the junction between the closed loop and the pipe.
- the pipe may comprise a means for regulating the upstream pressure (that is to say the pressure situated upstream of the means for regulating the pressure) positioned between the means for controlling the pressure. gas flow and pipeline.
- This means of regulating the upstream pressure ensures a stable pressure a few bars greater than the pressure of the gas pipe, thus allowing the injection of the odorous fluid into the gas and preventing the entry of gas into the pipe and possibly into the gas pipe. closed loop.
- This means for regulating the upstream pressure can in particular be an overflow valve (called a third overflow valve).
- This means of regulating the upstream pressure makes it possible to avoid, by means of flow control (in particular the mass flow meter and possibly the micro valve) being subjected to variations in the conditions of the gas circulating in the pipe. This makes it possible to improve the stability of the pressure at the level of the flow control means, its proper functioning, its accuracy and to ensure a stability of the flow of odorous fluid injected.
- flow control in particular the mass flow meter and possibly the micro valve
- the system may include a means for analyzing the gases and a monitoring device.
- the gas analysis means such as an analyzer, can be positioned on the gas pipe downstream of the injection of the odorous fluid into the pipe (therefore after the junction between the pipe and the pipe, in the direction of gas circulation in the gas pipe) to know the mixing rate and the mixing quality of gas and odorous fluid.
- the control device is connected, for example electrically, on the one hand by means of gas analysis and on the other hand by means of flow control. Therefore, the information from the gas analysis is used by the control device to increase or decrease the setpoint of the flow control means, in order to better regulate the injection flow of the odorous fluid in the pipe.
- real-time flow control is improved.
- the pipeline generally conventionally includes analysis means for controlling the injection and / or mixing of the gases, flow control is improved without a significant increase in the cost of the system.
- the means of analysis can be a means of analysis by gas chromatography, such as a GC analyzer (GC for "Gas Chromatography” meaning gas chromatography).
- GC Gas Chromatography
- the means of analysis is particularly suitable for the analysis of gases.
- this type of analysis is very precise, which improves the efficiency of the system.
- a precision measuring means such as a balance
- a precision measuring means is positioned under the reservoir to evaluate its complete or residual filling with liquid, as well as the instantaneous, partial or total consumption of the odorous fluid. It is thus possible to anticipate tank changes or to install a remote warning of a predetermined low level threshold. It is in fact possible to measure the mass of the tank and estimate the filling of the tank and it is thus possible to use the filling information to control the flow control means.
- the information from the precision measurement means for example the balance, can also be correlated with the flow measurement means for a cross check of consumption, which can potentially provide reading and monitoring of the odor index of the gas with or without the redundancy of a chromatographic measurement system.
- the balance can be a precision balance so as to improve the measurement accuracy.
- the system may include a capillary injection rod.
- capillary injection nozzle is meant an injection nozzle with a small internal diameter (internal diameter less than 2 mm). Therefore, the injection nozzle is particularly suitable for low flow injection in pipes with small internal diameters.
- the capillary injection tube ensures that there is no flow and no flow, which prevents unwanted flow of liquid in the gas line.
- the system can comprise a heating system to promote the vaporization of the odorous fluid, initially in liquid form.
- the heating system can be positioned on the pipe, so as to keep the fragrant fluid in liquid form in the closed loop and to vaporize this fragrant fluid as close as possible to the injection of the fragrant fluid into the pipe.
- the heating system is positioned between the flow control means and the junction of the pipe with the pipe.
- the odorous fluid is in liquid form when it passes through the flowmeter, which allows better control of the flow.
- the vaporization of the odorous fluid takes place just before the injection of the odorous fluid into the gas pipe, so as to improve the injection and the mixing of the odorous fluid with the gas which can be a natural gas, a renewable gas such as biogas and more particularly biomethane.
- the invention also relates to a method for odorizing a gas circulating in a pipe.
- the method according to the invention can advantageously be implemented by means of the system according to any one of the variants or combinations of variants described above.
- the method according to the invention comprises at least the following steps:
- an odorous fluid is made to rotate in a closed loop, for example by means of the means for circulating the odorous fluid (a pump for example) of the system described above;
- the pressure of the closed loop is adjusted, for example via the pressure control means (a first regulator with possibly a manometer or another pressure indicator) of the system described above; - Part of the odorous fluid is removed, for example by means of the flow control means of the pipe of the system described above; optionally, the odorous fluid is filtered before it passes through the flow control means
- the pressure control means a first regulator with possibly a manometer or another pressure indicator
- the vibrations and pressure fluctuations are damped, preferably at least upstream of the flow control means to improve the precision of the flow rate and even more preferably upstream and downstream of the flow control means to minimize the inaccuracies associated with the flow rate. vibrations and pressure variations which could be caused by the system or the gas line.
