EP3143105A1 - Procédé d'injection de biomethane dans un réseau de gaz naturel - Google Patents
Procédé d'injection de biomethane dans un réseau de gaz naturelInfo
- Publication number
- EP3143105A1 EP3143105A1 EP15725844.3A EP15725844A EP3143105A1 EP 3143105 A1 EP3143105 A1 EP 3143105A1 EP 15725844 A EP15725844 A EP 15725844A EP 3143105 A1 EP3143105 A1 EP 3143105A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- biomethane
- value
- nitrogen
- membrane
- 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.)
- Ceased
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
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/08—Production of synthetic natural gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
-
- 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
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
-
- 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
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/12—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- 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
- C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
- C10L2290/143—Injection, e.g. in a reactor or a fuel stream during fuel production of fuel
-
- 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
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/542—Adsorption of impurities during preparation or upgrading of a fuel
-
- 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
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/547—Filtration for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- 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
-
- 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 a biomethane injection process in a type B natural gas network and its corresponding installation.
- Biogas contains mainly methane (CH 4) carbon dioxide (C0 2), but also water, nitrogen, hydrogen sulfide, oxygen, and other organic compounds.
- Biogas can, after a light treatment, be upgraded near the production site to provide heat, electricity or a mixture of both (cogeneration); the high content of carbon dioxide reduces its calorific value, increases the compression and transport costs and limits the economic interest of its valuation to this use of proximity.
- Biomethane thus completes the natural gas resources with a renewable part produced in the heart of the territories. It is usable for exactly the same uses.
- the injection of biomethane produced is in full swing.
- two types of natural gas networks exist: the type H network (high calorific value) and the type B network (low calorific value).
- the biogas purification plants produce a biomethane containing 2.5 mol% of C0 2 in CH4 mainly, with thus a higher heating value and a Wobbe index too high to be injected into the type B networks.
- a solution of the present invention is a method of injecting biomethane into a network having a higher heating value of X value between XI and X2, comprising the injection of nitrogen into the biomethane network before the injection of biomethane into the network having a higher heating value of X value so as to lower the heating value of the biomethane network to a value between XI and X2, with the nitrogen from the retentate of at least one membrane stage.
- a particular solution of the invention is a method for injecting biomethane into a type B natural gas network, comprising the injection of nitrogen into the biomethane network before the injection of biomethane into the natural gas network. in order to lower the higher heating value of the biomethane network to a value of between 9.5 and 10.5 kWh / Nm 3 , with the nitrogen resulting from the retentate of at least one membrane.
- the method according to the invention may have one or more of the following characteristics:
- the membrane stage is supplied with air coming from a network internal to the process or from an air compressor; and controlling the amount of nitrogen injected into the biomethane network via a control valve located on the feed of the membrane stage or by adjusting the production capacity of the air compressor.
- a control valve located on the feed of the membrane stage or by adjusting the production capacity of the air compressor.
- the set point of the nitrogen flow rate to be injected is calculated knowing the methane content in the natural gas, as well as its flow rate, these two parameters making it possible to deduce the PCS from the gas when the CH4 is the only fuel present.
- internal network is preferably meant air used for the operation of instruments used in the process such as valves; we can also speak of "air instrument”;
- the gaseous flow passing through the membrane stage is dry air so that the nitrogen, retentate of the membrane stage, mixed with the biomethane meets the specifications of the network having a heating value greater than X value; and deoiled at a pressure greater than or equal to the pressure of the biomethane network, generally between 5 and 15 bar.
- the air is dewatered so as to have a dew point in water of less than -5 ° C at the maximum pressure of the injection network; the purity of the nitrogen injected into the biomethane network is checked by means of an analysis of the oxygen concentration in the nitrogen retentate, or by a measurement of the pressure of the retentate.
- control loop whose actuator is a control valve installed on the retentate of the membrane, with the control valve making it possible to adjust the operating pressure of the membrane.
- An oxygen analyzer located on the nitrogen retentate controls the purity and is the measure of the control loop. The purity of oxygen can also be deduced by measuring the pressure of the retentate. The measurement of the regulation loop is then constituted by a pressure sensor.
- the membrane from which the nitrogen-enriched retentate is derived also produces a stream enriched with oxygen.
- the stream enriched with oxygen is injected into a digester producing biogas or upstream of activated carbon filters of a biogas purification unit.
