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19 条记录 (耗时 0.012 秒)

    Pseudo-fouling detector and use thereof to control an industrial water process
    2.
    发明授权
    Pseudo-fouling detector and use thereof to control an industrial water process 有权
    伪污染检测器及其用途来控制工业水处理

    公开(公告)号：US06475394B2

    公开(公告)日：2002-11-05

    申请号：US09737260

    申请日：2000-12-13

    申请人： Kun Xiong ,  Gary L. Horacek ,  Robert L. Wetegrove ,  Rodney H. Banks

    发明人： Kun Xiong ,  Gary L. Horacek ,  Robert L. Wetegrove ,  Rodney H. Banks

    IPC分类号： C02F100

    CPC分类号： G01N17/008

    摘要： A system and method are provided which enables the monitoring and if desired controlling of fouling within a fluid system. The present invention includes a pseudo-fouling detector system with a pair of identical sensors, where said sensors measure a variable, such as, temperature or pH, in a fluid, producing an electric output representative of the variable. The variable measurements are used to calculate a fouling index which is further used to develop fouling treatment strategies for controlling the amount of fouling in the fluid system.

    摘要翻译： 提供了一种系统和方法，其能够监测并且如果期望地控制流体系统内的结垢。 本发明包括具有一对相同传感器的伪污染检测器系统，其中所述传感器在流体中测量诸如温度或pH的变量，产生代表该变量的电输出。 可变测量用于计算结垢指数，该指数进一步用于开发用于控制流体系统中结垢量的污垢处理策略。

    Monitoring of film forming living desposits
    3.
    发明授权
    Monitoring of film forming living desposits 失效
    成膜生物监测

    公开(公告)号：US5796478A

    公开(公告)日：1998-08-18

    申请号：US900546

    申请日：1997-07-25

    申请人： Robert L. Wetegrove

    发明人： Robert L. Wetegrove

    IPC分类号： C12M1/34 ,  C12M1/40 ,  G01N21/64 ,  G01N33/483

    CPC分类号： G01N21/6486 ,  G01N21/94

    摘要： A method and apparatus for detecting, measuring and monitoring films formed on exposed surfaces of a fluid system caused by microorganisms present in the fluid system. Pursuant to the present invention, a fluorometer is utilized to irradiate an exposed surface with light of the appropriate magnitude and intensity which results in an excitation of the NAD(P)H and ATP and other fluorescent molecules contained within microorganisms and subsequent fluorescent emission from the microorganisms. As a result, films caused by the presence of microorganisms in the fluid system can be detected and monitored.

    摘要翻译： 一种用于检测，测量和监测由存在于流体系统中的微生物引起的在流体系统的暴露表面上形成的膜的方法和装置。 根据本发明，使用荧光计照射具有适当大小和强度的光的暴露表面，这导致NAD（P）H和ATP以及微生物中包含的其它荧光分子的激发和随后的荧光发射 微生物。 结果，可以检测和监测由流体系统中微生物的存在引起的膜。

    Clarification aid for the Bayer process
    6.
    发明授权
    Clarification aid for the Bayer process 失效
    澄清援助的拜耳过程

    公开(公告)号：US5217620A

    公开(公告)日：1993-06-08

    申请号：US980387

    申请日：1992-11-23

    申请人： Robert P. Mahoney ,  Lawrence J. Connelly ,  Robert L. Wetegrove

    发明人： Robert P. Mahoney ,  Lawrence J. Connelly ,  Robert L. Wetegrove

    IPC分类号： C01F7/06 ,  C02F1/52 ,  C02F1/54

    CPC分类号： C02F1/54 ,  C01F7/0653 ,  C02F1/5263

    摘要： A process for improved flocculation of Bayer process red mud-containing liquor uses a conventional water soluble anionic flocculant to form a red mud phase and a supernatant from the red mud-containing liquor, the supernatant containing suspended solids. The process is characterized by the addition of a water soluble clarification aid in addition to the conventional flocculant, wherein the clarification aid is pullulan, lactan, zooglan, rhamsan, or combinations thereof. The clarification aid is added to the red mud-containing liquor in an amount sufficient to reduce the concentration of suspended solids in the supernatant.

    摘要翻译： 使用传统的水溶性阴离子絮凝剂形成红泥相和含红泥液体的上清液，上清液含悬浮固体，改善了拜耳法红泥浆的絮凝过程。 该方法的特征在于除了常规的絮凝剂之外添加水溶性澄清助剂，其中澄清助剂是支链淀粉，内酰胺，动物淀粉，二唑或其组合。 将澄清助剂以足以降低上清液中悬浮固体浓度的量加入含红泥的液体中。

    Control system for a process
    10.
    发明授权
    Control system for a process 失效
    一个过程的控制系统

    公开(公告)号：US4587023A

    公开(公告)日：1986-05-06

    申请号：US646251

    申请日：1984-08-31

    申请人： Sanjay R. Srivatsa ,  Robert L. Wetegrove ,  Robert R. Patzelt

    发明人： Sanjay R. Srivatsa ,  Robert L. Wetegrove ,  Robert R. Patzelt

    IPC分类号： B01D33/00 ,  B01D33/04 ,  B01D37/04 ,  G05B13/02

    CPC分类号： G05B13/0205 ,  B01D33/042 ,  B01D33/463 ,  B01D37/04

    摘要： A perturbed feedback control system for a process. Inputs to the process include a feed stream and a manipulated variable. The manipulated variable is controlled by a feedback controller. Measurements of a parameter measured "downstream" of the process are taken periodically and fed back to the controller. The feedback controller generates a control response on the basis of a comparison of the two most recent values of the downstream parameter. The comparison is made by calculating a perturbed set point which includes the values of the downstream parameter taken at the two most recent sampling periods. In a specific embodiment, the perturbed set point also includes measurements of the most recent and preceding values of the manipulated variable. A control response is applied to the manipulated variable by the feedback controller based on the value of the perturbed set point. The control system has been applied to optimize the feed rate of chemicals for sludge dewatering on a twin belt filter press.

    摘要翻译： 用于过程的扰动反馈控制系统。 过程的输入包括进料流和操作变量。 操纵变量由反馈控制器控制。 测量过程中测量的“下游”参数的周期性测量并反馈给控制器。 反馈控制器基于下游参数的两个最新值的比较来生成控制响应。 通过计算扰动的设定点进行比较，该设定点包括在两个最近采样周期取得的下游参数的值。 在特定实施例中，扰动的设定点还包括操纵变量的最近和先前值的测量。 控制响应由反馈控制器基于扰动设定值的值应用于操纵变量。 控制系统已经应用于优化双带式压滤机污泥脱水化学品的进料速率。