EP4163545A1 - Brûleur pour effectuer une oxydation partielle - Google Patents

Brûleur pour effectuer une oxydation partielle Download PDF

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Publication number
EP4163545A1
EP4163545A1 EP21020497.0A EP21020497A EP4163545A1 EP 4163545 A1 EP4163545 A1 EP 4163545A1 EP 21020497 A EP21020497 A EP 21020497A EP 4163545 A1 EP4163545 A1 EP 4163545A1
Authority
EP
European Patent Office
Prior art keywords
channel
burner
central channel
annular
fluid
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.)
Withdrawn
Application number
EP21020497.0A
Other languages
German (de)
English (en)
Inventor
Markus Weikl
Sebastian Ulmer
Martin Murer
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.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Priority to EP21020497.0A priority Critical patent/EP4163545A1/fr
Priority to PCT/EP2022/025464 priority patent/WO2023057089A2/fr
Publication of EP4163545A1 publication Critical patent/EP4163545A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration

Definitions

  • the invention relates to a burner for carrying out a partial oxidation and a method for operating such a burner with a central channel and at least one annular channel surrounding the central channel through which a fluid can flow in order to carry out the partial oxidation.
  • a hydrocarbon-containing fuel e.g. natural gas, petroleum gas or heating gas
  • an oxidizing agent for example in the form of an oxygen-containing gas, e.g. oxygen or air or a mixture thereof, in a substoichiometric mixing ratio in order to produce a synthesis gas.
  • a mixture of carbon monoxide and hydrogen is produced as the synthesis gas, which can be used, for example, in fuel cells.
  • a moderator for example water vapor or carbon dioxide
  • a moderator for example water vapor or carbon dioxide
  • Burners for partial oxidation can be designed as multi-channel burners with a number of concentric channels through which a fluid can flow in each case.
  • a burner usually has a central channel and one or more annular channels surrounding this central channel.
  • a cooling channel for a cooling fluid, e.g., water, for cooling the burner can be provided in a wall of the burner.
  • a burner tip At a front end of the burner viewed in the direction of flow of the fluids, a burner tip can be provided, which can be designed, for example, in the shape of a truncated cone.
  • the outer annular channels can run, for example, at a predetermined angle of inclination or outlet towards the central channel. In this way, through the annular Channels guided fluids are emitted or discharged from the burner tip at a predetermined inclination or outlet angle relative to a fluid flow of the central core.
  • the U.S. 3,255,966 A discloses, for example, a partial oxidation burner having an inner passage and an annular outer passage concentric therewith. Cooling channels for a cooling fluid for cooling the burner are provided in an outer wall of the burner.
  • the burner according to the invention is set up to be operated according to a preferred embodiment of the method according to the invention. Advantages and advantageous configurations of the burner according to the invention and the method according to the invention result from the following description in a corresponding manner.
  • the burner is intended for carrying out a partial oxidation of fluids, in particular a hydrocarbon-containing fuel, eg natural gas, petroleum gas or heating gas, and an oxidizing agent, in particular in the form of an oxygen-containing gas, eg oxygen or air or a mixture thereof.
  • the burner has a central channel and at least one annular channel surrounding the central channel, through which a fluid can flow in each case in order to carry out the partial oxidation.
  • the individual channels can each be connected to a corresponding fluid supply.
  • a rod element is arranged in the central channel and extends at least along part of an axial length of the central channel.
  • the rod element is arranged in such a way that between the rod element and a wall of the central channel or between a radially outer (top) surface of the rod element and a radially inner surface of the wall of the central channel there is another annular or at least essentially annular channel is formed.
  • a fluid conducted through the central channel can flow around the rod element or a corresponding axial fluid flow can be conducted annularly around the rod element in this section.
  • a tubular element extending at least along a part of an axial length of the annular channel is arranged in the annular channel surrounding the central channel in such a way that the annular channel is divided into two annular or at least essentially annular channels or two channels along an axial length of the tubular element Sub-channels is subdivided.
  • a first ring-shaped partial channel extends in particular between an outer (top) surface of the wall of the central channel and an inner (top) surface of the wall of the tubular element.
  • a second annular sub-channel extends between an outer (top) surface of the wall of the tubular member and an inner (top) surface of a wall of the annular channel.
  • the rod element and the tube element are each expediently in the form of a rod, cylinder or tube or at least essentially in the shape of a rod, cylinder or tube.
  • the rod element is designed as an elongate rod or as a rod or tube.
  • the tubular element is designed in particular as a tube or hollow rod.
  • a length or dimension of the rod element and of the tube element in the axial direction is expediently greater than a thickness or dimension in the radial direction.
  • the rod element can be designed as a fixed, massive or solid body.
  • the rod element can also be hollow on the inside or designed as a hollow body, but expediently in such a way that a fluid can only flow around the rod element, but not through the rod element.
  • the rod element can in particular be self-contained, for example by means of radial boundary surfaces or boundary planes.
  • the tubular element is expediently hollow on the inside or designed as a hollow body.
  • the rod element and the tube element are each arranged concentrically or at least essentially concentrically with respect to the central channel.
