EP4303481A1 - Dispositif et procédé de préparation d'un mélange odorant de gaz naturel et d'hydrogène - Google Patents

Dispositif et procédé de préparation d'un mélange odorant de gaz naturel et d'hydrogène Download PDF

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Publication number
EP4303481A1
EP4303481A1 EP23176725.2A EP23176725A EP4303481A1 EP 4303481 A1 EP4303481 A1 EP 4303481A1 EP 23176725 A EP23176725 A EP 23176725A EP 4303481 A1 EP4303481 A1 EP 4303481A1
Authority
EP
European Patent Office
Prior art keywords
hydrogen
gas
odorant
gas line
line
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
Application number
EP23176725.2A
Other languages
German (de)
English (en)
Inventor
Sascha Niebialek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westnetz GmbH
Original Assignee
Westnetz GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westnetz GmbH filed Critical Westnetz GmbH
Publication of EP4303481A1 publication Critical patent/EP4303481A1/fr
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/25—Mixing by jets impinging against collision plates
    • 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
    • B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31324—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices arranged concentrically
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
    • 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
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
    • 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
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/918—Counter current flow, i.e. flows moving in opposite direction and colliding

Definitions

  • a device for odorizing a gas stream in a gas line comprising an injection device designed as a two-substance nozzle for injecting a liquid odorant into the gas stream flowing through the gas line and a method for odorizing a gas stream in a gas line are known.
  • the device comprises means for providing the nozzle gas stream for the operation of the two-substance nozzle through a nozzle supply line branching off from the gas line, through which part of the The gas stream flowing through the gas line is guided as a nozzle gas stream to the two-fluid nozzle.
  • a gas preheater is provided in the nozzle supply line.
  • the device for odorizing a gas stream disclosed in this document is designed exclusively for odorizing natural gas.
  • the present disclosure is based on the object of providing a device and a method for providing an odorized natural gas and hydrogen mixture.
  • a device for providing an odorized natural gas and hydrogen mixture which comprises a gas line and a two-substance nozzle which is set up to inject odorized hydrogen and/or hydrogen and odorant into the gas line.
  • the gas line can be any type of line that is designed to allow natural gas to flow through it.
  • it can be a gas pipeline in a local gas distribution network, which provides natural gas at a reduced pressure from a high-pressure transport network.
  • the device for providing an odorized natural gas and hydrogen mixture can in particular be arranged in a gas pressure control and measuring system (GDRM) of a local gas distribution network.
  • GDRM gas pressure control and measuring system
  • the two-substance nozzle can be an atomizer nozzle, which enables atomization of a liquid odorant so that the odorant does not precipitate on the inner wall of the gas line.
  • the two-substance nozzle is an injection device that is integrated, for example, in a dip tube.
  • the two-substance nozzle can achieve good nebulization with a small droplet size and a large surface area of the odorant, so that the odorant can be atomized and mixed with the hydrogen or the gas stream in the gas line.
  • atomization or evaporation/nebulization of the odorant and mixing of the odorant with the hydrogen can take place in the two-substance nozzle, with the odorized Hydrogen is mixed with the natural gas in the gas pipeline.
  • the atomization or evaporation/nebulization of the odorant can take place in the gas line upstream of the two-fluid nozzle, so that the odorant is also mixed with the hydrogen and the natural gas in the gas line.
  • the odorant is in particular a liquid odorant, for example tetrahydrotheophene (THT) or odorant according to DIN EN ISO 13734.
  • hydrogen supplied to the two-fluid nozzle can provide the pressure to atomize the odorant using the two-fluid nozzle.
  • This is advantageous because the proportion of hydrogen in the odorized natural gas and hydrogen mixture tends to increase with energy equivalent consumption, so that the amount of odorant added corresponds to the amount of hydrogen added, and not the amount of natural gas added. is directly related.
  • a homogeneous mixture of natural gas, hydrogen and odorant can therefore be produced in one step.
  • the two-fluid nozzle disclosed here is therefore an energy-efficient device for mixing odorant, hydrogen and natural gas.
