Method for distributing an aqueous solution containing a peroxygen in
clay
    31.
    发明授权
    Method for distributing an aqueous solution containing a peroxygen in clay 失效
    在粘土中分配含有过氧化物的水溶液的方法

    公开(公告)号:US4747728A

    公开(公告)日:1988-05-31

    申请号:US900048

    申请日:1986-08-25

    摘要: The present invention is a method for distributing a colloid-free, aqueous solution containing a peroxygen compound in a particulate matter containing clay without causing the clay to swell. It has been found that hydrogen peroxide alone causes swelling of clays. It is well-known that monovalent ions cause clays to disperse and swell. It is unexpected to find that perborate and persulfate anions do not cause clays to swell, even in the presence of sodium ions. The process is useful for enhancing the biodegradation of contaminants in clayey soils or for winning mineral values from clayey ore deposits.

    摘要翻译: 本发明是一种在不使粘土膨胀的情况下将含有过氧化合物的无胶体水溶液分散在含有粘土的颗粒物质中的方法。 已经发现单独的过氧化氢引起粘土溶胀。 众所周知,一价离子使粘土分散和溶胀。 意外的是,即使在钠离子存在下,过硼酸盐和过硫酸盐阴离子也不会引起粘土溶胀。 该过程对于增强粘土土壤中污染物的生物降解或从粘土矿床中获得矿物质值是有用的。

    Method for decontaminating a permeable subterranean formation
    34.
    发明授权
    Method for decontaminating a permeable subterranean formation 失效
    净化渗透性地层的方法

    公开(公告)号:US4591443A

    公开(公告)日:1986-05-27

    申请号:US669409

    申请日:1984-11-08

    摘要: The present invention is a process to oxidize a contaminant in a permeable subterranean formation by introducing an aqueous treating solution into the formation which solution contains hydrogen peroxide and a compound to control the mobility of the aqueous solution by increasing the viscosity, the density, or modifying the interfacial properties of the aqueous solution within the formation. The aqueous treating solution may also contain stabilizers for the hydrogen peroxide, free radical initiators, or free radical traps. Optionally, the formation may be pretreated to modify the permeability of the formation, to deactivate or remove hydrogen peroxide decomposition catalyst or to uniformly distribute free radical initiators therein.

    摘要翻译: 本发明是一种通过将含水过氧化氢溶液引入地层中的水处理溶液和通过增加粘度,密度或改变来控制水溶液的迁移率的化合物来氧化可渗透地层中的污染物的方法 地层内水溶液的界面性质。 水处理溶液还可以含有用于过氧化氢,自由基引发剂或自由基捕获剂的稳定剂。 任选地,可以预处理地层以改变地层的渗透性,去活化或除去过氧化氢分解催化剂或在其中均匀分布自由基引发剂。

    Vacuum spool piece and joint
    35.
    发明授权
    Vacuum spool piece and joint 失效
    真空阀芯和接头

    公开(公告)号:US4502714A

    公开(公告)日:1985-03-05

    申请号:US426407

    申请日:1982-09-29

    摘要: A joint is made from first and second vacuum spool pieces connected end to end. Each spool piece includes an inner conduit surrounded by and spaced from an outer jacket. Each outer jacket includes an expansion-contraction portion adjacent each end thereof. Each end portion of each jacket has a first member in sealing contact with a mating second member on the inner conduit for retaining a vacuum in the annular space. After two spool pieces are joined, the first and second members are shifted relative to one another so as to preclude any direct conductive heat leak path and permit the vacuum in the annular space of one spool piece to communicate with the vacuum in the annular space of the other spool piece.

    摘要翻译: 接头由端对端连接的第一和第二真空阀芯制成。 每个卷轴件包括由外护套包围和间隔开的内导管。 每个外护套包括邻近其每个端部的膨胀 - 收缩部分。 每个护套的每个端部具有与内管道上的匹配的第二构件密封接触的第一构件,用于将真空保持在环形空间中。 在两个卷轴片接合之后,第一和第二构件相对于彼此移位,以便排除任何直接导电的热泄漏路径,并允许一个卷轴片的环形空间中的真空与环形空间中的真空连通 另一个卷轴片。