公开(公告)号：US07335902B2

公开(公告)日：2008-02-26

申请号：US10918229

申请日：2004-08-13

Applicant: Rengarajan Soundararajan

Inventor： Rengarajan Soundararajan

IPC: G21F5/00 ,  G21F1/00 ,  G21F1/10 ,  C09K3/00 ,  G21C7/24

CPC classification number: G21F9/36 ,  C08G18/2018 ,  C08G18/542 ,  C08G18/7664 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/003 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2209/18 ,  G21F1/106 ,  G21F9/06 ,  G21F9/30 ,  G21F9/305 ,  G21F9/307 ,  C08L75/04

Abstract: A urethane based polymer composition is provided that exhibits superior shielding properties during and after exposure to high level radiation. The composite is formed by mixing a liquid isocyanate monomer, preferably 4,4′-diisocyanate monomer with a liquid phenolic resin, preferably phenol formaldehyde resin, and a phosphate ester flame retardant. An optional pyridine catalyst may be added to shorten the cure time. The resulting composition cures at room temperature and can be utilized in several manners, including spraying or pouring the composition prior to curing over radioactive material to prevent leakage of radiation. The uncured composite can be sprayed on the walls of a room or container to prevent leakage of radiation and can also be used to contain radiation prior to demolition. The uncured composite can also be molded into bricks or panels for use in construction. In a preferred embodiment, the polymer composition further incorporates radioactive waste, namely depleted uranium oxide, and can be used in conjunction with specially designed containers for storing radioactive material. The resulting polymer/waste composition cures at room temperature and does not deteriorate or suffer structural damage when exposed to higher levels of gamma radiation, nor do the mechanical or chemical properties undergo any detectable change. The composition is resistant to biodegradation and combustion, and does not creep or shrink during thermal cycling.

Abstract translation: 提供了一种聚氨酯基聚合物组合物，其在暴露于高水平辐射期间和之后显示优异的屏蔽性能。 复合材料通过将液体异氰酸酯单体，优选4,4'-二异氰酸酯单体与液体酚醛树脂，优选苯酚甲醛树脂和磷酸酯阻燃剂混合而形成。 可以加入任选的吡啶催化剂以缩短固化时间。 所得组合物在室温下固化并且可以以几种方式使用，包括在固化放射性材料之前喷涂或浇注组合物以防止辐射泄漏。 未固化的复合材料可以喷涂在房间或容器的壁上，以防止辐射泄漏，并且还可以用于在拆除之前容纳辐射。 未固化的复合材料也可以模制成砖或面板用于施工。 在优选的实施方案中，聚合物组合物还包含放射性废物，即贫化铀氧化物，并且可以与用于储存放射性物质的专门设计的容器结合使用。 所得聚合物/废物组合物在室温下固化，并且在暴露于较高水平的γ辐射时不会劣化或遭受结构损伤，机械或化学性质也不会发生任何可检测的变化。 该组合物耐生物降解和燃烧，并且在热循环期间不会蠕变或收缩。

公开(公告)号：US4488952A

公开(公告)日：1984-12-18

申请号：US562153

申请日：1983-12-16

Applicant: Rengarajan Soundararajan

Inventor： Rengarajan Soundararajan

IPC: B01J19/12 ,  C10L9/02

CPC classification number: B01J19/121 ,  C10L9/02

Abstract: A method of removing sulphur from coal prior to burning of the coal is the subject of the present invention. The coal is first comminuted to a size of no more than one inch and preferably one-half inch in diameter. The coal particles are placed in a reaction chamber in an aqueous suspension to which is added an inorganic base capable of reacting with hydrogen sulphide in order to neutralize the latter, such base preferably being calcium hydroxide. A photoelectric catalyst, characterized by structural imperfections to provide active sites for supporting a free radical reaction, is also introduced into the reaction chamber. The coal is then subjected to electromagnetic irradiation of a specific energy level in order to create a free radical reaction which results in removal of the sulphur from the coal. The coal is then cleaned and separated from the aqueous media, and the inorganic base and elemental sulphur are removed from the aqueous media.

Abstract translation: 在燃烧煤之前从煤中除去硫的方法是本发明的主题。 煤首先被粉碎成直径不超过一英寸，优选半英寸的尺寸。 将煤粒子放置在水性悬浮液中的反应室中，加入能够与硫化氢反应的无机碱以中和后者，该碱优选为氢氧化钙。 特征在于提供用于支持自由基反应的活性位点的结构缺陷的光电催化剂也被引入到反应室中。 然后对煤进行特定能级的电磁辐射，以产生自由基反应，其导致从煤中除去硫。 然后将煤清洗并与水性介质分离，并从水性介质中除去无机碱和元素硫。

