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    Electrically heated dehydrogenation process
    1.
    发明授权
    Electrically heated dehydrogenation process 有权

    公开(公告)号：US11578019B2

    公开(公告)日：2023-02-14

    申请号：US17352632

    申请日：2021-06-21

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： Rakesh Agrawal ,  Zewei Chen ,  Peter Oladipupo

    IPC: C07C5/327 ,  B01J19/00 ,  B01J19/24

    Abstract: Systems and processes for dehydrogenating one or more alkanes using electrically heated dehydrogenation reactors. The source of electric energy or power can be a power grid, solar panel, windmill, hydropower, nuclear power, fuel cell, gas turbines, steam turbines, portable generator or the like. The systems and processes provided herein result in a simpler dehydrogenation process which is particularly beneficial at a small scale and at remote locations, including the well site.

    PROCESS FOR UPGRADING NATURAL GAS LIQUIDS FROM SHALE GAS WITHOUT FRONT-END DEMETHANIZER
    2.
    发明申请
    PROCESS FOR UPGRADING NATURAL GAS LIQUIDS FROM SHALE GAS WITHOUT FRONT-END DEMETHANIZER 有权

    公开(公告)号：US20220281782A1

    公开(公告)日：2022-09-08

    申请号：US17747637

    申请日：2022-05-18

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： Rakesh Agrawal ,  Yiru Li

    IPC: C07C5/333 ,  C07C2/06 ,  C10L3/10

    Abstract: Processes and systems for upgrading natural gas liquids. At least a portion of the natural gas liquid components in a shale gas stream can be dehydrogenated to their corresponding olefin derivatives prior to separating any methane from the liquids. Further processing subsequent to dehydrogenation could include various separations, oligomerizing olefins produced in the dehydrogenation step, recovering desired products, etc. The order of the processing steps subsequent to dehydrogenation could be adjusted in various cases.

    Process to produce alkenes from shale gas
    3.
    发明授权
    Process to produce alkenes from shale gas 有权

    公开(公告)号：US11434184B2

    公开(公告)日：2022-09-06

    申请号：US17352601

    申请日：2021-06-21

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： Rakesh Agrawal ,  Zewei Chen

    IPC: C07C5/327 ,  C07C7/04

    Abstract: Systems and processes for producing one or more alkenes from shale gas. The process includes at least two dehydrogenation reactors whereby propane, or a mixture of propane and butane, can be dehydrogenated in a first reactor and ethane can be dehydrogenated in a second reactor. The lighter components which serve as chemical inert and thermal mass are separated from the dehydrogenated product after each reactor.

    HOMOGENEOUS PRECURSOR FORMATION METHOD AND DEVICE THEREOF
    4.
    发明申请
    HOMOGENEOUS PRECURSOR FORMATION METHOD AND DEVICE THEREOF 有权
    均质前体形成方法及其装置

    公开(公告)号：US20160333200A1

    公开(公告)日：2016-11-17

    申请号：US15219450

    申请日：2016-07-26

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： Rakesh Agrawal ,  Ruihong Zhang ,  Bryce Chryst Walker ,  Carol Handwerker

    IPC: C09D7/12 ,  H01L31/18 ,  H01L31/072 ,  C01B19/00 ,  H01L31/032

    CPC classification number: C09D7/63 ,  C01B19/002 ,  C09D7/41 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02568 ,  H01L21/02601 ,  H01L21/02628 ,  H01L31/0326 ,  H01L31/072 ,  H01L31/1864 ,  Y02E10/50

    Abstract: A direct solution method based on a versatile amine-thiol solvent mixture which dissolves elemental metals, metal salts, organometallic complexes, metal chalcogenides, and metal oxides is described. The metal containing and metal chalcogenide precursors can be prepared by dissolving single or multiple metal sources, chalcogens, and/or metal chalcogenide compounds separately, simultaneously, or stepwise. Multinary metal chalcogenides containing at least one of copper, zinc, tin, indium, gallium, cadmium, germanium, and lead, with at least one of sulfur, selenium, or both are obtained from the above-mentioned metal chalcogenide precursors in the form of thin films, nanoparticles, inks, etc. Furthermore, infiltration of metal containing compounds into a porous structure can be achieved using the amine-thiol based precursors. In addition, due to the appreciable solubility of metal sources, metal chalcogenides, and metal oxides in the mixture of amine(s) and thiol(s), this solvent mixture can be used to remove these materials from a system.

