Pyrolysis

Continuing on the idea of agricultural wastes, we move to pyrolysis, a term used to describe the conversion of biomass (and non-biological waste products, as well) into constituent elements by exposing it to moderate temperatures (~500ºC) in the absence of oxygen for short periods of time (fast pyrolysis). Though general research on pyrolysis has been going on for some time now, efforts to harness this natural phenomenon for energy production are just getting underway.

Agri-Therm, a Canadian company, has developed a machine of particular interest for farmers and foresters, both in the industrial and developing world. Their mobile pyrolysis machine can be used to process agricultural and forestry waste products, with minimal CO2 emissions, into three constituent elements: gas, bio-oil, and solid residue. Bio-oil can be used as a fuel in tractors, automobiles, and any other combustion based machinery, while the solid residue could be used as a fertilizer/soil amendment, or possibly as a substrate for mycoculture. The gas byproduct is useful for drying out agricultural wastes as they are prepared for pyrolysis. Integration with greenhouse technology is another possibility.

The small size of the pyrolysis machine makes it suitable for Third World applications, and the fact that its mobile leaves room for innovative entrepreneurs to develop service-based businesses where farmers are given the opportunity to process their wastes into fuel for a small fee, or fuel can be sold to other interested parties. Thus far, serious economic studies of small-scale pyrolysis have yet to materialize. But, the best way to find out this type of information is to try it out in real world situations.

As I’m beginning to discover, commercial applications in renewable energy are lagging far behind our scientific and engineering capabilities as a global civilization. The United States is far behind Europe, China and even Brazil in this regard, and short of a political miracle and unequivocal voter outrage, we will surely be surpassed by other nations in our ability to develop and deploy renewable, carbon-neutral energy solutions. That said, the problems and promises of renewables are moving well beyond the increasingly arbitrary borders of the nation-state as the world tries to find a unified and global solution to the very global problem of climate change.


Comments

Pyrolysis — 3 Comments

  1. i have some q’s
    what is the estimated cost of a mobile machine?
    what is the min number of pasture acres required to warrent a machine?
    are the mach avail in aust

  2. what is the output capacity of the mobile apparatus?. is it a
    continuous operation?. can it be upgraded? what is the cost?

    thank you

  3. Hello.
    I am interested in purchasing a small-scale pyrolyzer for conversion of biomass. My main objective is production of biochar (as soil amendment). An additional (although not necessary) product is syngas for electricity production. The apparatus may be of low capacity (input of no more than a few kg biomass per hour) and should be of relatively low price.
    The main biomass is woody waste. Optional biomass includes dairy farm’s waste. Please send me the details and contact information of relevant manufacturers.
    Thanks a lot.

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