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    Passive Injection of a Chemical Solution into a Process Stream
    1.
    发明申请
    Passive Injection of a Chemical Solution into a Process Stream 有权
    将化学溶液无源注入工艺流

    公开(公告)号：US20140360606A1

    公开(公告)日：2014-12-11

    申请号：US14298191

    申请日：2014-06-06

    申请人： Robert James Law ,  Robert L. Cowan ,  Thomas P. Diaz ,  Samson Hettiarachchi

    发明人： Robert James Law ,  Robert L. Cowan ,  Thomas P. Diaz ,  Samson Hettiarachchi

    IPC分类号： B01F13/02

    CPC分类号： B01F15/0412 ,  B01F5/0495 ,  F16K19/003 ,  G05D11/006 ,  Y10T137/2218

    摘要： A system and method of injecting a chemical into a high pressure process stream without pumps or other active components. The system utilizes the differential pressure created by resistive losses of downstream components within a high pressure process stream. A bypass side stream is taken from an upstream pressure location and returned to the downstream side of the resistive inline process component. The chemical solution vessel is pressurized by the higher side of the pressure differential. The solution then passes through a flow controlling capillary tube exiting on the lower pressure differential side into the bypass stream. The high flow rate chemically diluted bypass stream then returns to the process stream at the lower differential process stream tie-in. The chemical solution is isolated from the process water pressuring the vessel by a movable separating device preventing mixing of the two fluids. The vessel can also be pressurized by gas.

    摘要翻译： 将化学品注入高压工艺流而不使用泵或其他活性组分的系统和方法。 该系统利用由高压工艺流中的下游部件的电阻损耗产生的压差。 旁路侧流从上游压力位置获取，并返回到电阻内联过程组件的下游侧。 化学溶液容器由压力差的较高侧加压。 然后溶液通过从低压差侧出来的流动控制毛细管进入旁路流。 然后，高流量化学稀释的旁路流在较低的差分过程流束缚下返回到过程流。 化学溶液是通过可移动的分离装置从加工水中分离出来的，以防止两种流体的混合。 容器也可以用气体加压。

    Radiation-induced palladium doping of metals to protect against stress corrosion cracking
    3.
    发明授权
    Radiation-induced palladium doping of metals to protect against stress corrosion cracking 失效
    金属的辐射诱导钯掺杂，以防止应力腐蚀开裂

    公开(公告)号：US5602888A

    公开(公告)日：1997-02-11

    申请号：US416656

    申请日：1995-04-05

    申请人： Samson Hettiarachchi ,  Thomas P. Diaz ,  Gary P. Wozadlo

    发明人： Samson Hettiarachchi ,  Thomas P. Diaz ,  Gary P. Wozadlo

    IPC分类号： G21D1/00 ,  B01J37/03 ,  C23C30/00 ,  C23F11/08 ,  C23F11/18 ,  G01N17/02 ,  G21C3/07 ,  G21C17/02 ,  G21C17/022 ,  G21C19/28 ,  G21C19/30 ,  G21C19/307 ,  G21D3/08 ,  G21C9/00

    CPC分类号： G21C17/0225 ,  B01J37/031 ,  C23F11/08 ,  C23F11/18 ,  G01N17/02 ,  G21C17/02 ,  G21C17/022 ,  G21C19/28 ,  G21C19/30 ,  G21C19/307 ,  G21C3/07 ,  G21Y2002/102 ,  G21Y2002/103 ,  G21Y2002/104 ,  G21Y2002/204 ,  G21Y2004/10 ,  G21Y2004/20 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/40

