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.