  • a tank with odorant can be connected via a line to the second entrance of the two-fluid nozzle, with a pump, for example a piston pump, an injection pump or a membrane pump, supplying the odorant to the second entrance of the two-fluid nozzle.
  • the connection between the line and the second input can be made, for example, using a flange or another connection technology. Since the nozzle gas stream for the nebulization/evaporation of the odorant through the two-fluid nozzle comes from the hydrogen source, reliable evaporation/atomization of the odorant can be provided.
  • an additional compressor or a jet gas stream branched off from the gas line can be dispensed with.
  • the odorized hydrogen and/or the hydrogen and the odorant can be injected into the gas line perpendicular to the flow direction of the natural gas.
  • the alignment can deviate from the vertical direction by up to +/- 10°.
  • the orientation deviates up to +/- 3°, up to +/- 5°, up to +/- 8°, up to +/- 11°, or up to +/- 15°.
  • the mixer can be arranged between the two-fluid nozzle and an inner wall of the gas line.
  • the mixer can, for example, at least partially surround the two-substance nozzle.
  • the odorized hydrogen and/or the hydrogen and the odorant can preferably be injected into the gas line counter to the flow direction of the natural gas.
  • the mixer can be conical and widen in the flow direction of the gas line.
  • the odorized hydrogen and/or the hydrogen and the odorant can preferably be injected into the gas line counter to the flow direction of the natural gas.
  • the two-fluid nozzle can have an inner mixing area in which the odorant meets the hydrogen.
  • the odorant is atomized and the odorant is mixed with the hydrogen in the Two-fluid nozzle.
  • the odorized hydrogen is then injected into the gas pipeline where it mixes with the natural gas.
  • the odorant can hit the hydrogen in an area outside the two-fluid nozzle, i.e. immediately before the exit of the two-fluid nozzle.
  • the odorant is atomized and the odorant is mixed with the hydrogen and natural gas outside the two-fluid nozzle.
  • the Fig. 1 shows a schematic representation of a first exemplary embodiment of a device for providing an odorized natural gas and hydrogen mixture in a gas line using a two-fluid nozzle.
  • a natural gas source 50 Natural gas flows through a gas line 10.
  • a safety shut-off valve (SAV) 54 and a gas pressure regulator (GDR) 56 for reducing the gas pressure in the gas line 10.
  • a hydrogen source 30 is provided, which has a Line 32 supplies hydrogen to an entrance 22 of a two-fluid nozzle 20.
  • the hydrogen line 32 also includes a SAV 34 and a GDR 36 for reducing the hydrogen pressure in the line 32.
  • an odorant tank 40 (for example an odorant container) is provided, which supplies odorant to an inlet 21 of the two-substance nozzle 20 via a line 42.
  • the SAVs 34 and 54 are designed to limit the pressure in the lines 32 and 10, in particular a breakdown of the form from the natural gas source 50 or the hydrogen source 30 to prevent. Accordingly, GDRs 36 and 56 regulate or reduce the hydrogen and natural gas pressure, respectively.
  • a metering pump 44 is provided in line 42 to convey the odorant from the odorant tank 40 to the inlet 21 of the two-substance nozzle 20.
  • the odorant is a liquid odorant, for example THT.
  • the two-substance nozzle 20 further comprises an outlet 23, which is designed to inject odorized hydrogen and/or hydrogen and odorants into the gas line 10.
  • the two-fluid nozzle 20 is in an immersion tube (in Fig. 1 not shown), which extends into the gas line 10.
  • an evaporation body can be provided in the gas line 10 in front of the outlet 23 of the two-fluid nozzle 20 (in Fig. 1 not shown), onto which the two-substance nozzle 20 applies the odorant for better evaporation/nebulization.
  • a local gas distribution network and / or a GDRM can be used in the device for providing an odorized natural gas and hydrogen mixture according to Fig. 1 be provided, but are not shown here because they are known to those skilled in the art and are not essential to the implementation of the present invention.
  • the SAVs 34 and 54 and the GDRs 36 and 56 are optional elements of the device described in this exemplary embodiment for providing an odorized natural gas and hydrogen mixture.
