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Synopsis : The method for estimating exposured temperature of coke by laser Raman spectrometry with multi-channel detector has been developed. The procedure is as follows. 1) The Raman spectra of coke (1300•`1650 cm-1) are measured by a multi-channel laser Raman spectrometer. 2) The spectra are analyzed by lorentzian fitting continuously and the intensity ratio of peaks (R-value, I. 1360 cm 1 / L 1 580 cm 1) is calculated automatically. 3) The histogram of R-values is drawn up. The advantage of this method compared with the powder X-ray diffraction method, which has been used until now, is as follows. 1) The sample preparation, for example, crushing, de-ashing and forming, is not needed. 2) The measuring time (3 min) is much shorter than that of the previous method (30•`40 min). 3) The estimating the temperature of each particle can be measured although the avarage estimating temperature of particles was measured by previous method. This method makes it possible for the first time to estimate the exposured temperature of coke in details, for example, estimating the exposured temperature distribution of every coke particle in a certain range.

Method for Estimating Exposured Temperature of Coke by Laser Raman Spectrometry