TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

RAPID PYROLYSIS [5 records]

Record 1 1993-12-31

English

Subject field(s)
  • Chemical Engineering
  • Biomass Energy
DEF

pyrolysis in which reaction times are short, resulting in higher yields of certain fuel products, which may range from primary oils to olefins and aromatics depending on the severity of conditions. Rapid heating suppresses the formation of charcoal.

CONT

Fast pyrolysis is differentiated from flash pyrolysis primarily with respect to temperature, vapour residence times and end-product. Extremely rapid heating rates(about 105°C/s), high temperatures(greater than 600°C) and short vapour residence times less than 0-5 s) are required to maximize the production of high quality gases(i. e. olefins, other hydrocarbons) at the expense of char and condensible liquids.

OBS

On occasion, terms such as flash and fast pyrolysis have been used interchangeably. The biomass community would avoid considerable misunderstanding and confusion should a standard nomenclature be established.

French

Domaine(s)
  • Génie chimique
  • Énergie de la biomasse
DEF

Réaction de pyrolyse exécutée rapidement et menant à de meilleurs rendements en combustibles.

OBS

Certains auteurs tendent à assimiler la pyrolyse rapide à la pyrolyse rapide à haute température ou pyrolyse flash (voir cette fiche dans la banque Termium).

Spanish

Save record 1

Record 2 1993-05-25

English

Subject field(s)
  • Biological Sciences
  • Biomass Energy
CONT

The ultra-rapid fluidized(URF) reactor impacts jets of a hot(1000 °C) particulate heat carrier onto a jet of cold particulate carbonaceous feedstock to effect rapid pyrolysis through thermal shock. Biomass, heavy oils and asphalts have been pyrolyzed in a mini-pilot plant. Scale-up has been studied on cold models. The objective is to produce chemical intermediates for the synthesis of petrochemicals and transportation fuels.

French

Domaine(s)
  • Sciences biologiques
  • Énergie de la biomasse
CONT

Le réacteur ultra-rapide fluidisé (URF) lance des jets de caloporteur finement divisé contre un jet de produit carbonacé finement divisé et froid pour le pyrolyser sous l'effet du choc thermique. La biomasse, les huiles lourdes et les asphaltes ont été pyrolysés dans un mini-pilote. L'extrapolation a été étudiée sur des modèles froids. On vise éventuellement la synthèse des carburants et des produits pétrochimiques.

Spanish

Save record 2

Record 3 1993-03-25

English

Subject field(s)
  • Chemical Engineering
  • Biomass Energy
CONT

Several thermochemical methods for converting biomass into chemicals, fuels and synthetic gases are currently under development. Various reactor configurations, catalysts and reaction conditions are employed depending primarily upon the desired product. Steam gasification is one method being developed for the production of synthetic gases from biomass. Steam gasification involves contacting biomass at elevated temperatures with water vapor. The overall conversion of biomass to gases can be represented by two stages. During the first stage-the rapid volatilization stage-biomass reacts rapidly to produce gases, condensible liquids and a char residue. In the second stage the char residue is slowly converted to gases by pyrolysis and the carbon-steam reaction....

French

Domaine(s)
  • Génie chimique
  • Énergie de la biomasse
DEF

Méthode employée pour la production de gaz de synthèse par la dégradation de biomasse à une température élevée en phase vapeur.

CONT

La vapogazéification des charbons de bois (...) est examinée à la pression atmosphérique et pour des températures atteignant 900 °C (...)

Spanish

Save record 3

Record 4 1993-02-05

English

Subject field(s)
  • Chemical Engineering
  • Biomass Energy
CONT

The Flash Pyrolysis process involves the rapid heating of finely shredded organic materials in the absence of air using a proprietary heat exchange system. The incoming feed is heated by contact with recycled char and pyrolysed to form liquids, gas, and char.

CONT

Flash pyrolysis is a rapid heating rate process(greater than 2°C/s) occurring at moderate temperatures(typically 400-600°C) whose liquid tar/oil products are maximized at the expense of char and gas. Vapour residence times are normally less than 2s.

OBS

The term may well be a trademark of the Occidental Research Corporation.

French

Domaine(s)
  • Génie chimique
  • Énergie de la biomasse
CONT

On appelle pyrolyse flash une réaction de pyrolyse pratiquée à très haute températures (1 000 degrés C) pendant un temps inférieur à une seconde.

Spanish

Save record 4

Record 5 1993-02-05

English

Subject field(s)
  • Chemical Engineering
DEF

A continuous fast pyrolysis process... designed to exploit the high temperatures, rapid heating rates, short vapour residence times and rapid quenching rates required for the production of olefins and other valuable chemicals on a commercial basis....

French

Domaine(s)
  • Génie chimique
DEF

Pyrolyse réalisée dans un laps de temps très court.

Spanish

Save record 5

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