  • an odorized natural gas and hydrogen mixture can be provided in the gas line 10 in a simple manner.
  • reliable atomization (evaporation/nebulization) of the odorant and mixing of the odorant with the natural gas or hydrogen can be made possible.
  • the nozzle gas stream for the two-substance nozzle 20 is provided through the hydrogen line 32, an additional nozzle gas stream can be dispensed with.
  • the provision of the nozzle gas stream for the two-substance nozzle 20 through the hydrogen line 32 enables a simple and reliable increase in the proportion of hydrogen in the odorized natural gas and hydrogen mixture while maintaining sufficient odorization.
  • a reliable and cost-effective provision of an odorized natural gas and hydrogen mixture is thus proposed, with the provision of the two-substance nozzle for supplying the hydrogen and the odorant preventing liquid odorant from condensing in the gas line 10.
  • the two-substance nozzle 20 also enables good atomization (evaporation/nebulization) with small droplet sizes and large Surface of the odorant can be reached so that the odorant can be finely atomized and reliably mixed with the hydrogen or natural gas in the gas line 10.
  • the Fig. 2 shows a schematic representation of a first exemplary embodiment of providing an odorized natural gas and hydrogen mixture in a gas line.
  • the gas line can be the one in the exemplary embodiment Fig. 1 gas line 10 shown.
  • the Fig. 2 also shows a two-fluid nozzle 20, which is the one in the exemplary embodiment Fig. 1 shown two-fluid nozzle 20 can act.
  • natural gas 11 flows around the two-substance nozzle 20, that is, the two-substance nozzle 20 is arranged in the gas line 10 or extends into the gas line 10.
  • the two-substance nozzle 20 comprises an inner feed 90 through which an odorant 41 flows, and a external feed 91 through which hydrogen 31 flows.
  • the outer feed 91 surrounds the inner feed 90.
  • the two-fluid nozzle 20 is designed such that the inner feed 90 leads the odorant 41 to an area 94 outside the two-fluid nozzle 20, where the odorant 41 is atomized and combines with the hydrogen 31 and the natural gas 11 mixed. Accordingly, a homogeneous, odorized natural gas and hydrogen mixture 95 results in the gas line 10.
  • the odorant 41 and the hydrogen 31 are injected into the gas line 10 in the flow direction of the natural gas 11, whereby the homogeneous, odorized natural gas and hydrogen mixture 95 is initially formed in a central area of the gas line 10 and then downstream of the two-fluid nozzle 20 in the gas pipe 10 spreads.
  • this injection arrangement reliable odorization of the natural gas and hydrogen mixture can be achieved.
  • the orientation of the two-substance nozzle 20 or the outlet 23 of the two-substance nozzle 20 is shown parallel to the gas line 10, ie in the flow direction of the gas line 10.
  • the orientation of the two-substance nozzle 20 or the outlet 23 of the two-substance nozzle 20 deviates by up to +/- 10 ° from the extension direction of the gas line 10 or the flow direction of the gas line 10.
  • the Fig. 3 shows a schematic representation of a second exemplary embodiment of providing an odorized natural gas and hydrogen mixture in a gas line.
  • the gas line can be the one in the exemplary embodiment Fig. 1 gas line 10 shown.
  • the Fig. 3 also shows a two-fluid nozzle 20, which is the one in the exemplary embodiment Fig. 1 shown two-fluid nozzle 20 can act.
  • the exemplary embodiment of the Fig. 3 differs from the exemplary embodiment Fig. 2 in which the odorant 41 is atomized (nebulized) in an area 93 within the two-substance nozzle 20, so that the hydrogen 31 is odorized within the two-substance nozzle 20.
  • the two-fluid nozzle 20 includes a partial element 25 in the outlet 23.
  • the sub-element 25 is conical and arranged centrally within the two-substance nozzle 20 in the outlet 23 of the two-substance nozzle 20, the cone shape widening in the direction of the outlet 23 of the two-substance nozzle 20.
  • the partial element 25 allows the odorized hydrogen to be distributed over the entire width of the gas line, since it deflects the odorized hydrogen to the side walls of the gas line 10. There the odorized hydrogen meets the natural gas 11 and a homogeneous, odorized natural gas and hydrogen mixture 95 is formed.
