-
1.发明授权Internal passive catalytic ammonia converter for reduction of main steam dose rate associated with hydrogen water chemistry 失效用于降低与氢水化学相关的主蒸汽剂量率的内部被动催化氨转化器
公开(公告)号：US5515406A
公开(公告)日：1996-05-07
申请号：US65964
申请日：1993-05-21
IPC分类号： G21D1/00 , G21C19/317 , G21D3/08
CPC分类号： G21C19/317
摘要： A passive catalytic ammonia converter operating in the water/steam mixture exiting the core of a boiling water reactor. The catalytic ammonia converter is made of catalytic material arranged and situated such that substantially all of the water/steam mixture entering the water/steam separator device flows over the surface of the catalytic material. The catalytic surfaces react ammonia and/or NO with O.sub.2 or H.sub.2 O.sub.2 in the water/steam mixture to form nitrite or nitrate. The passive catalytic ammonia converter is constructed to ensure that the pressure drop of the reactor water across the device is very small. The catalytic ammonia converter can include a plurality of stainless steel flow-through housings packed with catalytic ammonia converter material, which could take the form of tangled wire or strips, crimped ribbon, porous sintered metal composite or any other structure having a high surface area-to-volume ratio.
摘要翻译： 一种被动催化氨转化器，其工作在离开沸水反应堆核心的水/蒸汽混合物中。 催化氨转化器由催化材料制成，催化材料布置和定位，使得进入水/蒸汽分离器装置的基本上所有的水/蒸汽混合物流过催化材料的表面。 催化剂表面在水/蒸汽混合物中将氨和/或NO与O 2或H 2 O 2反应形成亚硝酸盐或硝酸盐。 被动催化氨转化器被构造成确保反应器水在整个装置上的压降非常小。 催化氨转化器可以包括多个不锈钢流通壳体，其中填充有催化氨转化器材料，其可以采取缠结线或条带，卷曲带，多孔烧结金属复合材料或具有高表面积的任何其它结构的形式， 体积比。
-
公开(公告)号：US4992232A
公开(公告)日：1991-02-12
申请号：US380790
申请日：1989-07-17
申请人： Robert L. Cowan, II , Dragomir Duitna , Robert J. Law , Chien-Chang Lin , Carl P. Ruiz , James L. Simpson
发明人： Robert L. Cowan, II , Dragomir Duitna , Robert J. Law , Chien-Chang Lin , Carl P. Ruiz , James L. Simpson
IPC分类号： G21C1/00 , G21C19/307
CPC分类号： G21C19/307
摘要： In a boiling water reactor nuclear plant, hydrogen is injected into the feed water to neutralize radiolysis which causes stress corrosion in stainless steel components. It has been discovered that by inhibiting volatile ammonia, and other gaseous nitrogen compounds from leaving the liquid phase portions of the plant to the steam phase portions of the plant, radiation is reduced to acceptable levels. Formation of ammonia is inhibited chemically, by altering the reaction paths for volatile nitrogen species with trace additives in the parts per billion range, suitable additives include nitrous oxide, copper, zinc, carbon dioxide, and other components. It has also been found that by manipulating the pH, the formation of the voltage nitrogen compounds, especially ammonia, is decreased. Similarly, by physically altering plant operating conditions to reduce sparging or scrubbing of the gases from areas of high radiation, confinement of the N-16 within the liquid phase of the plant within the reactor vessel occurs. It is further found that by decreasing the total hydrogen concentration in the core region, the N-16 volatility can be limited. This includes alternate hydrogen injection points and enhancement of the hydrogen-oxygen recombination reaction by e.g., catalysis by radiation or by surfaces. The possibility of increasing the N-16 holdup time in the steam phase is also considered. Finally, the concept of operating at a higher electrochemical potential which requires a lower hydrogen concentration and hence less N-16 converted to the volatile form is also described.
