Separation of Carbon Dioxide (Co2) From Gas Mixtures By Calcium Based Reaction Separation (Cars-Co2) Process
    21.
    发明申请
    Separation of Carbon Dioxide (Co2) From Gas Mixtures By Calcium Based Reaction Separation (Cars-Co2) Process 有权
    通过钙基反应分离(汽车-Co2)工艺从气体混合物中分离二氧化碳(Co2)

    公开(公告)号:US20080233029A1

    公开(公告)日:2008-09-25

    申请号:US11994316

    申请日:2006-06-28

    IPC分类号: B01D53/48

    摘要: A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas/fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRS—CO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCOa). Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRS—CO2 process. This process also identifies the application of a mesoporous CaCO3 structure, developed by a process detailed elsewhere, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.

    摘要翻译: 已经开发了一种基于反应的方法,用于从多组分气体混合物中选择性除去二氧化碳(CO 2 H 2),以提供与入口CO 2相比较的贫二氧化碳气流。 SUB>浓度。 所提出的方法通过与金属氧化物(例如氧化钙)的反应来影响CO 2 CO 2从气体(例如烟道气/燃料气体)的混合物中的分离。 用于CO 2(CaS 2 CO 2)工艺的基于钙的反应分离包括将含CO 2的气体与氧化钙(CaO)接触, 在反应器中使得CaO通过形成碳酸钙(CaCO 3)捕获CO 2。 一旦“消耗”,CaCO 3 3通过其煅烧再生,导致新鲜的CaO吸附剂的形成和CO 2的浓缩物流的逸出。 然后将“再生的”CaO再循环以进一步捕获更多的CO 2。 该碳酸化煅烧循环形成CaRS-CO 2 N 2工艺的基础。 该方法还确定了通过其他地方详细描述的方法开发的介孔CaCO 3 3结构的应用,其通过多次碳酸化和煅烧循环达到> 90%的转化率。 最后,在真空下的热再生(煅烧)提供了更好的吸附剂结构,其在多个循环中保持可重复的反应性水平。

    Methods and systems for synthesizing iron-based materials and sequestering carbon dioxide
    23.
    发明授权
    Methods and systems for synthesizing iron-based materials and sequestering carbon dioxide 有权
    用于合成铁基材料和螯合二氧化碳的方法和系统

    公开(公告)号:US08974757B2

    公开(公告)日:2015-03-10

    申请号:US13319831

    申请日:2010-05-14

    摘要: Methods and systems for sequestering carbon dioxide and generating hydrogen are disclosed. In some embodiments, the methods include the following: dissolving an iron based material that includes a carbonate-forming element into a solution including the carbonate-forming element and iron; increasing a pH of the solution to cause precipitation of iron oxide from the solution thereby generating a first source of Fe2O3; reacting the carbonate-forming element in the solution with a first source of carbon dioxide to produce a carbonate thereby sequestering the carbon dioxide; oxidizing the first source of Fe2O3 with a carbonaceous fuel thereby generating a second source of carbon dioxide and iron; and oxidizing the iron with steam thereby generating hydrogen and an iron oxide. Some embodiments include producing iron-based catalysts.

    摘要翻译: 公开了用于隔离二氧化碳和产生氢的方法和系统。 在一些实施方案中,所述方法包括:将包含碳酸酯形成元素的铁基材料溶解到包含碳酸酯形成元素和铁的溶液中; 增加溶液的pH使溶液中的氧化铁沉淀,从而产生第一Fe 2 O 3源; 使溶液中的碳酸酯形成元素与第一二氧化碳源反应以产生碳酸盐,从而螯合二氧化碳; 用碳质燃料氧化第一来源的Fe 2 O 3,从而产生第二二氧化碳和铁源; 并用蒸汽氧化铁,从而产生氢气和氧化铁。 一些实施方案包括生产铁基催化剂。

    Sorbent for separation of carbon dioxide (CO2) from gas mixtures
    28.
    发明授权
    Sorbent for separation of carbon dioxide (CO2) from gas mixtures 有权
    用于从气体混合物中分离二氧化碳(CO2)的吸附剂

    公开(公告)号:US07067456B2

    公开(公告)日:2006-06-27

    申请号:US10359763

    申请日:2003-02-06

    IPC分类号: B01J20/00

    摘要: A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas/fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRS-CO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCO3). Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRS-CO2 process. This process also identifies the application of a mesoporous CaCO3 structure, developed by a process detailed elsewhere, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.

