• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method for operating a stationary power plant (1) comprising a gas engine (2) with at least one prechamber (3) and at least one main combustion chamber (4), the stationary power plant (1) being supplied with a gas flow (5), in particular substantially continuously comprising a flame retardant gas, wherein in the stationary power plant (1) the gas flow (5) is divided into a main flow (5a) and a partial flow (5b), the main flow (5a) being directed to the at least one main combustion chamber (4) is supplied and wherein the partial flow (5b) prepared to increase the flammability and the at least one pre-chamber (3) of the gas engine (2) is supplied and a stationary power plant with a gas engine.
    公开号:AT511734A1
    申请号:T1065/2011
    申请日:2011-07-20
    公开日:2013-02-15
    发明作者:Friedrich Gruber；Guenther Wall
    申请人:Ge Jenbacher Gmbh & Co Ohg；
    IPC主号:
    专利说明:

    70021 30 / hn 1
    The invention relates to a method for operating a stationary power plant comprising a gas engine with at least one prechamber and at least one main combustion chamber, the stationary power plant is supplied - in particular substantially continuous - gas stream comprising a flame-retardant gas, and a stationary power plant, in the proposed method is used.
    Flame-retardant gases are often referred to as low BTU (British thermal unit) gases. Often these are gases or gas mixtures with a low calorific value, which is for example only one third or one half of the calorific value of methane. Such gases are, for example, associated gases, which are produced during crude oil production or gases from methane-poor natural gas sources. In particular, a flame-retardant gas is understood as meaning a gas having a volume-related calorific value of less than 22.3 megajoules per standard cubic meter (MJ / Nm.sup.3). In comparison, a typical natural gas of quality category H has a volume calorific value of approx. 37 MJ / Nm3.
    Due to their low calorific value, flammable gases often have too low a tendency to ignite or flammability, so that they are not suitable for direct operation of an internal combustion engine. For example, US 2007/0209642 A1 shows a power plant to which a low BTU gas is supplied, wherein the gas stream supplied to the power plant is supplied in a gas mixer with a lower amount of air for such a gas compared to higher-calorific gases in order to obtain a suitable air-fuel ratio for to set an operation of an internal combustion engine of the power plant.
    The object of the invention is to provide a comparison with the prior art improved method and an improved stationary power plant, by or by the operation of an internal combustion engine of the stationary power plant, in particular a gas engine, with a stationary power plant supplied gas stream, a difficult flammable gas is allowed.
    This object is achieved in the proposed method according to the invention that in the stationary power plant, the gas stream is divided into a main stream and a partial stream, wherein the main stream is supplied to the at least one main combustion chamber and wherein the partial flow treated to increase the flammability and the at least one prechamber the gas engine is supplied.
    In order to achieve this object, the invention provides for a stationary stationary power plant that the stationary power plant comprises a distribution device, through which the gas stream can be divided into a main stream and a partial stream, wherein the main stream can be fed to the at least one main combustion chamber and the partial stream can be fed to at least one gas treatment device wherein the flammability of the partial flow can be increased by the at least one gas treatment device, wherein the partial flow prepared by the at least one gas treatment device can be supplied to the at least one prechamber of the gas engine.
    An advantage of the proposed method is that only part of the gas flow supplied to the stationary power plant is processed to increase the flammability. This recycled partial flow has an increased ignition resistance or flammability compared with the gas flow and is supplied to the prechambers of the gas engine. The increased flammability of the partial flow in the antechambers allows the Hauptbrenn spaces of the gas engine with the main stream, which was not treated by the gas treatment, can be operated. The small amount of treated gas for an antechamber is sufficient for the safe ignition of the untreated gas in the main combustion chamber associated with the prechamber. Preferably, it can be provided that a maximum of 5%, preferably a maximum of 2%, of the gas stream is diverted as a partial flow.