  • a symmetrical or at least essentially symmetrical central annular flow channel can thus be generated around the rod element.
  • the ring-shaped partial channels can expediently be produced symmetrically or at least essentially symmetrically.
  • an obstacle or an obstruction in individual channels of the burner in particular in the form of a rod-shaped element in the central channel and/or in the form of a tubular element in the annular channel, increases the efficiency of the burner can be.
  • the mixing or thorough mixing of the individual fluids when exiting the burner can be influenced in particular by the rod element or the tubular element.
  • This mixing behavior of the fluids has a direct influence on the partial oxidation reaction in particular.
  • This mixing behavior can be particularly expediently improved and optimized by the rod element or the tubular element, so that the efficiency of the partial oxidation reaction and the burner operation can be improved.
  • Flow dynamics and burner geometry can expediently be influenced by the rod element or the tube element.
  • a flow behavior or flow profile of the fluid in the central channel or the ring-shaped channel can be improved, in particular by vortices or eddies at a front end of the rod element or the tubular element viewed in the direction of flow.
  • Such vortices can in particular increase turbulence in the fluid flow and the fluid flow can be diverted, for example, in the direction of the center of the axial channel.
  • the rod element or the tube element can achieve a narrowing of the cross section of the respective channel, as a result of which in particular a geometry of the burner or of the individual channels can be changed relative to one another.
  • a ratio of the diameters of the individual channels to one another can thus be influenced.
  • a ratio of the fluid velocities, in particular the exit velocities of the fluids when exiting the burner can be influenced.
  • the flow dynamics and burner geometry influenced in this way can expediently influence the behavior of the individual fluid streams when exiting the burner and thus the way in which the fluids for the partial oxidation mix, in particular downstream of the burner and upstream of the corresponding partial oxidation reaction .
  • the efficiency of the burner or burner operation can be directly influenced and increased in a particularly expedient manner.
  • an amount of fuel required for the partial oxidation can be reduced by an improved or optimized mixing behavior, in particular with the same or even improved composition and amount of the synthesis gas produced.
  • the improved mixing behavior in particular a shortening of the flame or burner flame and a more homogeneous gas composition can be achieved downstream of the combustion zone.
  • a residence time of the supplied fluids in a reaction zone of the partial oxidation can be increased and shifted in the direction of a state of equilibrium, so that the required amount of fuel can be reduced.
  • the costs for operating the burner and the quantities of fuel required can thus be reduced.
  • a length and/or size of the reactor can be reduced.
  • the rod element or the tubular element can also make it possible, in particular, to operate the burner in part-load operation, for example at a maximum of 70% of full-load operation.
  • it is usually not or at least hardly possible to operate a burner for partial oxidation in part-load operation since such burners are conventionally often only designed for full-load operation, for example between 70% and 100%.
  • For burner operation at partial load it is often necessary to replace the entire burner with another burner model that is designed for a correspondingly lower maximum full-load operation.
  • the burner can be operated flexibly at full load or reduced partial load, depending on requirements.
  • the temperatures of the individual fluids can be appropriately selected as required, in particular from room temperature up to high values of, for example, up to 500° C., for example if the fluids are preheated before being fed into the respective channel.
  • the pressure in the reactor can also be chosen flexibly, expediently from the ambient air pressure up to high values of, for example, up to 120 bar.
  • the rod element and the tubular element can each be sufficiently cooled automatically by the fluid flowing around in a ring shape, so that the rod element and the tubular element are each protected from high thermal loads in the burner, in particular from high temperatures of the burner flame.
  • no further elements are required, in particular no additional cooling elements for the rod element and the tubular element.
  • the central channel can be provided for supplying the oxidizing agent or the oxygen-containing gas.
  • the central channel can be provided as an oxygen lance or an oxygen injector with an integrated rod element.
  • the central channel can be provided for supplying the feed or the carbon-containing gas or the carbon-containing fluid.
  • at least one axial section of the rod element hereinafter referred to as the first axial section without loss of generality, has a profiled surface, in particular an outer surface of the rod element viewed in the radial direction.
  • at least one axial section of the tubular element referred to below as the second axial section without loss of generality, advantageously has a profiled surface.
  • An inner surface, viewed in the radial direction, and/or an outer surface, viewed in the radial direction, of the tubular element can be correspondingly profiled.
  • Such a profiled surface is to be understood in particular as meaning that the surface of the rod or tube element has a predetermined pattern or that a cross-sectional outline of the respective element has a predetermined shape.
  • the surface profile can in particular be uniform and constant over the length of the corresponding axial section or, for example, can also change along the axial length and/or in the circumferential direction.
  • the rod element or the tubular element can each have such a profiled surface along the entire axial length.
  • the bar element can be manufactured as a smooth bar with a smooth or at least substantially smooth surface to which additional material is applied and/or from which material is removed in order to obtain the corresponding surface profile.
  • the bar element can also already be manufactured in one piece with the correspondingly profiled surface, for example.
  • the profiled surface of the tube element can also be produced accordingly.
