Process and Reactor Level Simulations of Coal-Direct Chemical-looping Combustion - Novel Combustion Concepts for Sustainable Energy Development - page 347

t = 80 ms 160 ms 240 ms 320 ms 400 ms 480 ms 560 ms 640 ms 720 ms 800 ms

880 ms 960 ms 1040 ms 1120 ms 1200 ms 1280 ms 1360 ms 1440 ms 1520 ms 1600 ms

Fig. 16 Particle tracks colored by velocity magnitude in the modified complete CD-CLC
configuration

0.7 0.7

0.16

P2

0.16

0.14

0.14

P2

P3

0.6 0.6

P3

0.12

0.12

P 5

0.1 0.1

P5

0.5

0.5

P 1

P4

0.08 0.08

P 4

P1

0.06 0.06

0.4 0.4 9500 10000 10500 11000 11500 2500 3000 3500

0.3

0.3

0.2

0.2

P5

0.1

0.1

P4

P4

P1 P1

P5

0

0

700 1200 1700 2200 2700 3200 3700

700 2700 4700 6700 8700 10700

Static Pressure (Pa)

Static Pressure (Pa)

0.7

0.7

0.16

P2

P2

P3

0.6

P3

0.6

0.11

P 5

P 1

0.5 0.5 P 4

0.06

0.4

0.4

1500 1700 1900 2100 2300

0.3

0.3

0.2

0.2

P5

P5

0.1

0.1

P4

P4

P1

P1

0

0

700 1200 1700 2200 2700

700 900 1100 1300 1500 1700 1900 2100 2300

Static Pressure (Pa)

Static Pressure (Pa)

Fig. 17 Static pressure at pressure taps P1

- P5att = 400 ms (upper left), 800 ms (upper right),
1200 ms (lower left), and 1600 ms (lower right) in the modi ed complete CD-CLC con guration

Comparing Fig. 17 to Fig. 14 , i.e., the static pressures at P1

- P5 in the modi

ed

and original CD-CLC con gurations, respectively, it is clear that the pressure

difference between the downcomer and the

fl fluidized bed (P4 - P1) has increased by