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    Sensor technique for black liquor oxidation control
    1.
    发明授权
    Sensor technique for black liquor oxidation control 有权
    用于黑液氧化控制的传感器技术

    公开(公告)号：US08009277B2

    公开(公告)日：2011-08-30

    申请号：US12290122

    申请日：2008-10-27

    申请人： Xin-Sheng Chai ,  Christopher L. Verrill

    发明人： Xin-Sheng Chai ,  Christopher L. Verrill

    IPC分类号： G01N21/01 ,  G01N21/33 ,  D21C7/12

    CPC分类号： G01N21/33 ,  G01N21/05 ,  G01N21/552

    摘要： A method for determining simultaneously from an oxidized black liquor sample an amount of sulfide, an amount of total dissolved solids, and an amount of effective alkali present in the sample, wherein the sulfide amount, the total dissolved solids amount, and the effective alkali amount are determined by subjecting the sample to attenuated total reflection (ATR) ultraviolet/visible (UV/V) spectroscopy over a wavelength of from about 190 to about 500 nm. Data from analyzing oxidized black liquor samples, and from analyzing one or more black liquor samples which may be subjected to black oxidation, may be used in a black liquor oxidation (BLOX) system for monitoring and/or controlling sulfur emissions from a kraft process.

    摘要翻译： 一种从氧化黑液样品同时测定硫化物的量，总溶解固体的量和样品中存在的有效碱的量的方法，其中硫化物量，总溶解固体量和有效碱量 通过在约190至约500nm的波长下对样品进行衰减全反射（ATR）紫外/可见光（UV / V）光谱测定。 来自分析氧化黑液样品和分析一种或多种可能进行黑色氧化的黑液样品的数据可用于黑液氧化（BLOX）系统中，用于监测和/或控制来自硫酸盐法的硫排放。

    Method for rapidly determining a pulp kappa number using spectrophotometry
    2.
    发明授权
    Method for rapidly determining a pulp kappa number using spectrophotometry 失效
    使用分光光度法快速测定纸浆卡伯值的方法

    公开(公告)号：US06475339B1

    公开(公告)日：2002-11-05

    申请号：US09586324

    申请日：2000-06-02

    申请人： Xin-Sheng Chai ,  Jun Yong Zhu

    发明人： Xin-Sheng Chai ,  Jun Yong Zhu

    IPC分类号： D21C712

    CPC分类号： D21C3/228

    摘要： A system and method for rapidly determining the pulp kappa number through direct measurement of the potassium permanganate concentration in a pulp-permanganate solution using spectrophotometry. Specifically, the present invention uses strong acidification to carry out the pulp-permanganate oxidation reaction in the pulp-permanganate solution to prevent the precipitation of manganese dioxide (MnO2). Consequently, spectral interference from the precipitated MnO2 is eliminated and the oxidation reaction becomes dominant. The spectral intensity of the oxidation reaction is then analyzed to determine the pulp kappa number.

    摘要翻译： 通过使用分光光度法直接测定高锰酸钾溶液中的高锰酸钾浓度来快速测定纸浆卡伯值的系统和方法。 具体地，本发明使用强酸化在纸浆高锰酸盐溶液中进行纸浆高锰酸盐氧化反应，以防止二氧化锰（MnO 2）的沉淀。 因此，消除了来自沉淀的MnO 2的光谱干扰，氧化反应成为主导的。 然后分析氧化反应的光谱强度以确定纸浆卡伯值。

    Simultaneous and rapid determination of multiple component concentrations in a Kraft liquor process stream
    3.
    发明授权
    Simultaneous and rapid determination of multiple component concentrations in a Kraft liquor process stream 失效
    在牛皮纸浆工艺流中同时快速测定多种成分浓度

