Technology



“[In the US] fully-developed pulp mill biorefinery industry could be double or more the [production] size of the current corn-ethanol industry.” – Eric Larson, Princeton University/DOE study

 
With the Chemrec technology, the global production potential for biofuels is on the order of 225 million barrels oil equivalent per year, and grows with the pulp industry by about 2% each year. At $20 billion annual fuel revenues today, this represents greater than 1/3 of total pulp industry revenues. Thus, the potential of the Chemrec Biorefinery offers a step-change in results to the pulp and paper industry.

 

Low carbon footprint


A recent CONCAWE/EUCAR study reviewed the carbon footprint of a variety of bio- and fossil fuels. Chemrec’s biofuels clearly stand out in the study, with all of the various potential fuel products reducing overall footprint by greater than 90 percent. With the additional benefit of not competing for food or agricultural land, Chemrec biofuels are a true leader in the move to sustainable mobility.

 

Intellectual Property


Chemrec has a broad patent portfolio protecting our technology globally. We hold more than a hundred patents across 26 patent families covering gasification, gas cleaning and pulp mill integration aspects. We innovate and constantly strive to add patents protecting a wide range of aspects of our technology.
 
 

Our gasifier products


A300 Booster

The 150-300 tons/day atmospheric air-blown unit increases pulp production through improved black liquor recovery capacity and flexibility in chemical recovery. The A300 Booster is installed in parallel with the mill’s existing recovery boiler. A significant benefit of this system is that it can be installed while the recovery boiler continues to operate, thus avoiding down time and lost production.

 


OX450 Booster

The OX450 atmospheric oxygen-blown Booster with capacities up to 450 tons/day not only increases the black liquor recovery capacity but also produces a fuel gas suitable as lime kiln fuel. In this way lime kiln fuel costs and the mill carbon footprint can be significantly reduced.

 


P500 Expansion Unit

The 500-550 tons/day pressurized oxygen-blown unit offers mills additional capacity and increased yield, while producing significant volumes of sustainable, low-carbon biofuels or high heating value fuel gas.

 


P2000 Replacement Unit

The 1000-4000 tons/day pressurized oxygen-blown unit replaces recovery boilers entirely, granting improved pulp yield, while producing significant volumes of sustainable, low-carbon biofuels.

 

 
X2000 Combined Cycle Unit

The 1000-4000 ton/day pressurized unit oxygen-blown replaces recovery boilers entirely, granting improved pulp yield, while doubling “green" power production.




Development milestones

 

The Chemrec gasification concept has been developed in a series of development and demonstration plants. 
 
Atmospheric pilot plant
3 tDS/24h (0.5 MWth)
SKF, Hofors, 1987
 
Booster demonstration plant
75 tDS/24h (11 MWth)
AssiDomän, Frövi, 1991
 
Pressurized air-blown pilot plant
6 tDS/24h (1 MWth)
Stora Enso, Skoghall, 1994
 
Commercial Booster plant
300 tDS/24h (50 MWth)
Weyerhauser, New Bern, 1996
 
Pressurized oxygen-blown rebuilt pilot
10 tDS/24h (1.5 MWth)
Stora Enso, Skoghall, 1997
 
Rebuilt 2nd generation commercial
Booster plant
300 tDS/24h
Weyerhaeuser, New Bern, 2003
 
Pressurized oxygen-blown development plant, DP-1
20 tDS/24h (3 MWth)
Kappa Kraftliner, Piteå, 2005
 
BioDME plant and Volvo BioDME trucks operational, full chain from wood to
wheel demonstrated
Smurfit Kappa Kraftliner, Piteå, 2011