    摘要： A method for mitigating crack growth on the surface of stainless steel or other alloy components in a water-cooled nuclear reactor wherein a solution or suspension of a compound containing a noble metal is injected into the coolant water while the reactor is not generating nuclear heat, e.g., during shutdown or recirculation pump heatup. During shutdown, the reactor coolant water reaches temperatures as low as 120.degree. F., in contrast to the water temperature of 550.degree. F. during normal operation. During pump heatup, the water temperature reaches 400.degree.-450.degree. F. At these reduced temperatures, the rate of thermal decomposition of the injected noble metal compound is reduced. However, radiation-induced decomposition also occurs inside the reactor. In particular, the noble metal compound can be decomposed by the gamma radiation emanating from the nuclear fuel core of the reactor. The noble metal compound decomposes under reactor thermal and radiation conditions to release ions/atoms of the noble metal which incorporate in or deposit on the oxide film formed on the stainless steel and other alloy components. As a result, the electrochemical potential of the metal surface is maintained at a level below the critical potential in the presence of low levels of hydrogen to protect against intergranular stress corrosion cracking.

    摘要翻译： 一种用于减轻水冷核反应堆中不锈钢或其他合金组分表面上的裂纹扩展的方法，其中将含有贵金属的化合物的溶液或悬浮液注入冷却水中，同时反应器不产生核热， 例如在停机或再循环泵加热期间。 在停机期间，反应堆冷却水的温度低至120°F，与正常运行时的550°F水温相反。 在泵加热期间，水温达到400°-450°F。在这些降低的温度下，注入的贵金属化合物的热分解速率降低。 然而，辐射诱导的分解也发生在反应器内部。 特别地，贵金属化合物可以通过从反应器的核燃料芯发出的γ射线分解。 贵金属化合物在反应器热和辐射条件下分解，以释放掺入或沉积在不锈钢和其它合金组分上形成的氧化膜上的贵金属的离子/原子。 因此，在低水平的氢气存在下，金属表面的电化学势能保持在低于临界电位的水平，以防止晶间应力腐蚀开裂。

    Passive injection of a chemical solution into a process stream
    5.
    发明授权
    Passive injection of a chemical solution into a process stream 有权
    将化学溶液无源注入工艺流

    公开(公告)号：US09533270B2

    公开(公告)日：2017-01-03

    申请号：US14298191

    申请日：2014-06-06

    申请人： Robert James Law ,  Robert L Cowan ,  Thomas P Diaz ,  Samson Hettiarachchi

    发明人： Robert James Law ,  Robert L Cowan ,  Thomas P Diaz ,  Samson Hettiarachchi

    IPC分类号： B01F15/04 ,  B01F5/04 ,  G05D11/00 ,  F16K11/00

    CPC分类号： B01F15/0412 ,  B01F5/0495 ,  F16K19/003 ,  G05D11/006 ,  Y10T137/2218

    摘要： A system and method of injecting a chemical into a high pressure process stream without pumps or other active components. The system utilizes the differential pressure created by resistive losses of downstream components within a high pressure process stream. A bypass side stream is taken from an upstream pressure location and returned to the downstream side of the resistive inline process component. The chemical solution vessel is pressurized by the higher side of the pressure differential. The solution then passes through a flow controlling capillary tube exiting on the lower pressure differential side into the bypass stream. The high flow rate chemically diluted bypass stream then returns to the process stream at the lower differential process stream tie-in. The chemical solution is isolated from the process water pressuring the vessel by a movable separating device preventing mixing of the two fluids. The vessel can also be pressurized by gas.

    摘要翻译： 将化学品注入高压工艺流而不使用泵或其他活性组分的系统和方法。 该系统利用由高压工艺流中的下游部件的电阻损耗产生的压差。 旁路侧流从上游压力位置获取，并返回到电阻内联过程组件的下游侧。 化学溶液容器由压力差的较高侧加压。 然后溶液通过从低压差侧出来的流动控制毛细管进入旁路流。 然后，高流量化学稀释的旁路流在较低的差分过程流束缚下返回到过程流。 化学溶液是通过可移动的分离装置从加工水中分离出来的，以防止两种流体的混合。 容器也可以用气体加压。

    Chemical injection system and chemical delivery process/method of injecting into an operating power reactor
    8.
    发明授权
    Chemical injection system and chemical delivery process/method of injecting into an operating power reactor 有权
    化学注入系统和化学品输送过程/注入工作电力反应堆的方法

