Table 1. Proximate Analysis and Element Analysis of Five Coal Samplesa.
| sample name | Ro% | Mad | Ad% | St,d % | Odaf% | Cdaf% | Hdaf% | Ndaf% |
|---|---|---|---|---|---|---|---|---|
| XJ-1 | 0.39 | 9.54 | 7.03 | 0.72 | 20.56 | 72.60 | 4.80 | 1.26 |
| GZ-2 | 1.23 | 1.02 | 30.39 | 0.91 | 6.94 | 85.30 | 5.05 | 1.41 |
| SX-3 | 2.07 | 0.92 | 22.00 | 0.32 | 6.87 | 87.37 | 4.11 | 1.23 |
| SX-4 | 2.43 | 1.14 | 6.98 | 0.47 | 4.71 | 89.70 | 3.78 | 1.30 |
| LC-5 | 2.47 | 1.92 | 6.25 | 1.05 | 4.22 | 90.60 | 2.96 | 1.10 |
a
Ro: vitrinite reflectance; Mad: moisture, air dry; Ad: ash, dry; St,d: total sulfur; Odaf: oxygen, dry and ash free; Cdaf: carbon, dry and ash free; Hdaf: hydrogen, dry and ash free; Ndaf: nitrogen, dry and ash free.