  • the fluid flow in the central channel or in the annular channel can be influenced by this corresponding surface profile or by the special shape of the respective profile, in particular in such a way as to optimize the mixing behavior of the fluids at the burner exit.
  • the special shape or the special pattern of the surface profile can be selected in particular as a function of the fluid flow or in such a way as to influence the fluid flow in the respective channel in a predetermined manner.
  • the surface of the rod element is profiled at least in the first axial section such that a fluid flowing between the rod element and the wall of the central channel is accelerated in the direction of flow, preferably accelerated continuously.
  • the surface of the tubular element is at least in that second axial section is advantageously profiled in such a way that a fluid flowing along this surface is in particular continuously accelerated in the direction of flow.
  • the ratio of the fluid velocities in the individual channels can thus be influenced, in particular the ratio of the exit velocities of the fluids when exiting the burner.
  • a cross-sectional outline of the rod element at least in the first axial section, has alternating radially outwardly extending bulges or projections or elevations and radially inwardly extending indentations or valleys or depressions.
  • a cross-sectional outline of the tubular element preferably has, at least in the second axial section, viewed in the circumferential direction alternating radially outwardly extending bulges or projections or elevations and radially inwardly extending indentations or valleys or depressions.
  • the cross-sectional outline is to be understood in particular as the contour, shape, outer line, inner line or outline of the cross-sectional area of the rod or tube element oriented perpendicularly to the axial direction.
  • the surface shape or the surface profile of the rod or tube element is thus in each case designed as a wave or vibration pattern.
  • the individual bulges and indentations can, for example, each have individual shapes and lengths that may differ from one another. Expediently, the bulges and the indentations each have the same shape or at least essentially the same shape, so that the respective cross-sectional outline is embodied symmetrically or at least essentially symmetrically. With such a cross-sectional shape, an axial acceleration of the fluid flowing around the respective element can be achieved in a particularly expedient manner.
  • the profiled surface of the rod element and/or the surface of the tube element preferably comprises grooves or ridges running in the axial direction at least in the respective first or second axial section.
  • These grooves are each formed in particular as radial indentations in the surface of the rod element or the tubular element.
  • these grooves can be distributed regularly in the circumferential direction.
  • An axial acceleration of the fluid flow in the burner channels can also be achieved particularly expediently by such grooves.
  • the surface of the rod element and/or the surface of the tubular element has a twisted or twisted profile in the circumferential direction at least in the respective first or second axial section.
  • the cross-sectional outline of the respective element is not constant along the axial length.
  • the orientation of the cross-sectional outline can change over the axial length in the circumferential direction.
  • the rod element or the tubular element can thus expediently at least partially have a twisted, twisted or twisted surface profile or a radial profiling with an angle of rotation in the circumferential direction.
  • the surface of the rod element and/or the tube element can each have a helical or spiral pattern or a twist structure.
  • the surface of the rod or tube element can each have the above-explained bulges and indentations or grooves, which, however, do not run axially constant or in a straight line, but run radially and in the circumferential direction, for example spirally.
  • a twist in the fluid flow can be induced particularly expediently by such a profiled surface. In this way, the flow dynamics within the burner, the mixing behavior of the fluids and the burner efficiency can be influenced and improved in a particularly expedient manner.
  • the rod element and/or the tube element can each expediently also not have a profiled surface.
  • the rod element or the tubular element can each be cylindrical and/or tubular and/or a surface of the rod element or the tubular element can each have a circular or at least essentially circular cross-sectional outline.
  • the rod element can expediently be designed as a fixed, solid rod or as a hollow cylinder or as a tube that is hollow on the inside.
  • the flow dynamics within the burner and the mixing behavior of the fluids can be appropriately influenced and improved by the size and position of such a rod element or tubular element.
  • At least one axial section of a wall of the central channel and/or at least one axial section of a wall of the at least one ring-shaped channel is in each case profiled.
  • the respective channel is expediently delimited radially outwards or in the radial direction outwards by the corresponding wall.
  • This wall is thus to be understood in particular as a radial wall or boundary wall of the respective channel.
  • the wall of the respective channel is profiled accordingly, in particular in such a way that both the radially inner (top) surface of the respective wall, i.e.
  • the wall inner surface or wall inside, and the radially outer (top) surface of the respective channel wall, i.e the wall outer surface or wall outside, are profiled accordingly or have a corresponding shape or a corresponding pattern. Furthermore, it is also conceivable that expediently only the inner surface or only the outer surface of the respective wall has a corresponding shape or a corresponding profile.
  • the profiled walls of the respective channels and the profiled surface of the rod element and the tube element can be matched to one another or predetermined as a function of one another in order to be able to influence the individual fluid flows in a desired manner.
  • the respective channel walls can also be correspondingly profiled along their entire axial length. An axial acceleration of the fluid flow in the respective channel can expediently also be achieved by this profiling of the respective channel walls.
  • a shape of a cross-sectional outline corresponds to the profiled surface of the rod element and/or a shape of a cross-sectional outline to the profiled surface of the tubular element and/or a shape of a cross-sectional outline to the profiled wall of the central channel and/or a shape of a cross-sectional outline to the wall of the at least one annular channel each other or preferably these shapes correspond to each other at least substantially.
