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Directory:Dynamotive Energy Systems Corporation -- Fast Pyrolysis
Dynamotive Energy Systems Corporation's carbon/greenhouse-gas-neutral, fast pyrolysis technology uses medium temperatures and oxygen-free conditions to turn dry waste biomass and energy crops into BioOil® for power and heat generation. BioOil® can be further converted into vehicle fuels and chemicals. Dynamotive’s process does not require feedstock that has alternative food use.
Dynamotive’s flagship 200 tonnes per day plant is located outside of Toronto, Ontario, Canada. A fire set back operation. Repairs were completed in July 2008.
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How it Works
Prepared feedstock (<10% moisture and 1-2 mm particle size) is fed into the bubbling fluid-bed reactor, which is heated to 450–500 °C in the absence of oxygen. This is lower than conventional pyrolysis systems and, therefore, has the benefit of higher overall energy conversion efficiency. The feedstock flashes and vaporizes like throwing droplets of water onto a hot frying pan. The resulting gases pass into a cyclone where solid particles, char, are extracted. The gases enter a quench tower where they are quickly cooled using BioOil already made in the process
The BioOil condenses and falls into the product tank, while non-condensable gases are returned to the reactor to maintain process heating. The entire reaction from injection to quenching takes only two seconds.
100% of the feedstock is utilized in the process to produce BioOil and char. As the non-condensable gases are used as energy to run the process, nothing is wasted and no waste is produced. The uncondensed, flammable gases are re-circulated to fuel approximately 75% of the energy needed by the pyrolysis process.
Three products are produced: BioOil (60-75% by weight), char (15-20% wt.) and non-condensable gases (10-20% wt.). Yields vary depending on the feedstock composition. BioOil and char are commercial products and non-condensable gases are recycled and supply a major part of the energy required by the process. No waste is produced in the Dynamotive process
A fourth product, BioOil Plus, can be produced by adding back the separated char into the BioOil, in a finely ground form of about 8 microns in size.
BioOil is an alternative fuel made using Dynamotive’s pyrolysis process of biomass. It is a dark brown, free flowing liquid fuel with a smoky odour reminiscent of the plant from which it was derived. BioOil is formed in a process called pyrolysis wherein plant material (biomass), such as sawdust or bagasse from sugar cane, is exposed to 400-500 degrees Celsius in an oxygen free environment.
BioOil contains up to 25% water. The water component in BioOil is not a separate phase and is important because it lowers the viscosity of the fuel. BioOil is not a hydrocarbon-water mix like Orimulsion. Another feature of BioOil is its propensity to change slowly over time. This is not to be considered an instability because it can take months.
BioOil is a fossil fuel substitute. It pumps well, ignites, and burns readily when atomized.
BioOil has EcoLogo certification, having met stringent environmental criteria for industrial fuels as measured by Environment Canada’s Environmental Choice Program. The EcoLogo signifies that the manufacturing process of the product has been audited by a credible third party, and supported by empirical data on combustion tests conducted by both the company and authorized third parties.
BioOil should be handled in a similar manner as conventional fuels. Direct contact with skin, as well as inhalation of its vapours should be avoided. Although not as readily flammable as conventional fuels, pyrolysis fuels should always be kept away from open flame or other heat sources. For further information, please see the material safety data sheet at the end of this document.
Unit costs as well as energy costs, e.g. cents/kw-h, including factors such as installation, maintenance, decommissioning; relative to other renewable technologies as well as relative to conventional energy products.
- Turns feedstock into fuel.
- Apparatus for separating fouling contaminants from non-condensable gases Patent number: 7004999
- Abstract: A method of continuously capturing BioOil and its constituents from a gas stream produced in a fast pyrolysis/thermolysis process, in a usable liquid form so as to produce a non-condensable gas free of fouling contaminates. The method includes separating BioOil and its constituents from a gas stream using hot inertial separation to maintain the temperature of said BioOil and its constituents above a temperature at which the thick and/or sticky constituents cause inefficient operation of the equipment but low enough so that they do not undergo rapid degradation. Next the gas velocity is reduced to a temperature sufficiently low to allow droplets in the gas stream to settle out but high enough so that a viscosity of said droplets remains low enough to avoid inefficient operation of the separation equipment. Finally, liquid is condensed out of the gas stream.
Company:Dynamotive Energy Systems Corporation
Dynamotive Energy Systems Corporation is an energy solutions provider headquartered in Vancouver, Canada, with offices in the USA and Argentina. Its carbon/ greenhouse gas neutral fast pyrolysis technology uses medium temperatures and oxygen-free conditions to turn dry waste biomass and energy crops into BioOil® for power and heat generation. BioOil® can be further converted into vehicle fuels and chemicals. Dynamotive’s process does not require feedstock that has alternative food use.
The Company was incorporated in 1991, and is currently traded on the OTCBB under the symbol DYMTF.
Warren L. Johnson, Gholam H. Yavari, Desmond St. A. G. Radelin
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Angus Corporate Centre
1700 West 75th Avenue
Vancouver BC V6P 6G2
T: (604) 267-6000
F: (604) 267-6005
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