- at least one damping means is used, preferably several damping means of the system described above.
- the odorous fluid is injected into the gas pipe, the flow of the odorous fluid being controlled by the flow control means of the system described above, the injection flow of the odorous fluid being slaved to the gas flow of the pipeline.
- the method makes it possible to control the injection rate of the odorous fluid in the gas line in a precise and efficient manner.
- This method also allows rapid adaptation of the system when the flow rate setpoint is changed. It is particularly effective at low injection flow rates by damping vibrations and pressure fluctuations.
- the odorous fluid can be injected into the gas line at a flow rate of between 0.25 and 25 g / h.
- the system can be used both for the injection of odorous fluid in natural gas and in renewable gas such as biomethane, and this for both low pressures and high pressures.
- the injection rate of the odorous fluid in the flow control means by gas analyzes carried out in the gas pipe downstream of the injection of the odorous fluid in the pipe. gas.
- a gas analysis means such as an analyzer.
- an analyzer As a result, it is possible to know the injection rate actually injected of the odorous fluid into the gas and the quality of the mixture.
- These data can then be used to modify the flow setpoint of the flow control means, thanks to a control device which recovers and analyzes the data from the gas analysis means and which modifies the setpoint of the flow control means.
- a gas chromatography analyzer which is particularly suitable for gas analysis can be used.
- the system and the method according to the invention can advantageously be adapted from existing systems, in particular by reusing the pump as in Figure 1 of the prior art.
- the costs of adapting existing systems are therefore reduced.
- FIG. 2 illustrates, schematically and without limitation, a first embodiment of the system according to the invention.
- the system comprises a reservoir R containing the fragrant fluid, preferably in liquid form, a means for circulating the fragrant fluid, here a pump P, a pressure control means MP and a damping means. MAM.
- the pump P, the pressure control means MP, the MAM damping means and the reservoir R being connected, preferably in series, to form a closed loop circuit.
- the pressure control means MP makes it possible to regulate this pressure.
- the MAM damping means is positioned on the closed loop downstream of the pump P, between the pump P and the junction between the closed loop circuit and the pipe, to reduce the jolts of the pump and thus limit the inaccuracy of the MD flow control means.
- a pipe connects the closed loop circuit to the gas supply line V.
- the junction between the pipe and the closed loop is positioned between the MAM damping means and the MP pressure control means.
- a flow control means MD which can include a mass flow meter and a micro valve slaved to the mass flow meter.
- This pipe could also include, in a nonlimiting manner, one or more damping means, such as parts of spiral tubes, overflow valves and / or anti-pulsating pots to further improve flow control, by isolating the means of flow control of disturbances related to its environment.
- FIG. 3 illustrates, in a schematic and non-limiting manner, a second embodiment of the system according to the invention.
- the system comprises a reservoir R containing the fragrant fluid, preferably in liquid form, a means for circulating the fragrant fluid, here a pump P, a pressure control means MP and a damping means. MAM.
- the pump P, the means of controlling the pressure MP, the MAM damping means and the reservoir R being connected to form a closed loop circuit.
- the pressure control means MP makes it possible to regulate this pressure.
- the tank R is here and in a nonlimiting manner maintained under a nitrogen supply, materialized by the dotted arrow arriving in the tank R, the nitrogen being at a pressure between 0.1 and 0.5 barg.
- a valve S2 makes it possible to avoid any overpressure in the nitrogen supply circuit.
- the MAM damping means is positioned on the closed loop downstream of the pump P, between the pump P and the junction between the closed loop circuit and the pipe, to reduce the jolts of the pump and thus limit the inaccuracy of the MD flow control means.
- a pipe connects the closed loop to the gas supply line V.
- the junction between the pipe and the closed loop is positioned between the MAM damping means and the MP pressure control means.
- On this pipe are positioned successively from upstream to downstream (from the closed loop to the gas pipe), a valve S to prevent any overpressure in the system, a filter F and a flow control means MD which may include a mass flowmeter and a micro valve slaved to the mass flowmeter, the filter making it possible to prevent clogging or degradation of the flowmeter or of the micro valve.
- This pipe could also include one or more damping means, such as parts of spiral tubes, overflow valves and / or anti-pulsating pots to further improve flow control, by isolating the flow control means from disturbances. related to its environment.
