Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
  • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
  • F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
  • F25J1/0052—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream
  • F25J1/0055—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream originating from an incorporated cascade
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
  • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
  • F25J1/0022—Hydrocarbons, e.g. natural gas
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
  • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
  • F25J1/007—Primary atmospheric gases, mixtures thereof
  • F25J1/0072—Nitrogen
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
  • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
  • F25J1/008—Hydrocarbons
  • F25J1/0092—Mixtures of hydrocarbons comprising possibly also minor amounts of nitrogen
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
  • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
  • F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
  • F25J1/0212—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a single flow MCR cycle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
  • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
  • F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
  • F25J1/0217—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as at least a three level refrigeration cascade with at least one MCR cycle
  • F25J1/0218—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as at least a three level refrigeration cascade with at least one MCR cycle with one or more SCR cycles, e.g. with a C3 pre-cooling cycle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J2210/00—Processes characterised by the type or other details of the feed stream
  • F25J2210/60—Natural gas or synthetic natural gas [SNG]
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J2270/00—Refrigeration techniques used
  • F25J2270/12—External refrigeration with liquid vaporising loop
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J2270/00—Refrigeration techniques used
  • F25J2270/66—Closed external refrigeration cycle with multi component refrigerant [MCR], e.g. mixture of hydrocarbons
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
  • F25J2270/00—Refrigeration techniques used
  • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
  • F25J2270/902—Details about the refrigeration cycle used, e.g. composition of refrigerant, arrangement of compressors or cascade, make up sources, use of reflux exchangers etc.

Definitions

• the present invention relates to a process for liquefying a hydrocarbon stream such as natural gas in particular in a process for the production of liquefied natural gas.
• a hydrocarbon stream such as natural gas
• refrigerant streams are used to produce cold at different levels of a main heat exchanger by vaporizing against the hydrocarbon stream to be liquefied (typically gas). natural).
• natural gas can be stored and transported over long distances more easily in liquid form than in gaseous form, because it occupies a smaller volume for a given mass and does not need to be stored at high pressure.
• LNG liquefied natural gas
• the mixed refrigerant is compressed by means of a compressor and separated into a gaseous stream and at least one liquid stream, and then the two streams are combined to form a two-phase stream.
• This two-phase current is introduced into the main heat exchanger where it is totally liquefied and subcooled to the coldest temperature of the process, typically that of the liquefied natural gas stream.
• the refrigerant is expanded and reintroduced into the main heat exchanger to be vaporized against the liquefied hydrocarbon-rich fraction.
• liquid refrigerant it is not necessary for the liquid refrigerant to be as much undercooled as the gaseous refrigerant before being expanded and vaporized opposite the hydrocarbon stream to be liquefied. This is what is proposed by the typical method of the state of the art as described in the preceding paragraph.
• the inventors of the present invention have then developed a solution to solve the problem raised above while optimizing energy expenditure.
• the proposed solution is to separately present the liquid refrigerant stream and the gaseous refrigerant stream in the main heat exchanger.
• the liquid is then cooled to an intermediate temperature level while the gas is liquefied and cooled to the coldest outlet of the main heat exchanger.
• the liquefied gaseous refrigerant is then expanded and reintroduced into the main heat exchanger. It is mixed with the cooled liquid refrigerant and previously also relaxed, once it has reached the correct temperature level.
• the present invention relates to a process for liquefying a hydrocarbon stream such as natural gas from a feed stream comprising at least the following steps: Step a): passing the feed gas against a mixed refrigerant stream through a heat exchanger to provide an at least partially liquefied hydrocarbon stream having a temperature below - 140 ° C;
• an object of the present invention relates to:
• a method as defined above characterized in that it comprises a step prior to step c) of compression of the mixed refrigerant from step b) followed by cooling.
• T1 is between -30 ° C and -50 ° C.
• T2 is between -80 ° C and -1 10 ° C.
• T3 is between -140 ° C and -170 ° C.
• the method of the present invention makes it possible to optimize the use of liquid and gaseous refrigerant currents in the liquefaction cycle, since the liquid, which contains the heavier components, must not be as much subcooled as the refrigerant. gaseous.
• the intermediate liquid (above-mentioned as the first liquid refrigerant stream resulting from stage c)) is not pumped in order to be mixed. to the high pressure liquid (hereinafter referred to as the second liquid coolant stream from step e).
• the process according to the present invention is applicable to various hydrocarbon feed streams, it is particularly suitable for natural gas streams to be liquefied.
• the liquefied natural gas can be further processed, if desired.
• the liquefied natural gas obtained can be depressurized by means of a Joule-Thomson valve or by means of a turbine.
