Index numbers from simulated cracking

The data from the simulated cracking process may also be assembled in groups. Statistical evaluation of the groups A vacuum residues and bitumens (samples 1-13), B atmospheric residues (samples 14-17), and C products from conversion processes which can be cracked under the given experimental conditions (samples 19-22) is shown in table 4-34  

For the samples which demonstrate two maxima, or a shoulder and a maximum, the values found for each of the reactions are relatively low. The measured data are by definition related to the initial sample weight, and are therefore interdependent (Table 4-35)  

The sum of DTGy + DTGj, (x = 71.10) is now of the order of magnitude of the DTG, values of bitumens and vacuum residues which have only one crack maximum. 

2 Correlation of index numbers from simulated cracking with analytical data 

The coefficients of correlation are high enough to confirm the general trend. 

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