Biomass: wood waste, broiler plant and fishery wastes
Biomass is organic material either directly from plants and animals, or indirectly from industrial, commercial, domestic or agricultural products.
In a huge mass of organic material, a large number of agro-industrial wastes, i.e. untapped natural, industrial and domestic waste.
• Agriculture: remains from vegetable crop( husk, straw ...).
• Livestock: waste from slaughter, bone meal, dead animals, bird droppings.
• Forestry : forest residues, wood waste .
• Fishing : waste canneries, bone meal, a dead fish .
• Industrial and domestic organic waste : waste water, organic waste, food waste, waste paper.
Agricultural and industrial wastes are a great source of renewable energy. By pyrolysis of biomass from this we get clean energy.
Examples of electricity production from biomass pyrolysis facilities:
• 100 tons per day of dry chicken manure (~ 10 MJ / kg) generates ~ 2.9 MW (net)
• 30 tons per day of wood chips (~ 14 MJ / kg) with 25% humidity generated ~ 1.3 MW (net)
Pyrolysis - the first stage of burning wood. Well-known flames on the burning wood, twigs in the fire, are formed by the combustion of the wood itself is not carbon and gases - volatile pyrolysis products. When pyrolysis of wood (450-500 ° C) formed a lot of different substances, the largest concentration of gaseous pyrolysis products are : methyl alcohol ( methanol is therefore obsolete term " wood alcohol "), acetic acid, acetone, benzene, furan, etc. The non-volatile products of incomplete pyrolysis - liquid and paste resins, final product complete pyrolysis of wood is almost pure carbon (containing impurities in the form of a little oxide of potassium, sodium, calcium, magnesium and iron) - charcoal.
Amount of electricity produced depends on the initial moisture content of biomass feedstock . Biomass ( wood, straw, waste from poultry and paper production, etc.) is a renewable energy source. The biomass is pyrolyzed and pyrolysis gas is then used to generate electricity.
Carbon residue ( char ), obtained after treatment of straw, wood waste and poultry, can be further affected to gasification, increasing the amount of electricity produced, as well as used as fertilizer for soil remediation or as all kinds of fillers .
Analyzes of two samples of gas in the pyrolysis of wood sawdust.