The temperature of fast pyrolysis reaction can vary depending on the desired amount of bio-oil or gas products. According to the references provided, fast pyrolysis occurs at temperatures of 650 to 1000 °C (1202 to 1832 °F) [74]. The heating rate during fast pyrolysis is high, ranging from 500 to 1000 °C/s, and the residence time of products in the reaction space is low, up to 5 seconds [74].
It is worth mentioning that the temperature range for fast pyrolysis is different from that of flash pyrolysis. Flash pyrolysis occurs at moderate temperatures between 400 and 600 °C (752 and 1112 °F) [74].
The yield of products during fast pyrolysis is typically 30-60% liquid condensates, 15-35% gases (CO, H2, CH4, CO2, and light hydrocarbons), and 10-15% char [74]. The high heating and heat transfer rates, along with the carefully controlled pyrolysis temperature and rapid cooling of the products, contribute to the efficient conversion of biomass into bio-fuels [74].
In summary, the temperature of fast pyrolysis reaction typically ranges from 650 to 1000 °C (1202 to 1832 °F), with high heating rates and short residence times. This process allows for the production of bio-oil and gas from biomass.
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