Alumina forming bimetallic tube for refinery process furnaces and method of making and using
    34.
    发明授权
    Alumina forming bimetallic tube for refinery process furnaces and method of making and using 有权
    用于炼油工艺炉的氧化铝形成双金属管及其制造和使用方法

    公开(公告)号:US08877342B2

    公开(公告)日:2014-11-04

    申请号:US13446376

    申请日:2012-04-13

    摘要: Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from stainless steels including chromium in the range of 15.0 to 26.0 wt. % based on the total weight of the stainless steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt. % of Al, 20.0 wt. % to 25.0 wt. % Cr, less than 0.4 wt. % Si, and at least 35.0 wt. % Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof.

    摘要翻译: 本发明提供一种用于在精炼加工炉中更加特别是在炉内辐射线圈中输送烃原料的双金属管,包括:i)由不锈钢形成的外管层,该不锈钢包括15.0至26.0wt。 基于不锈钢总重量%; ii)内管层,其由包含5.0至10.0重量%的氧化铝形成块状合金形成。 %的Al,20.0wt。 %至25.0wt。 %Cr,小于0.4wt。 %Si,和至少35.0wt。 %Fe,余量为Ni,其中内管层形成等离子体粉末,将氧化铝形成体合金焊接在外管层的内表面上; 以及iii)形成在所述内管层的表面上的氧化物层,其中所述氧化物层基本上由氧化铝,氧化铬,二氧化硅,莫来石,尖晶石或其混合物组成。

    Alumina Forming Bimetallic Tube for Refinery Process Furnaces and Method of Making and Using
    35.
    发明申请
    Alumina Forming Bimetallic Tube for Refinery Process Furnaces and Method of Making and Using 有权
    用于精炼厂工艺炉的氧化铝成型双金属管及其制造和使用方法

    公开(公告)号:US20120211400A1

    公开(公告)日:2012-08-23

    申请号:US13446376

    申请日:2012-04-13

    IPC分类号: C10G75/02 C10G75/04

    摘要: Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from stainless steels including chromium in the range of 15.0 to 26.0 wt. % based on the total weight of the stainless steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt. % of Al, 20.0 wt. % to 25.0 wt. % Cr, less than 0.4 wt. % Si, and at least 35.0 wt. % Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof.

    摘要翻译: 本发明提供一种用于在精炼加工炉中更加特别是在炉内辐射线圈中输送烃原料的双金属管,包括:i)由不锈钢形成的外管层,该不锈钢包括15.0至26.0wt。 基于不锈钢总重量%; ii)内管层,其由包含5.0至10.0重量%的氧化铝形成块状合金形成。 %的Al,20.0wt。 %至25.0wt。 %Cr,小于0.4wt。 %Si,和至少35.0wt。 %Fe,余量为Ni,其中内管层形成等离子体粉末,将氧化铝形成体合金焊接在外管层的内表面上; 以及iii)形成在所述内管层的表面上的氧化物层,其中所述氧化物层基本上由氧化铝,氧化铬,二氧化硅,莫来石,尖晶石或其混合物组成。

    Bimodal and multimodal dense boride cermets with superior erosion performance
    37.
    发明授权
    Bimodal and multimodal dense boride cermets with superior erosion performance 失效
    具有优良侵蚀性能的双峰和多峰密集硼化物金属陶瓷

    公开(公告)号:US07731776B2

    公开(公告)日:2010-06-08

    申请号:US11293728

    申请日:2005-12-02

    IPC分类号: C22C29/14 B22F3/16

    摘要: Multimodal cermet compositions comprising a multimodal grit distribution of the ceramic phase and method of making are provided by the present invention. The multimodal cermet compositions include a) a ceramic phase and b) a metal binder phase, wherein the ceramic phase is a metal boride with a multimodal distribution of particles, wherein at least one metal is selected from the group consisting of Group IV, Group V, Group VI elements of the Long Form of The Periodic Table of Elements and mixtures thereof, and wherein the metal binder phase comprises at least one first element selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, and at least second element selected from the group consisting of Cr, Al, Si and Y, and Ti. The method of making multimodal boride cermets includes the steps of mixing multimodal ceramic phase particles and metal phase particles, milling the ceramic and metal phase particles, uniaxially and optionally isostatically pressing the particles, liquid phase sintering of the compressed mixture at elevated temperatures, and finally cooling the multimodal cermet composition. Advantages disclosed by the multimodal cermets are high packing density of the ceramic phase, high fracture toughness and improved erosion resistance at high temperatures up to 1000° C. The disclosed multimodal cermets are suitable in high temperature erosion/corrosion applications in various chemical and petroleum environments.

