8/13/2019 20_BERGUERAND

1/10

Energy and Environment

and Environment

in a 10 kWth

Pilot

! "# "$

%$#

8/13/2019 20_BERGUERAND

2/10

Energy and Environment

'

()'(*

()(*

+,#

+,#

'

),*

,

-,

)*

Reduction

Oxidation

MexOy-1+1/2 O2 MexOy (1)

MexOy+ CO/H2 MexOy-1+ CO2/H2O (4)

MexOy+ volatiles MexOy-1+CO2+H2O (2)

C + H2O CO + H2 (3)

8/13/2019 20_BERGUERAND

3/10

8/13/2019 20_BERGUERAND

4/10

LOVEL

4 4

CS

Windboxes

BedLevelto

AR

from

cyclonefrom

FR cyclone

to

FR cyclone

2

188 mm

273mm

36.6 mm

227mm

Energy and Environment

( #

01 $2

3 $ $

8/13/2019 20_BERGUERAND

5/10

Energy and Environment

"+ 4 5 ,

,+# 1 6 + &,7

1 )* . + ) 6 3 *)* ' ) $6 6 $#*

51 6 (

1 3 ) *

8/13/2019 20_BERGUERAND

6/10

Energy and Environment

! "$ 4 8# 5

'( (

+,#

6'(6%"

6(6OD

'

+,#

)*

9

ARCFRC

FRC

CC

FF

F

,,

,

+=

# #

: $1 +#

),6 -6 -;6 -*

< +# 9+# =OD

+ )0*1 =$ 3 '(9(

0 $

8/13/2019 20_BERGUERAND

7/10

( ,

# $

. >6 +# #

3 >?

: $ >?6 - +

@ >? +#

Energy and Environment

8/13/2019 20_BERGUERAND

8/10

Energy and Environment

0 0.2 0.4 0.6 0.8 1Fuel conversion (-)

0

0.2

0.4

0.6

Instantaneousrateo

fconversion(-/min)

0

0.2

0.4

0.6

1000C

950C

980C

970C

1030C

0 ( &

.>

8/13/2019 20_BERGUERAND

9/10

Energy and Environment

O2,AR(t = 0) - O2,AR(t) ~ tN-1.e-t/(/N)

( 4 ( &

CI

)58(1178

=

CIm

m =1178

(

5

(

0 ).5B9* 7; A ; >C

)* BA B> 7 7 7

)* 7>B> ;B7 BC AB >B

(CI=141)

8/13/2019 20_BERGUERAND

10/10

Energy and Environment

#

The particle circulation had a beneficial effect on the conversion of syngas

Higher temperature had a beneficial effect on the rate of char conversion

The volatiles account for 75% of the total demand of oxygen. This is causedby fuel addition system, giving a volatiles release above the bed

It was possible to model the system and derive a correlation betweenmeasured operational data and actual circulation mass flow

From modelling, the carbon capture of the system vs. the residence timecould be obtained and compared to experimental expressions. The twoapproaches showed good agreement