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Chemrec considers US biomass-to-energy sites

Biomass-to-energy company Chemrec is evaluating possible sites in the state of Georgia, US, for developing integrated fuels-from-the-forest black liquor gasification biorefineries at pulp and paper mills.

Chemrec biorefineries transform mills into producers of biofuels or biochemicals or even green electricity and power.

Georgia with more than 24 million acres of forestland, only Oregon in the continental US has more , and its existing pulp and paper mill industry is an ideal candidate for leveraging this technology.

The Chemrec process alters the pulp mill competitive position by adding 30-50% of profitable revenue with typical internal rate of return as high as 25-40%. It also makes needed reinvestment possible by replacing aged recovery boilers experiencing high maintenance costs and low performance. In many cases the fuels plant investment can also be used to provide additional recovery capacity allowing higher pulp production.

Mills producing as little as 500 tonnes of black liquor solids per day are viable as fuels-from-the-forest biorefineries using this method. Most mills are considerably larger. At the minimum capacity size, such a biorefinery mill would produce upwards of 8 million gallons a year of green motor fuel calculated as gasoline equivalents.

Chemrec’s second-generation biorefinery technology based on black liquor gasification has been in development for a number of years. Its development plant in Piteå, Sweden, the only gasification plant in the world producing high-quality synthesis gas based on 100% renewable non-food-crop feedstock, recently reached 10,000 accumulated operating hours.

The syngas will be used to produce second-generation green motor fuels. The results achieved in the Chemrec plant are being used in the current scale-up of the technology to full-scale commercial-size gasifier units for 500 tonnes of black liquor solids per day.




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