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    METHOD FOR INTEGRATING BLAST FURNACE AND DIRECT REDUCTION ACTING VESSEL USING EXTRA-LOW TEMPERATURE RECTIFYING METHOD
    1.
    发明专利
    METHOD FOR INTEGRATING BLAST FURNACE AND DIRECT REDUCTION ACTING VESSEL USING EXTRA-LOW TEMPERATURE RECTIFYING METHOD 失效

    公开(公告)号：JP2000129327A

    公开(公告)日：2000-05-09

    申请号：JP30373899

    申请日：1999-10-26

    Applicant: PRAXAIR TECHNOLOGY INC

    Inventor： SHAH MINISH MAHENDRA ,  DRNEVICH RAYMOND FRANCIS

    IPC: C01B3/48 ,  C01B3/56 ,  C21B5/00 ,  C21B5/06 ,  C21B7/00 ,  C21B11/00 ,  C21B13/00 ,  C21B13/14 ,  C21B15/00 ,  C22B5/12 ,  F25J3/02 ,  F25J3/04 ,  F25J3/06

    Abstract: PROBLEM TO BE SOLVED: To make iron effectively utilizing waste gas in a blast furnace by mixing oxygen which is obtd. by fractioning the air at extra-low temp., and the air to produce a specific composition of the air for blast furnace, fractioning strengthened blast furnace gas that CO in the blast furnace gas obtd. by burning together with hydrocarbon fuel is removed as CO2 by steam, at the extra-low temp. and directly reduction- acting the obtd. hydrogen with iron ore. SOLUTION: The oxygen separated from the air with the extra-low temp. fraction is mixed with the air to produce the air for blast furnace composed of mainly nitrogen and oxygen having 22-50 mol.% mixed with the air. The supplied air 1 is introduced into an extra-low temp. air separating plant 101 to produce the oxygen 6. The oxygen 6 is mixed with the air from the flowing 7 to produce the air 8 for blast furnace. The high temp. air 10 for blast furnace heated with a hot stove 103, together with the hydrocarbon fuel of coal, oil, natural gas, etc. are introduced into the blast furnace 104, and then the oxygen in the air 10 for blast furnace is reacted with the hydrocarbon fuel to produce reduction gas, and the iron ore is changed into the iron during raising in the furnace.

    CARBON DIOXIDE PURIFICATION METHOD
    4.
    发明申请
    CARBON DIOXIDE PURIFICATION METHOD 审中-公开
    二氧化碳净化方法

    公开(公告)号：WO2007126972A3

    公开(公告)日：2008-01-17

    申请号：PCT/US2007007790

    申请日：2007-03-28

    Applicant: PRAXAIR TECHNOLOGY INC ,  SHAH MINISH MAHENDRA ,  HOWARD HENRY EDWARD

    Inventor： SHAH MINISH MAHENDRA ,  HOWARD HENRY EDWARD

    IPC: F25J3/02 ,  C01B32/50

    CPC classification number: F25J3/0266 ,  C01B32/50 ,  F25J3/0209 ,  F25J3/0223 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2205/66 ,  F25J2210/04 ,  F25J2210/70 ,  F25J2220/82 ,  F25J2230/30 ,  F25J2230/32 ,  F25J2230/80 ,  F25J2240/90 ,  F25J2245/02 ,  F25J2270/02 ,  Y02C10/12 ,  Y02P20/152

    Abstract: Method of purifying a feed stream containing carbon dioxide (10) wherein the feed stream after having been compressed (12) and dried (20) is partly cooled (24) and then used to reboil (26) a stripping column (28). Thereafter, the feed stream is further cooled (24) and expanded (30) to a lower operational temperature of the stripping column. A carbon dioxide product stream (44) composed of the liquid column bottoms of the stripping column is expanded (46) at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger (24) and compressed by a compressor (48) to produce a compressed carbon dioxide product (50). Refrigeration is recovered in the main heat exchanger (24) from a column overhead stream (31) extracted from the stripping column (28) within the main heat exchanger (24) either directly or indirectly by auxiliary processing in which carbon dioxide (38) is further separated (34) and optionally recycled back (42) to the main compressor (12) used in compressing the feed stream (10).

    Abstract translation: 纯化含有二氧化碳（10）的进料流的方法，其中在压缩（12）和干燥（20）之后的进料流部分冷却（24），然后用于再沸（26）汽提塔（28）。 此后，将进料流进一步冷却（24）并膨胀（30）至汽提塔的较低操作温度。 由汽提塔的液柱底部组成的二氧化碳产物流（44）在一个或多个压力下膨胀（46）以产生制冷，然后在主热交换器（24）内完全蒸发并由压缩机（48）压缩 ）以产生压缩的二氧化碳产物（50）。 在主热交换器（24）中，从主热交换器（24）内从汽提塔（28）提取的塔顶塔（31）直接或间接地通过二氧化碳（38）为 进一步分离（34）并任选地再循环回（42）到用于压缩进料流（10）的主压缩机（12）。

    CATALYTIC REACTOR
    5.
    发明申请
    CATALYTIC REACTOR 审中-公开
    催化反应器

    公开(公告)号：WO2007001350A3

    公开(公告)日：2007-11-08

    申请号：PCT/US2005030559

    申请日：2005-08-30

    Applicant: PRAXAIR TECHNOLOGY INC ,  AARON TIMOTHY MARK ,  SHAH MINISH MAHENDRA ,  JIBB RICHARD JOHN

    Inventor： AARON TIMOTHY MARK ,  SHAH MINISH MAHENDRA ,  JIBB RICHARD JOHN

    IPC: B01J8/04 ,  B01J10/00

    CPC classification number: B01J8/067 ,  B01J8/0496 ,  B01J19/243 ,  B01J2208/00203 ,  B01J2208/00309 ,  B01J2208/00495 ,  B01J2208/0053 ,  C01B3/384 ,  C01B3/48 ,  C01B2203/0233 ,  C01B2203/0283 ,  C01B2203/0811 ,  C01B2203/1058 ,  C01B2203/1241 ,  C01B2203/127 ,  F28D7/0066 ,  F28D7/0083 ,  F28D7/024 ,  F28D7/14 ,  Y02P20/52

