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    Systems and methods for restricting scale in gas scrubbers and related components
    1.
    发明授权
    Systems and methods for restricting scale in gas scrubbers and related components 有权
    用于限制气体洗涤器和相关部件中的垢的系统和方法

    公开(公告)号：US07931737B2

    公开(公告)日：2011-04-26

    申请号：US12397248

    申请日：2009-03-03

    申请人： Neal Richard Dando

    发明人： Neal Richard Dando

    IPC分类号： B01D53/14 ,  C25C3/22

    CPC分类号： B01D53/685 ,  B01D2253/104 ,  B01D2257/2047

    摘要： Systems, methods and apparatus for restricting scale build-up in gas scrubbers and piping are disclosed. The scrubbers and/or pipes may have a coating disposed on internal surfaces thereof. The coating restricts formation of scale within the pipe, especially scale that would normally accumulate due to fluoride-enriched absorbents, such as fluoride-enriched alumina.

    摘要翻译： 公开了用于限制气体洗涤器和管道中的结垢的系统，方法和装置。 洗涤器和/或管道可以具有设置在其内表面上的涂层。 涂层限制了管内的垢的形成，特别是由于富含氟化物的吸收剂（如富含氟化物的氧化铝）而通常会积聚的垢。

    Measuring duct offgas temperatures to improve electrolytic cell energy efficiency
    4.
    发明授权
    Measuring duct offgas temperatures to improve electrolytic cell energy efficiency 失效
    测量管道废气温度，以提高电解池的能量效率

    公开(公告)号：US07731824B2

    公开(公告)日：2010-06-08

    申请号：US11383632

    申请日：2006-05-16

    申请人： Michael Lewis Slaugenhaupt ,  Neal Richard Dando ,  Gary Paul Tarcy

    发明人： Michael Lewis Slaugenhaupt ,  Neal Richard Dando ,  Gary Paul Tarcy

    IPC分类号： C25C3/06 ,  C25C3/14 ,  C25C3/20

    CPC分类号： C25C3/20

    摘要： Methods and systems for controlling operating conditions of electrolytic cells are provided, particularly aluminum electrolytic cells. The method may includes the steps of measuring offgas temperature from the electrolytic cell, comparing the measured offgas temperature to a target offgas temperature, and completing a predetermined action in response to the comparing step. The predetermined action may include one or more of changing a feed rate of feed materials supplied to the electrolytic cell or inspecting a crust of the electrolytic cell for an undesired condition, such as a crust hole. The system may include an electrolytic cell adapted to contain a molten metal mixture, a hopper adapted to provide feed material to the electrolytic cell, a hood adapted to contain offgas from the electrolytic cell, an exhaust duct interconnected to the hood and containing a thermocouple for measuring offgas temperature, and a control panel for receiving temperature measurements from the thermocouple.

    摘要翻译： 提供了用于控制电解槽的操作条件的方法和系统，特别是铝电解槽。 该方法可以包括以下步骤：测量来自电解池的废气温度，将测得的废气温度与目标废气温度进行比较，并响应于比较步骤完成预定的动作。 预定动作可以包括改变供给到电解槽的供给材料的供给速度或检查电解槽的外壳的一种或多种，​​用于不期望的状况，例如地壳孔。 该系统可以包括适于容纳熔融金属混合物的电解池，适于向电解池提供进料的料斗，适于容纳来自电解池的废气的罩，连接到罩的排气管，并且包含用于 测量废气温度，以及用于从热电偶接收温度测量值的控制面板。

    SYSTEMS AND METHODS FOR REMOVING GASEOUS POLLUTANTS FROM A GAS STREAM
    6.
    发明申请
    SYSTEMS AND METHODS FOR REMOVING GASEOUS POLLUTANTS FROM A GAS STREAM 有权
    从气流中去除气体污染物的系统和方法

    公开(公告)号：US20090092529A1

    公开(公告)日：2009-04-09

    申请号：US11868904

    申请日：2007-10-08

    申请人： Rajat Ghosh ,  Peter Bowen ,  Charles Dobbs ,  Roger Nichols ,  Neal Richard Dando ,  John R. Smith ,  Richard R. Lunt

    发明人： Rajat Ghosh ,  Peter Bowen ,  Charles Dobbs ,  Roger Nichols ,  Neal Richard Dando ,  John R. Smith ,  Richard R. Lunt

    IPC分类号： B01D53/56

    CPC分类号： B01D53/504 ,  B01D53/18 ,  B01D53/56 ,  B01D53/68 ,  B01D53/79 ,  B01D2251/304 ,  B01D2251/402 ,  B01D2251/404

    摘要： Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister. The gas stream may include sulfur dioxide, and the system may be capable of removing at least 71 vol. % sulfur dioxide from the gas stream.

    摘要翻译： 提供了水平气液洗涤系统和相关的气体洗涤方法。 在一个实施例中，水平管道洗涤系统包括水平设置的壳体，其具有废气入口和经处理的气体出口，设置在水平设置的壳体内的液体入口歧管，所述液体入口歧管包括多个喷嘴， 液体流过流经水平布置的壳体的气流的流动，以及位于经处理的气体出口附近的除雾器，其中水平设置的壳体在液体入口歧管和除雾器之间基本上没有流动偏转构件。 气流可以包括二氧化硫，并且该系统可以能够除去至少71体积％ 来自气流的二氧化硫百分比。

    Heat Exchanger
    7.
    发明申请
    Heat Exchanger 审中-公开
    热交换器

    公开(公告)号：US20080302520A1

    公开(公告)日：2008-12-11

    申请号：US12134809

    申请日：2008-06-06

    申请人： Rabindra Kumar Bhattacharyya ,  Neal Richard Dando ,  Patrick R. Atkins ,  Martin Gaudreault ,  Jeffrey M. Shoup ,  Eric F.M. Winter ,  Donald P. Ziegler

