Engineering Pyrolysis vs Gasification-Thermochemical conversion of biomass

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Pyrolysis and gasification are two thermochemical processes for converting biomass, with key differences in their operation. Pyrolysis occurs in the absence of air, leading to the incomplete combustion of organic material and producing gases like CO2 and H2O. In contrast, gasification involves a controlled amount of oxygen or steam, allowing for the extraction of valuable gases such as hydrogen and carbon monoxide, known as "producer gas." The discussion highlights confusion over diagrams that mislabel components, emphasizing the need for accurate representations in understanding these processes. Understanding these distinctions is crucial for effective biomass conversion strategies.
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Homework Statement
Difference between pyrolysis and gasification
Relevant Equations
none
Pyrolysis-:
1651600046873.png


Gasification-:

1651600069604.png


what's the difference between these two? i have in my notes that gasification uses partial air but pyrolysis uses no air. but in this figure gasification uses steam pipe...whereas pyrolysis uses air pipe. I can't understand what is going on.
 
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shivajikobardan said:
Homework Statement:: Difference between pyrolysis and gasification
Relevant Equations:: none

what's the difference between these two?
Those diagrams are unreliable. That is not a “cyclotron”, it is actually a “cyclone separator”.

Pyrolysis incompletely burns organic material with oxygen from the air, producing CO2 and H2O exhaust gas.
https://en.wikipedia.org/wiki/Pyrolysis

Gassification does not provide oxygen to complete the combustion, but extracts the hydrocarbon and carbon monoxide as “producer gas” for later reaction or use as a fuel.
https://en.wikipedia.org/wiki/Gasification
 
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