• 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:
    Process for the partial oxidation of fuel using a multi-orifice burner comprising a central channel and three concentric channels encircling the central channel. Fuel is supplied through the first and third concentric channel and the oxidizer is supplied through the central channel and the second concentric channel. The supply occurs at specific mass flow distribution and velocities.
    公开号:SU1766282A3
    申请号:SU884355646
    申请日:1988-05-10
    公开日:1992-09-30
    发明作者:Йоханна Арнолдус Мартенс Франсискус
    申请人:Шелл Интернэшнл Рисерч Маатсхаппий Б.В. (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to incomplete oxidation of a hydrocarbon fuel using a multi-nozzle burner.
    In particular, the invention relates to incomplete oxidation of hydrocarbon fuels, in accordance with which oxygen-containing gas and hydrocarbon fuels are supplied to the gasification zone through a multi-nozzle burner, including a concentric device with a two-pass or two-channel oxygen supply and a two-pass or two-channel fuel feed, and under appropriate conditions autothermally get a gas stream containing synthesis gas.
    The oxygen-containing gas is usually air or oxygen, or
    oxygen-enriched air. To control the temperature within the gasification zone, a moderator is supplied to it.
    More specifically, the invention relates to a method in which gases such as natural gas, refinery gas, methane and the like are used as fuels.
    In such processes, it is necessary to ensure good and rapid mixing of the fuel and oxygen-containing gas in order to carry out the gasification process. Moreover, in such processes, the duration of equipment operation can be increased by reducing the convective and radiative heat fluxes through
    VI ON Yu 00 Yu

    WITH
    flame rise without deterioration of process characteristics.
    The aim of the invention is the implementation of incomplete oxidation of a hydrocarbon fuel in which fast and efficient mixing of the reactants is achieved outside the concentric device. The aim of the invention is also the implementation of incomplete oxidation of a hydrocarbon fuel, in which the energy of mixing oxygen and fuel is provided by the high flow rate of fuel. Another object of the invention is incomplete oxidation of hydrocarbon fuels, in which pressure losses are minimized and in which reactors of shorter lengths can be used, since the effective residence time in the reactor is maintained by reducing the effective burning rate and mixing length downstream of the burner. The aim of the invention is also an implementation of a method for incomplete oxidation of hydrocarbon fuels, in which highly exothermic reactions are prevented in the mixing zone relative to hot synthesis gas from the reactor with reagents from the third concentric channel.
    The proposed method of incomplete oxidation of hydrocarbon fuels is characterized in that oxygen-containing gas and hydrocarbon gas are supplied to the gasification zone through a multi-nozzle burner containing a concentric device from two oxygen passages or channels and two fuel passages or channels that are autothermally prepared at suitable conditions. the synthesis gas gas stream additionally supplies oxygen-containing gas through the central channel of the concentric device with a relatively low speed 5-45 m / s, hydrocarbon fuel is fed through the first concentric channel covering the central channel with a relatively high speed of 50-150 m / s, oxygen-containing gas is supplied through the second concentric channel covering the first channel with a relatively low speed of 5-45 m / s and serves hydrocarbon fuel and / or moderator through the third concentric channel surrounding the second channel, with a relatively low speed of 5-45 m / s.
    In a preferred embodiment of the invention, 30-45 wt.% Of oxygen-containing gas and 10-20 wt.% Of fuel are fed through said central channel through the third concentric channel.
    In another preferred embodiment of the invention, the respective velocities are measured at the outlet of said respective channels to the gasification zone. The speed measurement may be carried out in any suitable way and is not described in detail.
    In a further preferred embodiment of the invented shadow, the oxygen-containing gas and / or the fuel contains water vapor or carbon dioxide. In yet another embodiment of the invention, the gasification process is carried out at a pressure of 0.1-12 MPa. 5 In accordance with another preferred embodiment of the invention, the hydrocarbon fuel is a gas, such as methane, natural gas, or gas from refineries. 0 Fuel and oxygen-containing gas enters the gasification zone through a concentric device of two oxygen channels or passages and two fuel channels. A central channel for supplying oxygen (preferably mixed with a moderator) is surrounded by a first annular channel for supplying fuel. The first annular channel is surrounded by a second annular channel for supplying oxygen 0 (preferably mixed with a moderator), and the second channel is covered by a third annular channel for supplying fuel and / or moderator.
    Multi-burner burners based on devices from concentric annular channels for supplying oxygen and fuel to the gasification zone are not known, they are not discussed in detail.
    In accordance with the invention, oxygen and fuel are fed to the gasification zone through appropriate channels at certain low speeds and at a certain mass ratio, in order to minimize the pressure loss, to achieve a rapid and perfect mixing of the reactants, effective time. staying in the reactor and raising the flame.
