EP3007810A1 - System and method for injecting liquid odorant into a natural gas pipeline - Google Patents
System and method for injecting liquid odorant into a natural gas pipelineInfo
- Publication number
- EP3007810A1 EP3007810A1 EP14739873.9A EP14739873A EP3007810A1 EP 3007810 A1 EP3007810 A1 EP 3007810A1 EP 14739873 A EP14739873 A EP 14739873A EP 3007810 A1 EP3007810 A1 EP 3007810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- odorant
- injectors
- gas
- injection
- pressure
- 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.)
- Granted
Links
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
- C10L3/006—Additives for gaseous fuels detectable by the senses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
- B01F23/21321—High pressure atomization, i.e. the liquid is atomized and sprayed by a jet at high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
- B01F25/31424—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations aligned in a row perpendicular to the flow direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
- B01F25/31425—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the axial and circumferential direction covering the whole surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2111—Flow rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
-
- 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
- B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
- B05B12/04—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for sequential operation or multiple outlets
-
- 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
- B05B12/12—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 conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
-
- 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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/10—Function and purpose of a components of a fuel or the composition as a whole for adding an odor to the fuel or combustion products
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/02—Mixing fluids
- F17C2265/025—Mixing fluids different fluids
- F17C2265/027—Mixing fluids different fluids with odorizing
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2499—Mixture condition maintaining or sensing
- Y10T137/2501—Dividing and recombining flow
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2514—Self-proportioning flow systems
- Y10T137/2521—Flow comparison or differential response
- Y10T137/2529—With electrical controller
Definitions
- the present invention relates to the general field of odorization of natural gas, and more specifically relates to a system and a method for injecting liquid odorant into a natural gas pipeline.
- Natural gas is odorless. Because of its potentially dangerous nature, current regulations require the addition of an odorant to natural gas piping so that it can be detected by its odor. Pure or mixed odorants such as tetrahydrothiophene (referred to as THT) or tert-butyl mercaptan (designated by the acronym TBM) are generally used for this operation.
- THT tetrahydrothiophene
- TBM tert-butyl mercaptan
- Odorant injection systems in liquid form in a natural gas pipeline are generally sized to be effective at the maximum flow rate of observable gas at the injection site.
- known odorant injection systems of the prior art become less effective, which can lead to odorization defects of the gas.
- Another known system is that of injection and pump systems in which the liquid odorant is injected directly into the gas pipe by means of a membrane pump or by injecting the odorant with gas under pressure.
- the liquid odorant evaporates in the gas by the use of an injection cane comprising a porous material or after a coarse spray.
- the present invention therefore has the main purpose of providing a system and a liquid odorant injection method in a natural gas pipeline that do not have the aforementioned drawbacks.
- a liquid odorant injection system in a gas pipeline comprising a reservoir containing odorant in liquid form, a high-pressure pump connected to the reservoir, a common injection rail supplied with liquid odorant by the high-pressure pump, a plurality of odorant injectors fed with liquid odorant under pressure by the common injection rail and intended to inject odorant into the gas pipe to cause its atomization in the gas pipe, and an electronic injection computer for controlling the injectors and the pump high pressure.
- the pressure in the common injection rail is maintained at a high value by the high-pressure pump.
- the injection pressure of the odorant at the outlet of the injectors can therefore be high, which ensures an odor / gas mixture optimized in the gas pipeline. More precisely, by reducing the outlet section of the injectors and thanks to a high pressure at the outlet of the injectors, it is possible to increase the speed of injection of the liquid odorant into the gas pipeline.
- the difference in velocities between the flow of natural gas in the gas pipeline and that of the odorant injection causes a quasi-instantaneous atomization of the odorant during its injection (the continuous jet of liquid odorant is transformed into a mist of odorant droplets of diameter of the order of a few microns). This results in an optimization of the odorant / gas mixture.
- the control of the injectors by an electronic injection computer makes it possible to precisely control the quantities of odorant injected, in particular as a function of the flow of gas in the gas pipeline.
- the "odorizable" gas flow rate range can be increased by dividing the flow rate of odorant to be injected by the use of several injectors.
- the pressurization of the liquid odorant (by the high-pressure pump) can be physically separated from the regulation of the quantities of odorant injected (by the injectors), which avoids any defusing of the high-pressure pump related to the defects. sealing.
- the injection system according to the invention has a relatively small footprint compared to injection systems of the prior art, so that it is possible to install directly on the gas piping, and possibly install several systems in parallel for the odorization of high gas flows.
- the system further comprises a sensor for measuring the flow of gas connected to the electronic injection computer and for measuring the flow of gas flowing in the natural gas pipe upstream of the injectors.