    公开(公告)号：US07390669B2

    公开(公告)日：2008-06-24

    申请号：US10999912

    申请日：2004-11-30

    申请人： Jian Li ,  Xin Sheng Chai ,  Junyoung Zhu

    发明人： Jian Li ,  Xin Sheng Chai ,  Junyoung Zhu

    IPC分类号： G01N21/01 ,  G01N33/34 ,  D21C7/12

    CPC分类号： G01N33/343 ,  G01N21/33 ,  G01N21/552 ,  G01N21/85 ,  Y10T436/15 ,  Y10T436/156666 ,  Y10T436/184 ,  Y10T436/203332 ,  Y10T436/204998

    摘要： The present invention is a rapid method of determining the concentration of the major components in a chemical stream. The present invention is also a simple, low cost, device of determining the in-situ concentration of the major components in a chemical stream. In particular, the present invention provides a useful method for simultaneously determining the concentrations of sodium hydroxide, sodium sulfide and sodium carbonate in aqueous kraft pulping liquors through use of an attenuated total reflectance (ATR) tunnel flow cell or optical probe capable of producing a ultraviolet absorbency spectrum over a wavelength of 190 to 300 nm. In addition, the present invention eliminates the need for manual sampling and dilution previously required to generate analyzable samples. The inventive method can be used in Kraft pulping operations to control white liquor causticizing efficiency, sulfate reduction efficiency in green liquor, oxidation efficiency for oxidized white liquor and the active and effective alkali charge to kraft pulping operations.

    摘要翻译： 本发明是确定化学物流中主要成分浓度的快速方法。 本发明也是简单，低成本的确定化学物流中主要成分的原位浓度的装置。 特别地，本发明提供了一种用于通过使用能够产生紫外线的衰减全反射（ATR）隧道流动池或光学探针同时测定水溶液硫酸盐制浆液中的氢氧化钠，硫化钠和碳酸钠的浓度的有用方法 在190至300nm的波长下的吸收光谱。 此外，本发明消除了以前为生成可分析样品而需要手动取样和稀释的需要。 本发明的方法可用于硫酸盐法制浆操作，以控制白液苛化效率，绿液中的硫酸盐还原效率，氧化白液的氧化效率和对硫酸盐制浆操作的有效和有效的碱电荷。

    Sensor technique for black liquor oxidation control
    5.
    发明申请
    Sensor technique for black liquor oxidation control 有权
    用于黑液氧化控制的传感器技术

    公开(公告)号：US20090122307A1

    公开(公告)日：2009-05-14

    申请号：US12290122

    申请日：2008-10-27

    申请人： Xin-Sheng Chai ,  Christopher L. Verrill

    发明人： Xin-Sheng Chai ,  Christopher L. Verrill

    IPC分类号： G01J3/00 ,  G01R35/00

    CPC分类号： G01N21/33 ,  G01N21/05 ,  G01N21/552

    摘要： A method for determining simultaneously from an oxidized black liquor sample an amount of sulfide, an amount of total dissolved solids, and an amount of effective alkali present in the sample, wherein the sulfide amount, the total dissolved solids amount, and the effective alkali amount are determined by subjecting the sample to attenuated total reflection (ATR) ultraviolet/visible (UV/V) spectroscopy over a wavelength of from about 190 to about 500 nm. Data from analyzing oxidized black liquor samples, and from analyzing one or more black liquor samples which may be subjected to black oxidation, may be used in a black liquor oxidation (BLOX) system for monitoring and/or controlling sulfur emissions from a kraft process.

    摘要翻译： 一种从氧化黑液样品同时测定硫化物的量，总溶解固体的量和样品中存在的有效碱的量的方法，其中硫化物量，总溶解固体量和有效碱量 通过在约190至约500nm的波长下对样品进行衰减全反射（ATR）紫外/可见（UV / V）光谱测定。 来自分析氧化黑液样品和分析一种或多种可能进行黑色氧化的黑液样品的数据可用于黑液氧化（BLOX）系统中，用于监测和/或控制来自硫酸盐法的硫排放。