公开(公告)号：EP0489748B1

公开(公告)日：1993-09-08

申请号：EP90911386.2

申请日：1990-07-20

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N21/35

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829

摘要： The near infrared absorbance of the methyne band measures octane (pump, RON, and MON) with excellent correlation and can be used for gasoline blending. The absorbance may be measured as the first, second, third, fourth or higher derivative or by other signal processing techniques. The signal can be used to control a multi-component gasoline blending system to produce a preset desired octane. Such continuous or frequent measurement of octane (research octane number, RON; motor octane number, MON; and pump octane number (research plus motor times 0.5)) permits constant or frequent optimization of gasoline blending to produce a target octane which is sufficient to meet motorists' needs, yet uses minimum amounts of the more expensive high octane blending stocks.

公开(公告)号：EP0995107A1

公开(公告)日：2000-04-26

申请号：EP97933509.8

申请日：1997-07-09

申请人： ASHLAND OIL, INC.

发明人： WELCH, William, T. ,  SUMNER, Michael, B. ,  WILT, Brian, K. ,  BLEDSOE, Roy, Roger ,  MAGGARD, Steven, M.

IPC分类号： G01N21/35 ,  G01N33/22

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829

摘要： Hydrocarbon pieces, including preferably aromatic species such as benzene, toluene, xylene, and alkyl benzenes such as ethyl benzene, can be determined by measuring absorption in certain selected wavelengths in the infrared spectra, then manipulating the data, e.g., preferably by taking the first or higher derivative, and applying statistical techniques, preferably multiple linear regression (MLR) to provide an output signal indicative of the concentration of the particular specie. The output signal can be used to control refinery and chemical processes, e.g., gasoline blending, reforming, catalytic cracking, alkylation and isomerization.

公开(公告)号：EP0642660A1

公开(公告)日：1995-03-15

申请号：EP93905908.0

申请日：1993-02-12

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N21 ,  G01N33

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829

摘要： This invention discloses an improved method for determining both oxygenate content and octane of hydrocarbon fuels suitable for automotive vehicles. It has been discovered possible by selecting nanometer frequencies in the range 1,300 to 1,350 to reduce the temperature dependence of calibration equations that predict values representative of both oxygenate content and octane by using only derivatives of selected temperature-dependent frequencies in addition to those in the 1,300 to 1,350 nanometers range. The selected frequencies primarily correspond to C-H vibrational modes.

公开(公告)号：EP0663997B1

公开(公告)日：1996-05-29

申请号：EP92922726.2

申请日：1992-10-07

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N21/27 ,  G01D18/00

CPC分类号： G01N21/274

摘要： A calibrated spectrometer can indirectly determine a physical or chemical property of a sample based upon spectral responses measured by the spectrometer with respect to the particular sample. This invention is directed to a method for calibrating or recalibrating a second spectrometer in light of a first spectrometer, or itself, respectively. The calibration employs a unique selection and manipulation of spectral data obtained from both the first and the second instrument. The recalibration employs a unique selection and manipulation of spectral data from the same first instrument, that is obtained both before and after the need for recalibration arises. Instead of modifiying the respective responses of the first and second instrument, or the first instrument before and after the need for calibration arises, this invention modifies the calibration equation of the second, or recalibrated instrument, to yield consistent results to those obtained by the first instrument, or the first instrument before it goes out of calibration. A calibration equation is an equation which transforms spectral data of a particular sample at a variety of wavelengths to a calculated value for a chemical or physical property. Generally, the form of such calibration equations is that of a linear combination of absorbances or mathematical transforms of absorbances measured by the first and second instrument for each sample. Surprisingly, and confirmed statistically, the accuracy of the calibrated or recalibrated instrument is maintained and in some instances improved.