- a sensor for measuring the flow of gas connected to the electronic injection computer and for measuring the flow of gas flowing in the natural gas pipe upstream of the injectors.
- the common injection rail comprises a pressure limiting device.
- a pressure limiting device makes it possible to control the pressure in the common injection manifold and thus avoid any overpressure in the injectors that can cause their malfunctions.
- the injectors may be electrohydraulic injectors solenoid controlled or piezoelectric actuator.
- the system may further include a filter interposed between the reservoir and the high pressure pump.
- the injectors can be fixed on the same sleeve which is intended to be mounted on the gas pipe by a flange mounting.
- the installation of such a system on a gas pipeline is simplified and does not require special civil engineering.
- the cuff with its injectors can be manufactured entirely in the factory, which facilitates the performance of qualification tests and maintenance operations.
- the invention also relates to a method for injecting liquid odorant into a natural gas pipeline, comprising feeding by a high-pressure pump a common injection rail in liquid odorant from a reservoir, said ramp common injection being connected to a plurality of injectors opening into a gas pipe, and the control of the injectors from an electronic injection computer for injecting a predetermined volume of liquid odorant into the gas pipe at a predetermined pressure so as to cause the atomization of the odorant in the gas pipeline.
- the common injection rail can be supplied with liquid odorant at a pressure of between 200 and 2000 bar and the pipe gas can be supplied with natural gas at a pressure between 1 and 100 bar.
- FIG. 1 is a schematic view of an injection system according to the invention.
- FIG. 2 is a partial view of an injection system according to the invention showing a sleeve on which are fixed several injectors of the injection system;
- FIGS. 3A and 3B illustrate the operation of an electrohydraulic injector that can be used in the injection system according to the invention.
- FIG. 4 is a schematic view showing an alternative embodiment of an injection system according to the invention. Detailed description of the invention
- FIG. 1 schematically represents a system 10 for injecting liquid odorant into a gas pipeline 12 according to the invention.
- This injection system 10 comprises in particular a reservoir 14 containing odorant which is in liquid form.
- the liquid odorant is typically tetrahydrothiophene or thiophane (regularly referred to as THT).
- THT tetrahydrothiophene
- thiophane regularly referred to as THT
- TBM tert-butyl mercaptan
- the reservoir 14 is connected to a high-pressure pump 16 with interposition between these elements of a filter 18.
- This high-pressure pump is sized to allow the maximum flow rate of odorant necessary to be sent at a pressure of between 200 and 2000. bars around.
- the high-pressure pump 16 continuously feeds under pressure liquid odorant a common injection rail 20.
- This pump high pressure 16 is for example a rotary pump known to those skilled in the art.
- the common injection rail 20 is a hydraulic accumulator which constitutes a reserve of liquid odorant under high pressure. This ramp distributes uniformly the liquid odorant to several injectors 100 (here four in number), that is to say that the ramp feeds the injectors at the same pressure and with the same amount of liquid odorant.
- the injectors 100 make it possible to obtain atomization of the liquid odorant in the gas pipe 12 by vaporization of the odorant in contact with the natural gas flowing in the gas pipe.
- the injectors 100 make it possible to inject into the gas line 12 a jet of liquid odorant which is transformed into a "spray", that is to say into a cloud of odorant droplets (of order of a few microns) which favors the mixing of the odorant in the flow of natural gas.
- the jet of liquid odorant disintegrates immediately because of the very large difference in speed between the injected liquid and the natural gas flowing in the gas pipe (we speak of atomization of the odorant).
- the injectors 100 may advantageously be fixed on the same sleeve 22 of the gas pipe, this sleeve being mounted directly on the gas pipe 12 (for example by a flange mounting).
- a sleeve is a tube element inserted between two portions of existing pipeline and to ensure the continuity of the transport of natural gas.
- the injectors 100 may be regularly spaced angularly from each other over the entire circumference of the sleeve 22 so as to allow the injection of odorant as uniform as possible.
- An electronic injection computer 24 is electrically connected to the injectors 100 and the high-pressure pump 16 to control them (electrical connections 26 in Figure 1).
- the electronic injection computer makes it possible to control the quantity of odorant which is injected by each injector, as well as the duration of injection.
- the injectors 100 are electrohydraulic injectors solenoid controlled or piezoelectric actuator that allow electronic control of the duration of the injection and the exact amount of odorant to be injected.
- FIGS. 3A and 3B schematically show the operation of an example of an electrohydraulic injector 100 of the solenoid-controlled type that can be used for the invention.
- the injector 100 is composed of two parts, namely a lower part 102 which constitutes the injector itself (often called a nozzle), and an upper part 104 which constitutes the control device electric injector.