    According to a preferred embodiment it can be provided that the stationary power plant, a gas stream is supplied, which has a first laminar flame velocity less than or equal to 15 cm / s, preferably less than or equal to 12 cm / s, more preferably less than or equal to 10 cm / s, at is a combustion air ratio of 1
    The degree of flammability of a gas can be indicated by the laminar flame velocity of the gas. The laminar flame velocity of a gas or gas mixture is, as described in the pertinent literature, the rate at which the flame of the ignited gas or gas mixture moves normal to the flame front relative to the unburned gas or gas mixture. For the purposes of the invention, the term flame-retardant gas is understood as meaning a gas or gas mixture having a low laminar flame velocity, in particular a gas or gas mixture having a laminar flame velocity of less than 15 cm / s under standard conditions as described in the relevant literature, e.g. at a combustion air ratio of 1 and at atmospheric pressure.
    The determination of the laminar flame velocity of a gas can be carried out in a manner known in the art, e.g. by known experimental methods such as the Bunsen burner method or the flat flame method. In addition, numerical calculation methods are known to the person skilled in the art, by means of which the laminar flame velocity of a gas can be calculated from its gas composition. The gas components that substantially determine the laminar flame velocity of a gas are methane and carbon dioxide. Measured values of methane and carbon dioxide concentrations in the gas stream can be used as the basis for calculating the laminar flame velocity. The gas composition of the substantially continuous gas stream is typically not subject to large fluctuations, especially when the gas stream originates from a gas source of a mineral oil production.
    To increase the flammability of the partial flow may preferably be provided that the laminar flame velocity of the partial flow is increased by the gas treatment of the partial flow to a second laminar flame velocity, which is greater than the laminar
    Flame velocity before gas treatment. In this case, preferably by the gas treatment of the partial flow, the second laminar flame speed of the partial flow to a value greater than 10 cm / s, preferably greater than 30 cm / s, be increased at a combustion air ratio of 1.
    For gas treatment of the partial stream, devices known in principle in the prior art can be used in principle. Thus, a reforming device can be used for the gas treatment of the partial flow, wherein the partial flow is enriched with hydrogen from the reforming device.
    It can be used for gas treatment of the partial flow and a separator, wherein the separator is an inert gas, preferably carbon dioxide, is separated from the partial stream. Such a separator may, for example, be a membrane or an amine scrubber. The separated inert gas may be supplied to the main stream to avoid emission of the inert gas to the environment.
    Furthermore, it can be provided that a water electrolysis device is used for the gas treatment of the partial flow, wherein the substream is enriched with hydrogen from the water electrolysis device. It is particularly advantageous if the gas engine is connected to a generator, wherein the generator emits electrical energy, wherein a portion of the electrical energy emitted is supplied to the water electrolysis device. The resulting in the electrolysis of water oxygen can be supplied to the air flow, which is usually supplied to the main stream before being introduced into the main combustion chambers of the gas engine. As a result, the required amount of air flow can be reduced with the same combustion air ratio.
    In a particularly preferred embodiment of the invention can be provided that the gas stream is treated prior to the division into the main stream and the partial stream in a gas preparation, wherein the gas preparation, an inert gas, preferably carbon dioxide, is deposited from the gas stream or the gas stream is supplied , In this case, the gas stream, an inert gas, preferably carbon dioxide, are supplied by the gas preparation, if the first laminar flame velocity greater than 10 cm / s or by the gas preparation of the gas stream, an inert gas, preferably carbon dioxide deposited, if the first laminar flame speed is less than 10 cm / s.
