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公开(公告)号：US5490085A
公开(公告)日：1996-02-06
申请号：US483568
申请日：1995-06-06
申请人： Didier C. Lambert , Andre Martens
发明人： Didier C. Lambert , Andre Martens
CPC分类号： G01N33/2829 , G01N21/3577 , G01N21/359
摘要： The octane number of a product is directly determined from its near infrared (NIR) absorption spectrum in the wave number spectral range of from 6667 to 3840 centimeter .sup.-1. A number (n) of frequencies is selected within this range, and the (n) absorbance values are correlated with the octane number by using a multivariate regression analysis.
摘要翻译： 产物的辛烷值直接由其在6667至3840厘米-1的波数光谱范围内的近红外（NIR）吸收光谱确定。 在该范围内选择频率数（n），使用多元回归分析将（n）吸光度值与辛烷值相关。
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2.发明授权
公开(公告)号：US5475612A
公开(公告)日：1995-12-12
申请号：US206250
申请日：1994-03-04
CPC分类号： G01N33/2829 , G01N21/3577 , G01N21/359 , F02B3/06
摘要： The properties of a liquid hydrocarbon blend are determined from the NIR (Near Infra Red) spectrum of the components of the blend. This is accomplished by: (a) determining with an IR spectrometer, the absorbance of the components of the blend at a certain number of frequencies in the spectral range 16667 to 3840 cm.sup.-1 starting from a defined base line, (b) determining for each component and each property, a spectral mixture index (SMI) by applying a correlation between the SMI and the absorbance values, and then (c) calculating the property (J) to be determined by applying a linear expression, J=f.sub.a SMI.sub.a.sup.J +f.sub.s SMI.sub.b.sup.J +f.sub.c SMI.sub.c.sup.J + . . . f.sub.o SMI.sub.o.sup.J where SMI.sup.J.sub.(a, b, c . . . ) is the Spectral Mixture Index for property J for each component (a, b, c . . . ) and f.sub.(a, b, c . . . ) is the fraction by volume of that component in the final blend. The correlation in (b) is determined experimentally by multivariate regression, and is dependent upon the type of spectrometer used, the property to be determined, and the frequencies used.
摘要翻译： 液体烃共混物的性质由共混物组分的NIR（近红外线）光谱测定。 这通过以下方式实现：（a）使用IR光谱仪测定在从定义的基线开始的16667至3840cm-1的光谱范围内的特定频率处的共混物的组分的吸光度，（b）确定 通过应用SMI和吸光度值之间的相关性，然后（c）计算通过应用线性表达式确定的性质（J），每个组分和每个性质，光谱混合指数（SMI），J = faSMIaJ + fsSMIbJ + fcSMIcJ +。 。 。 其中SMIJ（a，b，c。）是每个组分（a，b，c。）的性质J的光谱混合指数，f（a，b，c。）是分数 最终混合物中该组分的体积。 （b）中的相关性通过多元回归实验确定，并且取决于所使用的光谱仪的类型，要确定的性质和使用的频率。
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3.发明授权Method and apparatus for determining a property or yield of a hydrocarbon product based on NIRA of the feedstock 失效基于原料的NIRA确定烃产物的性质或产率的方法和装置
公开(公告)号：US5452232A
公开(公告)日：1995-09-19
申请号：US357047
申请日：1994-12-13
CPC分类号： G01N21/359 , G01N21/3577 , G01N33/2829
摘要： The properties and yield of a product from a hydrocarbon conversion or separation process may be determined from the NIR (Near Infrared) spectrum of the feedstock. This is accomplished by: (a) determining with an IR spectrometer the absorbance of the feedstock at a certain number of frequencies in the spectral range 16667 to 3840 cm.sup.-1 starting from a defined base line, and then (b) determining the property or yield by applying a correlation between the property or yield and the absorbance values. The correlation is determined experimentally by multivariate regression and is dependent upon the type of spectrometer employed, the property or yield to be determined, and the frequencies used.
摘要翻译： 来自烃转化或分离过程的产物的性质和产率可以从原料的近红外（近红外）光谱确定。 这是通过以下方式实现的：（a）使用IR光谱仪确定在从定义的基线开始的光谱范围16667至3840cm -1中的一定数量的频率处的原料的吸光度，然后（b）确定属性或 通过应用性质或产率与吸光度值之间的相关性得到产率。 相关性通过多变量回归实验确定，并且取决于所使用的光谱仪的类型，要确定的性质或产量以及所使用的频率。
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4.发明授权Method and apparatus for determining the flocculation threshold of a petroleum product 失效用于确定石油产品的絮凝阈值的方法和装置
公开(公告)号：US4940900A
公开(公告)日：1990-07-10
申请号：US233196
申请日：1988-08-17
申请人： Didier C. Lambert
发明人： Didier C. Lambert
CPC分类号： G01N33/2835 , G01N21/3577 , G01N21/359
摘要： The flocculation threshold of a petroleum product containing asphaltenes is measured by measuring the radiation in the near infrared transmitted through a sample of the product in solution in a solvent in relation to the quantity of precipitant continuously added to the sample.
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