- a gas analysis means here a GC analyzer
- a gas analysis means here a GC analyzer
- a GC analyzer is placed on the pipe V downstream of the injection of odorous fluid into the pipe (downstream in the gas flow direction of the pipe) .
- This data is sent to a DC control device, the information sent being represented by dotted arrows. From this information, the control device can modify the flow setpoint of the flow control means MD to increase or reduce the flow.
- the information sent to or from the DC control device (with regard to the flow setpoint) can be sent by electric cables or by remote data transmission such as WIFI for example.
- FIG. 4 illustrates, in a schematic and non-limiting manner, a third embodiment of the system according to the invention. References with the same name as those of FIG. 2 or FIG. 3 correspond to the same elements and will therefore not be redetailed.
- the first damping means is a regulator D1 and the second damping means is an anti-pulsating pot PAP, so as to damp the vibrations and pressure fluctuations resulting from in particular the P.
- this part in TS turns is a part of the pipe which is made from a spiral tube.
- a regulator D2 Downstream of the flow control means MD and just before the junction between the pipe and the gas pipe V, a regulator D2 is installed which makes it possible to ensure a slight overpressure in the pipe compared to the pressure of the pipe of gas V.
- a part of the pipe in the form of turns could also be integrated to further limit the vibrations and pressure fluctuations and thus improve the precision and the stability of the means of flow control.
- a heating system C Downstream of the regulator D2 and before the injection of the odorous fluid into the gas pipe V (that is to say before the junction between the pipe and the gas pipe), a heating system C can be positioned on the gas pipe. conduct. Heating the odorous fluid before injection facilitates its dispersion and / or vaporization after its injection into the pipe, the odorous fluid remaining in liquid form until it is injected. The distribution of the fragrant fluid in the pipe improves the mixing properties between the fragrant fluid and the gas of the V pipe.
- Figure 8 illustrates, schematically and without limitation, a fourth embodiment of the system according to the invention.
- the references bearing a name identical to those of FIG. 2, of FIG. 3 and / or of FIG. 4 correspond to the same elements and will therefore not be redetailed.
- Figure 8 differs from Figure 4 by adding several elements.
- a precision measuring means BAL here composed of a balance, is positioned under the tank R. This balance measures the mass of the tank and makes it possible to determine the filling rate. It therefore makes it possible in particular to know whether a change of tank is necessary.
- the system of Figure 8 also includes a CINJ capillary injection rod positioned at the end of the pipe opening into the gas line V.
- This CINJ capillary injection tube has a small diameter (less than 2 mm). It is through this CINJ capillary injection rod that the fragrant fluid is introduced into the gas line V.
- the system also includes a CMD control device.
- This CMD control device is connected by inputs / outputs to various devices of the odorisation system.
- the inputs / outputs are represented by the dashed lines.
- the CMD control device is in particular in relation to the precision measurement means BAL which allows it to know the filling level of the reservoir R. This information is taken into account by the CMD control device to control the flow control means. MD.
- the control device CMD is also linked to the flow control means MD.
- the flow rate control means MD is essentially controlled as a function of the gas flow rate of the pipe V.
- the control device CMD is also in relation with the pipe so as to know the flow rate passing through it.
- other elements of the system can be related to the CMD control device.
- Figure 5 illustrates, as a function of time T (in hours) the flow measurements Deb1 (in g / h) and the masses of water injected PB1 (in g) measured by a precision balance, so as to check whether the flow rate injected by the flowmeter and the micro valve is correct, regular and continuous, at a constant pressure of around 70 barg.
- the left ordinate PB corresponds to the measurements of water masses injected in g at each instant T and the right ordinate D (in g / h) corresponds to the flow rates at each instant T.
- the Deb1 flow rate curve shows that the flow rate is first maintained at 0.5 g / h between OH and around 50H, then suddenly drops to around 1 g / h up to around 65H then suddenly drops back down to 0.5 g / h.
- the PB1 curve illustrates the mass of water instantly injected. It is observed that this curve PB1 is bilinear. The first substantially constant slope, corresponding to the phase located between 0 and 50H where the flow rate is approximately 0.5 g / H then the second slope, also substantially constant, is steeper and extends over the second phase between 50H and 65H.
- FIG. 6 illustrates examples of variations in pressure setpoints Pr1 and flow rates C1 and the flow response Db1 provided by the system corresponding to figure 4 (without the heating system), as a function of time T.
- the x-axis corresponds to time T in minutes.
- the left ordinate axis D corresponds to the flow rates D in g / h for the flow rate setpoint curves C1 and for the flow rate curves actually injected Db1.
- the y-axis Pr located on the right, corresponds to the pressure in barg.