    In order to be able to supply a gas with essentially constant flammability, in particular to the main combustion chambers of a gas engine, that embodiment is particularly advantageous in which the gas flow supplied to the stationary power plant is set or regulated by the gas preparation to a laminar main flow flame speed. In this case, the laminar mainstream flame speed can be adjusted or regulated to a value of 10 cm / s to 15 cm / s, preferably from 10 cm / s to 12 cm / s, at a combustion air ratio of 1 by the gas preparation. To be particularly advantageous, it has been found that when a deviation of the laminar main flow flame speed of a target value by the gas preparation, an inert gas, preferably carbon dioxide, is deposited from the gas stream or the gas stream is supplied, so that the laminar
    Main flow flame speed is tracked to the setpoint. By controlling the flammability of the main flow to a substantially constant major laminar flow flame speed, the gas engine is not subject to significant fluctuations in the gas quality supplied to it. This has the advantage that the gas engine runs more stable overall and the engine control needs less intervention. As a result, the gas engine can also be operated closer to knock or misfire limits, which is particularly advantageous in modern high-performance engines.
    The objects underlying the present invention are also achieved by a stationary power plant having the features of claim 16. Advantageous developments of this stationary power plant are set forth by the dependent claims.
    Further details and advantages of the present invention will be explained with reference to the following description of the figures. It shows or show:
    Fig. 1 is a schematic block diagram of an embodiment of the proposed stationary power plant and Fig. 2 to 6 further examples of proposed stationary power plants with different embodiments of a gas preparation device in schematic representations.
    1 shows a schematic representation of a stationary power plant 1, which comprises a gas engine 2 with an antechamber 3 and a main combustion chamber 4.
    The stationary power plant 1 is supplied with a substantially continuous gas stream 5, which comprises a flame-resistant gas. The gas stream 5 has a first laminar flame velocity Vi. Within the stationary power plant 1, the gas stream 5 is supplied to a distribution device 6 which divides the gas stream 5 into a main stream 5a and a part stream 5b. In the example shown, one percent of the gas stream 5 is branched off from the gas stream 5 as partial stream 5b by the distributing device 6. The remaining 99 percent of the gas stream 5 form the main stream 5a, which is supplied to the main combustion chamber 4 of the gas engine 2 after supplying air L.
    The partial flow 5b is fed to a gas treatment device 7. In the gas treatment device 7, the flammability of the partial flow 5b is increased. The increase in the flammability of the partial flow 5b can be effected, for example, by the fact that the at least one gas treatment device 7 is designed as a reforming device, wherein the partial flow 5b can be enriched with hydrogen by the reforming device. However, it can also be provided that the at least one gas treatment device 7 is designed as a separation device, wherein an inert gas, preferably carbon dioxide, can be separated from the partial flow 5b by the separation device. Furthermore, the at least one gas treatment device 7 can be designed as a water electrolysis device, wherein the substream 5b can be enriched with hydrogen by the water electrolysis device. It is particularly advantageous if the gas engine 2 with a 7 7 • • • ♦ • II * ··· «• · · ·« «· · * · V ·» · · · · · «· I ·«
    Generator is connected, wherein the generator emits electrical energy, wherein a portion of the electrical energy emitted can be supplied to the water electrolysis device.
    After the gas treatment device 7, the partial flow 5b has a second laminar flame velocity V2, wherein the second laminar flame velocity V2 is greater than the first laminar flame velocity V1 of the leakage stream 5b upstream of the gas treatment device 7. Preferably, the second laminar flame velocity V2 after the gas treatment device 7 is a value greater than 10 cm / s, preferably greater than 30 cm / s, at a combustion air ratio of 1.
    FIG. 2 shows a stationary power plant 1 according to FIG. 1, wherein the distribution device 6 is preceded by a gas preparation device 8, by means of which an inert gas 10, for example carbon dioxide, is separated from the gas flow 5. For this purpose, the gas preparation device 8 comprises a membrane 11, through which the gas stream 5 is carried out, wherein the inert gas 10 is obtained as retentate and is released, for example, to the atmosphere. Instead of the membrane 11, the gas preparation device 8 may also include other devices that allow separation of inert gas constituents of the gas stream 5, such as an amine scrubber. By separating the inert gas 10 from the gas stream 5, the gas stream 5 after the gas preparation device 8 has a laminar mainstream flame velocity VF on, which is greater than the first laminar flame velocity V1 before the gas preparation device 8. This type of gas preparation is particularly important if the flammability of the gas stream 5 is so low that an ignition in the main combustion chamber 4 of the gas engine 2 would not be possible.
