Apparatus and method for indicating liquid level in a chemical tank
    1.
    发明授权
    Apparatus and method for indicating liquid level in a chemical tank 失效
    用于指示化学罐中的液位的装置和方法

    公开(公告)号:US06398382B1

    公开(公告)日:2002-06-04

    申请号:US09591863

    申请日:2000-06-12

    IPC分类号: F21V3103

    摘要: An illumination apparatus for indicating the liquid level in a chemical storage tank is provided. The apparatus includes a transparent globe surrounding a light bulb mounted by flanges to upper portions of a storage tank, and being illuminated by an external electrical supply. Optionally the light bulb may be cooled by either allowing gas or air contained in the storage tank pass through a hole in the globe to interact with and cool the light bulb, or supplying a gas to the globe and circulating it around the light bulb. A shadow line is cast at the surface level of the liquid in the tank, and can be visibly seen through the translucent walls of the tank from some distance away.

    摘要翻译: 提供一种用于指示化学品储罐中的液位的照明装置。 该装置包括透明的球体,该透明球体围绕由法兰安装到灯的上部的灯泡,并由外部电源照明。 可选地,灯泡可以通过允许容纳在储罐中的气体或空气通过球体中的孔而相互作用并冷却灯泡或者将气体供应到球体并使其围绕灯泡循环来冷却。 阴影线在罐中的液体的表面水平处被铸造,并且可以从罐的半透明壁可见地远离一些距离。

    Isopropyl alcohol scrubbing system
    3.
    发明授权
    Isopropyl alcohol scrubbing system 失效
    异丙醇洗涤系统

    公开(公告)号:US06306197B1

    公开(公告)日:2001-10-23

    申请号:US09556118

    申请日:2000-04-19

    IPC分类号: B01D5314

    CPC分类号: B01D53/1487 B01D53/1425

    摘要: A system and method for treating process gas streams containing isopropyl alcohol (IPA) to reduce the concentration of IPA therein. The invented system includes a scrubber unit that receives a process stream containing a concentration of IPA and reduces the concentration of IPA therein to below a determined threshold. The scrubber includes a reverse osmosis assembly that significantly reduces water consumption for the scrubbing process as compared to conventional once-through systems. The system may be operated at an elevated pH to prevent biofouling from inhibiting the operation of the reverse osmosis assembly. The system may contain a softening step on the make up water system to prevent scaling in the reverse osmosis system and a softening step on a sidestream of the scrubber water recirculation loop to reduce scrubber tower salting/scaling and to control the pH of the scrubbing liquid.

    摘要翻译: 一种用于处理含有异丙醇(IPA)的工艺气流以降低其中的IPA浓度的系统和方法。 本发明的系统包括洗涤器单元,其接收含有浓度为IPA的过程流,并将其中的IPA浓度降低至低于所确定的阈值。 洗涤器包括反渗透组件,其与常规的一次通过系统相比显着地减少了洗涤过程的耗水量。 该系统可以在升高的pH下操作以防止生物污垢抑制反渗透组件的操作。 该系统可以在补充水系统上包含软化步骤以防止反渗透系统中的结垢和洗涤器水循环回路的侧流上的软化步骤以减少洗涤塔盐析/结垢并控制洗涤液的pH 。

    Water purification system and method
    5.
    发明授权
    Water purification system and method 失效
    净水系统及方法

    公开(公告)号:US5651894A

    公开(公告)日:1997-07-29

    申请号:US612796

    申请日:1995-12-13

    摘要: An ultrapure water purification scheme that incorporates the use of certain RO filtration membranes that are especially susceptible to oxidative attack employs the combination reducing/metals scavenger/biocidal agent dithiocarbamate as a pretreatment additive to maintain a non-oxidizing environment, to bind contaminant metals to improve their removal from source water, and to reduce microbial content. In addition, the generation of oxidants by cavitation effects is avoided by a reduced pressure retentate recycle. Both measures prevent oxidative attack and fouling of the RO membranes.

    摘要翻译: 结合使用特别容易发生氧化攻击的RO过滤膜的超纯水净化方案采用组合还原/金属清除剂/杀生物剂二硫代氨基甲酸盐作为预处理添加剂,以保持非氧化环境,以结合污染金属以改善 从源水中除去,并减少微生物含量。 此外,通过减压滞留物再循环避免了通过空化效应产生氧化剂。 这两种措施都能防止RO膜的氧化侵袭和结垢。

    Nox scrubbing system and method
    6.
    发明授权
    Nox scrubbing system and method 有权
    Nox擦洗系统和方法

    公开(公告)号:US06325983B1

    公开(公告)日:2001-12-04

    申请号:US09556117

    申请日:2000-04-19

    IPC分类号: B01D5354

    摘要: A treatment system for process exhaust streams containing NOx. The system includes a plurality of sequential scrubbing assemblies that collectively receive and contact a process exhaust stream containing NOx and a water stream to produce a product exhaust stream with a concentration of NOx that is below a determined threshold value. The removed NOx forms a portion of a system waste liquid stream that includes a majority of the NOx removed from the process exhaust stream.

    摘要翻译: 用于处理含有NOx的废气流的处理系统。 该系统包括多个连续洗涤组件,其共同地接收和接触含有NOx和水流的工艺废气流,以产生具有低于确定的阈值的NOx浓度的产物排出流。 去除的NOx形成系统废液流的一部分,其包括从工艺废气流中除去的大部分NOx。