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    ENGINEERED SIC-SIC COMPOSITE AND MONOLITHIC SIC LAYERED STRUCTURES
    2.
    发明申请
    ENGINEERED SIC-SIC COMPOSITE AND MONOLITHIC SIC LAYERED STRUCTURES 审中-公开

    公开(公告)号：US20200027580A1

    公开(公告)日：2020-01-23

    申请号：US16271556

    申请日：2019-02-08

    申请人： General Atomics

    发明人： Christian Peter Deck ,  Jiping Zhang ,  Christina Back ,  Jonathan David Sheeder

    IPC分类号： G21C3/07 ,  G21C21/02 ,  G21C3/20 ,  C23C16/32 ,  B32B18/00 ,  C04B35/80

    摘要： Systems, structures, devices, and fabrication processes for ceramic matrix composites suitable for use in a nuclear reactor environment and other applications requiring materials that can withstand high temperatures and/or highly corrosive environments are disclosed. In one aspect, a ceramic composite structure is provided. The structure comprises a chamber including an external shell and a hollow space inside the external shell. The external shell includes an inner composite layer including a first composite structure, a middle composite layer placed outside of the inner composite layer, the middle composite layer including a second composite structure that is different from the first composite structure, and an outer monolithic layer that has a spatially uniform material property and placed outside of the middle composite layer.

    PRODUCING HIGH PURITY HYDROGEN AND CARBON MONOXIDE FROM A HYDROCARBON MATERIAL
    5.
    发明申请
    PRODUCING HIGH PURITY HYDROGEN AND CARBON MONOXIDE FROM A HYDROCARBON MATERIAL 有权

    公开(公告)号：US20230047197A1

    公开(公告)日：2023-02-16

    申请号：US17402487

    申请日：2021-08-13

    申请人： General Atomics

    发明人： Jiping Zhang ,  Jonathan David Sheeder ,  Robert Schleicher ,  Jonas Opperman

    IPC分类号： C01B3/24 ,  C01B32/40 ,  C01B32/50 ,  B01J19/24

    摘要： Disclosed are apparatuses, systems, methods, and devices for generating hydrogen pyrolysis of hydrocarbons (methane, diesel, JP8, etc.) in a reactor. The reactor includes multiple channels in parallel. A hydrocarbon flows in a channel and decomposes into hydrogen and carbon. Hydrogen gas flows out and some of the carbon will deposit on the channel wall. Once carbon deposition reaches a predetermined level, the hydrocarbon flow stops, and air or oxygen is caused to flow into the channels to oxidize carbon into carbon monoxide or carbon dioxide and supply heat to neighboring channels. Simultaneously, the hydrocarbon will flow into neighboring channels causing decomposition into hydrogen and carbon in the neighboring channels. When the carbon coating in the neighboring channels reaches a predetermined level, the gas flow is switched again to air or oxygen. In this way, each channel alternates between decomposing the hydrocarbon and oxidizing the deposited carbon.

    SYSTEM AND METHOD FOR USING A PULSE FLOW CIRCULATION FOR ALGAE CULTIVATION
    6.
    发明申请
    SYSTEM AND METHOD FOR USING A PULSE FLOW CIRCULATION FOR ALGAE CULTIVATION 审中-公开
    使用脉冲流动循环进行ALGAE生成的系统和方法

    公开(公告)号：US20160251608A1

    公开(公告)日：2016-09-01

    申请号：US15149717

    申请日：2016-05-09

    申请人： GENERAL ATOMICS

    发明人： David A. Hazlebeck ,  Jiping Zhang ,  Kevin W. Downey ,  Xiaoxi Wu

    IPC分类号： C12M1/00 ,  A01G33/00 ,  C12M1/36 ,  C12N1/12 ,  C12M1/34 ,  C12M1/06

    CPC分类号： C12M29/12 ,  A01G33/00 ,  C12M21/02 ,  C12M23/02 ,  C12M23/18 ,  C12M27/02 ,  C12M41/44 ,  C12M41/48 ,  C12N1/12 ,  Y02A40/88

    摘要： A device for generating a pulsed flow in a channel containing a circulating algal culture can include a plate that is pivotably mounted on the channel and an activator. A pulsed flow is generated in the channel by first positioning the plate to impede the flow of circulating algal culture and then rotating the plate to a submerged position. The pulsed flow can be employed to counteract the negative effects of bio-fouling on algae cultivation equipment. In another arrangement, a device for generating a pulsed flow in a sloped raceway that is in fluid communication with a sump can include a gate. In different embodiments, the gate can operate as a so-called “pinch gate” or as a so-called “overflow gate.” In another aspect, a variable rate pump, such as a centrifugal pump, a screw pump or an airlift pump, is described for establishing a pulsed flow in a channel.

    摘要翻译： 用于在包含循环藻类培养物的通道中产生脉冲流的装置可以包括可枢转地安装在通道上的板和活化剂。 通过首先定位板以阻止循环藻类培养物的流动，然后将板旋转到浸没位置，在通道中产生脉冲流。 脉冲流可用于抵消生物污染对藻类栽培设备的负面影响。 在另一种布置中，用于在与油槽流体连通的倾斜滚道中产生脉冲流的装置可以包括闸门。 在不同的实施例中，门可以作为所谓的“夹紧门”或所谓的“溢流门”运行。另一方面，可变速率泵，例如离心泵，螺杆泵或空气提升泵 描述了用于在通道中建立脉冲流。

    System and Method for Using a Pulse Flow Circulation for Algae Cultivation
    7.
    发明申请
    System and Method for Using a Pulse Flow Circulation for Algae Cultivation 审中-公开
    使用脉冲流循环进行藻类培养的系统和方法

