Méthode de production de biochar
Energy Potential and Utilization
Syngas Gas
Syngas gas is mainly a mixture of carbon monoxide (CO) and hydrogen (H2) with lower quantities of carbon dioxide (CO2), methane(CH4), water(H2O), and a range of volatile compounds. Syngas gas is costly to store and transport. Therefore it is usually combusted on-site to meet the heat requirements of the pyrolyzer. However, suppose the heat energy released during combustion of the pyrolysis gas exceeds the demand of a biochar system, and opportunities exist nearby the plant. In that case, the Syngas could be used to provide heat for external processes. If the energy supplied by the Syngas is converted into electricity, then that could be fed into the grid.
Versatile Applications
Huile Pyrolytique
Pyrolysis Oil or Bio-Oil consists of a complex mixture of oxygenated hydrocarbons with a considerable fraction of water. Bio-oil is attractive for the energy industry since it is transportable, storable, and a potential replacement for fuel oil or Diesel in stationary applications, including boilers, furnaces, engines, and turbines for electricity generation. However, it cannot be used directly as a transport fuel unless upgraded, which is technically feasible but expensive. In addition, Pyrolysis Oil is the source of many valuable chemical products such as acetic acid, resins, sugars, food flavourings, slow-release fertilizers, adhesives and preservatives.
Perspective historique et pratiques modernes
Biochar and Traditional Charcoal Production
Biochar, earlier generally referred to as charcoal, has been produced from woody biomass for thousands of years. In developing countries, traditional earth-mound, brick, and metal kilns are inefficient in making charcoal and usually do not include burning exhaust gases. Therefore, they are an essential source of deforestation and greenhouse gas emissions. Moreover, small-scale pyrolysis stoves are promoted to decrease fuel consumption and deforestation in developing countries, improve respiratory health, and increase soil fertility by incorporating Biochar into soils.