    发明人： Rabindra Kumar Bhattacharyya ,  Neal Richard Dando ,  Patrick R. Atkins ,  Martin Gaudreault ,  Jeffrey M. Shoup ,  Eric F.M. Winter ,  Donald P. Ziegler

    IPC分类号： F28F1/10

    CPC分类号： F28D7/0041 ,  C25C3/22 ,  F28D7/024 ,  F28F1/16 ,  F28F1/18 ,  F28F19/04

    摘要： A heat exchanger suitable for long term use in the unfiltered hot exhaust gas of an aluminum smelter is disclosed. In one embodiment, the heat exchanger comprises fluid carrying tubes connected together with web members to form a cylindrical shell. A header located at each end of the cylindrical shell is provided for feeding fluid to and from the tubes of the heat exchanger. Shrouds can be placed over the headers to affect hot gas turbulence and help minimize scaling. The surfaces of the cylindrical shell, when in un-scrubbed exhaust gas of an aluminum smelter, will be in contact with particles and/or dust and possibly caustic fumes and, therefore, may be treated with a relevant slip coating selected, for example, from the Teflon family.

    摘要翻译： 公开了一种适用于铝冶炼厂未过滤的热废气中长期使用的热交换器。 在一个实施例中，热交换器包括与腹板构件连接在一起的流体输送管，以形成圆柱形壳体。 设置在圆柱形壳体的每个端部处的头部用于将流体供给到热交换器的管道和从该热交换器的管子输送流体。 护罩可以放置在头部上以影响热气体湍流，并帮助最小化结垢。 当铝冶炼厂的未经洗涤的排气中的圆柱形壳体的表面将与颗粒和/或灰尘以及可能的苛性烟雾接触时，因此可以用选择的相关滑动涂料进行处理，例如， 来自特氟隆家族。

    Method For Improving the HF Capture Efficiency of Dry Scrubbers
    8.
    发明申请
    Method For Improving the HF Capture Efficiency of Dry Scrubbers 审中-公开
    提高干式洗涤器HF吸收效率的方法

    公开(公告)号：US20080050298A1

    公开(公告)日：2008-02-28

    申请号：US11466793

    申请日：2006-08-24

    申请人： Hendrik J. van der Meyden ,  Neal Richard Dando ,  Stephen Joseph Lindsay

    发明人： Hendrik J. van der Meyden ,  Neal Richard Dando ,  Stephen Joseph Lindsay

    IPC分类号： B01D53/68

    CPC分类号： C25C3/22 ,  B01D53/12 ,  B01D53/685 ,  B01D2253/104 ,  B01D2257/2047 ,  C25C3/14

    摘要： The present invention provides, a method of reducing fluoride emissions from aluminum smelting including the steps of providing alumina at a preselected feed rate to pots containing an aluminum producing molten electrolyte, wherein the aluminum producing molten electrolyte evolves gaseous fluoride byproducts; transporting the gaseous fluoride byproducts to alumina-based dry scrubbers, wherein the alumina scrubbers absorb at least a portion of the gaseous fluoride byproducts; determining the inlet temperature into the dry scrubber; and adjusting the alumina feed rate to the dry scrubber to optimize the capture efficiency of the gaseous fluoride byproducts, wherein adjusting the aluminum feed rate includes increasing the aluminum feed rate to correspond to a first temperature and decreasing the feed rate to correspond to a second temperature, wherein the first temperature is greater than the second temperature.

    摘要翻译： 本发明提供了一种减少铝冶炼的氟化物排放的方法，包括以预选的进料速率向含有产生铝的熔融电解质的罐提供氧化铝的步骤，其中产生铝的熔融电解质产生气态氟化物副产物; 将气态氟化物副产物运输到氧化铝基洗涤器，其中氧化铝洗涤器吸收气态氟化物副产物的至少一部分; 确定进入干式洗涤器的入口温度; 以及调节到干洗涤器的氧化铝进料速率以优化气态氟化物副产物的捕获效率，其中调节铝进料速率包括增加铝进料速率以对应于第一温度并降低进料速率以对应于第二温度 ，其中所述第一温度大于所述第二温度。

    SYSTEMS AND METHODS FOR RESTRICTING SCALE IN GAS SCRUBBERS AND RELATED COMPONENTS
    10.
    发明申请
    SYSTEMS AND METHODS FOR RESTRICTING SCALE IN GAS SCRUBBERS AND RELATED COMPONENTS 有权
    用于限制气体冷却器和相关部件中的尺度的系统和方法

    公开(公告)号：US20090223367A1

    公开(公告)日：2009-09-10

    申请号：US12397248

    申请日：2009-03-03

    申请人： Neal Richard Dando

    发明人： Neal Richard Dando

    IPC分类号： C25C3/00 ,  B01D53/02

    CPC分类号： B01D53/685 ,  B01D2253/104 ,  B01D2257/2047

    摘要： Systems, methods and apparatus for restricting scale build-up in gas scrubbers and piping are disclosed. The scrubbers and/or pipes may have a coating disposed on internal surfaces thereof. The coating restricts formation of scale within the pipe, especially scale that would normally accumulate due to fluoride-enriched absorbents, such as fluoride-enriched alumina.

    摘要翻译： 公开了用于限制气体洗涤器和管道中的结垢的系统，方法和装置。 洗涤器和/或管道可以具有设置在其内表面上的涂层。 涂层限制了管内的垢的形成，特别是由于富含氟化物的吸收剂（如富含氟化物的氧化铝）而通常会积聚的垢。