Flash pyrolysis is a process where the residence time is incredibly short, lasting less than 2 seconds.
This brief duration is essential for the process.
It helps to maximize the yield of bio-oil and minimize the production of gas and tar.
Flash pyrolysis operates at rapid heating rates and moderate temperatures between 400 and 600 °C.
These conditions facilitate the quick decomposition of biomass into its constituent components.
What is the Residence Time in Flash Pyrolysis? (Under 2 Seconds Explained)
1. The Importance of Short Residence Time
The short residence time is achieved by using high heating rates.
These rates can range from 100 to 10,000°C/s.
This rapid heating causes the biomass to decompose quickly into vapors.
The vapors are then condensed into bio-oil.
The quick processing time ensures that the vapors do not have enough time to recombine into heavier compounds.
This prevents the formation of tar and char.
2. Optimizing Bio-Oil Production
In summary, the residence time in flash pyrolysis is intentionally kept very short, typically under 2 seconds.
This is to optimize the production of bio-oil and reduce the formation of unwanted byproducts like gas and tar.
This is achieved through the use of high heating rates and moderate temperatures.
These conditions facilitate the rapid decomposition and processing of biomass.
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