- digester is meant an anaerobic production of biogas. This oxygen enriched flow injection facilitates the desulphurization of the biogas inside the digesters, or when the enriched oxygen flow is injected into a biogas purification unit it facilitates the abatement of the H2S by activated carbons. .
- the present invention also relates to a biomethane injection system in a network having a higher heating value of value X, comprising:
- a particular installation according to the invention is a biomethane injection plant in a type B natural gas network, comprising:
- the installation according to the invention may have one or more of the following characteristics:
- said installation comprises an oxygen concentration analyzer located on the retentate of the membrane upstream of the first injection point; a pressure sensor located on the retentate of the membrane upstream of the first injection means, and a control valve located on the retentate of the membrane downstream of the analyzer and upstream of the first injection means.
- said installation comprises a regulating valve on the feed rate of the membrane.
- the compressed air production system successively comprises in the air flow direction an air inlet, an air compressor, a compressed gas cooling system, a condensate separator, an activated carbon filter. to remove the residual oil particles, a particulate filter to remove the activated carbon particles, a dryer and a compressed air storage tank.
- Figure 1 shows an installation according to the invention when the air used to produce the nitrogen is taken on an instrument air network.
- FIG. 2 represents an installation according to the invention when the air used to produce the nitrogen is produced by a dedicated compressor.
- the air flow 1 feeds a membrane stage consisting of one or more membranes in parallel 2 and allowing the production of nitrogen under pressure.
- a retentate 3 enriched in nitrogen is recovered from the membrane.
- the retentate passes into an analyzer 4 measuring the oxygen concentration and the purity of the nitrogen injected into the biomethane network 6 is controlled via a control valve 5.
- the nitrogen flow rate product is controlled by adjusting the air flow entering the membrane stage, either through a control valve 16 (FIG. 1) or by adjusting the production capacity of the air compressor 17 (FIG. 2); a flow meter and a CH 4 analyzer on the biomethane make it possible to check that the PCS complies with the injection specification.
- Figure 3 details what can be the air production system: the air can be compressed at a pressure greater than 5 bar in an air compressor 7, and then cooled 8. The air flow thus compressed and cooled is introduced into a condensate separator 9, before passing successively into an adsorber 10 comprising activated carbon so as to remove the residual oil particles and in a particle filter 11 so as to remove the active carbon particles. A stream of purified compressed air is then recovered which can be stored before feeding the membrane 2.
- Tables 1 and 2 below illustrate the need for nitrogen injection to comply with biomethane injection specification from the point of view of PCS and Wobbe index in gas networks B:
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1454321A FR3020966B1 (fr) | 2014-05-15 | 2014-05-15 | Procede d'injection de biomethane dans un reseau de gaz naturel |
PCT/FR2015/051230 WO2015173503A1 (fr) | 2014-05-15 | 2015-05-11 | Procédé d'injection de biomethane dans un réseau de gaz naturel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3143105A1 true EP3143105A1 (fr) | 2017-03-22 |
Family
ID=51417418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15725844.3A Ceased EP3143105A1 (fr) | 2014-05-15 | 2015-05-11 | Procédé d'injection de biomethane dans un réseau de gaz naturel |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170088785A1 (fr) |
EP (1) | EP3143105A1 (fr) |
CN (1) | CN106536688A (fr) |
FR (1) | FR3020966B1 (fr) |
WO (1) | WO2015173503A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10214702B2 (en) * | 2016-12-02 | 2019-02-26 | Mustang Sampling Llc | Biogas blending and verification systems and methods |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6478852B1 (en) * | 2000-02-18 | 2002-11-12 | Cms Technology Holdings, Inc. | Method of producing nitrogen enriched air |
