Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-07-23
1998-01-27
Wong, Don
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250343, G01J 502
Patent
active
057124817
ABSTRACT:
In addition to analysis in the infrared spectra of hydrocarbon group types, it has now been found that certain hydrocarbon species, 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., reforming, catalytic cracking, alkylation and isomerization. In manufacturing reformulated fuels, government regulations can be complied with by utilizing the invention to blend fuels which have a maximum of benzene or other regulated components.
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Bledsoe Roy Roger
Maggard Steven M.
Sumner Michael B.
Welch William T.
Wilt Brian K.
Ashland Inc
Stone Richard D.
Willson, Jr. Richard C.
Wong Don
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