Temporal release behavior of potassium during pyrolysis and gasification of sawdust particles

Zhen Zhang, Jing Liu, Fenghua Shen and Zhen Wang

Renewable Energy, 2020, vol. 156, issue C, 98-106

Abstract: The potassium release from sawdust in pyrolysis and gasification was studied using an online measurement method. The final results suggested that the potassium releases more in pyrolysis than that in CO2 gasification environment at 800-900 °C. The overall activation energies and pre-exponential factors of potassium release in pyrolysis and gasification were further derived. In addition, the additive chlorine influence on potassium release had been evaluated, and the results showed that the promoting effect of chlorine during pyrolysis was higher than the case during CO2 gasification. Thermodynamic calculations were done to predict the possible potassium species during pyrolysis and gasification. The K2CO3 (s) formation mostly contributed to the higher potassium release proportion in pyrolysis than that during CO2 gasification.

Keywords: Potassium; Release behavior; Biomass; Pyrolysis and gasification; On-line measurement (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:156:y:2020:i:c:p:98-106

DOI: 10.1016/j.renene.2020.04.076

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