TERMIUM Plus®

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PYROLYSIS [1 record]

Record 1 2016-11-15

English

Subject field(s)
  • Thermodynamics
DEF

The thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen.

OBS

When the primary products of the oxygen-deficient decomposition are non-condensible fuel or synthesis gases, the process is known as gasification.

OBS

The distinction between "pyrolysis" and "incineration" is that in a "pyrolysis unit" the organic material or carbon is not fully oxidised and the residue still has a heating value.

OBS

pyrolysis: term standardized by ISO.

French

Domaine(s)
  • Thermodynamique
DEF

Décomposition thermique de matières organiques en l'absence d'oxygène ou en atmosphère pauvre en oxygène.

CONT

Les principaux procédés de combustion sont : - l'incinération : combustion en présence d'un excès d'oxygène, - la pyrolyse : combustion en atmosphère déficitaire en oxygène, qui entraîne la gazéification d'une partie des matières organiques, - la pyrohydrolyse : réaction avec la vapeur d'eau vers 800 °C, - la combustion en milieu sels fondus, - la digestion acide : oxydation en milieu acide H2SO4 + HNO3.

OBS

pyrolyse : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Termodinámica
DEF

Degradación térmica de la materia orgánica en ausencia de oxígeno.

CONT

Pirólisis. Descomposición físico-química del material degradable de los desechos sólidos, debido a la acción de la temperatura en una atmósfera deficiente de oxígeno; no produce contaminación atmosférica apreciable y la cantidad de residuos resultante es mayor que en la incineración. La tecnología de pirólisis está en fase de experimentación.

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