    Abstract translation: 描述了基于溶解元素金属，金属盐，有机金属络合物，金属硫族化物和金属氧化物的通用胺 - 硫醇溶剂混合物的直接溶液方法。 金属含量和金属硫族化物前体可以通过分别，同时或逐步溶解单个或多个金属源，硫属元素和/或金属硫族化合物来制备。 以上述金属硫属元素前体从铜，锌，锡，铟，镓，镉，锗和铅中的至少一种与硫，硒或二者中的至少一种一起获得的多元金属硫族化物以 薄膜，纳米颗粒，油墨等。此外，使用胺 - 硫醇基前体可以实现含金属化合物渗透到多孔结构中。 此外，由于金属源，金属硫族化物和金属氧化物在胺和硫醇的混合物中的可溶性，可以使用该溶剂混合物从系统中除去这些材料。

    Multicomponent Dividing Wall Columns
    8.
    发明申请
    Multicomponent Dividing Wall Columns 有权
    多组分分隔墙柱

    公开(公告)号：US20150119612A1

    公开(公告)日：2015-04-30

    申请号：US14525205

    申请日：2014-10-27

    Applicant: Purdue Research Foundation

    Inventor： Rakesh Agrawal ,  Gautham Madenoor Ramapriya

    IPC: B01D3/14 ,  C07C7/04

    CPC classification number: B01D3/141

    Abstract: For an n-component mixture (n≧3), an array of new distillation columns is disclosed with vertical partitions that allow independent control of the vapor flowrates in each partitioned zone, while operating the columns to produce constituent product streams. Specifically, all such more operable columns with vertical partitions for ternary and quaternary feed mixtures are illustrated. For a ternary feed, through extensive computation, the minimum heat duty for each of the new columns is same as for the FTC configuration. The new columns with vertical partitions become even more attractive when the vapor split between column sections must be controlled within a narrow range. Finally, it is disclosed how a new column with vertical partition(s) drawn for an n-component mixture can be adapted to distil feed mixtures that contain more than n-components.

    Abstract translation: 对于n组分混合物（n≥3），公开了一系列新的蒸馏塔，其具有垂直隔板，其允许独立控制每个分隔区域中的蒸汽流量，同时操作塔以产生构成产物流。 具体地，示出了具有用于三元和四元进料混合物的垂直分隔件的所有这样更可操作的柱。 对于三元进料，通过广泛的计算，每个新色谱柱的最小加热量与FTC配置相同。 当柱段之间的蒸气分离必须控制在窄范围内时，具有垂直分隔的新列变得更有吸引力。 最后，公开了如何为n组分混合物绘制具有垂直分区的新色谱柱可以适应于蒸馏含有多于n-组分的进料混合物。

    Photovoltaic structures for use in agriculture farms
    9.
    发明授权
    Photovoltaic structures for use in agriculture farms 有权

    公开(公告)号：US12041897B2

    公开(公告)日：2024-07-23

    申请号：US17474003

    申请日：2021-09-13

    Applicant: Purdue Research Foundation

    Inventor： Rakesh Agrawal ,  Muhammad Alam ,  Mitchell Tuinstra

    IPC: A01G9/24 ,  H02S20/10

    CPC classification number: A01G9/243 ,  H02S20/10

    Abstract: A method and apparatus for generating solar power in agricultural fields while minimally impacting crop growth and farming efforts, including positioning an elongated solar panel above crops, wherein the elongated solar panel runs generally parallel to longitudinal lines and wherein the elongated solar panel has at least one solar transducing face and an endless edge surrounding and perpendicular to the at least one solar transducing face, automatically pivoting the elongated solar panel such that the at least one solar transducing face is oriented parallel to incident solar rays during predetermined times when plant growth requires incident sunlight, automatically pivoting the elongated solar panel such that the at least one solar transducing face is oriented parallel to the vertical during rain, automatically pivoting the elongated solar panel out of the way of heavy farm equipment, and automatically pivoting the elongated solar panel such that the at least one solar transducing face is oriented perpendicular to incident solar rays at predetermined times when plant growth does not require direct sunlight. The elongated solar panel is positioned sufficiently above crops to give clearance to heavy farm equipment passing therebelow and/or adjacent panels are spaced sufficiently apart such that heavy farm equipment may pass therebetween.

    Methane ethane crackers
    10.
    发明授权
    Methane ethane crackers 有权

    公开(公告)号：US11267768B2

    公开(公告)日：2022-03-08

    申请号：US16832092

    申请日：2020-03-27

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： Rakesh Agrawal ,  Peter Oladipupo

    IPC: C07C4/04 ,  C07C4/06 ,  C07C5/333 ,  B01J8/06 ,  B01J8/08 ,  B01J8/18

    Abstract: A process for producing olefins by cracking paraffins in the presence of methane. In the conventional steam cracking processes for olefin production, steam is used as a diluent in the feed mixture to the thermal cracker. In the processes provided herein, methane replaces steam as a diluent in the feed mixture to the thermal cracker. Replacing steam with methane as a diluent has a potential for cost savings in the construction and operation of a thermal cracking plant for olefin production. In addition, it leads to a much simpler cracking process compared to the conventional steam cracking technology as in the state of the art.

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