Feedstock Densification and Supply Management Incorporating Depots - - PowerPoint PPT Presentation

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Feedstock Densification and Supply Management Incorporating Depots - - PowerPoint PPT Presentation

Mar 19, 2024 435 likes •572 views

Feedstock Densification and Supply Management Incorporating Depots (Storage of Wood Pellets) Fahimeh Yazdanpanah Department of Chemical and Biological Engineering University of British Columbia Biomass and Bioenergy Research Group UBC biomass

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Feedstock Densification and Supply Management Incorporating Depots (Storage of Wood Pellets)

Fahimeh Yazdanpanah

Department of Chemical and Biological Engineering University of British Columbia

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SLIDE 2

Biomass and Bioenergy Research Group

Hammer mill Biomass dryer UBC biomass gasifier Biomass logistics modeling Biomass engineering lab Wood pellet storage Torrefaction

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SLIDE 3

Woody and Herbaceous Pellet Samples

Switchgrass Corn Stover Miscanthus Wheat straw Douglas fir Aspen

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SLIDE 4
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SLIDE 5

 Associated problems and challenges

  • Off-gassing (condensable & non-condensable)
  • Oxygen depletion
  • Self-heating
  • Dust explosion

CO,CO2,CH4 Aldehydes and Ketones, Terpenes, Carboxylic acids Fire happened in a wood pellet silo (Melin, 2008)

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SLIDE 6

½ Inch Diameter Gas Sampling Port (G0-G13)

P0 P1 P2 P3 P4 P5 P6

0.5' 2.5' 4.5' 6.5' 8.5' 10.5' 12.5'

2ft

G13 G12 G11 G10 G9 G8 G7 G6 G5 G4 G3 G2 G1 G0 Pressure Transducers (P0-P6)

1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft

15ft

Thermocouple sensors

P0 P1 P2 P3 P4 P5 P6

0.5' 2.5' 4.5' 6.5' 8.5' 10.5' 12.5'

2ft

Pressure Transducers (P0-P6)

1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft 1ft

15ft

T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22 T23 T24 T25 T26 T27 T28 T29

1ft T

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10 20

3 40

50 6 1.0 1.5

2.0 2.5 3.0 0.5

1.0 1 . 5

2.0 2.5 3.0

3 . 5 4.0

Concentration (%)

H e i g h t ( m ) Time (day)

0.000 0.4000 0.8000 1.200 1.600 2.000 2.400 2.800 3.200 1

20 30

4 50

60 . 2 0.4 . 6 0.8 1 . 1.2 1.4

1.6 1 . 8

0.5 1.0

1.5 2.0

2.5 3 .

3.5 4 .

Concentration (%)

Height (m) Time (days)

0.000 0.2000 0.4000 0.6000 0.8000 1.000 1.200 1.400 1.600 1.800 2.000

10 20

3 40

50 60

0.02 0.04 0.06 . 8 . 1

0.12 . 1 4 0.16

0.5 1.0

1 . 5 2.0

2.5 3.0 3 . 5

4.0

Concentration (%)

H e i g h t ( m ) Time (day)

0.000 0.02000 0.04000 0.06000 0.08000 0.1000 0.1200 0.1400 10 2

3 40 50

60

  • 15
  • 10
  • 5

5 10 1 5 2 . 5

1 . 1 . 5

2 . 2.5 3 .

3.5 4 .

C

  • n

c e n t r a t i

  • n

( % )

H e i g h t ( m )

Time (days)

0.000 2.000 4.000 6.000 8.000 10.00 12.00 14.00 16.00 18.00 20.00

3D ANALYSIS OF LONGITUDINAL DISTRIBUTION OF OXYGEN

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1.6 2.0 2.4 1.2 2.8 1.6 2.8 2.8 2.0 2.4 1.6 2.0

10 20 30 40 50 60 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Time (day)

Height (m)

0.0 0.40 0.80 1.2 1.6 2.0 2.4 2.8 3.2

0.80 1.0 1.2 1.4 1.6 1.6 0.60 0.80 1.2 1.6 1.4

10 20 30 40 50 60 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Time (days) Height (m)

0.0 0.20 0.40 0.60 0.80 1.0 1.2 1.4 1.6 1.8 2.0 0.060 0.080 0.10 0.12 0.14 0.040 0.14 0.10

10 20 30 40 50 60 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Time (day) Height (m)

0.0 0.020 0.040 0.060 0.080 0.10 0.12 0.14

18 16 14 12 10 8.0 6.0 4.0 2.0 2.0 0.0 4.0 0.0 0.0 4.0 0.0 4.0 0.0 0.0 20 0.0 20 2.0 4.0 2.0 4.0 4.0 0.0 4.0

10 20 30 40 50 60 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Time (days) Height (m)

0.0 2.0 4.0 6.0 8.0 10 12 14 16 18 20

20.5 21.2 21.9 22.6 21.2 21.9 19.8 21.2 21.9 23.3 19.1 19.8 19.8 22.6 18.4 21.9

10 20 30 40 50 60 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Time (day) Height (m)

17.0 17.7 18.4 19.1 19.8 20.5 21.2 21.9 22.6 23.3 24.0 24.7

TEMPERATURE EFFECT ON OXYGEN DEPLETION

25.0 26.0 27.0 27.0 28.0 29.0 30.0 28.0 31.0 31.0 26.0 32.0 30.0 32.0 30.0 29.0 25.0 30.0 32.0

10 20 30 40 50 60 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Time (day) Height (m)

23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0

CO2 Concentration CH4 Concentration CO Concentration O2 Concentration Temperature (C1M) Relative Humidity (C1M)

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SMALL SCALE EXPERI MENTS

  • Temperature, moisture, oxygen availability (creating oxygen free

environment), relative humidity, storage duration

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SUMMARY

  • Research that would result in supply of high quality pellets at a competitive price

would be a key to developing and maintaining new export and domestic markets for Canadian produced wood pellets.

  • The Canadian forest industry will be the primary beneficiary of this research. The

benefit will be through lessening the potential for economic loss either in materials or in un-intentional harm to people who work with wood pellets.

  • Need to develop mathematical relations to represent forced and natural

ventilation processes with respect to bed porosity, temperature and relative humidity for storages. Further study is needed to implement the first automated ventilation system.

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BiofuelNet Wood Pellets Association Canada (WPAC) Natural Sciences and Engineering Research council of Canada (NSERC) Premium Pellet Ltd. and Fibreco Export Inc. OPI Integris Biomass and Bioenergy Research Group

Acknowledgements

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Thank You