  • the partial element 25 can also have a shape other than a cone shape, as long as it is designed to deflect the odorized hydrogen from the outlet 23 of the two-fluid nozzle 20 to the side walls of the gas line 10.
  • the odorized hydrogen is indexed in the flow direction of the natural gas 11 into the gas line 10. This results in a reliable mixing of the odorized hydrogen 31 with the natural gas 11, so that a homogeneous, odorized natural gas and hydrogen mixture 95 can be provided in the entire gas line 10.
  • the orientation of the two-substance nozzle 20 is parallel to the gas line 10, ie in the flow direction of the gas line 10. However, it can also be provided that the orientation of the two-substance nozzle 20 is up to +/- 10 ° from the direction of extension of the gas line 10 or the Flow direction of the gas line 10 differs.
  • the alignment of the two-substance nozzle 20 in the gas line 10 can also be adapted to the deflection angle of the sub-element 25.
  • the in the Fig. 3 The two-fluid nozzle 20 shown can also be designed without a sub-element 25.
  • the Fig. 4 shows a schematic representation of a third exemplary embodiment of providing an odorized natural gas and hydrogen mixture in a gas line.
  • the gas line can be the one in the exemplary embodiment Fig. 1 gas line 10 shown.
  • the Fig. 4 also shows a two-fluid nozzle 20, which is the one in the exemplary embodiment Fig. 1 shown two-fluid nozzle 20 can act.
  • the exemplary embodiment of the Fig. 4 differs from the exemplary embodiment Fig. 2 , in which the two-substance nozzle 20 injects the odorant 41 and the hydrogen 31 into the gas line 10 against the flow direction of the natural gas 11.
  • the odorant 41 is atomized (nebulized) in the area 94 in front of the outlet 23 of the two-fluid nozzle 20 and mixes there with the hydrogen 31 (as in the exemplary embodiment of Fig. 2 ).
  • the odorized hydrogen hits the natural gas 11 in the countercurrent direction, so that a homogeneous, odorized natural gas and hydrogen mixture 95 is formed centrally in the gas line 10.
  • the odorized hydrogen 31 hits the natural gas 11 in the countercurrent direction and is passed around the two-fluid nozzle 20 together with the already formed homogeneous, odorized natural gas and hydrogen mixture 95 in the flow direction of the natural gas 11.
  • the impact of the odorized hydrogen 31 on the natural gas 11 in the countercurrent direction enables a reliable formation of a homogeneous, odorized natural gas and hydrogen mixture 95.
  • the Fig. 4 will be on the Fig. 2 referred.
  • a mixer 80 can be provided in the gas line 10 for further improved mixing of the odorized hydrogen 31 and the natural gas 11.
  • the mixer 80 can be, for example, a baffle plate, a baffle plate, or a sheet metal apron, onto which the homogeneous, odorized natural gas and hydrogen mixture 95 hits and is further mixed.
  • the mixer 80 is arranged between the two-substance nozzle 20 and the inner wall of the gas line 10 and surrounds (at least partially) the two-substance nozzle 20.
  • the mixer 80 is conical and widens outwards in the flow direction of the natural gas 11 in the gas line 10.
  • the orientation of the two-substance nozzle 20 or the outlet 23 of the two-substance nozzle 20 is shown parallel to the gas line 10, ie, against the flow direction of the gas line 10.
  • the orientation of the two-substance nozzle 20 or the outlet 23 of the two-substance nozzle 20 deviates by up to +/- 10 ° from the extension direction of the gas line 10 or the flow direction of the gas line 10.
  • the in the Fig. 4 can also be designed without a mixer 80.
  • the Fig. 5 shows a schematic representation of a fourth exemplary embodiment of providing an odorized natural gas and hydrogen mixture in a gas line.
  • the gas line can be the one in the exemplary embodiment Fig. 1 shown Gas pipe 10 act.
  • the Fig. 5 also shows a two-fluid nozzle 20, which is the one in the exemplary embodiment Fig. 1 shown two-fluid nozzle 20 can act.
