Introducing CarbonFX: The Cutting Edge in
Biomass Torrefaction Technology
Airex Energy has successfully developed an exciting new technology for biomass torrefaction. Based on a unique patented cyclonic bed reactor, CarbonFX enables large scale biocoal production from a variety of feedstock, including woody biomass and agricultural waste.
What is Torrefaction?
Torrefaction, a mild form of pyrolysis, refers to the heat-treatment of biomass at 250-320 °C with little or no oxygen present. The purpose of torrefaction is to remove moisture and VOCs (volatile organic compounds) from raw biomass, thus converting it to a solid, blackened, hydrophobic (water-resistant) material. The final product, known as torrefied biomass or biocoal, typically contains 70% of the mass and 90% of the energy content of the pre-treated material.
Torrefaction produces a solid biofuel that has handling, milling and co-firing capabilities far superior to other solid biofuels.
Biocoal pellets contain 15 GJ/m3 and 23 GJ/tonne. Wood chips with a 50% moisture content contain only 3 GJ/m3 and 9.5 GJ/ton. Standard wood pellets contain 11 GJ/m3 and 17 GJ/ton.
Biocoal is brittle and can be easily milled and co-fired with bituminous coal, thus eliminating the need for dedicated biomass equipment like hammer mills, silos, feeding systems, and burners. And because it is hydrophobic, biocoal is significantly less likely to degrade and so requires little or no protection from the elements during shipping and storage.
Low Cost Feedstock
A wide variety of low-cost feedstock can be successfully torrefied, including forest and mill residue (even bark) and agricultural waste.
Biocoal? Torrefied Pellets?
Torrefied Biomass? Biocoke? Biochar?
What does all this mean?
These are all common names used to describe the end products that can result from various torrefaction processes. Biocoal can be classified according to how it will be used:
Biocoal, with a calorific value of 20-23 GJ/tonne, can be burnt in boilers, kilns, and furnaces.
Biocoal can be used as a reducing agent in iron, ferrous alloy, and silicon metal furnaces, and has a fixed carbon content of at least 80%. When used for this application, torrefied biomass is referred to as bio-coke or biocoke.
Biocoal can be used for water, gas, and gold purification, as well as metal extraction. When used for this application, biocoal is referred to as activated biocarbon or activated bio carbon.
Biocoal can be used in soil amendment and soil remediation, such as in the rehabilitation of mine tailing sites. When used for this application, biocoal is referred to as biochar.
Simply the Best Torrefaction Technology
CarbonFX technology is simple, reliable, scalable, and highly efficient. By keeping precise control of both reactor temperature and residence time, CarbonFX allows for the production of a wide range of end products with unmatched quality and consistency.
The capital cost of CarbonFX is extremely competitive due to its simplicity and reduced footprint. Whether you are a university looking for R&D equipment or a company looking to produce thousands of tonnes per year, CarbonFX is for you.
Producing Biocoal Now!
In December 2015, Airex Energy started production of biocoal pellets at its Becancour plant, with a production capacity of 15,000 tons per year.