Gasification
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Gasification is a process that converts biomass- or fossil fuel-based carbonaceous materials into gases, including as the largest fractions: dinitrogen, carbon monoxide, dihydrogen, and carbon dioxide
Adler Diplomat 3 with gas generator (1941)
Visualisation of proposed fluidized bed gasification facility in Amsterdam designed to convert waste materials into biofuels
HTCW reactor, one of several proposed waste gasification processes
Gasification plant, Güssing, Austria (2001–2015)
Pyrolysis
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Pyrolysis is a process involving the separation of covalent bonds in organic matter by thermal decomposition within an inert environment without oxygen.
Gasification
…flow and may be involved with subsequent chemical reactions, notably the water-gas reaction if the temperature is sufficiently high (see step #5). The pyrolysis (or devolatilization) process occurs at around 200–300 °C. Volatiles are released and char is produced, resulting in up to 70% weight loss for coal…
Burning pieces of wood, showing various stages of pyrolysis, followed by oxidative combustion
Oak charcoal
Caramelized onions are slightly pyrolyzed.
This pizza is pyrolyzed, almost completely carbonized.