• other intermediate treatment steps between the gas / liquid separation and the cooling can be carried out.
• the hydrocarbon stream to be liquefied is usually a stream of natural gas obtained from natural gas or oil reservoirs.
• the natural gas stream can also be obtained from another source, also including a synthetic source such as a Fischer-Tropsch process.
• the flow of natural gas is essentially composed of methane.
• the feed stream comprises at least 60 mol% of methane, preferably at least 80 mol% of methane.
• natural gas may contain quantities of hydrocarbons heavier than methane, such as ethane, propane, butane and pentane, as well as some aromatic hydrocarbons.
• the natural gas stream may also contain non-hydrocarbon products such as H 2 O, N 2 , CO 2 , H 2 S and other sulfur compounds, and the like.
• the feed stream containing the natural gas can be pretreated before being introduced into the heat exchanger.
• This pretreatment may include reducing and / or eliminating undesirable components such as CO2 and H 2 S, or other steps such as pre-cooling and / or pressurizing. Since these measurements are well known to those skilled in the art, they are not further detailed here.
• natural gas refers to any composition containing hydrocarbons including at least methane.
• the separator may be any unit, column or arrangement adapted to separate the mixed refrigerant into a vapor refrigerant stream and a liquid refrigerant stream. Such separators are known in the state of the art and are not detailed here.
• the heat exchanger can be any column, unit or other arrangement adapted to allow the passage of a number of flows, and thus allow a direct or indirect heat exchange between one or more lines of refrigerant, and one or several feed streams.
• a stream 1 of natural gas possibly pretreated beforehand (having typically undergone a separation of a part of at least one of the following constituents: water, CO2, methanol, sulfur compounds) is introduced into a heat exchanger 2 to be liquefied.
• the figure therefore shows a liquefaction process of a feed stream 1.
• the feed stream 1 may be a pretreated natural gas stream, wherein one or more substances, such as sulfur, carbon dioxide, water, are reduced, so as to be compatible with cryogenic temperatures, such as this is known in the state of the art.
• the feed stream 1 may have undergone one or more pre-cooling steps as known in the state of the art.
• One or more pre-cooling stage (s) may include one or more refrigeration circuits.
• a feed stream of natural gas is generally processed from an initial temperature of 30-50 C. Following one or more pre-cooling stages, the temperature of the gas feed stream natural can be reduced to -30 to -70 C.
• the heat exchanger 2 is preferably a coiled coil cryogenic heat exchanger.
• Cryogenic heat exchangers are known in the state of the art, and may have various arrangements of their feed stream (s) and refrigerant streams.
• such heat exchangers may also have one or more lines to allow the passage of other streams, such as refrigerant streams for other stages of a cooling process, for example in processes liquefaction. These other lines or flows are not shown in the figure for simplicity.
• the feed stream 1 enters the heat exchanger 2 via a feed inlet 3 and passes through the heat exchanger via the line 4, then is extracted from the exchanger at the outlet 5 to provide a flow
• This liquefied stream 6 is preferably fully liquefied and even subcooled, and may be further processed as discussed below.
• the temperature may be from about -150 ° C to -160 ° C.
• the liquefaction of the feed stream 1 is carried out by means of a refrigerant circuit 7.
• the refrigerant circuit 7 circulates a mixed refrigerant, preferably being selected from the group consisting of nitrogen, methane, ethane ethylene, propane, propylene, butane, pentane, etc.
• the composition of the mixed refrigerant may vary depending on the conditions and the desired parameters for the heat exchanger 2, as known in the state of the art.
• a cooling gas stream 8 is introduced into the exchanger 2 at an inlet 9, then it passes through this inlet and liquefies and cools down. along the line 10 through the heat exchanger 2, to the exit 1 1.
• the temperature T3 of the outlet 1 1 is the lowest of the temperatures of the heat exchanger 2.
• T3 is typically between -140 ° C and -170 ° C, for example -160 ° C.
• the gaseous refrigerant stream 8 is liquefied such that the refrigerant flow downstream of the outlet 11 is a liquid stream 12.
• the refrigerant stream 12 is then expanded, for example using a valve 13, so as to provide a first stream of refrigerant at reduced pressure 14. This stream 14 is then introduced into the heat exchanger 2 through the inlet 15.
• a liquid stream 16 of the refrigerant is introduced into the heat exchanger 2 via the inlet 17, then passes through the exchanger 2 along the line 18.
• the liquid coolant stream 16 is discharged from the exchanger to the output 19, at an intermediate level between the top and bottom of said exchanger, having a temperature T2 greater than T3.
• T2 is between -90 ° C and - 1 10 ° C.
• the refrigerant stream 20 downstream of the outlet 19 is expanded in an expansion valve 21, for example a valve, to reduce its pressure and form a Second flow of refrigerant reduced pressure 22.