摘要翻译： 在沸水反应堆核电站中，将氢气注入给水中以中和放射分解，这导致不锈钢部件产生应力腐蚀。 已经发现，通过抑制挥发性氨和其它气态氮化合物将植物的液相部分离开到植物的蒸汽相部分，辐射降低到可接受的水平。 通过用十分之一范围的微量添加剂改变挥发性氮物种的反应路径，化学物质的形成被抑制，合适的添加剂包括一氧化二氮，铜，锌，二氧化碳等组分。 还已经发现，通过操纵pH，电压氮化合物，特别是氨的形成减少。 类似地，通过物理地改变植物操作条件以减少来自高辐射区域的气体的喷射或洗涤，发生在反应器容器内的植物的液相内的N-16的限制。 进一步发现，通过降低核心区域中的总氢浓度，可以限制N-16挥发性。 这包括交替的氢注入点和通过例如通过辐射或通过表面的催化来增强氢 - 氧复合反应。 也考虑在蒸汽阶段增加N-16滞留时间的可能性。 最后，还描述了在更高的电化学电势下操作的概念，其需要较低的氢浓度并因此减少转化为挥发性形式的N-16。
-
3.发明授权Method for monitoring noble metal distribution in reactor circuit during plant application 失效在工厂应用中监测电抗器电路中贵金属分布的方法
公开(公告)号：US5625656A
公开(公告)日：1997-04-29
申请号：US482243
申请日：1995-06-07
IPC分类号： B01J37/03 , C23F11/08 , C23F11/18 , G01N17/02 , G21C3/07 , G21C17/02 , G21C17/022 , G21C19/28 , G21C19/30 , G21C19/307
CPC分类号： B01J37/031 , C23F11/08 , C23F11/18 , C23F15/00 , G01N17/02 , G21C17/02 , G21C17/022 , G21C17/0225 , 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 ensuring the distribution of noble metal in the reactor circuit during plant application without measuring the reactor water for noble metal content by chemical analysis. The method involves the measurement of electrochemical corrosion potential in an autoclave or a high-flow test section that is connected to the reactor water circuit through sample lines downstream of the injection port, preferably the point in the reactor circuit which is furthest from the injection port. If the noble metal flows into the autoclave or test section at these distant points in the reactor circuit, then the noble metal will deposit on the test specimens inside the autoclave or test section. After the noble metal has been injected for a predetermined duration, the electrochemical corrosion potential autoclave or test section is exposed to hydrogen water chemistry conditions and the electrochemical corrosion potentials of the specimens inside the autoclave or test section will be measured to determine the extent of their catalytic response. A good catalytic response indicates that the noble metal has reached the locations upstream where electrochemical corrosion potential is being measured.
摘要翻译： 一种用于确保在植物施用期间在反应器回路中分布贵金属的方法，而不通过化学分析测量贵金属含量的反应器水。 该方法包括在高压灭菌器或高流量测试部分中测量电化学腐蚀电位，该高压灭菌器或高流量试验部分通过注入口下游的取样管线连接到反应器水回路，优选地在反应器电路中与注射端口最远的点 。 如果贵金属在反应器电路中的这些远处流入高压釜或试验部分，则贵金属将沉积在高压釜或试验部分内的试样上。 在将贵金属注入预定时间后，将电化学腐蚀潜力的高压釜或试验部分暴露于氢水化学条件下，并测量高压釜或试验部分内的试样的电化学腐蚀电位，以确定它们的程度 催化反应。 良好的催化反应表明贵金属已经到达测量电化学腐蚀电位的上游位置。
-
4.发明授权
公开(公告)号：US5285486A
公开(公告)日：1994-02-08
申请号：US982176
申请日：1992-11-25
IPC分类号： G21D1/00 , G21C19/317 , G21D3/08
CPC分类号： G21C19/317
摘要： A passive decomposer operating in the water/steam mixture exiting the core of a boiling water reactor. The decomposer comprises a catalytic material arranged and situated such that substantially all of the water/steam mixture entering the water/steam separator device flows over the surface of the catalytic material. The catalytic decomposing surfaces decompose hydrogen peroxide molecules dissolved in the liquid phase to form water and oxygen molecules. The passive catalytic decomposer is constructed to ensure that the pressure drop of the reactor water across the device is very small. The decomposer can include a plurality of stainless steel flow-through housings packed with stainless steel catalytic decomposer material, which could take the form of tangled wire or strips, crimped ribbon, porous sintered metal composite or any other structure having a high surface area-to-volume ratio.
