公开(公告)号：WO2013016322A1

公开(公告)日：2013-01-31

申请号：PCT/US2012/047947

申请日：2012-07-24

Applicant: GENERAL ATOMICS

Inventor： HAZLEBECK, David A. ,  ZHANG, Jiping ,  WU, Xiaoxi

IPC: C12M1/00

CPC classification number: C12N1/12 ,  C12M21/02 ,  C12M23/02 ,  C12M29/12

Abstract: 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.

Abstract translation: 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。 脉冲流将消除粘附在设备各个表面上的藻类细胞，并且还会产生湍流以搅拌可能已经沉降到设备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，引起藻类培养物以非常高的速率流动。

公开(公告)号：WO2019089212A3

公开(公告)日：2019-05-09

申请号：PCT/US2018/055704

申请日：2018-10-12

Applicant: GENERAL ATOMICS

Inventor： SHEEDER, Jonathan, David ,  ZHANG, Jiping ,  DECK, Christian, Peter ,  KHALIFA, Hesham, Ezzat ,  STEMKE, Robert, Warren ,  AUSTIN, Brian, Stephen ,  VASUDEVAMURTHY, Gokul ,  BACALSKI, Carlos ,  SONG, Eric ,  BACK, Christina, Allyssa

IPC: G21C13/028

Abstract: This patent document relates to 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. In one exemplary aspect, a method of joining and sealing ceramic structures is disclosed. The method comprises forming a joint of a ceramic structure and an end plug using a sealing material, wherein the end plug has a hole that goes through a top surface and a bottom surface of the end plug; filling the ceramic structure with a desired gas composition through the hole; heating a material into a molten form using a heat source; and directing the material into the hole, wherein the material solidifies to seal the end plug.

公开(公告)号：WO2023018967A1

公开(公告)日：2023-02-16

申请号：PCT/US2022/040219

申请日：2022-08-12

Applicant: GENERAL ATOMICS

Inventor： ZHANG, Jiping ,  SHEEDER, Jonathan David ,  SCHLEICHER, Robert ,  OPPERMAN, Jonas

IPC: C01B3/24

Abstract: 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.

公开(公告)号：WO2018031596A3

公开(公告)日：2018-02-15

申请号：PCT/US2017/045990

申请日：2017-08-08

Applicant: GENERAL ATOMICS

Inventor： DECK, Christian, Peter ,  ZHANG, Jiping ,  BACK, Christina ,  SHEEDER, Jonathan, David

IPC: G21C3/62

Abstract: 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.

公开(公告)号：WO2022055556A1

公开(公告)日：2022-03-17

申请号：PCT/US2021/028497

申请日：2021-04-21

Applicant: GENERAL ATOMICS

Inventor： ZHANG, Jiping ,  TRAVIS, Austin ,  OPPERMAN, Jonas ,  JACOBSEN, George

IPC: C04B35/573 ,  C04B35/628 ,  C01B32/984

Abstract: 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.

公开(公告)号：WO2019089212A2

公开(公告)日：2019-05-09

申请号：PCT/US2018/055704

申请日：2018-10-12

Applicant: GENERAL ATOMICS

Inventor： SHEEDER, Jonathan, David ,  ZHANG, Jiping ,  DECK, Christian, Peter ,  KHALIFA, Hesham, Ezzat ,  STEMKE, Robert, Warren ,  AUSTIN, Brian, Stephen ,  VASUDEVAMURTHY, Gokul ,  BACALSKI, Carlos ,  SONG, Eric ,  BACK, Christina, Allyssa

Abstract: This patent document relates to 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. In one exemplary aspect, a method of joining and sealing ceramic structures is disclosed. The method comprises forming a joint of a ceramic structure and an end plug using a sealing material, wherein the end plug has a hole that goes through a top surface and a bottom surface of the end plug; filling the ceramic structure with a desired gas composition through the hole; heating a material into a molten form using a heat source; and directing the material into the hole, wherein the material solidifies to seal the end plug.

公开(公告)号：WO2022087311A1

公开(公告)日：2022-04-28

申请号：PCT/US2021/056108

申请日：2021-10-21

Applicant: GENERAL ATOMICS

Inventor： ZHANG, Jiping ,  GAZZA, Jack ,  VASUDEVAMURTHY, Gokul ,  OPPERMAN, Jonas ,  BLACKLOCK, Arthur ,  TRAVIS, Austin

IPC: G21C3/20 ,  G21C3/17 ,  G21C3/18 ,  C04B35/00 ,  G21C21/02

Abstract: Fuel rod designs and techniques are provided to encapsulate nuclear fuel pellets (130) in nuclear fuel rods (105). The tubular cladding (110) in the disclosed fuel rods includes silicon carbide and a metal filler structure (120) formed of a metal that becomes molten during a nuclear reaction of the nuclear fuel pellets and located inside the tubular cladding to include a metal tube that fills in a gap between the nuclear fuel pellets and an interior side wall of the tubular cladding and structured to include a closed metal end cap (120A) at one end of the nuclear fuel pellets to leave a space between one end of the interior of the tubular cladding and the closed metal end cap of the metal filler structure as a reservoir (150).

公开(公告)号：WO2018031596A2

公开(公告)日：2018-02-15

申请号：PCT/US2017/045990

申请日：2017-08-08

Applicant: GENERAL ATOMICS

Inventor： DECK, Christian, Peter ,  ZHANG, Jiping ,  BACK, Christina ,  SHEEDER, Jonathan, David

IPC: G21C3/62

Abstract: 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.

Abstract translation: 公开了适用于核反应堆环境和需要能承受高温和/或高腐蚀性环境的材料的其它应用的陶瓷基复合材料的系统，结构，装置和制造工艺。 在一个方面，提供了一种陶瓷复合结构。 该结构包括腔室，该腔室包括外壳和在该外壳内的中空空间。 外壳包括内复合层和外单片层，所述内复合层包括第一复合结构，放置在内复合层外侧的中间复合层，中间复合层包括不同于第一复合结构的第二复合结构， 具有空间均匀的材料属性并放置在中间复合层的外面。