case

1

2

3

4

CH4 Re-combustion ratio (γ/%)

0

7.5

10

12.5

Coal mass flow (B0/kg·s−1)

3.09

2.86

2.78

2.70

Primary air speed (v1/m·s−1)

25.45

25.13

25.04

24.94

Secondary air speed (v2/m·s−1)

57.67

48.67

47.09

45.50

Separated over fire air speed (vSOFA/m·s−1)

50.91

50.32

50.12

49.93

Re-combustion methane speed (vCH4/m·s−1)

0

27.90

37.20

46.50

CH4 volume flow (VCH4/m3·s−1)

0

2.86

3.82

4.77

Re-combustion air speed (vr-c,air/m·s−1)

0

31.35

41.80

52.25