  • the exemplary embodiment of the Fig. 5 differs from the exemplary embodiment Fig. 3 , in which the two-substance nozzle 20 injects the odorized hydrogen 31 into the gas line 10 against the flow direction of the natural gas 11, and in which a mixer 80 is provided in the gas line 10.
  • a mixer 80 is provided in the gas line 10.
  • the odorized hydrogen 31 is deflected to the side walls of the gas line 10 and hits the natural gas 11 there in the countercurrent direction, thereby enabling a reliable formation of an odorized natural gas and hydrogen mixture 95.
  • the odorized natural gas and hydrogen mixture 95 is then, as indicated by the arrows 96, passed around the two-fluid nozzle 20 in the flow direction of the natural gas 11, where it hits the mixer 80 and is further mixed by it.
  • the mixer 80 can be like that in the exemplary embodiment Fig. 4
  • the mixer 80 described can be formed and also arranged accordingly in the gas line 10, so that the mixer 80 will not be described again at this point.
  • the Fig. 6 shows a schematic representation of a second exemplary embodiment of a device for providing an odorized natural gas and hydrogen mixture in a gas line using a two-fluid nozzle.
  • the exemplary embodiment of the Fig. 6 differs from the exemplary embodiment Fig. 1 in which means for supplying thermal energy from the hydrogen line 32 into the gas line 10 are provided. Regarding the description of the other elements of the Fig. 6 will be on the Fig. 1 referred.
  • the means for supplying thermal energy from the hydrogen line 32 into the gas line 10 include a first heat exchanger 71, a second heat exchanger 72 and a conveying means 74.
  • the first heat exchanger 71 is designed to absorb thermal energy from the hydrogen 31 flowing in the hydrogen line 32 medium to transmit.
  • the second heat exchanger 72 is set up to transfer thermal energy of the medium to the natural gas 11 flowing in the gas line 10.
  • the conveying means 74 (for example a pump) is set up to move the medium from the first heat exchanger 71 to the second heat exchanger 72.
  • the means for supplying thermal energy from the hydrogen line 32 into the gas line 10 is a closed circuit.
  • the natural gas can cool down according to the Joule-Thomsen effect, which can lead to the valves 54 and 56 installed in the gas line 10 icing up.
  • the thermal energy generated in the hydrogen line 32 can be at least partially supplied to the gas line 10 or the natural gas, so that icing of the valves 54 and 56 or the two-fluid nozzle 20 can be prevented. This means that there is no need for additional heat generators to prevent the valves 54 and 56 or the two-fluid nozzle 20 in the gas line 10 from icing up.
  • the two-fluid nozzle 20 shown can be any of the ones in the Figs. 2 to 5 shown two-fluid nozzles 20 act. Furthermore, a mixer 80, as in the Figs. 4 and 5 shown in the arrangement of Fig. 6 be provided.
  • a method for providing an odorized natural gas and hydrogen mixture can be implemented with one of the above devices and includes the following method steps: passing natural gas 11 through the gas line 10, passing hydrogen 31 to the two-fluid nozzle 20 and passing odorant 41 with the aid the metering pump 44 to the two-fluid nozzle 20.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP23176725.2A 2022-06-29 2023-06-01 Dispositif et procédé de préparation d'un mélange odorant de gaz naturel et d'hydrogène Pending EP4303481A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022116154.4A DE102022116154A1 (de) 2022-06-29 2022-06-29 Vorrichtung und Verfahren zum Bereitstellen eines odorierten Erdgas- und Wasserstoff-Gemisches

Publications (1)

Publication Number Publication Date
EP4303481A1 true EP4303481A1 (fr) 2024-01-10

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Application Number Title Priority Date Filing Date
EP23176725.2A Pending EP4303481A1 (fr) 2022-06-29 2023-06-01 Dispositif et procédé de préparation d'un mélange odorant de gaz naturel et d'hydrogène

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EP (1) EP4303481A1 (fr)
DE (1) DE102022116154A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011891A1 (de) * 1990-04-12 1991-10-17 Lechler Gmbh & Co Kg Zweistoffzerstaeubungsduese
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