- the solenoid valve 106 which is controlled by electrical pulses from the electronic injection computer 24 is supplied. Its magnetic core compresses the return spring 108 which raises the ball 110 of its seat and thus allows the leak towards the return circuit 124 (FIG. 3B) making it possible to return the odorant to the reservoir 14.
- the nozzle of the circuit of FIG. supply 126 avoids the balancing of the pressures, which has the effect of lifting the needle of the injector 120 which discovers the injection hole or holes 122.
- the solenoid valve 106 When closing the injector, the solenoid valve 106 ceases to be activated so that the return spring 108 pushes the magnetic core and causes the bubble 110 on its seat to close the leaks. The pressure equilibrates again between the control chamber 112 and the pressure chamber 114. The return spring 108 pushes the needle on its sealing surface to close the injection hole or holes 122.
- the injector 100 operates in the manner of a solenoid valve, opening and closing very quickly to inject into the gas line the exact amount of odorant that sets the electronic injection computer 24.
- the flow of odorant injected by each injector depends on the pressure in the common injection manifold 20, the opening time of the needle of the injector 120 and the diameter of the injection hole or holes 122.
- the odorant in liquid form has a pressure of between 200 and 2000 bar, whereas the natural gas typically flows in the gas pipe 12 at a pressure of between 1 and 100 bar.
- This high pressure difference associated with a small diameter of the injection hole (s) 122 of the injectors (typically of the order of 0.1 to 0.2 mm), causes a large difference in speeds between the flow of natural gas in the gas pipeline and the injection of the odorant at the outlet of the injectors. This difference in speed is at the origin of the almost instantaneous atomization of the odorant during its injection into the gas pipeline.
- control of the injectors can be performed by a piezoelectric actuator instead of the solenoid valve.
- a piezoelectric actuator is typically composed of several layers of quartz whose property is to deform when they receive an electrical pulse from the electronic injection computer. Such an injector control is particularly fast.
- the electronic injection computer 24 receives operating information from the high-pressure pump 16 and the common injection rail 20 by electrical connections. 28.
- the sensor 30 may be a well known orifice plate of the skilled in the art to perform a measurement of gas flow.
- Such a sensor 30 is electrically connected by a link 32 to the electronic injection computer 16 to inform it in real time of the flow of gas flowing in the gas pipe upstream of the injectors 100.
- the electronic injection computer can precisely control the quantities of odorant injected as a function of the gas flow in the gas pipe and adjust them especially in case of decrease of the flow.
- the common injection rail 20 comprises a pressure-limiting device 34.
- This pressure-limiting device has the function of controlling the pressure in the common injection rail and of returning the flow of odorant in excess of to the tank 14 via a controlled leak (connected to the return circuit 124).
- FIG. 4 represents an injection system 10 'according to an alternative embodiment of the invention.
- the injection system 10 has a main gas line 12 which is divided into several secondary lines 12a (here the number of 3).
- Each secondary gas channel 12a comprises its own liquid odorant injection module 200 (each module contains a high-pressure pump, a common injection rail and an electronic injection computer not shown in FIG. 4).
- Each injection module 200 is connected to the same liquid odorant tank (not shown in the figure) and to a plurality of injectors 100 opening into the corresponding secondary gas line. Upstream of the injectors, there is provided, for each secondary gas channel 12a, a gas flow measurement sensor 30 (for example an orifice plate).
- a gas flow measurement sensor 30 for example an orifice plate.
- Such an injection system makes it possible to increase the effective odorization range by allowing the circulation and the odorization of natural gas in several secondary pipelines of gas as a function of the flow of natural gas circulating in the structure.
