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    SYSTEMS AND TECHNIQUES FOR CLEANING PRESSURE MEMBRANE SYSTEMS USING A WATER-IN-AIR CLEANING STREAM
    1.
    发明申请
    SYSTEMS AND TECHNIQUES FOR CLEANING PRESSURE MEMBRANE SYSTEMS USING A WATER-IN-AIR CLEANING STREAM 有权

    公开(公告)号：US20220226782A1

    公开(公告)日：2022-07-21

    申请号：US17576984

    申请日：2022-01-16

    申请人： Ecolab USA Inc.

    发明人： Seong-Hoon Yoon ,  Hui Li ,  Craig Myers ,  Daniel Meier ,  Donald Johnson

    IPC分类号： B01D65/02 ,  C02F1/44 ,  G01N33/18 ,  G01N21/78

    摘要： Membrane filtration systems can be used to purify liquid streams for downstream use. In practice, foulant can build-up on the surface of a membrane within a filtration system over time. The effectiveness of the filtration system will deteriorate if the fouling is not properly controlled. In some examples, a method of controlling membrane fouling in a pressurized membrane system involves supplying a feed stream that is predominately air mixed with water to the membrane. In other words, the feed stream a greater volume of air than water, even though it is the water being processed by the membrane. Supplying the pressurized membrane system with a feed stream that contains a greater volume of air than water can yield significantly better performance than supplying the membrane with a feed stream that contains a greater volume of water than air.

    COOLING WATER MONITORING AND CONTROL SYSTEM
    2.
    发明申请
    COOLING WATER MONITORING AND CONTROL SYSTEM 审中-公开

    公开(公告)号：US20190145722A1

    公开(公告)日：2019-05-16

    申请号：US16185817

    申请日：2018-11-09

    申请人： Ecolab USA Inc.

    发明人： Craig Myers ,  Anupam Prakash ,  Ravindra Raghavapudi ,  Steven Kramarczyk ,  Stephen J. Hinterlong ,  Daniel Meier ,  Jorvic Vital

    IPC分类号： F28G9/00 ,  F28G15/00

    摘要： A method of controlling cooling water treatment may involve measuring operating data of one or more downstream heat exchangers that receive cooling water from the cooling tower. For example, the inlet and outlet temperatures of both the hot and cold streams of a downstream heat exchanger may be measured. Data from the streams passing through the heat exchanger may be used to determine a heat transfer efficiency for the heat exchanger. The heat transfer efficiency can be trended over a period of time and changes in the trend detected to identify cooling water fouling issues. Multiple potential causes of the perceived fouling issues can be evaluated to determine a predicted cause. A chemical additive selected to reduce, eliminate, or otherwise control the cooling water fouling can be controlled based on the predicted cause of the fouling.

    COOLING WATER MONITORING AND CONTROL SYSTEM
    7.
    发明申请
    COOLING WATER MONITORING AND CONTROL SYSTEM 审中-公开

    公开(公告)号：US20190084841A1

    公开(公告)日：2019-03-21

    申请号：US16130237

    申请日：2018-09-13

    申请人： Ecolab USA Inc.

    发明人： Anupam Prakash ,  Stephen J. Hinterlong ,  Hung-Ting Chen ,  Craig Myers ,  Walter H. Goodman ,  Daniel Meier

    IPC分类号： C02F1/00 ,  F28F27/00 ,  C02F1/50 ,  C02F1/66

    摘要： A method of controlling cooling water treatment at a cooling tower may involve measuring operating data of one or more downstream heat exchangers that receive cooling water from the cooling tower. For example, the inlet and outlet temperatures of both the hot and cold streams of a downstream heat exchanger may be measured, optionally along with a flow rate of the cooling water stream passing through the heat exchanger. Data from the streams passing through the heat exchanger may be used to determine a heat transfer efficiency for the heat exchanger. The heat transfer efficiency can be trended over a period of time and changes in the trend detected to identify cooling water fouling issues. A chemical additive selected to reduce, eliminate, or otherwise control the cooling water fouling can be controlled based on the changes in heat transfer efficiency detected at the downstream heat exchanger.