Methods of controlling mercury emission
    21.
    发明授权
    Methods of controlling mercury emission 有权
    控制汞排放的方法

    公开(公告)号:US08632742B2

    公开(公告)日:2014-01-21

    申请号:US13657484

    申请日:2012-10-22

    Applicant: Nalco Company

    Abstract: Disclosed are methods for controlling, mercury emissions, and more particularly, to methods for controlling mercury re-emissions from a wet flue gas desulfurizer used in a combustion process. A method of controlling mercury re-emission from a combustion process includes measuring either mercury concentration, oxidation-reduction, potential (ORP), and/or sulfide concentration within a scrubber liquor of a wet flue gas desulpherizer (wFGD); correlating the mercury concentration, ORP, and /or sulfide concentration with an amount of mercury re-emission additive required in the scrubber liquor to reduce and/or prevent mercury re-emission to a selected level; and adjusting the rate of addition of mercury re-emission additive into the scrubber liquor to attain the selected level of mercury re-emission.

    Abstract translation: 公开了用于控制汞排放的方法,更具体地,涉及用于控制燃烧过程中使用的湿式烟道气脱硫器的汞再排放的方法。 控制来自燃烧过程的汞再排放的方法包括测量湿式烟道气净化器(wFGD)的洗涤液中的汞浓度,氧化还原,电位(ORP)和/或硫化物浓度; 将汞浓度,ORP和/或硫化物浓度与洗涤液中所需的汞再排放添加剂的量相关联,以减少和/或防止汞再排放至选定水平; 并调整汞再发射添加剂加入洗涤液中的速率,以达到选定的汞再排放水平。

    APPARATUS FOR ON-LINE CONTINUOUS CHLORINE ANALYSIS IN TURBID WATER AND PROCESS STREAMS
    24.
    发明申请
    APPARATUS FOR ON-LINE CONTINUOUS CHLORINE ANALYSIS IN TURBID WATER AND PROCESS STREAMS 有权
    涡轮水和过程流中在线连续氯分析的设备

    公开(公告)号:US20130192337A1

    公开(公告)日:2013-08-01

    申请号:US13826144

    申请日:2013-03-14

    Applicant: Nalco Company

    CPC classification number: G01N33/18 G01N33/182

    Abstract: The invention is directed towards methods and apparatus for accurately detecting the presence and concentration of an oxidant in a turbid water sample. This method is very helpful in allowing accurate and efficient (not too much nor too little) amounts of microbe killing oxidants to be introduced to water supplies that require oxidants but which at present cannot be measured properly. The method comprises the steps of: passing the water through at least one filter array, passing the filtered water to an analyzer, and then returning from the analyzer a measurement of the concentration. The filter array comprises at least one filter constructed and arranged to remove turbidity inducing material but not oxidant from the water sample. The analyzer can be a commonly commercially available analyzer that currently cannot accurately measure the oxidant concentration if the water had not been so filtered. This method allows users to apply easily available oxidant measuring technology to applications such as paper mill water where it is needed but was previously was not applicable.

    Abstract translation: 本发明涉及准确地检测浑浊水样品中氧化剂的存在和浓度的方法和设备。 这种方法非常有助于准确和有效(不会太多也不太少)的微生物杀死氧化剂的量被引入需要氧化剂但目前无法适当测量的水源。 该方法包括以下步骤:使水通过至少一个过滤器阵列,将过滤的水通过分析器,然后从分析仪返回浓度的测量值。 过滤器阵列包括至少一个过滤器,其构造和布置成从水样中除去浊度诱导物质而不是氧化剂。 分析仪可以是通常可商购的分析仪,如果水未被过滤,则目前不能精确地测量氧化剂浓度。 该方法允许用户将易于使用的氧化剂测量技术应用于诸如需要但之前不适用的造纸厂水的应用。

    COMPOSITION AND METHOD FOR ENHANCING THE PRODUCTION OF CRYSTAL AGGLOMERATES FROM A PRECIPITATION LIQUOR
    26.
    发明申请
    COMPOSITION AND METHOD FOR ENHANCING THE PRODUCTION OF CRYSTAL AGGLOMERATES FROM A PRECIPITATION LIQUOR 有权
    用于增强沉淀液中生产水晶凝胶的组合物和方法

    公开(公告)号:US20130035405A1

    公开(公告)日:2013-02-07

    申请号:US13645577

    申请日:2012-10-05

    Applicant: Nalco Company

    CPC classification number: C01F7/145 B01D9/005 C01F7/08

    Abstract: The present invention relates to compositions and methods to increase the output of a high quality product from the precipitation liquor crystallization process exemplified through the aluminum hydroxide recovery processes such as the Bayer process. The invention is a method of increasing the size of precipitates from a liquor. The invention in one embodiment relates to the use of a crystal growth modifier compositions added to the precipitation process to increase the particle size distribution of the precipitated alumina trihydrate.

    Abstract translation: 本发明涉及通过氢氧化铝回收方法例如拜耳方法例举的沉淀液结晶方法来提高高质量产品的产量的组合物和方法。 本发明是一种从酒中提高沉淀物的尺寸的方法。 在一个实施方案中的本发明涉及添加到沉淀方法中的晶体生长改性剂组合物用于增加沉淀的三水合氧化铝的粒度分布的用途。

Patent Agency Ranking