Method and apparatus for controlling mass flow rate of recycled anode tail gas in solid oxide fuel cell system
    1.
    发明授权
    Method and apparatus for controlling mass flow rate of recycled anode tail gas in solid oxide fuel cell system 失效
    用于控制固体氧化物燃料电池系统中再循环阳极尾气质量流量的方法和装置

    公开(公告)号:US07562588B2

    公开(公告)日:2009-07-21

    申请号:US11412620

    申请日:2006-04-27

    IPC分类号: G01P5/06

    摘要: In an SOFC stack system, a reformer supplies reformate to the stack. An anode tail gas portion is recycled into the reformer. An inline flowmeter indicates an apparent recycle flow rate. A map of anode tail gas composition as a function of fuel utilization efficiency U, reformer oxygen/carbon ratio O:C, and recycle percentage R is generated on a laboratory test bed at various recycle rates and fuel utilization rates. Compositions are sent through a flowmeter and a Coriolus mass flowmeter provide a Coriolus flow and sensor voltage function across the various compositions and flow rates to create an average curve and an average (reference) voltage at a given flow. A scale factor Z is calculated and used to determine a scaled sensor voltage X for use in an average flow polynomial curve fit equation to calculate tail gas mass flow rate at any flow value indicated by the flow meter.

    摘要翻译: 在SOFC堆栈系统中,重整器为堆叠提供重组。 阳极尾气部分被再循环到重整器中。 在线流量计表示表观循环流量。 作为燃料利用效率U的函数的阳极尾气组成的图,重整器氧/碳比O:C,并且在实验室试验台上以各种再循环速率和燃料利用率产生再循环百分比R. 组合物通过流量计送出,Coriolus质量流量计在各种组成和流速之间提供Coriolus流量和传感器电压功能,以在给定流量下产生平均曲线和平均(参考)电压。 计算比例因子Z并用于确定在平均流量多项式曲线拟合方程中使用的缩放的传感器电压X,以在由流量计指示的任何流量值处计算尾气质量流量。

    Method of thermally-stabilizing an oxygen transport membrane-based reforming system

    公开(公告)号:US10118823B2

    公开(公告)日:2018-11-06

    申请号:US14969486

    申请日:2015-12-15

    IPC分类号: C01B3/38 C01B13/02

    摘要: A method of operating an oxygen transport membrane based reforming system employing one or more packs of thermally coupled panels of reformer tubes and oxygen transport membrane (“OTM”) reactors close to thermo-neutral point is provided. The method produces syngas by converting a hydrocarbon-containing feed, such as natural gas in the reformer tubes of a pack by endothermic steam reforming reactions. The heat required for endothermic reforming reactions is provided by exothermic oxidizing reactions occurring inside the OTM reactors of the pack. At a thermo-neutral point the heat released by exothermic reactions matches the heat required to support endothermic reactions and heat losses in the pack. The method modulates the flow rate of hydrocarbon-containing feed and/or steam-to-carbon ratio of the combined feed to the pack to maintain the surface temperature of oxygen transport membrane reactors below a target maximum temperature. The syngas product oxygen-to-carbon ratio is maintained within a desired target range such that the OTM based reforming system is operated close to thermo-neutral point.

    Solid oxide fuel cell stack assembly and method for fueling
    8.
    发明授权
    Solid oxide fuel cell stack assembly and method for fueling 有权
    固体氧化物燃料电池堆组件及其加油方法

    公开(公告)号:US07901820B2

    公开(公告)日:2011-03-08

    申请号:US12080589

    申请日:2008-04-04

    IPC分类号: H01M8/06

    摘要: A method for fueling a solid oxide fuel cell stack is provided. The method includes passing a first portion of hydrocarbon fuel through a catalytic hydrocarbon reformer to generate a first reformate. The first reformate is passed through a hydrocarbon cracker to generate a second reformate such that a portion of any non-reformed hydrocarbon fuel in the first reformate is converted to methane. The second reformate is supplied to the fuel cell stack.

    摘要翻译: 提供了一种用于燃料固体氧化物燃料电池堆的方法。 该方法包括使第一部分烃燃料通过催化烃重整器以产生第一重整产物。 第一重整产物通过烃裂化器以产生第二重整产物,使得第一重整产物中的任何未重整的烃燃料的一部分转化为甲烷。 将第二重整产物供应到燃料电池堆。

    Flexible, high-efficiency fuel reforming in a solid oxide fuel cell system
    10.
    发明申请
    Flexible, high-efficiency fuel reforming in a solid oxide fuel cell system 有权
    在固体氧化物燃料电池系统中灵活,高效的燃料重整

    公开(公告)号:US20080187799A1

    公开(公告)日:2008-08-07

    申请号:US12080589

    申请日:2008-04-04

    IPC分类号: H01M8/06

    摘要: An SOFC stack system including a reformer and fuel flow arrangement permitting optimized fuel reforming at all power load levels between 0% and 100%. A portion of the anode tail gas is combined with fresh air and fuel. The mixture is sent to a main reformer configured for endothermic reforming. Reformate is sent through a hydrocarbon cracker that breaks any hydrocarbons in the reformate into methane before the reformate enters the stack. At 100% load, there is no reforming in the main reformer; all of the fuel is internally reformed within the stack. At 0% load, all of the fuel is reformed in the main reformer. At loads between 0% and 100%, reforming is a mixture of endothermic reforming in the main reformer and internal reforming of methane within the stack. This strategy allows highest fuel processing efficiencies available through the full range of stack operation.

    摘要翻译: 包括重整器和燃料流布置的SOFC堆叠系​​统允许在0%和100%之间的所有功率负载水平下进行优化的燃料重整。 一部分阳极尾气与新鲜空气和燃料相结合。 将混合物送入配置用于吸热重整的主重整器。 重整物通过烃裂化装置发送,在重整产品进入堆料之前,将重整产物中的任何烃类破坏成甲烷。 在100%负载下,主改质器不进行改性; 所有的燃料都在内部进行改造。 在0%负荷下,所有的燃料都在主要的改性剂中进行了改造。 在0%至100%的负载下,重整是主重整器中的吸热重整和堆内甲烷的内部重整的混合物。 该策略允许通过全套堆栈操作提供最高的燃油处理效率。