    FIG. 3 shows a schematic representation of a stationary power plant 1, which comprises a gas preparation device 8. In this case, an inert gas 10, for example carbon dioxide or nitrogen, is supplied to the gas stream 5 in the gas preparation device 8 in order to reduce the laminar flame velocity of the gas stream 5 to a laminar main flame velocity VF. This kind of 8 8 · · Ψ%
    Gas preparation can be used when the flammability of the stationary power plant 1 supplied gas stream 5 increases during operation of the gas engine 2, so that the main combustion chamber 4 of the gas engine 2 by this reduction in flammability, a main flow 5a with a substantially constant flammability or substantially constant laminar main flame velocity VY is supplied.
    FIG. 4 shows a stationary power plant 1 according to FIG. 2, wherein in this example a subset 10 'of the inert gas 10 separated from the membrane 11 is fed back to the gas stream 5. A membrane 11 or an amine scrubber of a gas preparation device 8 are often set to the worst expected gas quality in terms of flammability of the gas stream 5. If now should increase the flammability of the continuously supplied gas stream 5, it can be done by supplying a partial amount 10 'of the initially deposited inert gas 10 to the gas stream 5, the setting of the flammability of the gas stream 5 to a desired laminar Hauptstromflammengeschwindigkeit V /.
    FIG. 5 shows a stationary power plant 1 according to FIG. 4, wherein in this example the gas stream 5 is fed, after passing through the gas preparation device 8 through a bypass, a partial quantity 14 of the gas stream 5 fed to the stationary power plant. By regulating or controlling the supplied subset 14, the flammability of the gas stream 5 can be adjusted to a desired laminar main stream flame speed Vi 'in the event of fluctuations in the gas quality. For very slow changes in the gas quality in terms of flammability of the gas stream 5 may also be provided to regulate or control the operation of the gas preparation device 8. In a gas preparation device 8 with an amine scrubber, for example, the fluid flow rate through the amine scrubber can be controlled or controlled accordingly. Moreover, in this example, the retentate 13, for example carbon dioxide, deposited in the membrane gas treatment device 7 designed as a membrane is fed to the main flow 5a. Since the retentate 13 is only relatively small amounts, it can easily be supplied to the main stream 5a instead of being discharged to the environment. 9 # ·
    FIG. 6 shows a stationary power plant 1 according to FIG. 4, wherein the gas preparation device 8 comprises a control device 9, by which the gas flow 5 can be regulated to a laminar main flow flame speed VV, wherein for controlling the laminar main flow flame speed V-t 'to a predefinable setpoint value V The amount of inert gas 10, preferably carbon dioxide, which can be introduced by the gas preparation device 8 from the gas flow 5 or supplied to the gas flow 5 can be regulated by the control device 9. The actual value of the main laminar flow speed Vi 'is determined periodically or continuously and sent to the control device 9 reported. The determination can be made, for example, by calculation programs or tables by which the main laminar flow velocity VY can be determined from a detected gas composition of the gas stream 5 or can be determined by experimental methods such as e.g. the Bunsen burner method. The message of the determined laminar main flow velocity Vi 'to the control device 9 is indicated by the dashed arrow 15. Depending on the deviation of the laminar main flow flame velocity V-Γ from the set value Vi ", the control of a controllable valve 12 (indicated by the dashed arrow 16), through which the gas flow 5 supplied amount 10 'of the separated from the membrane 11 inert gas 10 is controlled is, so that the laminar main flow flame speed Vi 'the setpoint V-Γ can be tracked.