  • the flow dynamics can be influenced particularly expediently and an axial acceleration of the fluid flow can be achieved by means of surface or wall profiles that are coordinated with one another in this way.
  • both the shape and the alignment of the individual cross-sectional outlines can be identical or essentially identical to one another.
  • the orientations of the individual cross-sectional outlines are different, that is to say that the cross-sectional outlines are shifted to one another by a predetermined angle or are rotated relative to one another in the circumferential direction.
  • the number and the specific shapes of the individual profiles of the rod element or tubular element surface and the channel walls and their orientations relative to one another are particularly expediently predetermined as a function of the fluids conducted through the individual channels and their properties.
  • the shape, number and orientation of the individual profiled surfaces are specified in such a way as to influence the mixing behavior of the fluids in the best possible way and to increase the efficiency of the burner in the best possible way.
  • the rod element is preferably arranged in the central channel at least from a rear end of the central channel, viewed in the direction of flow, to a position which is a predeterminable or predetermined axial distance from a front end of the central channel, viewed in the direction of flow.
  • the front end corresponds in particular to an end of the burner tip at which the individual fluids are emitted or let out of the burner.
  • This position, up to which the rod element extends can be specified in particular in order to influence flow-dynamic conditions within the central channel and thus the fluid flow in a desired manner.
  • the rod element can also extend beyond the front end or a fluid outlet of the central channel, so that the value zero or a value less than zero is specified for the axial distance.
  • the rod element is arranged in the central channel, preferably at least from a fluid connection for supplying a fluid into the central channel up to a position that is a definable or predetermined axial distance from a front end of the central channel, viewed in the direction of flow is.
  • a fluid connection for supplying a fluid into the central channel up to a position that is a definable or predetermined axial distance from a front end of the central channel, viewed in the direction of flow is.
  • an annular fluid flow is thus formed in the central channel from that axial position at which the fluid is conducted into the channel.
  • the tubular member is in the annular channel at least from a forward end of the annular channel, viewed in the flow direction, to a Arranged position, which is at a predetermined or predetermined axial distance from a viewed in the direction of flow rear end of the annular channel away.
  • the front end of the annular channel also corresponds in particular to an end of the burner tip at which the individual fluids are emitted or let out.
  • the position up to which the tubular element extends is specified in particular in such a way as to influence flow-dynamic conditions and the fluid flow in a desired manner.
  • the tubular element is arranged in the annular channel, preferably at least from a fluid connection for supplying a fluid into the annular channel up to a position which is a definable or predetermined axial distance from the front end of the annular channel, viewed in the flow direction .
  • the tube element can also extend beyond the front end of the annular channel.
  • a displacement mechanism is provided and set up to displace the rod element in the central channel in the axial direction and/or to displace the tube element in the annular channel in the axial direction.
  • the position up to which the rod element extends in the central channel or up to which the tube element extends in the ring-shaped channel can be flexibly adjusted and changed as required.
  • the axial position of the rod element or of the tubular element can be adjusted depending on the operating conditions of the burner, so that the mixing behavior of the fluids can always be optimized.
  • the rod element and/or the tubular element is/are preferably axially displaced in each case depending on an operating mode of the burner, for example depending on whether the burner is to be operated under full load or under partial load.
  • the rod element and/or the tube element can be displaced axially, preferably depending on a pressure and/or a temperature of the fluids that have flowed through the individual channels.
  • the rod element is shifted in the central channel in the axial direction in such a way to a fluid flow within the central channel in a to influence in a predetermined way.
  • the tube element is displaced in the annular channel in the axial direction in such a way as to influence a fluid flow within the annular channel in a predetermined manner.
  • the flow dynamics within the burner channels and the burner geometry can be specifically influenced in a desired manner and also the mixing or mixing of the individual fluids when exiting the burner.
  • the rod element and/or the tube element is/are thus particularly expediently displaced axially in order to influence and improve the mixing behavior and thus the efficiency of the partial oxidation reaction and the burner operation in a targeted manner in a predetermined manner.
  • the rod element or the tubular element can be removed from the central channel or the ring-shaped channel in a structurally simple and inexpensive manner by means of the displacement mechanism and reinserted, e.g. in the event of damage or for maintenance, cleaning or repair work.
  • the rod element or the tubular element can also be removed by the displacement mechanism and replaced by a respective new element, for example with a different diameter and/or with a different profiled surface.
  • an individual rod element or tubular element can be used for different fluid pressures and/or fluid temperatures and also, for example, for different load operations.
  • the respective optimal rod or tube element with the respective optimal diameter and/or surface profile can thus be used in order to be able to influence the fluid exit and mixing behavior in the best possible way for the most efficient possible burner operation
  • a diameter of the rod element in the central channel preferably corresponds to at least 25% of the diameter of the central channel, preferably at least 40% of the diameter of the central channel, more preferably at least 50% of the diameter of the central channel.
  • the diameter of the rod element is to be understood in particular as an average diameter.