摘要翻译： 在从沸水反应堆核心排出的水/蒸汽混合物中操作的被动分解器。 分解器包括催化材料，其被布置和定位成使得进入水/蒸汽分离器装置的基本上所有的水/蒸汽混合物流过催化材料的表面。 催化分解表面分解溶解在液相中的过氧化氢分子，形成水分子和氧分子。 被动催化分解器被构造成确保反应器水在整个装置上的压降非常小。 分解器可以包括多个不锈钢流通壳体，其中填充有不锈钢催化分解器材料，其可以采取缠结线或条带，卷曲带，多孔烧结金属复合材料或具有高表面积的任何其它结构 体积比。
-
5.发明授权Method and apparatus for maintaining proper noble metal loading for a noble metal application process for water-cooled nuclear reactors 失效用于维持水冷核反应堆贵金属应用工艺适当的贵金属负载的方法和装置公开(公告)号：US06473480B1
公开(公告)日：2002-10-29
申请号：US09734039
申请日：2000-12-12
申请人： Richard M. Kruger , Robert J. Law
发明人： Richard M. Kruger , Robert J. Law
IPC分类号： G21C900
CPC分类号： G21C17/0225 , G21C19/307 , G21Y2002/201 , G21Y2004/40 , G21Y2004/504
摘要： A non-steady state computer model of water in a Boiling Water Reactor (BWR) primary water flow circuit is used to represent the water chemistry and noble metal loading during, for example, an in situ noble metal application process. The modeling software is provided on a laptop or portable computer for real-time use in the field at different reactor sites. After inputting data representing the initial state of reactor water chemistry and operating conditions of the reactor, the model determines the water chemistry, pH, conductivity and noble metal loading throughout the BWR primary water flow circuit, including selected sample locations, as a function of time. Results are used to determine whether technical specifications on conductivity or other chemistry-related parameters will be exceeded during the noble metal application process. Values of rate constants used for modeling noble metal reactions may be changed on site at the reactor during the application process.
摘要翻译： 使用沸腾水反应堆（BWR）一次水流回路中的非稳态计算机模型来表示在例如原位贵金属应用过程中的水化学和贵金属负载。 建模软件提供在笔记本电脑或便携式计算机上，用于在不同反应堆场地实时使用。 在输入表示反应堆水化学的初始状态的数据和反应器的操作条件的数据之后，该模型确定了整个BWR初级水流回路中的水化学性质，pH值，导电率和贵金属负荷，包括选定的样品位置，作为时间的函数 。 结果用于确定在贵金属应用过程中是否超过电导率或其他化学相关参数的技术规格。 用于建模贵金属反应的速率常数的值可以在施加过程中在反应器的现场改变。
-
6.发明授权Monolithic sensor switch for detecting presence of stoichiometric H.sub.2 /O.sub.2 ratio in boiling water reactor circuit 失效用于检测沸水反应器电路中化学计量H2 / O2比率的单片传感器开关
公开(公告)号：US5571394A
公开(公告)日：1996-11-05
申请号：US437269
申请日：1995-05-08
IPC分类号： G01N27/30 , G01N27/403 , G01N27/26
CPC分类号： G01N27/4035
摘要： An electrode probe for measuring the electrochemical potential of a surface at a location of interest in a boiling water reactor. The probe has a monolithic sensor configuration built into a single stainless steel mineral insulated (MI) cable. This monolithic sensor can be used as a switch to detect when the appropriate concentration of dissolved hydrogen required to provide IGSCC mitigation is present at any location inside the reactor. Using the sensor switch, it is possible to in situ instantly determine the minimum hydrogen level required to reach the IGSCC protection potential. The sensor configuration consists of a metal/metal oxide/ZrO.sub.2 sensor and a noble metal sensor in a combination wherein the outer sheath of a mineral insulated cable acts as the conductor for the noble metal and the central conductor of the MI cable acts as the conductor for the metal/metal oxide/ZrO.sub.2. The metal/metal oxide/ZrO.sub.2 sensor acts as a reference electrode in the BWR environment (i.e., at constant pH) and the noble metal sensor acts as a hydrogen electrode which responds to the dissolved hydrogen content in the BWR water.