    公开(公告)号：US20140322805A1

    公开(公告)日：2014-10-30

    申请号：US14270800

    申请日：2014-05-06

    申请人： GENERAL ATOMICS

    发明人： David A. Hazlebeck ,  Jiping Zhang ,  Kevin W. Downey ,  Xiaoxi Wu

    IPC分类号： C12M1/00

    CPC分类号： C12M29/12 ,  A01G33/00 ,  C12M21/02 ,  C12M23/02 ,  C12M23/18 ,  C12M27/02 ,  C12M41/44 ,  C12M41/48 ,  C12N1/12 ,  Y02A40/88

    摘要： A device for generating a pulsed flow in a channel containing a circulating algal culture can include a plate that is pivotably mounted on the channel and an activator. A pulsed flow is generated in the channel by first positioning the plate to impede the flow of circulating algal culture and then rotating the plate to a submerged position. The pulsed flow can be employed to counteract the negative effects of bio-fouling on algae cultivation equipment. In another arrangement, a device for generating a pulsed flow in a sloped raceway that is in fluid communication with a sump can include a gate. In different embodiments, the gate can operate as a so-called “pinch gate” or as a so-called “overflow gate.” In another aspect, a variable rate pump, such as a centrifugal pump, a screw pump or an airlift pump, is described for establishing a pulsed flow in a channel.

    摘要翻译： 用于在包含循环藻类培养物的通道中产生脉冲流的装置可以包括可枢转地安装在通道上的板和活化剂。 通过首先定位板以阻止循环藻类培养物的流动，然后将板旋转到浸没位置，在通道中产生脉冲流。 脉冲流可用于抵消生物污染对藻类栽培设备的负面影响。 在另一种布置中，用于在与油槽流体连通的倾斜滚道中产生脉冲流的装置可以包括闸门。 在不同的实施例中，门可以作为所谓的“夹紧门”或所谓的“溢流门”运行。另一方面，可变速率泵，例如离心泵，螺杆泵或空气提升泵 描述了用于在通道中建立脉冲流。

    System and Method for Using a Pulse Flow Circulation for Algae Cultivation
    8.
    发明申请
    System and Method for Using a Pulse Flow Circulation for Algae Cultivation 有权
    使用脉冲流循环进行藻类培养的系统和方法

    公开(公告)号：US20140030796A1

    公开(公告)日：2014-01-30

    申请号：US13973638

    申请日：2013-08-22

    申请人： General Atomics

    发明人： David A. Hazlebeck ,  Jiping Zhang ,  Xiaoxi Wu

    IPC分类号： C12N1/12

    CPC分类号： C12N1/12 ,  C12M21/02 ,  C12M23/02 ,  C12M29/12

    摘要： A system and method for using a pulse flow to circulate algae in an algae cultivation apparatus are provided. In order to counteract the negative effects of biofouling on algae cultivation equipment, a pulse flow is created to periodically move through an algae cultivation apparatus. The pulse flow will dislodge algae cells adhering to various surfaces of the apparatus, and it will also create turbulence to stir up any algae cells which may have settled onto the bottom of the apparatus. To produce an increased fluid flow rate required to create an effective pulse flow, a sump, which is periodically filled with drawn algal culture from the apparatus, is located at an elevated position above the apparatus. When released, the algal culture travels through a transfer pipe and into the apparatus with gravity causing the algal culture to flow at a very high rate.

    摘要翻译： 提供了一种在藻类培养装置中使用脉冲流来循环藻类的系统和方法。 为了抵消生物污染对藻类栽培设备的负面影响，产生脉冲流，以周期性地移动通过藻类栽培设备。 脉冲流将移除附着在装置各个表面上的藻类细胞，并且还会产生湍流以搅动可能已经沉降到装置底部的任何藻类细胞。 为了产生产生有效脉冲流所需的增加的流体流速，从设备周期性地填充有拉脱藻培养物的贮槽位于装置上方的升高位置。 当释放时，藻类培养物通过输送管道传播并进入设备中，导致藻类培养物以非常高的速率流动。

    SILICON TO SILICON CARBIDE CONVERSION FOR CERAMIC MATRIX COMPOSITE FABRICATION
    10.
    发明申请
    SILICON TO SILICON CARBIDE CONVERSION FOR CERAMIC MATRIX COMPOSITE FABRICATION 有权

    公开(公告)号：US20220081368A1

    公开(公告)日：2022-03-17

    申请号：US17018921

    申请日：2020-09-11

    申请人： General Atomics

    发明人： Jiping Zhang ,  Austin Travis ,  Jonas Opperman ,  George Jacobsen

    IPC分类号： C04B35/80 ,  C04B35/628 ,  C04B35/65 ,  C04B35/657

    摘要： Disclosed are techniques and methods for producing silicon carbide and ceramic matrix composites from hydrocarbons. In one aspect, a method includes preforming a shape using silicon carbide fibers placed into a chamber, evacuating the chamber causing a silicon and polymer slurry to enter the chamber, and pressurizing the chamber causing the silicon and polymer slurry to permeate the silicon carbide fibers. The method includes heating the chamber to cause pyrolysis of the polymer and a hydrocarbon passed into the chamber into carbon and hydrogen gas. The carbon from the pyrolyzed polymer and hydrocarbon provide a coating of carbon on the silicon in the silicon and polymer slurry. The method includes heating the chamber to a higher temperature causing the silicon to melt and react with the carbon to form silicon carbide. The formed silicon carbide and the silicon carbide fibers form the ceramic matrix composite.