Research Article

Evaluation of Thermal Evolution Profiles and Estimation of Kinetic Parameters for Pyrolysis of Coal/Corn Stover Blends Using Thermogravimetric Analysis

Table 3

Obtained pyrolysis kinetic parameters, temperature, and conversion ranges for all types of feedstock at a heating rate of 5°C/min.

Feedstock materialsTemperature °CConversion range, %Activation energy , KJ/molArrhenius constant, min−1Correlation coefficient,

DECS-38 subbituminous coal (SB)143–3602–1628.13 0.9828
360–46016–53149.03 0.9984
460–83753–9838.98 0.9616

DECS-25 lignite coal (LG)175–2812–956.96 0.9973
281–4579–5578.15 0.9948
457–79155–9741.75 0.9909

Corn stover (CS)136–3503–77103.67 0.9820
350–49777–9272.13 0.9846

10% CS + 90% SB175–2671–567.90 0.9886
267–3875–2582.47 0.9907
387–46725–57179.16 0.9905
467–78757–9725.69 0.9785

20% CS + 80% SB150–2441–557.39 0.9984
244–3605–38107.69 0.9893
360–49638–75107.07 0.9913
496–84375–9745.85 0.9814

30% CS + 70% SB166–2311–597.16 0.9912
231–3325–4389.99 0.9891
332–55043–8655.26 0.9934
550–85486–9760.27 0.9874

10% CS + 90% LG156–2651–753.61 0.9915
265–3387–22138.82 0.9967
338–45120–53100.42 0.9921
451–85353–9828.71 0.9895

20% CS + 80% LG156–2242–664.59 0.9905
224–3086–18126.01 0.9927
308–43718–6196.90 0.9892
437–83561–9730.37 0.9872

30% CS + 70% LG171–2451–587.10 0.9889
245–3425–4599.15 0.9933
342–45545–7193.14 0.9888
455–88071–9834.98 0.9790