• the flow 22 then passes, through the inlet 23, again in the heat exchanger 2 and goes to the outlet 24 of the heat exchanger.
• Another liquid stream 25 of the refrigerant is introduced into the heat exchanger 2 via the inlet 26, then passes through the exchanger 2 along the line 27.
• the liquid coolant stream 25 is discharged from the heat exchanger. the outlet 28, at an intermediate level between the top and the bottom of said exchanger, having a temperature T1 greater than T2.
• T1 is between -30 ° C and -50 ° C.
• the refrigerant stream 29 downstream of the outlet 28 is expanded in a pressure reducer 30, for example a valve, to reduce its pressure and form a third stream of refrigerant at reduced pressure 31.
• the pressures of the first, second and third reduced pressure refrigerants 14, 22 and 31 are substantially the same; for example, about 3 bara.
• the refrigerant stream 14 vaporizes, at least partially, to the outlet 34, then downstream of this outlet 34 will join the flow 22 from the expansion of the liquid stream 16 cooled, the two streams are then mixed in the stream 22. In the same manner, this refrigerant stream 22 is mixed with the refrigerant stream 31 downstream of the outlet 24.
• the stream 31 then passes through the inlet 32 again into the heat exchanger 2 and vaporizes completely to the outlet 33 of the heat exchanger.
• a gaseous refrigerant stream flows in the refrigeration circuit 7 downstream of the heat exchanger outlet 33 at ambient temperature (i.e., the temperature measured in the space where the device for implementing the refrigerant is placed.
• the process of the present invention is, for example, between -20 ° C. and 45 ° C.
• the refrigerant stream is compressed using a compressor 36.
• the compression process is known in the state of the art and the compressor 36 is for example a compressor with at least two adiabatic sections A and B thus comprising at least two coolers 37 and 38.
• the coolant stream is cooled by means of a cooler 37 and is then partially condensed and forms a two-phase refrigerant stream 39.
• the pressure at the outlet of the section A of the compressor 36 is of the order of 18 bara and the temperature of the order of 130 ° C.
• the temperature at the outlet of the cooler 37 is of the order of 25 ° C.
• the coolant stream 39 is sent to a phase separator 40 separating said two-phase refrigerant stream into a gas stream 41 and a first liquid stream 25.
• Said first liquid refrigerant stream 25 consists of the heavier elements of the refrigerant stream of the refrigeration circuit 7 that is, in particular those components having more than four carbon atoms.
• the liquid coolant stream 25 then follows the path described above from the inlet 26 of the heat exchanger 2.
• the gaseous refrigerant stream 41 is compressed in the section B of the compressor. Typically, the pressure at the outlet of this section B is of the order of 50 bara. After this compression, the cooling stream is partially condensed using the cooler 38 and forms a two-phase refrigerant stream 42. Typically the temperature is at room temperature.
• the coolant stream 42 is sent to a phase separator 43 separating said coolant stream into a gas stream 8 and a second liquid stream 16.
• Said second liquid coolant stream 16 consists of elements that are lighter than those contained in the liquid 25 but heavier. than those contained in the gas stream 8. This liquid refrigerant stream 16 then follows the path described above from the inlet 17 of the heat exchanger 2.
• the gaseous refrigerant stream 8 then follows the path described above from of the inlet 9 of the heat exchanger 2.
• This gaseous refrigerant stream 8 contains the lightest elements of the refrigerant stream of the refrigeration circuit 7, that is to say, typically nitrogen and methane.
• temperature substantially equal to another temperature means temperature equal to plus or minus 5 ° C.
• the liquefied natural gas 6 at the end of the process that is the subject of the present invention can then, for example, be transferred to a storage or transport device.
• liquid refrigerant currents are not subcooled more than what is necessary (typically characterized by the correspondence between the temperature the draw off of the exchanger at points 20 and 28) and the composition of the vaporized coolant stream (having the lighter components) at the coldest outlet of the main heat exchanger is improved.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Separation By Low-Temperature Treatments (AREA)

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• 2015
  • 2015-11-10 FR FR1560731A patent/FR3043451B1/fr active Active
• 2016
  • 2016-08-03 US US15/778,297 patent/US20180356150A1/en not_active Abandoned
  • 2016-08-03 EA EA201891076A patent/EA201891076A1/ru unknown
  • 2016-08-03 CN CN201680072923.5A patent/CN108369059A/zh active Pending
  • 2016-08-03 WO PCT/FR2016/052024 patent/WO2017081374A1/fr not_active Ceased
  • 2016-09-27 RU RU2016138301A patent/RU2669072C2/ru active

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