smurfit kappa kraftliner etc bioenergy laboratory … · the etc bioenergy laboratory chemrec dp1...
TRANSCRIPT
The ETC Bioenergy Laboratory
Chemrec
DP1
Smurfit Kappa
Kraftliner
ETC Bioenergy
Laboratory
Energy Technology Centre1
1
Solander Science
Park (2nd floor)
Pre- treatment of biomass
Henry HedmanEnergitekniskt Centrum
HighBio seminar 2009-05-12 Luleå, Sweden
Energy Technology Centre2
AGENDA
• Why pre-tretment of biomass• Charactarization of biomass• Different applications and technologies• Torrefaction, hammermills• Futher work
Energy Technology Centre3
Why pre-tretment of biomass
• Making a homogenius feedstook, size, form,,,• Changing structure in wood, hemicellulosa,
celluloosa, hydrophobe• Different applications combustion or gasification• Higher pressure, different levels of oxidant• Feeding systems, powder, slurry• Different gasification processes
Energy Technology Centre4
• Different gasification processes - Slagging, (needs additives)- Non- slagging
Technologies in Highbio project
• Systems for feeding biomass to high pressures- Powder form, lockhoppers- Slurry, pump systems
1 Torrefaction process2 New type of milling process shearing (patented)
compared to traditional hammer mill
Energy Technology Centre5
2 New type of milling process shearing (patented) compared to traditional hammer mill
3 Pyrolysis oil
Methods to characterize biomass
• Moisture content, ash content, density• Particle size distribution• Particle form, microscope• Valuting, bridging• Chemical analyzis• Combustion tests measuring deposits, slagg,
gasues, dust and particles
Energy Technology Centre6
• Combustion tests measuring deposits, slagg, gasues, dust and particles
Light microscope
Bark (pellets) after milling Stem wood (pellets) after milling
Energy Technology Centre7
Bark (pellets) after milling Stem wood (pellets) after milling
Dry wood chips after milling
Valut and bridging
Energy Technology Centre8
Flowability test
Feeding and combustion tests
Energy Technology Centre9
Torrefaction
• Breaking the wood structure regarding to decomposition
• Hemicellulosa, volotiles mainly acetic acid and water small amounts of methanol, acetone and fenol
• Making a hydrophobe product• Slurry pump technology
Energy Technology Centre10
• Slurry pump technology• Low milling energy
Torrefaction
• Around 30 scientific papers about torrefaction• A gap between current litterature regarding
combustion properties of torrefact material (Bridgman 2007)
• Comersial processes long ago • New plants in Ö-vik ”BioEndev” in Sweden 2010• Also a new plant in Holland
Energy Technology Centre11
• Also a new plant in Holland
Torrefaction stages
Energy Technology Centre12
Mass and energy balance
Torrefaction gases 0.3M |
Energy Technology Centre13
Torrefaction
250-300°C
Torrefied Biomass
0.7M | 0.9E 1M | 1E
Milling electric power consumption
Energy Technology Centre14
Hammer mill
60
80
100
120
En
erg
y c
on
su
mp
tio
n (
kW
/to
n)
Energy consumption (kW/ton)
Energy Technology Centre15
0
20
40
60
Bark Dry wood chips Stem wood pellets Torrefaction
Fuel type
En
erg
y c
on
su
mp
tio
n (
kW
/to
n)
Energy consumption (kW/ton)
Slurry feeding
Pump system
Energy Technology Centre16
Wood powder + water around 22 % biomassWood powder + vegetable oil around 27 % biomassWood powder + Methanol around 30 % biomass
Coal powder + water around 78 % biomass
Mix of wood and coal in not better!!!!
Slurry trials
Energy Technology Centre17
Trials with torrefacted material will be performed soon at ETC
Further work
• Torrefaction studies literature and lab trials slurry pumping
• Rotary valves and lock hoppers in lab• Using of different biomass feed stocks
(autumn 2009) using additives• New technology regarding milling (shearing)
Energy Technology Centre18
• New technology regarding milling (shearing)• Pyrolysis oil