摘要翻译： 用于测量沸水反应器中感兴趣位置处的表面的电化学势的电极探针。 探头具有内置在单个不锈钢矿物绝缘（MI）电缆中的单片传感器配置。 该单片传感器可以用作开关，以检测在反应器内部的任何位置处是否存在提供IGSCC缓解所需的适当的溶解氢浓度。 使用传感器开关，可以即时确定达到IGSCC保护电位所需的最低氢气水平。 传感器配置由金属/金属氧化物/ ZrO2传感器和贵金属传感器组成，其中矿物绝缘电缆的外护套用作贵金属的导体，并且MI电缆的中心导体用作导体 用于金属/金属氧化物/ ZrO 2。 金属/金属氧化物/ ZrO 2传感器用作BWR环境中的参比电极（即，在恒定pH下），贵金属传感器用作响应于BWR水中溶解的氢含量的氢电极。
-
7.发明授权Method and apparatus for obtaining a water sample from the core of a boiling water reactor 失效从沸水反应器的核心获得水样的方法和装置
公开(公告)号：US4882122A
公开(公告)日：1989-11-21
申请号：US154260
申请日：1988-02-10
申请人： Robert A. Head , Robert L. Cowan , Robert J. Law
发明人： Robert A. Head , Robert L. Cowan , Robert J. Law
IPC分类号： G01N1/10 , G21C17/00 , G21C17/02 , G21C17/022
CPC分类号： G21C17/022
摘要： In a boiling water reactor, provision is made to sample the core bypass region immediate the top guide to determine the physical and chemical constituents of the moderating water. A conduit for a local power range monitor is fitted with a measurement assembly. The conduit and measurement assembly are inserted up to the vicinity of the top guide. A tube opening is provided to the bypass region immediate the top guide. During reactor operation, the saturated liquid in this region flashes to a steam water mixture (18% steam) at constant enthalpy and is rapidly removed from the reactor to measuring equipment in the reactor building. During removal, the radiolytic disassociated gases (namely hydrogen and oxygen) partition to the steam phase where their recombination is retarded and accurate measurement of their constituent content can be made. Also, temperature of the steam water mixture decreases thereby preserving unstable species like hydrogen peroxide that degrade much more rapidly a high temperatures. In the reactor building, the gases are further cooled, condensed and divided with a first stream being diverted and cooled for detailed chemical analysis and a second stream reheated and pressurized for measurement of electrochemical potential. A substantially real time measurement of the chemical state of the reactor to enable monitoring, measurement, and correction of harmful imbalance is provided.
-
8.发明授权Temperature-based method for controlling the amount of metal applied to metal oxide surfaces to reduce corrosion and stress corrosion cracking 有权用于控制施加到金属氧化物表面的金属的量的基于温度的方法以减少腐蚀和应力腐蚀开裂公开(公告)号：US06697449B2
公开(公告)日：2004-02-24
申请号：US10118926
申请日：2002-04-10
IPC分类号： G21C900
CPC分类号： G21C19/307 , C23F11/18 , G21Y2002/103 , G21Y2002/201 , G21Y2004/20 , G21Y2004/40
摘要： Method for controlling the amount of metal atoms deposited into an oxide layer present on a metal surface, which metal atoms increase the corrosion resistance of metal when present in the oxide film, wherein the metal surface is submerged in water at a selected temperature within the range of about to 200° to 550° F.; and a solution of a compound containing the metal which increases the corrosion resistance of the metal surface when present in the oxide film is injected into the water. The compound decomposes at the selected temperature to release atoms of the metal which incorporate in the oxide film at a desired loading.
摘要翻译： 用于控制沉积在金属表面上的氧化物层中的金属原子的量的方法，该金属原子在存在于氧化物膜中时增加了金属的耐腐蚀性，其中金属表面在选定温度范围内浸没在水中 约为200°至550°F。 并且当存在于氧化物膜中时，含有金属的化合物溶液，其将金属表面的耐腐蚀性提高到水中。 该化合物在所选择的温度下分解以释放掺入氧化物膜中的金属原子以所需的载量。
-
9.发明授权
公开(公告)号：US5208165A
公开(公告)日：1993-05-04
申请号：US648096
申请日：1991-01-31
申请人： Robert J. Law , Michel N. Robles , Dane T. Snyder
发明人： Robert J. Law , Michel N. Robles , Dane T. Snyder
CPC分类号： G21C17/0225 , Y10T436/2525 , Y10T436/255
摘要： Water testing means for monitoring circulating water coolant in service within a water cooled nuclear reactor system is disclosed. The invention is an improvement in such water testing means and comprises a preconditioning of selected sample specimens of water with a pH adjustment for inhibiting unbalancing an equilibrium in solution of water coolant with ion solutes.
-
公开(公告)号：US06714618B1
公开(公告)日：2004-03-30
申请号：US09196104
申请日：1998-11-20
IPC分类号： G21C900
CPC分类号： G21C19/307 , C23F11/18 , G21Y2002/103 , G21Y2002/201 , G21Y2004/20 , G21Y2004/40
摘要： Method for controlling the amount of metal atoms deposited into an oxide layer present on a metal surface, which metal atoms increase the corrosion resistance of metal when present in the oxide film, wherein the metal surface is submerged in water at a selected temperature within the range of about to 200° to 550° F.; and a solution of a compound containing the metal which increases the corrosion resistance of the metal surface when present in the oxide film is injected into the water. The compound decomposes at the selected temperature to release atoms of the metal which incorporate in the oxide film at a desired loading.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.028 秒)