Family Cites Families (22)
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US3898047A (en) * | 1973-07-17 | 1975-08-05 | Bendix Corp | Oxygen generation system |
FR2507917A1 (fr) * | 1981-06-23 | 1982-12-24 | Methaneco | Doseur-melangeur de gaz, notamment pour installation de biogaz |
DE4435702C2 (de) * | 1994-10-06 | 1998-11-26 | Druckluft Dannoehl Gmbh | Verfahren und Vorrichtung zum Erzeugen von Stickstoff |
US5727903A (en) * | 1996-03-28 | 1998-03-17 | Genesis Energy Systems, Inc. | Process and apparatus for purification and compression of raw landfill gas for vehicle fuel |
DE102007061137B4 (de) * | 2007-12-19 | 2011-12-15 | Agraferm Technologies Ag | Vorrichtung und Verfahren zur Umwandlung von bei der Ethanolproduktion als Abfallprodukt anfallender Fermentationsbrühe in Biogas |
CA2641270C (fr) * | 2008-06-25 | 2013-08-27 | Gemini Corporation | Appareillage et procede de production de biogaz |
US8007567B2 (en) * | 2008-08-13 | 2011-08-30 | A & B Process Systems Corporation | Apparatus and method for biogas purification |
DE102008058736B3 (de) * | 2008-11-24 | 2010-08-05 | Technische Universität Clausthal | Verfahren zum Betreiben eines Gasnetzes |
DE102010017818A1 (de) * | 2010-02-17 | 2011-08-18 | Meissner, Jan A. | Verfahren und Anlage zur Herstellung von CBM (Compressed BioMethane) als treibhausgasfreier Kraftstoff |
AT509318B8 (de) * | 2010-05-03 | 2011-09-15 | Rudolf Grossfurtner Gmbh | Abtrennverfahren |
WO2012036651A1 (fr) * | 2010-09-13 | 2012-03-22 | Membrane Technology And Research, Inc. | Procédé de séparation de gaz à l'aide de membranes comprenant le balayage du perméat pour enlever du co2 à partir d'un échappement de combustion de combustibles gazeux |
DE102011103430A1 (de) * | 2011-06-07 | 2012-12-13 | Solar Fuel Gmbh | Verfahren zur Bereitstellung eines Gases mit sehr hohem Methangehalt und dazu ausgelegte Anlage |
NL2008266C2 (nl) * | 2012-02-09 | 2013-08-14 | Aqana B V | Anaeroob waterzuiveringssysteem en werkwijze voor het behandelen van een vloeistof. |
US20130233388A1 (en) * | 2012-03-06 | 2013-09-12 | General Electric Company | Modular compressed natural gas system |
CN202860346U (zh) * | 2012-09-14 | 2013-04-10 | 临安市诺顿机电有限公司 | Pet吹瓶机气源净化装置 |
CN202844840U (zh) * | 2012-09-19 | 2013-04-03 | 北京锐业制药有限公司 | 一种压缩空气*** |
DE102012110596A1 (de) * | 2012-11-06 | 2014-05-08 | Holger Klos | Verfahren und Vorrichtung zum Bereitstellen eines Gasgemischs |
CL2013001529A1 (es) * | 2013-05-30 | 2013-11-04 | Univ Santiago Chile | Procedimiento de digestion anaerobia de aguas residuales, que comprende inocular con lodo bien digerido a las aguas residuales con una concentracion elevada de nitrogeno, agregar zeolita-clinoptilolita, agregar volumenes crecientes de dichas aguas residuales, monitorear el funcionamiento del digestor, agregar nuevamente zeolita, y extraer el lodo en exceso producido desde la parte inferior del digestor. |
US20160146516A1 (en) * | 2014-11-23 | 2016-05-26 | Mingsheng Liu | Absorption Cooling Air Compressor System |
US9745927B2 (en) * | 2015-03-10 | 2017-08-29 | Denso International America, Inc. | Emissions reduction system for an internal combustion engine |
US9903323B2 (en) * | 2015-03-10 | 2018-02-27 | Denso International America, Inc. | Emissions reduction system for an internal combustion engine |
JP6333786B2 (ja) * | 2015-09-17 | 2018-05-30 | ファナック株式会社 | レーザ光路の清浄化機能を有するレーザ加工システム |
-
2014
- 2014-05-15 FR FR1454321A patent/FR3020966B1/fr active Active
-
2015
- 2015-05-11 WO PCT/FR2015/051230 patent/WO2015173503A1/fr active Application Filing
- 2015-05-11 US US15/311,376 patent/US20170088785A1/en not_active Abandoned
- 2015-05-11 CN CN201580034927.XA patent/CN106536688A/zh active Pending
- 2015-05-11 EP EP15725844.3A patent/EP3143105A1/fr not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6478852B1 (en) * | 2000-02-18 | 2002-11-12 | Cms Technology Holdings, Inc. | Method of producing nitrogen enriched air |
Also Published As
Publication number | Publication date |
---|---|
FR3020966A1 (fr) | 2015-11-20 |
US20170088785A1 (en) | 2017-03-30 |
FR3020966B1 (fr) | 2017-10-27 |
CN106536688A (zh) | 2017-03-22 |
WO2015173503A1 (fr) | 2015-11-19 |
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