- the injection modules 200 being independent of each other, they can rescue each other if necessary.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1355338A FR3006610B1 (en) | 2013-06-10 | 2013-06-10 | SYSTEM AND METHOD FOR INJECTING LIQUID ODORING IN NATURAL GAS PIPING |
PCT/FR2014/051398 WO2014199069A1 (en) | 2013-06-10 | 2014-06-10 | System and method for injecting liquid odorant into a natural gas pipeline |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3007810A1 true EP3007810A1 (en) | 2016-04-20 |
EP3007810B1 EP3007810B1 (en) | 2017-05-31 |
Family
ID=49212825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14739873.9A Active EP3007810B1 (en) | 2013-06-10 | 2014-06-10 | System and method for injecting liquid odorant into a natural gas pipeline |
Country Status (6)
Country | Link |
---|---|
US (1) | US10179882B2 (en) |
EP (1) | EP3007810B1 (en) |
CA (1) | CA2915087C (en) |
ES (1) | ES2638860T3 (en) |
FR (1) | FR3006610B1 (en) |
WO (1) | WO2014199069A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3039878B1 (en) * | 2015-08-07 | 2018-10-26 | Snef | METHOD FOR SUPPLYING AN INSTALLATION INTO A GAS FLOW, FEEDING DEVICE AND ASSEMBLY COMPRISING SUCH A DEVICE |
DE102015217814A1 (en) * | 2015-09-17 | 2017-03-23 | Rwe Deutschland Ag | Device for feeding a liquid odorant into a gas network |
FR3048623A1 (en) * | 2016-03-08 | 2017-09-15 | Engie | DEVICE AND METHOD FOR ODORIZING GAS IN CIRCULATION IN A CANALIZATION |
US10344237B2 (en) | 2017-04-13 | 2019-07-09 | Welker, Inc. | System and method for odorizing natural gas |
DE102019112964A1 (en) * | 2019-05-16 | 2020-11-19 | Westnetz Gmbh | Injection device for injecting a liquid odorant into a gas stream flowing through a gas line, its use and method for its production |
FR3108386B1 (en) * | 2020-03-19 | 2023-04-28 | Ifp Energies Now | Gas odorization system and method |
NL2029226B1 (en) * | 2021-09-22 | 2023-03-29 | Stichting NHL Stenden Hogeschool | Odorization device for combustable gas and method for dispensing odour gas in a gas flow |
CN117753292B (en) * | 2024-02-22 | 2024-04-26 | 辽宁厚安科技有限公司 | Mixing equipment is put in to natural gas sulfur-free odorizing agent |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL268636A (en) * | 1960-08-25 | 1900-01-01 | ||
US3634053A (en) * | 1970-04-06 | 1972-01-11 | Inst Gas Technology | Odorization method and apparatus |
US4025315A (en) * | 1971-05-19 | 1977-05-24 | San Diego Gas & Electric Co. | Method of odorizing liquid natural gas |
US3907515A (en) * | 1972-10-02 | 1975-09-23 | San Diego Gas & Electric Co | Apparatus for odorizing liquid natural gas |
DE7242602U (en) * | 1972-11-20 | 1976-04-29 | Hoogovens Ijmuiden B.V., Ijmuiden (Niederlande) | |
US4487613A (en) * | 1983-09-26 | 1984-12-11 | International Flavors & Fragrances Inc. | Odorization of combustible hydrocarbon gases |
RU2083641C1 (en) * | 1992-06-16 | 1997-07-10 | Ага Актиеболаг | Method and apparatus for adding odorant to consumer gas |
US5213586A (en) * | 1992-08-28 | 1993-05-25 | Welker Engineering Company | Vent check valve |
US5746238A (en) * | 1995-03-31 | 1998-05-05 | Ecolab, Inc. | Liquid chemical dilution and dosing system |
UA48696C2 (en) * | 2001-11-12 | 2004-07-15 | Public Corp Turbogaz | Automatic gas odorizer |
WO2005073615A1 (en) * | 2004-01-20 | 2005-08-11 | Fisher Controls International Llc | Natural gas odorant injection system |
ITPD20060270A1 (en) * | 2006-07-04 | 2008-01-05 | Francesco Jamoletti | METHOD AND SYSTEM FOR ODORING A GAS |
US8091575B2 (en) * | 2007-05-10 | 2012-01-10 | Gammon Technical Products, Inc. | Valve system |
US7779864B2 (en) * | 2007-08-27 | 2010-08-24 | Mazzei Angelo L | Infusion/mass transfer of treatment substances into substantial liquid flows |
US8349038B2 (en) * | 2008-03-26 | 2013-01-08 | Sentry Equipment Corp. | Self optimizing odorant injection system |
-
2013
- 2013-06-10 FR FR1355338A patent/FR3006610B1/en active Active
-
2014
- 2014-06-10 ES ES14739873.9T patent/ES2638860T3/en active Active
- 2014-06-10 CA CA2915087A patent/CA2915087C/en active Active
- 2014-06-10 EP EP14739873.9A patent/EP3007810B1/en active Active
- 2014-06-10 WO PCT/FR2014/051398 patent/WO2014199069A1/en active Application Filing
- 2014-06-10 US US14/897,284 patent/US10179882B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3006610A1 (en) | 2014-12-12 |
WO2014199069A1 (en) | 2014-12-18 |
CA2915087A1 (en) | 2014-12-18 |
US20160115407A1 (en) | 2016-04-28 |
FR3006610B1 (en) | 2015-07-03 |
ES2638860T3 (en) | 2017-10-24 |
CA2915087C (en) | 2021-04-13 |
US10179882B2 (en) | 2019-01-15 |
EP3007810B1 (en) | 2017-05-31 |
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