公开(公告)号：EP0489748A1

公开(公告)日：1992-06-17

申请号：EP90911386.0

申请日：1990-07-20

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N21 ,  G01N33

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829

摘要： L'absorbance proche de l'infra-rouge de la bande de méthyne mesure l'indice d'octane (pompe, RIO, et IOM) avec une excellente corrélation et peut servir au mélange d'essences. On peut mesurer l'absorbance à la première, la seconde, la troisième, la quatrième dérivée ou plus, ou selon d'autres techniques de traitement de signaux. On peut utiliser le signal pour commander un système de mélange d'essences multi-composants, afin de produire un indice d'octane pré-établi voulu. La mesure continue ou fréquente de l'indice d'octane (recherche de l'indice d'octane, RIO; indice d'octane du moteur, IOM; et indice d'octane à la pompe (recherche plus temps moteur 0,5)) permet une optimisation constante ou fréquente du mélange d'essences afin de produire un indice d'octane cible suffisant pour satisfaire les besoins des automobilistes, et utilisant ds quantités minimum des produits de mélanges d'indice d'octane élevé plus coûteux.

公开(公告)号：EP0489748B2

公开(公告)日：1999-01-13

申请号：EP90911386.2

申请日：1990-07-20

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N21/35

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829

公开(公告)号：EP0717845B1

公开(公告)日：1998-10-14

申请号：EP94915814.1

申请日：1994-04-13

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M. ,  HIGGINBOTHAM, James, H. ,  WALKER, Joseph, H.

IPC分类号： G01N33/28 ,  G01N21/35

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829 ,  Y10T436/21

公开(公告)号：EP0555216A1

公开(公告)日：1993-08-18

申请号：EP91906149.0

申请日：1991-03-05

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N21 ,  G01N33

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829 ,  G01N2201/129

摘要： Certaines longueurs d'ondes séléctionnées dans les spectres de l'infrarouge proche permettent d'analyser le pourcentage en poids, le pourcentage en volume, même le pourcentage molaire de chaque composant d'un mélange carburant, tel que les composants PIANO (paraffine, isoparaffine, aromatiques, naphtalènes et oléfines), ainsi que l'indice d'octane (de préférence l'indice d'octane "recherche", l'indice d'octane moteur ou pompe) et le pourcentage de divers hydrocarbures, tels que les alphaoléfines. L'analyse peut être une analyse quasiment en continu en ligne ou par ligne, ainsi qu'une analyse par lots, notamment dans un laboratoire de commande de qualité. Les données relatives à l'infrarouge proche sont de préférence converties en une seconde dérivée des spectres et en une regréssion linéaire multiple effectuée pour obtenir un model des concentrations des composants PIANO individuels, ainsi que pour prévoir les propriétés physiques des composants du mélange carburant, tel que l'indice d'octane "recherche" du réformat, etc.

公开(公告)号：EP0555216B2

公开(公告)日：2001-01-10

申请号：EP91906149.9

申请日：1991-03-05

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M.

IPC分类号： G01N33/28

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829 ,  G01N2201/129

摘要： Certain selected wavelengths in the near infrared spectra permit analysis of weight percent, volume percent, or even mole percent of each component, e.g. PIANO (paraffin, isoparaffin, aromatic, naphtenes, and olefins), octane (preferably research, motor or pump), and percent of various hydrocarbons, e.g. alpha olefins. Analysis can be nearly continuous anlysis on-line or at-line, as well as batch analysis, e.g. in a quality control laboratory. Preferably the NIR data is converted to a second derivative of the spectra and multiple linear regression performed to model the individual PIANO concentrations, and to predict physical properties of fuel blending components, e.g. research octane of reformate, etc.

公开(公告)号：EP0717845A1

公开(公告)日：1996-06-26

申请号：EP94915814.0

申请日：1994-04-13

申请人： ASHLAND OIL, INC.

发明人： MAGGARD, Steven, M. ,  HIGGINBOTHAM, James, H. ,  WALKER, Joseph, H.

IPC分类号： G01N21 ,  G01N33

CPC分类号： G01N21/359 ,  G01N21/3577 ,  G01N33/2829 ,  Y10T436/21

摘要： An NIR sampling system designed to provide a stable gasoline sample stream to an NIR analyzer. Preferred design elements include a temperature-controlled stream moving through an inverted coalescer whereby gas bubbles are removed through an overhead stream. Elevated pressure is used to reduce degassing as well. Two or more prototype fuels can be injected to calibrate the instrument over a range and prove accuracy before and/or after analysis of a sample.