  • a statistical or arithmetic mean should be understood as the corresponding diameter of the rod element at a specific axial position.
  • the diameter of the central Channel in particular also to understand a mean diameter, in particular a statistical or arithmetic mean at a specific axial position of the central channel.
  • the diameter of the rod element can in particular be constant over its axial length. Expediently, the diameter of the rod element can also vary over its axial length, for example according to a predetermined course or a predetermined profile. A longitudinal section outline of the rod element therefore also has a predetermined shape or predetermined pattern, particularly expediently.
  • the specific shape, diameter and axial position of the rod element and the tube element are each selected in such a way that the burner, in particular the burner tip, is not damaged by the changes in the fluid mixing behavior, the partial oxidation reaction, the flame, the combustion zone, etc.
  • the present invention also relates to a burner for carrying out partial oxidation, having a central channel and at least one annular channel surrounding the central channel, through which a fluid can flow in order to carry out the partial oxidation, at least one axial section of a wall of the central Channel and / or at least one axial section of a wall of the at least one annular channel is each formed profiled.
  • a burner of this type therefore has no rod element and no tube element as described above, but rather profiled walls of individual or all channels.
  • the mixing or thorough mixing of the individual fluids when exiting the burner can also be influenced by such a profiling of channel walls and the efficiency of the burner can be increased.
  • the flow dynamics and burner geometry can be influenced by the profiling, and the flow behavior or the flow profile of the fluids in the channels can be improved. Vortices can be conveniently generated and turbulence of the fluid flows can be increased.
  • the geometry of the burner or the individual channels relative to each other can be changed and the ratio of the diameters of the individual channels to one another can be influenced. For example, the shear area between the fluid streams and the ratio of the fluid velocities can be affected.
  • the flow dynamics and burner geometry influenced in this way can expediently change the behavior of the individual fluid streams when exiting the burner and thus the way in which the fluids for the partial oxidation mix, so that the efficiency of the burner can be increased.
  • the amount of fuel required and the cost of burner operation can be reduced.
  • the length and/or size of the reactor can be reduced.
  • the burner can be operated at partial load, for example at a maximum of 70% of full-load operation.
  • there is no need for any restrictions with regard to the fluids conducted through the individual channels. Temperatures of the fluids and the pressure in the reactor can be suitably selected as required.
  • the respective channel walls can be profiled particularly expediently in accordance with the above explanations with regard to the rod element and the tube element.
  • a cross-sectional outline of the respective channel wall at least in the respective axial section viewed in the circumferential direction, can alternately have bulges running radially outwards and indentations running radially inwards.
  • a surface of the respective channel wall can preferably have grooves running in the axial direction, at least in the respective axial section.
  • the surface of the respective channel wall can preferably have a profile that is twisted in the circumferential direction, at least in the respective axial section.
  • the surface of the respective channel wall is particularly preferably profiled in such a way that a fluid is in particular continuously accelerated in the direction of flow.
  • Figure 1a shows a preferred embodiment of a burner 100 according to the invention for carrying out a partial oxidation in a schematic sectional view.
  • the burner 100 is designed as a multi-channel burner and comprises a central channel 110 and an annular channel 120 surrounding this central channel 110. It is understood that the burner can also have further annular channels which comprise the central channel 110 and the annular channel 120 can surround concentrically.
  • a cooling channel 130 for a coolant for cooling the burner 100 can be provided in a wall 102 of the burner 100 , for example.
  • a cooling fluid inlet 131 can be connected to a coolant supply, for example, so that a cooling fluid, e.g. water, can flow continuously from the cooling fluid inlet 131 through the cooling channel 130 to a cooling fluid outlet 132 .
  • this wall 102 of the burner 100, in which the cooling channel 130 is provided can correspond to a wall 123 of the annular channel 120.
  • the burner 100 can also have a cooling coil as a cooling device, for example.
  • the burner 100 can be uncooled and has no cooling device.
  • a fluid for carrying out the partial oxidation can flow through the channels 110, 120 in each case.
  • the two channels 110, 120 are each connected to a corresponding fluid supply via a corresponding fluid inlet or fluid connection 111, 121, so that a corresponding fluid can flow from the fluid inlet 111 or 121 to a fluid outlet 112 or 122 in a burner tip 101.
  • a closable flange connection 115, 125 is provided, for example.
  • the respective fluids are emitted from the combustor to produce a synthesis gas in the form of a mixture of carbon monoxide and hydrogen by partial oxidation.
  • the annular channel 120 runs at a predetermined angle of inclination or outlet angle towards the central channel 110, so that the respective fluid from the fluid outlet 122 is discharged at this corresponding angle of inclination or outlet relative to the fluid flow from the fluid outlet 112 of the central channel 110 is emitted.
  • the fluid inlets or fluid connections 111, 121 of the channels 110, 120 can be flexibly connected to a corresponding fluid supply.
  • an oxidizing agent in the form of an oxygen-containing gas eg oxygen or air or an air-oxygen mixture
  • a preheated fuel containing hydrocarbons for example natural gas, can be conducted through the annular channel 120 .