公开(公告)号：US06518477B2

公开(公告)日：2003-02-11

申请号：US09841791

申请日：2001-04-24

Applicant: Rengarajan Soundararajan

Inventor： Rengarajan Soundararajan

IPC: G21F932

CPC classification number: F23G5/0276 ,  B01D61/025 ,  C08G18/2018 ,  C08G18/542 ,  C08G18/7664 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/003 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2209/18 ,  G21F1/106 ,  G21F9/02 ,  G21F9/06 ,  G21F9/30 ,  G21F9/305 ,  G21F9/307 ,  G21F9/36 ,  C08L75/04

Abstract: A method for remediating non-homogeneous radioactive waste to significantly reduce the waste mass/volume and to convert such waste to products that meet federal regulatory compliance standards is disclosed. High level waste (HLW) stored in underground tanks is typically a multi component mixture. After removal of the waste from the tanks or other storage areas the waste is isolated in a thermal desorption-type reaction vessel where the waste is pyrolized at pre-determined and carefully controlled temperatures, pressures, and atmospheres. This process eliminates organics, volatile metals, moisture and other low boiling temperature/high vapor pressure components and converts non-volatile waste to more stable metal oxides. Off-gas treatment systems scrub, treat and dispose of all off-gas components. A thermal desorption-type apparatus especially well suited for performing the method of the present invention is also disclosed.

公开(公告)号：US20080006784A1

公开(公告)日：2008-01-10

申请号：US10918229

申请日：2004-08-13

Applicant: Rengarajan Soundararajan

Inventor： Rengarajan Soundararajan

IPC: G21F5/00

CPC classification number: G21F9/36 ,  C08G18/2018 ,  C08G18/542 ,  C08G18/7664 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/003 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2209/18 ,  G21F1/106 ,  G21F9/06 ,  G21F9/30 ,  G21F9/305 ,  G21F9/307 ,  C08L75/04

Abstract: A urethane based polymer composition is provided that exhibits superior shielding properties during and after exposure to high level radiation. The composite is formed by mixing a liquid isocyanate monomer, preferably 4,4′-diisocyanate monomer with a liquid phenolic resin, preferably phenol formaldehyde resin, and a phosphate ester flame retardant. An optional pyridine catalyst may be added to shorten the cure time. The resulting composition cures at room temperature and can be utilized in several manners, including spraying or pouring the composition prior to curing over radioactive material to prevent leakage of radiation. The uncured composite can be sprayed on the walls of a room or container to prevent leakage of radiation and can also be used to contain radiation prior to demolition. The uncured composite can also be molded into bricks or panels for use in construction. In a preferred embodiment, the polymer composition further incorporates radioactive waste, namely depleted uranium oxide, and can be used in conjunction with specially designed containers for storing radioactive material. The resulting polymer/waste composition cures at room temperature and does not deteriorate or suffer structural damage when exposed to higher levels of gamma radiation, nor do the mechanical or chemical properties undergo any detectable change. The composition is resistant to biodegradation and combustion, and does not creep or shrink during thermal cycling.

Abstract translation: 提供了一种聚氨酯基聚合物组合物，其在暴露于高水平辐射期间和之后显示优异的屏蔽性能。 复合材料通过将液体异氰酸酯单体，优选4,4'-二异氰酸酯单体与液体酚醛树脂，优选苯酚甲醛树脂和磷酸酯阻燃剂混合而形成。 可以加入任选的吡啶催化剂以缩短固化时间。 所得组合物在室温下固化并且可以以几种方式使用，包括在固化放射性材料之前喷涂或浇注组合物以防止辐射泄漏。 未固化的复合材料可以喷涂在房间或容器的壁上，以防止辐射泄漏，并且还可以用于在拆除之前容纳辐射。 未固化的复合材料也可以模制成砖或面板用于施工。 在优选的实施方案中，聚合物组合物还包含放射性废物，即贫化铀氧化物，并且可以与用于储存放射性物质的专门设计的容器结合使用。 所得聚合物/废物组合物在室温下固化，并且在暴露于较高水平的γ辐射时不会劣化或遭受结构损伤，机械或化学性质也不会发生任何可检测的变化。 该组合物耐生物降解和燃烧，并且在热循环期间不会蠕变或收缩。

公开(公告)号：US20050203229A1

公开(公告)日：2005-09-15

申请号：US10918228

申请日：2004-08-13

Applicant: Rengarajan Soundararajan

Inventor： Rengarajan Soundararajan

IPC: C08G18/20 ,  C08G18/54 ,  C08G18/76 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/00 ,  G21F1/10 ,  G21F9/06 ,  G21F9/30 ,  G21F9/36 ,  C08L1/00

CPC classification number: G21F9/36 ,  C08G18/2018 ,  C08G18/542 ,  C08G18/7664 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/003 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2209/18 ,  G21F1/106 ,  G21F9/06 ,  G21F9/30 ,  G21F9/305 ,  G21F9/307 ,  C08L75/04