    摘要翻译: 已经开发了一种基于反应的方法,用于从多组分气体混合物中选择性除去二氧化碳(CO 2 H 2),以提供与CO 2 CO 2相比耗尽的气流, 流中的入口CO 2 H 2浓度。 所提出的方法通过与金属氧化物(例如氧化钙)的反应来影响CO 2 CO 2从气体(例如烟道气/燃料气体)的混合物中的分离。 用于CO 2(CaS 2 CO 2)工艺的基于钙的反应分离包括将含CO 2的气体与氧化钙(CaO)接触, 在反应器中使得CaO通过形成碳酸钙(CaCO 3)而捕获CO 2。 一旦“消耗”,CaCO 3 3通过其煅烧再生,导致新鲜的CaO吸附剂的形成和CO 2的浓缩物流的逸出。 然后将“再生的”CaO再循环以进一步捕获更多的CO 2。 该碳酸化煅烧循环形成CaRS-CO 2 N 2工艺的基础。 该方法还确定了通过其他地方详细描述的方法开发的介孔CaCO 3 3结构的应用,其通过多次碳酸化和煅烧循环达到> 90%的转化率。 最后,在真空下的热再生(煅烧)提供了更好的吸附剂结构,其在多个循环中保持可重复的反应性水平。

    Carbonation ash reactivation process and system for combined SOx and NOx removal

    公开(公告)号:US06569388B1

    公开(公告)日:2003-05-27

    申请号:US09363912

    申请日:1999-07-28

    IPC分类号: B01D5350

    摘要: The present invention includes methods and apparatus useful in the removal of air pollutants. More specifically, this invention relates to methods and apparatus useful in mitigating major air pollutants (SOx and NOx) and trace toxins from coal-fired combustors. Using a method or apparatus of the present invention, a coal-fired combustor may be retrofitted to accommodate combined SOx/NOx removal technology for solid waste reduction and environmentally responsible utilization of dry flue gas (FGD) desulfurization product. The combined SOx/NOx control technology may integrate enhanced removal of SO2 at high to medium temperatures using a desulfurization process of the present invention with selective catalytic reduction technology for NOx. The reactivation of spent sorbent and dry FGD product may result in a more complete utilization of the ash and sorbent in the reduction of SO2 emissions, thereby reducing significantly the amount of sorbent used and the volume of by-product generated. Modifications to a power plant may result in significant changes to the waste stream. Based upon the process for dry FGD product reactivation to achieve enhanced SO2 removal and SCR for NOx removal, it may be possible to remove both sulfur and nitrogen oxides from high sulfur coal. The process is modular in nature (different components of the process can be by-passed as and when the need arises) and thus may have great flexibility and be applicable to various operating conditions.

    3D and real time electrical capacitance volume-tomography sensor design and image reconstruction
    30.
    发明授权
    3D and real time electrical capacitance volume-tomography sensor design and image reconstruction 有权
    3D和实时电容体积 - 层析成像传感器设计和图像重建

    公开(公告)号:US08614707B2

    公开(公告)日:2013-12-24

    申请号:US11909548

    申请日:2006-03-22

    IPC分类号: G06T17/00

    摘要: Dynamic three-dimensional image electrical capacitance tomography sensor system is disclosed. The technique generates, from the measured capacitance, a whole volume image of the region enclosed by the a geometrically three-dimensional capacitance sensor. A real time, three-dimensional imaging of a moving object or a real time volume imaging (i.e., four-dimensional (4D)) allows for a total interrogation scheme of the whole volume within the domain of an arbitrary shape of geometry to be implemented. The system comprises a 3D capacitance sensor, data acquisition electronics and the image reconstruction algorithm which enables the volume-image reconstruction. The electrode shape of the capacitance sensor can be rectangular, triangular, trapezium, or any shape to enclose a 3D section of the measuring domain and to distribute the electrical field intensity in three directions with equal sensitivity strength. The image reconstruction algorithm reconstructs simultaneously the image voxels in a three-dimensional array. The tomography sensor system may be multimodal.

    摘要翻译: 公开了动态三维图像电容层析成像传感器系统。 该技术从测量的电容产生由几何三维电容传感器包围的区域的整个体积图像。 移动物体或实时体积成像(即,四维(4D))的实时三维成像允许在任意几何形状的区域内的整个体积的总询问方案被实现 。 该系统包括3D电容传感器,数据采集电子装置和能够进行体积图像重建的图像重建算法。 电容传感器的电极形状可以是矩形,三角形,梯形或任何形状,以包围测量域的3D部分,并以相同的灵敏度强度在三个方向分布电场强度。 图像重构算法同时重建三维阵列中的图像体素。 层析成像传感器系统可以是多模式的。