    Innsbruck, 19 July 2011
    权利要求:
    Claims (24)
    [1]
    * * * * * 4 Φ * · · »··» * * * · · ·· * 4 * · * * · · · · «· ι * ···· 4« 44 4 · «1:: * ' 1 method for operating a stationary power plant (1) comprising a gas engine (2) having at least one pre-chamber (3) and at least one main combustion chamber (4), the stationary power plant (1) a - in particular essentially continuous gas stream (5) is supplied, which comprises a flame-retardant gas, characterized in that in the stationary power plant (1) the gas stream (5) is divided into a main stream (5a) and a partial stream (5b), wherein the main flow (5a) is supplied to the at least one main combustion chamber (4) and wherein the partial flow (5b) is treated to increase the flammability and the at least one prechamber (3) of the gas engine (2) is supplied.
    [2]
    2. The method according to claim 1, characterized in that the stationary power plant (1), a gas stream (5) is supplied having a first laminar flame velocity (Vi), which is less than or equal to 15 cm / s, preferably less than 12 cm / s , more preferably less than 10 cm / s, at a combustion air ratio of 1.
    [3]
    3. The method according to claim 1 or 2, characterized in that the gas stream (5) before the division into the main stream (5a) and in the partial stream (5b) is treated in a gas preparation, wherein the gas preparation, an inert gas, preferably carbon dioxide , is separated from the gas stream (5) or is supplied to the gas stream (5).
    [4]
    4. The method according to claim 3, characterized in that the gas stream (5) an inert gas, preferably carbon dioxide, is supplied by the gas preparation, if the first laminar flame velocity (V-ι) is greater than 10 cm / s.
    [5]
    5. The method according to claim 3, characterized in that by the gas preparation of the gas stream (5), an inert gas, preferably • * fr • 2 * * * t * ** carbon dioxide, is deposited, if the first laminar flame velocity (Vi) is less than 10 cm / s.
    [6]
    6. The method according to any one of claims 3 to 5, characterized in that the stationary power plant (1) supplied gas stream (5) is set or regulated by the gas preparation to a laminar Hauptstromflammengeschwindigkeit (V-ι ').
    [7]
    7. The method according to claim 6, characterized in that by the gas preparation, the laminar Hauptstromflammengeschwindigkeit (VT) to a value of 10 cm / s to 15 cm / s, preferably from 10 cm / s to 12 cm / s, at a combustion air ratio of 1 is set or regulated.
    [8]
    8. The method according to claim 6 or 7, characterized in that in a deviation of the laminar main flow flame speed (VT) from a target value (VT ') by the gas preparation, an inert gas, preferably carbon dioxide, from the gas stream (5) is deposited or the gas stream ( 5), so that the laminar mainstream flame speed (VT) is tracked to the desired value (VD).
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that from the gas stream (5) a maximum of 5%, preferably at most 2%, as a partial stream (5b) is branched off.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that by the gas treatment of the partial flow (5b), the laminar flame speed of the partial flow (5b) is increased to a second laminar flame speed (V2), which is greater than the laminar flame speed ( V1, VT) before gas treatment.
    [11]
    11. The method according to claim 10, characterized in that by the gas treatment of the partial flow (5b), the second laminar flame speed (V2) of the partial flow to a value greater than 10 cm / s, • · * f · ♦ ·· · · · · T t 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 30 2 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30.
    [12]
    12. The method according to any one of claims 1 to 11, characterized in that for the gas treatment of the partial flow (5b), a reforming device is used, wherein of the reforming device of the partial stream (5b) is enriched with hydrogen.
    [13]
    13. The method according to any one of claims 1 to 12, characterized in that for the gas treatment of the partial flow (5b), a separating device is used, wherein the separator, an inert gas, preferably carbon dioxide, from the partial stream (5b) is deposited.
    [14]
    14. The method according to any one of claims 1 to 13, characterized in that for the gas treatment of the partial flow (5b) a water electrolysis device is used, wherein of the Wasserelektrolyseeinrichtung the partial stream (5b) is enriched with hydrogen.
    [15]
    15. The method according to claim 14, characterized in that the gas engine (2) is connected to a generator, wherein the generator emits electrical energy, wherein a portion of the discharged electrical energy of the water electrolysis device is supplied.