  • the central channel 110 can be connected via its fluid inlet or fluid connection 111 to an oxidant supply, for example, and the annular channel 120 can be connected via the fluid inlet or fluid connection 121 to a fuel supply, for example.
  • the supplied fuel and/or the supplied oxygen-containing gas can each contain a moderator, for example in the form of water vapor, in order to regulate a ratio between hydrogen and carbon monoxide in the synthesis gas produced and/or to automatically flush in the event of a fault or malfunction of the burner 100 to perform.
  • a rod element 140 is arranged in the central channel 110 and extends at least along part of an axial length of the central channel 110 .
  • This rod element 140 is arranged in such a way that an annular or at least essentially annular channel 142 is formed between the rod element 140 or between its surface 141 and a wall 113 of the central channel 110 or an inner surface of this channel wall 113 .
  • Flow dynamics and burner geometry are influenced by rod element 140, in particular in such a way that the behavior of the individual fluid streams when exiting the burner is improved and the burner efficiency is thus increased.
  • the amount of fuel required for the partial oxidation can be reduced by the rod element 140 and the burner flame can be shortened and a more homogeneous gas composition can be achieved downstream of the combustion zone. Costs for operating the burner 100 and required amounts of fuel can be reduced.
  • the rod element 140 is arranged in the central channel 110 up to a position which is a predeterminable or predetermined axial distance from the front end or from the fluid outlet 112 of the central channel 110 .
  • This position, up to which the rod element 140 extends, is specified in particular in such a way as to influence flow-dynamic conditions and thus the fluid flow within the central channel 110 in a desired manner. Furthermore, it is also conceivable that the rod element 140 extends beyond the fluid outlet 112 .
  • the rod element 140 can be axially displaced in the central channel 110 by means of a displacement mechanism 160 .
  • this axial position, up to which the rod element 140 is arranged, can be flexibly varied by means of the displacement mechanism 160 and can be set, for example, depending on the current operating mode of the burner, for example depending on the current pressures and temperatures of the individual fluids.
  • the rod element 140 can be adjusted by means of the Shifting mechanism 160 can also be removed from the central channel 110 through the flange connection 115, for example for maintenance or repair work, or in order to exchange the rod element 140 for another rod element 140.
  • a tube element can also be provided in the annular channel as an alternative or in addition to the rod element 140 in the central channel, as described below with reference to FIG Figure 1b to be explained, with identical reference numerals in the Figures 1a and 1b designate the same or structurally identical elements.
  • Figure 1b shows burner 100 Figure 1a according to a further preferred embodiment.
  • a tubular element 150 extending at least along part of an axial length of the annular channel 120 is arranged in the annular channel 120 surrounding the central channel 110 .
  • the tubular element 150 divides the annular channel 120 along an axial length of the tubular element 150 into two annular or at least essentially annular channels or partial channels 151 and 152 .
  • a first annular sub-channel 151 extends between an outer (upper) surface of the wall 113 of the central channel 110 and an inner (upper) surface 153 of the wall of the tubular member 150.
  • a second annular sub-channel 152 extends more specifically between an outer (upper) -) surface 154 of the wall of the tubular element 150 and an inner (top) surface of a wall 123 of the annular channel 120.
  • the tubular element 150 influences flow dynamics and burner geometry in particular in such a way that the behavior of the individual fluid streams when exiting the burner 100 is improved and the burner efficiency is thus increased. For example, the amount of fuel required for the partial oxidation can be reduced and a shortening of the burner flame and a more homogeneous gas composition downstream of the combustion zone can be achieved. Costs and required amounts of fuel can be reduced.
  • the tube element 150 can be arranged in the annular channel 120 from a front end 122 or the fluid outlet 122 of the annular channel 120 as viewed in the direction of flow to a position which is at a predeterminable axial distance from a rear end of the annular channel when viewed in the direction of flow Channel 120 is removed.
  • the tubular element 150 can be attached to the central channel 110 or to the wall 113 of the central channel 110 via a suitable suspension 155 .
  • the tubular element 150 can be attached to the flange connection 125, for example, via a corresponding suspension 156.
  • the tubular element 150 can also be arranged in the ring-shaped channel 120 at least from the fluid connection 121 for supplying the respective fluid into the ring-shaped channel 120 up to a position which is a predeterminable axial distance from the front end 122 of the ring-shaped channel 120 .
  • the displacement mechanism 160 can also be configured to axially displace the tubular element 150 in the annular channel 110, e.g. depending on the current pressures and temperatures of the individual fluids. Furthermore, the tubular element 150 can also be expediently removed from the annular channel 120 by the displacement mechanism 160 through the flange connection 125, for example for maintenance or repair work or to exchange it for another tubular element 150.
  • the rod element 140 is in particular in the form of a rod, cylinder or tube and can have a round or at least substantially round cross-sectional area.
  • the rod element 140 can have a profiled surface, at least along an axial section or also along the entire axial length.
  • a cross-sectional outline or a cross-sectional contour particularly expediently has a predetermined shape or a predetermined pattern.