    Abstract: A catalytic reactor (1) is provided with one or more reaction zones each formed of set(s) of reaction tubes (26, 34) containing a catalyst (27, 35) to promote chemical reaction within a feed stream. The reaction tubes (26, 34) are of helical configuration and are arranged in a substantially coaxial relationship to form a coil-like structure. Heat exchangers and steam generators can be formed by similar tube arrangements. In such manner, the reaction zone(s) and hence, the reactor (1) is compact and the pressure drop through components is minimized. The resultant compact form has improved heat transfer characteristics and is far easier to thermally insulate than prior art compact reactor designs. Various chemical reactions are contemplated within such coil­like structures such that as steam methane reforming followed by water-gas shift. The coil-like structures can be housed within annular chambers (90, 92, 24) of a cylindrical housing (2) that also provide flow paths for various heat exchange fluids to heat and cool components.

    Abstract translation: 催化反应器（1）设置有一个或多个反应区，每个反应区由包含催化剂（27,35）的一组反应管（26,34）形成，以促进进料流内的化学反应。 反应管（26,34）是螺旋形的并且以基本同轴的关系布置以形成线圈状结构。 热交换器和蒸汽发生器可以通过类似的管装置形成。 以这种方式，反应区，因此，反应器（1）是紧凑的，并且通过部件的压降最小化。 所得到的紧凑形式具有改进的传热特性，并且比现有技术的紧凑型反应器设计更容易热绝缘。 在这样的coillike结构中考虑到各种化学反应，使得随着蒸汽甲烷重整然后水煤气变换。 线圈状结构可以容纳在圆柱形壳体（2）的环形室（90,92,24）内，其也为各种热交换流体提供用于加热和冷却部件的流动路径。

    METHOD OF RECOVERING CARBON DIOXIDE
    8.
    发明申请
    METHOD OF RECOVERING CARBON DIOXIDE 审中-公开
    回收二氧化碳的方法

    公开(公告)号：WO2007103467A3

    公开(公告)日：2007-10-18

    申请号：PCT/US2007005878

    申请日：2007-03-07

    Applicant: PRAXAIR TECHNOLOGY INC ,  SHAH MINISH MAHENDRA ,  DRNEVICH RAYMOND FRANCIS ,  JAMAL AQIL

    Inventor： SHAH MINISH MAHENDRA ,  DRNEVICH RAYMOND FRANCIS ,  JAMAL AQIL

    IPC: C01B32/50

    CPC classification number: C01B32/50 ,  Y02C10/06

    Abstract: A method of recovering carbon dioxide from a synthesis gas stream generated within a facility (1) having a synthesis gas reactor (10). After the synthesis gas stream (12) is passed through at least one process heat exchanger (56) of a steam generation system located downstream of a water-gas shift reactor (14), the temperature of the synthesis gas stream (18) is increased while simultaneously adding steam (64) to the synthesis gas stream (18). Thereafter, the synthesis gas stream is added to an absorption system (16) having an absorption zone (90) utilizing a solvent to absorb the carbon dioxide. Heat is transferred from the synthesis gas stream to a regeneration zone (82) of the absorption system (16) to promote disengagement of the carbon dioxide from the steam and such that between about 40 percent and about 90 percent of the carbon dioxide originally present in the synthesis gas stream is recovered (116).

    Abstract translation: 一种从具有合成气反应器（10）的设备（1）内产生的合成气流中回收二氧化碳的方法。 在合成气流（12）通过位于水煤气变换反应器（14）下游的蒸汽发生系统的至少一个工艺热交换器（56）之后，合成气流（18）的温度升高 同时向合成气流（18）中加入蒸汽（64）。 此后，将合成气流加入具有吸收区（90）的吸收系统（16）中，利用溶剂吸收二氧化碳。 热量从合成气流转移到吸收系统（16）的再生区（82），以促进二氧化碳与蒸汽的脱离接触，并使原来存在于二氧化碳中的二氧化碳的约40％至约90％ 回收合成气流（116）。

    PROCESS FOR SULFUR REMOVAL FROM REFINERY OFF GAS
    9.
    发明专利
    PROCESS FOR SULFUR REMOVAL FROM REFINERY OFF GAS 未知

    公开(公告)号：CA2774185A1

    公开(公告)日：2011-04-07

    申请号：CA2774185

    申请日：2010-08-23

    Applicant: PRAXAIR TECHNOLOGY INC

    Inventor： SHAH MINISH MAHENDRA ,  DRNEVICH RAYMOND FRANCIS ,  PAPAVASSILIOU VASILIS

    IPC: B01D53/48 ,  B01D53/86

    Abstract: Organic sulfur compounds contained in refinery off gas streams having either high ort low concentrations of olefins are converted to hydrogen sulfides which can be then be removed using conventional amine treating systems. The process uses a catalytic reactor with or without a hydrotreater depending on the olefin concentration of the off gas stream. The catalytic reactor operates in a hydrogenation mode or an oxidation mode to convert a majority of organic sulfur compounds into hydrogen sulfides.

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