Control of a reforming furnace
    31.
    发明授权
    Control of a reforming furnace 失效
    重整炉的控制

    公开(公告)号:US4473490A

    公开(公告)日:1984-09-25

    申请号:US480201

    申请日:1983-03-30

    CPC classification number: C01B3/38 Y10S48/10

    Abstract: A reforming furnace having a radiant section containing cracking tubes, a convection section and a stack is controlled so as to maintain a desired synthesis gas temperature unless such maintenance would result in the violation of a process constraint. The desired excess oxygen concentration in the combustion gases withdrawn from the radiant section is also maintained while maintaining the desired synthesis gas temperature. As for the convection section, the temperature of a fluid stream passing through the convection section is maintained while still maintaining a desired excess oxygen concentration in the stack gas.

    Abstract translation: 控制具有包含裂解管,对流部分和堆叠的辐射部分的重整炉,以保持所需的合成气体温度,除非这种维护将导致违反过程约束。 在保持所需的合成气体温度的同时,保持从辐射部分排出的燃烧气体中所需的过量氧浓度。 对于对流部分,通过对流部分的流体流的温度被保持,同时仍保持堆叠气体中期望的过量氧浓度。

    Partial oxidation process
    32.
    发明授权
    Partial oxidation process 失效
    部分氧化工艺

    公开(公告)号:US4351647A

    公开(公告)日:1982-09-28

    申请号:US272418

    申请日:1981-06-10

    Abstract: Disclosed is a partial oxidation process for producing synthesis gas, fuel gas or reducing gas from slurries of solid carbonaceous fuel and/or liquid or gaseous hydrocarbon fuel. The burner has a high turndown feature and comprises a central conduit; a central bunch of parallel tubes that extend longitudinally through said central conduit; an outer conduit coaxial with said central conduit and forming an annular passage therewith; and an annular bunch of parallel tubes that extend longitudinally through said annular passage; and wherein the downstream ends of said central and annular bunches of parallel tubes are respectively retracted upstream from the burner face a distance of about 0 to 12 i.e. 3 to 10 times the minimum diameter of the central exit orifice and the minimum width of the annular exit orifice. Three ranges of flow through the burner may be obtained by using one or both bunches of tubes and their surrounding conduits. Throughput levels may be rapidly changed - up and down - without sacrificing stable operation. Additional mixing of the reactant streams is obtained in one embodiment by providing one or more coaxial cylindrical shaped pre-mix chambers in series in the central conduit and/or one or more annular shaped pre-mix chambers in series in the annular passage.

    Abstract translation: 公开了用于由固体碳质燃料和/或液体或气态烃燃料的浆料生产合成气,燃料气体或还原气体的部分氧化方法。 燃烧器具有高的调节特征并且包括中心导管; 一束中心的平行管,其纵向延伸穿过所述中心导管; 与所述中心导管同轴并与其形成环形通道的外导管; 以及沿所述环形通道纵向延伸的环形束平行管; 并且其中所述平行管的所述中心和环形束的下游端分别从燃烧器面的上游缩回约0至12的距离,即中心出口孔的最小直径的3至10倍,并且环形出口的最小宽度 孔。 可以通过使用一束或两束管及其周围的导管获得通过燃烧器的三个流量范围。 吞吐量水平可能会快速上升和下降,而不会影响稳定运行。 在一个实施方案中,通过在中心管道中串联提供一个或多个同轴圆柱形的预混合室和/或在环形通道中串联的一个或多个环形预混合室来获得反应物流的额外混合。

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