  • the surface of the rod element 140 is profiled in such a way that the fluid in the annular channel 142 between the rod element 140 and the wall 113 of the central channel 110 is accelerated in the direction of flow.
  • the tubular element 150 can also have a round or at least substantially round cross-sectional area or also a profiled surface at least along an axial section.
  • a cross-sectional outline or a cross-sectional contour of the tubular element 150 can expediently have a predetermined shape or a predetermined pattern.
  • the inner surface 153, viewed in the radial direction, and/or the outer surface 154, viewed in the radial direction, of the wall of the tube element 150 can be correspondingly profiled.
  • the respective surface can be profiled in such a way that the fluid flowing along this surface is accelerated in the direction of flow.
  • the wall 113 of the central channel 110 and/or the wall 123 of the ring-shaped channel 120 can also have a profiled design, as illustrated below with reference to FIG figure 2 should be explained.
  • FIG. 2a to 2e a preferred embodiment of a burner according to the invention is shown in a schematic cross-sectional view.
  • the in the Figures 2a to 2e burners shown can each be structurally identical or at least essentially structurally identical to that in Figure 1a shown burner 100 may be formed.
  • the burner 100a shown has a central channel 110a and an annular channel 120a.
  • a rod element 140a with a profiled surface 141a is arranged in the central channel.
  • the surface 141a is profiled in such a way that the cross-sectional outline of the rod element 140a, viewed in the circumferential direction, has alternating radially outwardly extending bulges and radially inwardly extending indentations. These bulges and indentations form grooves running in particular in the axial direction on the surface 141a of the rod element 140a. Expediently, the fluid flowing in the central channel 110a can be continuously accelerated in the flow direction by this surface shape of the rod element 140a.
  • the bulges and indentations do not run axially in a straight line, but are twisted, twisted or twisted in the circumferential direction over the axial length of the rod element 410a, so that the rod element 410a has a profile that is twisted in the circumferential direction.
  • a wall 113a of the central channel 110a as well as a wall 123a of the annular channel 120a are shown in the example of FIG Figure 2a each round or at least substantially round.
  • a tube element can also be provided in the annular channel 120a, the inner and outer surface of which is profiled in accordance with the surface 141a of the rod element 140a.
  • the burner 100b shown has a central channel 110b with a rod member 140b and an annular channel 120b.
  • the surface 141b of this rod element 140b is in accordance with Figure 2a profiled rod element 140a shown, with radial bulges and indentations arranged alternately in the circumferential direction.
  • the wall 113b of the central channel 110b is also profiled.
  • a shape of a cross-sectional outline of the profiled surface 141b of the rod member 140b corresponds to a shape of a cross-sectional outline of this profiled wall 113b of the central channel 110b.
  • the channel wall 113b also has, in its cross-sectional outline, radially outwardly extending bulges and radially inwardly extending indentations arranged alternately in the circumferential direction.
  • the channel wall 123b of the ring-shaped channel 120b is round and not profiled.
  • a tube element may further be provided in the annular channel 120b with a profiled surface, a shape of this profiled surface corresponding, at least substantially, to the shapes of the surfaces 141b and 113b of the rod element 140b and the central channel 110b respectively.
  • Burner 100c shown is also the channel wall 123c of the annular channel 120c profiled.
  • a rod member 140c of the burner 100c has a profiled surface 141c corresponding to the rod elements 140a and 140b of FIG Figures 2a and 2b on.
  • a wall 113c of a first channel 110c is made corresponding to the channel wall 113b Figure 2b profiled trained.
  • the shapes and orientations of the profiles of the channel walls 113c and 123c and the surface 141c of the rod element 140c correspond to one another, at least essentially.
  • a tubular element can also be provided in the annular channel 120c with a profiled surface, so that the shapes of the surface of this tubular element and of the surfaces 141c, 113c and 123c of the rod element 140c, central channel 110c and annular channel 120c correspond to one another, at least essentially.
  • Figure 2d 12 shows a burner 100d, a channel wall 113d of a first channel 110d and a channel wall 123d of an annular channel 120d each being profiled, and a rod element 140d having a profiled surface 141d. Shapes and orientations of these profiles of the channel walls 113d, 123d and the rod element surface 141d are partially different in this example.
  • the shape of the profile of the channel wall 123d of the annular channel 120d corresponds, at least substantially, to the shape of the profile of the surface 141d of the rod member 140d
  • the orientations of these profiles are different. For example, these profiles are twisted relative to each other in the circumferential direction.
  • the profile of channel wall 113d of central channel 110d differs from the profiles of channel wall 123d and rod surface 141d.
  • the profile of this channel wall 113d has a smaller number of radial bulges and indentations.
  • the special shapes and orientations as well as the number of individual profiles of the channel walls and the rod surface can be selected depending on the fluids conducted through the individual channels and their special properties, so that the mixing behavior of the fluids is influenced in the best possible way and the burner efficiency is improved in the best possible way can be.
  • a tubular element can be provided in the annular channel 120c with an individual profiled surface.
  • the burners 100e shown have neither the channel walls nor the rod element on profiled surfaces.