- the curve Pr1 corresponds to the pressure Pr in bar. Over the 180 minutes, the pressure Pr1 is almost constant and close to 18 barg then it increases suddenly to reach about 80 barg and remain at an almost constant level close to 80 barg.
- the flow rate setpoint C1 is initially at 1 g / h then passes to 0.25 g / h, increases to pass to 0.5 g / h, is then again reduced to 0.25 g / h, then passes to 1 g / h and approximately 180 minutes, it increases to reach 5 g / h and finally it goes back to 1 g / h.
- the curve Db1 follows the variations of the setpoint curve C1 with a low dispersion.
- the modifications of setpoint C1 are almost immediately followed by the modifications of the applied flow rate Db1 corresponding to the setpoint C1.
- the Db1 flow rate fluctuations are relatively small, which testifies to good precision and good stability of the Db1 flow rate.
- the system according to the invention exhibits good dynamic behavior during setpoint modification and rapid adaptation to new flow setpoints.
- Figure 7 shows a comparison between a solution according to the invention using a pp1 positive displacement diaphragm metering pump type pump, named after the manufacturer, and an HPLC pump.
- the diaphragm metering pump type displacement pump pp1 is that used in the system of Figure 1 of the prior art for the injection of odorous gas THT into natural gas. Using this pump for the invented system keeps the cost down by reusing the existing pump.
- the HPLC pp2 pump is a pump that limits jolts and thus reduces variations in injected flow by improving control of the injected flow.
- the injected flow rate D in g / h as a function of time T in minutes is observed by virtue of the various measurement points materialized by the points represented in the figure.
- the pump used is the volumetric pump pp1 of the diaphragm metering pump type and a dispersion of the measured flow rate is observed between 0.2 and 0.4 g / h for a setpoint at 0.25 g / h.
- the flow rate is stable and precise, especially for the very low setpoint.
- the pump used is the HPLC pp2 pump. It is observed that the use of this pump makes it possible to considerably reduce the dispersion of the measured flow rate, the measured flow rate varying between 0.25 and 0.27 g / h.
- the operation of the system according to the invention is therefore improved with an HPLC type pump, in particular by a more precise and more stable flow rate, in particular for very low flow rates (less than 0.5 g / h).
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Treating Waste Gases (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2002688A FR3108386B1 (en) | 2020-03-19 | 2020-03-19 | Gas odorization system and method |
PCT/EP2021/056308 WO2021185688A1 (en) | 2020-03-19 | 2021-03-12 | System and method for odorising a gas |
Publications (1)
Publication Number | Publication Date |
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EP4121499A1 true EP4121499A1 (en) | 2023-01-25 |
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ID=70738724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21710326.6A Pending EP4121499A1 (en) | 2020-03-19 | 2021-03-12 | System and method for odorising a gas |
Country Status (3)
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EP (1) | EP4121499A1 (en) |
FR (1) | FR3108386B1 (en) |
WO (1) | WO2021185688A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4237473B2 (en) | 2002-11-29 | 2009-03-11 | 株式会社Ihi | Chemical injection method and apparatus |
JP2005133785A (en) | 2003-10-29 | 2005-05-26 | Ishikawajima Harima Heavy Ind Co Ltd | Supplying device |
FR2895915B1 (en) * | 2006-01-11 | 2009-02-06 | Collard Et Trolart Thermique S | DEVICE FOR DEGASSING WATER BEFORE INTRODUCING IT TO A CIRCUIT AND CORRESPONDING APPLICATIONS. |
FR3001523B1 (en) * | 2013-01-31 | 2015-11-13 | Air Liquide | MANAGEMENT OF BIOMETHANE FEEDING OF A NATURAL GAS NETWORK FROM BIOGAS PRODUCTION |
FR3006610B1 (en) * | 2013-06-10 | 2015-07-03 | Gdf Suez | SYSTEM AND METHOD FOR INJECTING LIQUID ODORING IN NATURAL GAS PIPING |
CN208090322U (en) | 2017-12-25 | 2018-11-13 | 北京华福工程有限公司 | Liquefied gas device for adding odor |
-
2020
- 2020-03-19 FR FR2002688A patent/FR3108386B1/en active Active
-
2021
- 2021-03-12 WO PCT/EP2021/056308 patent/WO2021185688A1/en unknown
- 2021-03-12 EP EP21710326.6A patent/EP4121499A1/en active Pending
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FR3108386B1 (en) | 2023-04-28 |
WO2021185688A1 (en) | 2021-09-23 |
FR3108386A1 (en) | 2021-09-24 |
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