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    • 78. 发明授权
    • Methods of adjusting the Wobbe Index of a fuel and compositions thereof
    • 调节燃料的沃泊指数的方法及其组成
    • US06896707B2
    • 2005-05-24
    • US10189147
    • 2002-07-02
    • Dennis J. O'RearAndré Peter SteynbergRoger Van Gelder
    • Dennis J. O'RearAndré Peter SteynbergRoger Van Gelder
    • F23K5/00C10G2/00C10L3/00C10L3/06C10L3/12F23C1/00
    • C10L3/12C10L3/00C10L3/06F23C1/00
    • Novel methods of providing fuels to a gas-to-liquids facility are disclosed. A gas-to-liquids facility typically operates in a remote location and therefore must supply its own energy needs. These facilities are often sustained by fuels having different heating values, and for smooth operation while transitioning from one fuel to another, (such as during startup, shut down, and emergencies) the Wobble Indices of the two fuels cannot greatly vary from one another. According to embodiments of the present invention, the Wobble Index of either or both of the fuels is adjusted such that their ratio is less than or equal to about 3. The fuel having the higher Wobble Index may be natural gas, and materials such as nitrogen, carbon dioxide and flue gas may be added to lower its Wobble Index. The fuel having the lower Wobble Index may be the tail gas of a Fischer-Tropsch synthesis, and materials such as methane, ethane, LPG, or natural gas may be added to raise its Wobble Index. Alternatively, carbon dioxide may be removed from the tail gas to raise its Wobble Index.
    • 公开了向气体到液体设备提供燃料的新方法。 气体到液体设施通常在偏远地区运行,因此必须提供自己的能源需求。 这些设备通常由具有不同热值的燃料维持,并且在从一种燃料转换到另一种燃料(例如在启动,关闭和紧急情况下)的平稳运行期间,两种燃料的摆动指数不能相差很大。 根据本发明的实施方案,调节任一种或两种燃料的摆动指数,使其比例小于或等于约3.具有较高摆动指数的燃料可以是天然气,诸如氮气的材料 可以添加二氧化碳和烟道气以降低其摆动指数。 具有较低摆动指数的燃料可以是费 - 托合成的尾气,并且可以加入诸如甲烷,乙烷,LPG或天然气的材料以提高其摆动指数。 或者,可以从尾气中除去二氧化碳以提高其摆动指数。