  • the wall 113e of the central channel 110e and the wall 123e of the annular channel 120e are each round or at least substantially round.
  • the rod element 140e can be designed as a fixed, solid rod or as a hollow cylinder, with the surface 141e of the rod element 140e having a circular or at least essentially circular cross-sectional outline.
  • the size and position of the rod element 140e can suitably be selected in such a way that the flow dynamics within the burner 100e and the mixing behavior of the fluids are suitably influenced and improved.
  • FIG. 3a to 3c a preferred embodiment of a burner according to the invention is shown in a schematic cross-sectional view. No rod element is provided in such a burner, but the walls of one or more channels are profiled.
  • such a burner 200a may have a central channel 210a and an annular channel 220a, with a wall 213a of the central channel 210a being profiled.
  • the channel wall 213a can have radially outwardly extending bulges and radially inwardly extending indentations arranged alternately in the circumferential direction in its cross-sectional outline. These bulges and indentations may be straight in the axial direction or twisted in the circumferential direction over the axial length of the channel 210a.
  • the channel wall 223a of the ring-shaped channel 220a is round and not profiled.
  • both the wall 213a of the central channel 210b and the wall 223b of the annular channel 220b can be profiled in the combustor 200b.
  • the shapes and orientations of the profiles of the channel walls 213b and 223b correspond to one another, at least substantially.
  • the channel wall 213c of the central channel 210c and the channel wall 223b of the annular channel 220c are each configured in a profiled manner. Shapes and orientations of these profiles of the channel walls 213c and 223c are different in this example.
  • the profile of channel wall 213c has a smaller number of radial bulges and indentations than the profile of channel wall 223c.
  • the flow dynamics, the burner geometry and the mixing behavior or mixing of the fluids after the burner outlet can also be influenced by the profiling of the channel walls, and thus the efficiency of the partial oxidation reaction and the burner operation can be improved. The amount of fuel required and the operating costs of the burner can be reduced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
EP21020497.0A 2021-10-07 2021-10-07 Brûleur pour effectuer une oxydation partielle Withdrawn EP4163545A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21020497.0A EP4163545A1 (fr) 2021-10-07 2021-10-07 Brûleur pour effectuer une oxydation partielle
PCT/EP2022/025464 WO2023057089A2 (fr) 2021-10-07 2022-10-06 Brûleur pour la mise en oeuvre d'une oxydation partielle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21020497.0A EP4163545A1 (fr) 2021-10-07 2021-10-07 Brûleur pour effectuer une oxydation partielle

Publications (1)

Publication Number Publication Date
EP4163545A1 true EP4163545A1 (fr) 2023-04-12

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ID=78211782

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Application Number Title Priority Date Filing Date
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EP (1) EP4163545A1 (fr)
WO (1) WO2023057089A2 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543003C (de) * 1927-10-02 1932-02-02 Carl Salat Brenner fuer staubfoermige, fluessige und gasfoermige Brennstoffe
US3255966A (en) 1964-09-10 1966-06-14 Texaco Development Corp Annulus type burner for the production of synthesis gas
US4351647A (en) * 1980-07-14 1982-09-28 Texaco Inc. Partial oxidation process
US4443228A (en) * 1982-06-29 1984-04-17 Texaco Inc. Partial oxidation burner
US4888031A (en) 1988-05-26 1989-12-19 Shell Oil Company Process for partial oxidation of a liquid or solid and/or a gaseous hydrocarbon-containing fuel
DE4140063A1 (de) * 1991-12-05 1993-06-09 Hoechst Ag, 6230 Frankfurt, De Brenner zur herstellung von synthesegas
US5235813A (en) * 1990-12-24 1993-08-17 United Technologies Corporation Mechanism for controlling the rate of mixing in combusting flows
DE102009025703A1 (de) * 2009-06-20 2010-12-23 Linde Aktiengesellschaft Kohlevergasungsbrenner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543003C (de) * 1927-10-02 1932-02-02 Carl Salat Brenner fuer staubfoermige, fluessige und gasfoermige Brennstoffe
US3255966A (en) 1964-09-10 1966-06-14 Texaco Development Corp Annulus type burner for the production of synthesis gas
US4351647A (en) * 1980-07-14 1982-09-28 Texaco Inc. Partial oxidation process
US4443228A (en) * 1982-06-29 1984-04-17 Texaco Inc. Partial oxidation burner
US4888031A (en) 1988-05-26 1989-12-19 Shell Oil Company Process for partial oxidation of a liquid or solid and/or a gaseous hydrocarbon-containing fuel
US5235813A (en) * 1990-12-24 1993-08-17 United Technologies Corporation Mechanism for controlling the rate of mixing in combusting flows
DE4140063A1 (de) * 1991-12-05 1993-06-09 Hoechst Ag, 6230 Frankfurt, De Brenner zur herstellung von synthesegas
DE102009025703A1 (de) * 2009-06-20 2010-12-23 Linde Aktiengesellschaft Kohlevergasungsbrenner

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WO2023057089A2 (fr) 2023-04-13
WO2023057089A3 (fr) 2023-06-01

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