    The invention is further described in more detail in the examples below. 0 Tests were performed under the following conditions:
    a) fuel Example 1 Example 2
    Mass
    consumption, kg / s3,1724,446
    5 Density, kg / m3 14,016.3
    Temperature, K 673672
    Composition,% by volume
    Carbon monoxide 7,374 0,336 carbon dioxide 15,57 3,798
    Methane68,5784.05
    Other hydrocarbons 1.702 7.832 Hydrogen6.474 3.286
    Nitrogen0,310 0,698
    b) an oxidizing agent. Example 1 Example 2 May. consumption
    oxygen, kg / s2,703 4,954
    Steam consumption, kg / s 0.3808 0.2207 Density, kg / m325.7 34.2
    Temperature, K519 534
    Composition,% by volume
    Water 20.03 7.334
    Nitrogen -0.12 0.4633
    Oxygen79.85 92,203
    c) product
    CO + H, Nm3 / day
    dry 600.103 1275.103
    d) burner geometry with face
    sides Example 1 Example 2
    Diameter of the central pipe, mm 55.28 64.00 Width of the slit
    1st channel, mm13.88 11.50
    2nd slit width
    channel, mm12.03 13.72
    3rd slit width
    channel, mm6,347,14
    The length of the macromixing zone of the reagents beyond the end of the burner, m 0.150
    e) distribution of mass and velocity flows, ratio, wt.% Center channel (oxidizer) 4040 First channel (fuel) 80 80 Second channel (oxidizer) 6060 Third channel (fuel) 2020 Speed at the nozzle exit Oxidizer from the first
    channel, m / s60 80
    Oxidant from the second
    channel, m / s2020
    Fuel from the third
    channel, m / s2020
    e) reactor
    Pressure, MPa3.8 4.9
    Temperature, K - 1675 1600
    g) typical composition of raw synthesis gas, b.% dry
    Carbon monoxide40.4 35.6
    Carbon dioxide5,22,0
    Hydrogen54.3 61.0
    Methane0,11,4
    Various modifications of the invention are apparent to those skilled in the art. Such modifications are included in the scope of the claims.
    权利要求:
    Claims (12)
    [1]
    1. A method of incomplete oxidation of hydrocarbon fuels, characterized in that, in order to increase efficiency, oxygen-containing gas and hydrocarbon fuels are supplied to the gasification zone through a multi-nozzle burner comprising a concentric device of two passages or channels
    0 oxygen and two passages or channels for fuel, and autothermally, under appropriate conditions, a gas stream containing synthesis gas is obtained, oxygen-containing gas is supplied
    5 through the central channel of a concentric device with a relatively low speed of 5-45 m / s; the supply of hydrocarbon fuel is carried out through the first concentric channel adjacent to
    0 to the central channel, with a relatively high speed of 50-150 m / s; oxygen-containing gas is supplied through a second concentric channel adjacent to the first channel at a relatively low speed of 5-45 m / s; and the supply of hydrocarbon fuel and / or moderator is carried out through the third concentric channel, adjacent to the second channel, with a relatively low speed
    0 5-45 m / s.
    [2]
    2. A method according to claim 1, characterized in that the respective velocities are measured at the outlet of the respective concentric channels to the gasification zone.
    [3]
    5 3. The method according to paragraphs. 1 or 2, that is, with the fact that the hydrocarbon fuel is a gas.
    [4]
    4. A method according to claim 3, characterized in that the gas is natural gas or oil and gas.
    [5]
    5. A method according to claim 3, characterized in that the gas is methane.
    [6]
    6. Method according to any one of paragraphs. 1-5, characterized in that the oxygen-containing
    5 gas and / or fuel is mixed with a moderator.
    [7]
    7. Method according to claim 6, characterized in that the moderator is steam or carbon dioxide.
    [8]
    0 8. The method according to any one of paragraphs. 1-7, characterized in that the process is carried out at a pressure of 0.1-12.0 MPa.
    [9]
    9. Method according to any one of paragraphs. 1-8, characterized in that through the central
    5 channel serves 30-45 wt.% Oxygen-containing gas.
    [10]
    10. Method according to any one of paragraphs. 1-9, differing in that 10-20 wt.% Of fuel is fed through the third concentric channel.
    [11]
    11. A method according to any one of claims. 1-10 is
    [12]
    12. Synthesis gas produced in accordance with the procedure described in the text with reference to any preceding paragraph, examples.
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    同族专利:
    公开号 | 公开日
    EP0291111B1|1992-03-18|
    CN1012057B|1991-03-20|
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    DD274043A5|1989-12-06|
    BR8802264A|1988-12-06|
    CZ315188A3|1997-03-12|
    AU1589188A|1988-11-17|
    GB8711156D0|1987-06-17|
    JPS63297201A|1988-12-05|
    NO882035D0|1988-05-10|
    PT87444A|1989-05-31|
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    CZ282208B6|1997-06-11|
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    CN88102649A|1988-11-30|
    ES2030153T3|1992-10-16|
    KR970002887B1|1997-03-12|
    AU601276B2|1990-09-06|
    NO174955C|1994-08-17|
    NO882035L|1988-11-14|
    PT87444B|1992-08-31|
    DE3869193D1|1992-04-23|
    MY104308A|1994-03-31|
    US4836831A|1989-06-06|
    NZ224564A|1989-09-27|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB878711156A|GB8711156D0|1987-05-12|1987-05-12|Partial oxidation of hydrocarbon-containing fuel|
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