Abstract: A urethane based polymer composition is provided that exhibits superior shielding properties during and after exposure to high level radiation. The composite is formed by mixing a liquid isocyanate monomer, preferably 4,4′-diisocyanate monomer with a liquid phenolic resin, preferably phenol formaldehyde resin, and a phosphate ester flame retardant. An optional pyridine catalyst may be added to shorten the cure time. The resulting composition cures at room temperature and can be utilized in several manners, including spraying or pouring the composition prior to curing over radioactive material to prevent leakage of radiation. The uncured composite can be sprayed on the walls of a room or container to prevent leakage of radiation and can also be used to contain radiation prior to demolition. The uncured composite can also be molded into bricks or panels for use in construction. In a preferred embodiment, the polymer composition further incorporates radioactive waste, namely depleted uranium oxide, and can be used in conjunction with specially designed containers for storing radioactive material. The resulting polymer/waste composition cures at room temperature and does not deteriorate or suffer structural damage when exposed to higher levels of gamma radiation, nor do the mechanical or chemical properties undergo any detectable change. The composition is resistant to biodegradation and combustion, and does not creep or shrink during thermal cycling.

Abstract translation: 提供了一种聚氨酯基聚合物组合物，其在暴露于高水平辐射期间和之后显示优异的屏蔽性能。 复合材料通过将液体异氰酸酯单体，优选4,4'-二异氰酸酯单体与液体酚醛树脂，优选苯酚甲醛树脂和磷酸酯阻燃剂混合而形成。 可以加入任选的吡啶催化剂以缩短固化时间。 所得组合物在室温下固化并且可以以几种方式使用，包括在固化放射性材料之前喷涂或浇注组合物以防止辐射泄漏。 未固化的复合材料可以喷涂在房间或容器的壁上，以防止辐射泄漏，并且还可以用于在拆除之前容纳辐射。 未固化的复合材料也可以模制成砖或面板用于施工。 在优选的实施方案中，聚合物组合物还包含放射性废物，即贫化铀氧化物，并且可以与用于储存放射性物质的专门设计的容器结合使用。 所得聚合物/废物组合物在室温下固化，并且在暴露于较高水平的γ辐射时不会劣化或遭受结构损伤，机械或化学性质也不会发生任何可检测的变化。 该组合物耐生物降解和燃烧，并且在热循环期间不会蠕变或收缩。

公开(公告)号：US06805815B1

公开(公告)日：2004-10-19

申请号：US09775359

申请日：2001-02-01

Applicant: Rengarajan Soundararajan

Inventor： Rengarajan Soundararajan

IPC: C09K300

CPC classification number: G21F9/36 ,  C08G18/2018 ,  C08G18/542 ,  C08G18/7664 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/003 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2209/18 ,  G21F1/106 ,  G21F9/06 ,  G21F9/30 ,  G21F9/305 ,  G21F9/307 ,  C08L75/04

Abstract: A urethane based polymer composition is provided that exhibits superior shielding properties during and after exposure to high level radiation. The composite is formed by mixing a liquid isocyanate monomer, preferably 4,4′-diisocyanate monomer with a liquid phenolic resin, preferably phenol formaldehyde resin, and a phosphate ester flame retardant. An optional pyridine catalyst may be added to shorten the cure time. The resulting composition cures at room temperature and can be utilized in several manners, including spraying or pouring the composition prior to curing over radioactive material to prevent leakage of radiation. The uncured composite can be sprayed on the walls of a room or container to prevent leakage of radiation and can also be used to contain radiation prior to demolition. The uncured composite can also be molded into bricks or panels for use in construction. In a preferred embodiment, the polymer composition further incorporates radioactive waste, namely depleted uranium oxide, and can be used in conjunction with specially designed containers for storing radioactive material. The resulting polymer/waste composition cures at room temperature and does not deteriorate or suffer structural damage when exposed to higher levels of gamma radiation, nor do the mechanical or chemical properties undergo any detectable change. The composition is resistant to biodegradation and combustion, and does not creep or shrink during thermal cycling.

Abstract translation: 提供了一种聚氨酯基聚合物组合物，其在暴露于高水平辐射期间和之后显示优异的屏蔽性能。 复合材料通过将液体异氰酸酯单体，优选4,4'-二异氰酸酯单体与液体酚醛树脂，优选苯酚甲醛树脂和磷酸酯阻燃剂混合而形成。 可以加入任选的吡啶催化剂以缩短固化时间。 所得组合物在室温下固化并且可以以几种方式使用，包括在固化放射性材料之前喷涂或浇注组合物以防止辐射泄漏。 未固化的复合材料可以喷涂在房间或容器的壁上，以防止辐射泄漏，并且还可以用于在拆除之前容纳辐射。 未固化的复合材料也可以模制成砖或面板用于施工。 在优选的实施方案中，聚合物组合物还包含放射性废物，即贫化铀氧化物，并且可以与用于储存放射性物质的专门设计的容器结合使用。 所得聚合物/废物组合物在室温下固化，并且在暴露于较高水平的γ辐射时不会劣化或遭受结构损伤，机械或化学性质也不会发生任何可检测的变化。 该组合物耐生物降解和燃烧，并且在热循环期间不会蠕变或收缩。