Case 3 --- Kukersite

 

 

For some materials, although a discrete distribution of activation energies gives the best fit for pyrolysis data, a reasonably good fit can be obtained with a much simple model; namely a single 1st-order reaction or a single nth-order reaction.  Pyrolysis data for Estonian Kukersite is a prime example of this.

In this example, we use Pyromat data measured for Kukersite [Alan K. Burnham and Robert L. Braun, ''Global Kinetics Analysis of Complex Materials'', Energy & Fuels, Vol. 13, No. 1, pp. 1-22, 1999].

Also, for comparison, we use Pyromat data measured for Monterey Shale, a more typical material that does not follow a single 1st-order reaction well [John G. Reynolds, Alan K. Burnham, and Thomas O. Mitchell, ''Kinetic analysis of California petroleum source rocks by programmed temperature pyrolysis'', Org. Geochem. Vol. 23, No. 2, pp. 109-120, 1995].

The files used in Case 3 for both Kukersite and Monterey can be downloaded as: kukersite.zip.  All included files are text files and should be extracted to a user data folder that is not a subfolder of C:\Program Files.

Pyrolysis data

 

Kukersite

KUKE01AD.dat         Nominal heating rate of 1 C/min

KUKE07AD.dat         Nominal heating rate of 7 C/min

KUKE50AD.dat         Nominal heating rate of 50 C/min

 

 

Monterey

TM0301AA.dat         Nominal heating rate of 1 C/min

TM0307AA.dat         Nominal heating rate of 7 C/min

TM0350AB.dat         Nominal heating rate of 50 C/min

 

Single 1st-order reaction

 

Kukersite

KUKE-A.con            Command file

KUKE-A.out             Output file

KUKE-A.dup.out       Duplicate of output file

 

Monterey

TM03-A2.con          Command file

TM03-A2.out           Output file

TM03-A2.dup.out     Duplicate of output file

 

Single nth-order reaction

 

Kukersite

KUKE-B.con            Command file

KUKE-B.out             Output file

KUKE-B.dup.out       Duplicate of output file

 

Monterey

TM03-B2.con          Command file

TM03-B2.out           Output file

TM03-B2.dup.out     Duplicate of output file

 

Discrete model (single frequency factor and discrete E-distribution)

 

Kukersite

KUKE-C.con            Command file

KUKE-C.out             Output file

KUKE-C.dup.out       Duplicate of output file

 

Monterey

TM03-C2.con          Command file

TM03-C2.out           Output file

TM03-C2.dup.out     Duplicate of output file