    公开(公告)号：US08054933B2

    公开(公告)日：2011-11-08

    申请号：US12000717

    申请日：2007-12-17

    申请人： Luong Cam Tran ,  Thomas P. Diaz ,  Samson Hettiarachchi ,  Paul Y. Shu ,  David P. Siegwarth

    发明人： Luong Cam Tran ,  Thomas P. Diaz ,  Samson Hettiarachchi ,  Paul Y. Shu ,  David P. Siegwarth

    IPC分类号： G21C9/00

    CPC分类号： G21C17/0225 ,  G21C19/28

    摘要： An injection system designed to deliver a chemical solution into a reactor through feedwater system taps during normal operating condition of a power reactor is disclosed. The process of delivery is via positive displacement pumps. Injection of chemical is in a concentrated solution form, which is internally diluted by the system prior to discharging from the skid. The injection system minimizes chemical loss due to deposition on the transit line, enables a higher concentrated solution to be used as the injectant, eliminates the time consuming laborious process of chemical dilution, raises chemical solution to the pressure required for injection, prevents solid precipitations out of solution at the injection pump head through the use of a flush solution, and deposits fresh chemical on new crack surfaces that develop during a power reactor start-up, shutdown and operation.

    摘要翻译： 公开了一种注射系统，其设计用于在动力反应堆的正常操作条件下通过给水系统抽头将化学溶液输送到反应器中。 输送过程是通过正排量泵。 注射化学品是浓缩溶液形式，其在从滑板排出之前由系统内部稀释。 注射系统可以最大限度地减少由于在输送管线上沉积引起的化学损失，使更高浓度的溶液能够用作注射剂，消除耗时费力的化学稀释过程，提高注射所需压力的化学溶液，防止固体沉淀出来 通过使用冲洗溶液在注射泵头处的溶液，并将新鲜的化学物质储存在在电力反应堆起动，停机和操作期间发展的新的裂纹表面上。

    Chemical injection system and chemical delivery process/method of injecting into an operating power reactor
    9.
    发明申请
    Chemical injection system and chemical delivery process/method of injecting into an operating power reactor 有权
    化学注入系统和化学品输送过程/注入工作电力反应堆的方法

    公开(公告)号：US20090154636A1

    公开(公告)日：2009-06-18

    申请号：US12000717

    申请日：2007-12-17

    申请人： Luong Cam Tran ,  Thomas P. Diaz ,  Samson Hettiarachchi ,  Paul Y. Shu ,  David P. Siegwarth

    发明人： Luong Cam Tran ,  Thomas P. Diaz ,  Samson Hettiarachchi ,  Paul Y. Shu ,  David P. Siegwarth

    IPC分类号： G21C19/28

    CPC分类号： G21C17/0225 ,  G21C19/28

    摘要： An injection system designed to deliver a chemical solution into a reactor through feedwater system taps during normal operating condition of a power reactor is disclosed. The process of delivery is via positive displacement pumps. Injection of chemical is in a concentrated solution form, which is internally diluted by the system prior to discharging from the skid. The injection system minimizes chemical loss due to deposition on the transit line, enables a higher concentrated solution to be used as the injectant, eliminates the time consuming laborious process of chemical dilution, raises chemical solution to the pressure required for injection, prevents solid precipitations out of solution at the injection pump head through the use of a flush solution, and deposits fresh chemical on new crack surfaces that develop during a power reactor start-up, shutdown and operation.

    摘要翻译： 公开了一种注射系统，其设计用于在动力反应堆的正常操作条件下通过给水系统抽头将化学溶液输送到反应器中。 输送过程是通过正排量泵。 注射化学品是浓缩溶液形式，其在从滑板排出之前由系统内部稀释。 注射系统可以最大限度地减少由于在输送管线上沉积引起的化学损失，使更高浓度的溶液能够用作注射剂，消除耗时费力的化学稀释过程，提高注射所需压力的化学溶液，防止固体沉淀出来 通过使用冲洗溶液在注射泵头处的溶液，并将新鲜的化学物质储存在在电力反应堆起动，停机和操作期间发展的新的裂纹表面上。