    [16]
    16. Stationary power plant (1) with a gas engine (2) which has at least one pre-chamber (3) and at least one main combustion chamber (4), wherein the stationary power plant (1) - in particular substantially continuous - gas flow (5) can be fed , comprising a flame-retardant gas, characterized in that the stationary power plant (1) comprises a distributor device (6) through which the gas stream (5) into a main stream (5a) and a partial stream (5b) is divisible, wherein the main stream (5a) the at least one main combustion chamber (4) can be supplied and the partial flow (5b) at least one gas treatment device (7) can be supplied, wherein the at least one gas treatment device (7), the flammability of the • · 4 partial flow (5b) can be increased the at least one gas processing device (7) prepared partial stream (5b) of the at least one antechamber (3) of the gas engine (2) can be supplied.
    [17]
    17. Stationary power plant according to claim 16, characterized in that the distribution device (6) is preceded by a gas preparation device (8) through which an inert gas (10), preferably carbon dioxide, from the gas stream (5) can be deposited or the gas stream (5). can be fed.
    [18]
    18. Stationary power plant according to claim 17, characterized in that the gas preparation device (8) comprises a membrane (11) or an amine scrubber.
    [19]
    19. Stationary power plant according to claim 17 or 18, characterized in that the gas preparation device (8) comprises a control device (9) through which the gas flow (5) to a laminar Hauptstromflammengeschwindigkeit (Vi ') is controllable, wherein for controlling the laminar Hauptstromflammengeschwindigkeit (W) to a predetermined desired value (Vr) by the gas preparation device (8) from the gas stream (5) abscheid bare or the gas stream (5) deliverable amount (10 ') of inert gas (10), preferably carbon dioxide, via the control device ( 9) is adjustable.
    [20]
    20. Stationary power plant according to one of claims 16 to 19, characterized in that the treated partial flow (5b) after the at least one gas treatment device (7) aulile a second laminar flame speed (V2), wherein the second laminar flame speed (V2) is greater than the laminar flame speed (V1, W) of the partial flow (5b) before the gas treatment device (7).
    [21]
    21. Stationary power plant according to one of claims 16 to 20, characterized in that the at least one gas treatment device (7) is designed as a reformer, wherein by the reforming device, the partial flow (5b) can be enriched with hydrogen.
    [22]
    22. Stationary power plant according to one of claims 16 to 21, characterized in that the at least one gas treatment device (7) is designed as a separation device, wherein an inert gas, preferably carbon dioxide, from the partial stream (5b) is deposited by the separation device.
    [23]
    23. Stationary power plant according to one of claims 16 to 22, characterized in that the at least one gas treatment device (7) is designed as a water electrolysis device, wherein by the Wasserelektrolyseeinrichtung the partial stream (5b) is enriched with hydrogen.
    [24]
    24. Stationary power plant according to claim 23, characterized in that the gas engine (2) is connected to a generator, wherein the generator emits electrical energy, wherein a portion of the emitted electrical energy of the water electrolysis device can be fed. Innsbruck, 19 July 2011
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    法律状态:
    2021-03-15| MM01| Lapse because of not paying annual fees|Effective date: 20200720 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1065/2011A|AT511734B1|2011-07-20|2011-07-20|METHOD FOR OPERATING A STATIONARY POWER PLANT|ATA1065/2011A| AT511734B1|2011-07-20|2011-07-20|METHOD FOR OPERATING A STATIONARY POWER PLANT|
    PCT/AT2012/000188| WO2013010195A1|2011-07-20|2012-07-13|Method for operating a stationary power generating plant|
    DE112012003006.0T| DE112012003006B4|2011-07-20|2012-07-13|Method for operating a stationary power plant and stationary power plant operated by the method|
    CN201280035720.0A| CN103717853B|2011-07-20|2012-07-13|Method for running fixed power station|
    US14/147,850| US8936005B2|2011-07-20|2014-01-06|Method for operating a stationary power generating plant|
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