    摘要翻译: 包含陶瓷相的多峰砂粒分布的多模金属陶瓷组合物及其制造方法由本发明提供。 多峰金属陶瓷组合物包括a)陶瓷相和b)金属粘结相,其中所述陶瓷相是具有多峰颗粒分布的金属硼化物,其中至少一种金属选自第IV族,第V族 元素周期表的Long形式的VI族元素及其混合物,其中金属粘合剂相包含至少一种选自Fe,Ni,Co,Mn及其混合物的第一元素,至少 选自Cr,Al,Si和Y的第二元素和Ti。 制备多峰硼化物金属陶瓷的方法包括以下步骤:将多峰陶瓷相颗粒和金属相颗粒混合,研磨陶瓷和金属相颗粒,单轴和任选地等压挤压颗粒,在高温下液相烧结压缩混合物,最后 冷却多峰金属陶瓷组合物。 多峰金属陶瓷的优点是陶瓷相的高填充密度,高断裂韧性和在高达1000℃的高温下的耐腐蚀性得到改善。所公开的多峰金属陶瓷适用于各种化学和石油环境中的高温侵蚀/腐蚀应用 。

    High performance alloys with improved metal dusting corrosion resistance
    38.
    发明申请
    High performance alloys with improved metal dusting corrosion resistance 审中-公开
    具有改善金属除尘耐腐蚀性能的高性能合金

    公开(公告)号:US20080199349A1

    公开(公告)日:2008-08-21

    申请号:US12069289

    申请日:2008-02-08

    IPC分类号: C22C30/00

    摘要: Alloy compositions which are resistant to metal dusting corrosion are provided by the present invention. Also provided are methods for preventing metal dusting on metal surfaces exposed to carbon supersaturated environments. The alloy compositions include an alloy (PQR), and a multi-layer oxide film on the surface of the alloy (PQR). The alloy (PQR) includes a metal (P) selected from the group consisting of Fe, Ni, Co, and mixtures thereof, an alloying metal (Q) comprising Cr, Mn, and either Al, Si, or Al/Si, and an alloying element (R). When the alloying metal (Q) includes Al, the multi-layer oxide film on the surface of the alloy includes at least three oxide layers. When the alloying metal (Q) includes Si, the multi-layer oxide film on the surface of the alloy (PQR) includes at least four oxide layers. When the alloying metal (Q) includes Al and Si, the multi-layer oxide film on the surface of the alloy (PQR) includes at least three oxide layers. The multi-layer oxide film is formed in situ during use of the alloy composition in a carbon supersaturated metal dusting environment. Advantages exhibited by the disclosed alloy compositions include improved metal dusting corrosion resistance at high temperatures in carbon-supersaturated environments having relatively low oxygen partial pressures. The disclosed alloy compositions are suitable for use as the inner surfaces in reactor systems and refinery apparatus.

    摘要翻译: 耐金属粉尘腐蚀的合金组合物由本发明提供。 还提供了防止金属表面暴露于碳过饱和环境的金属粉尘的方法。 合金组合物包括合金(PQR)和合金表面上的多层氧化膜(PQR)。 合金(PQR)包括选自Fe,Ni,Co及其混合物的金属(P),包含Cr,Mn以及Al,Si或Al / Si的合金金属(Q),以及 合金元素(R)。 当合金金属(Q)包括Al时,合金表面上的多层氧化物膜包括至少三个氧化物层。 当合金金属(Q)包含Si时,合金表面上的多层氧化物膜(PQR)包括至少四个氧化物层。 当合金金属(Q)包括Al和Si时,合金表面上的多层氧化物膜(PQR)包括至少三个氧化物层。 在碳过饱和金属粉尘环境中的合金组合物的使用期间,多层氧化物膜原位形成。 所公开的合金组合物显示的优点包括在具有相对低的氧分压的碳过饱和环境中的高温下改善的金属粉尘耐腐蚀性。 所公开的合金组合物适用于反应器系统和炼油设备中的内表面。