The main difference between biomass gasification and pyrolysis lies in the presence and amount of oxygen during the process.
4 Key Differences Between Biomass Gasification and Pyrolysis
1. Oxygen Presence
Pyrolysis involves the thermal decomposition of biomass in the absence of oxygen.
Gasification occurs with the presence of limited oxygen.
2. Product Output
In pyrolysis, the primary products are bio-oil, bio-char, and syngas.
In gasification, the primary product is syngas, which consists of hydrogen, carbon monoxide, and methane.
3. Process Conditions
Pyrolysis is highly dependent on temperature and heating rate. Lower temperatures and slower heating rates favor bio-char production, while higher temperatures and faster heating rates lead to more gas production.
Gasification involves heating biomass in the presence of a controlled amount of oxygen or other oxidizing agents.
4. Application Focus
Pyrolysis is favored when the focus is on producing bio-oil and bio-char.
Gasification is preferred for applications requiring high-efficiency energy production and the generation of syngas.
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