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Release characteristics of potassium and chlorine for torrefied wheat straw during a combined pyrolysis-combustion system

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Sep 2020Publisher:Elsevier BVJournal:Bioresource Technology, volume 312, page 123,591 (issn: 0960-8524,

Authors: Ganggang Min; Houlei Zhang; Xinzhi Liu; Junyi Wang; Shuguang Zhu; Shuping Zhang; Shuping Zhang;

doi: 10.1016/j.biortech.2020.123591

pmid: 32485611

Release characteristics of potassium and chlorine for torrefied wheat straw during a combined pyrolysis-combustion system

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Abstract

The objective is to investigate the release characteristics of potassium (K) and chlorine (Cl) for torrefied wheat straw during a combined pyrolysis-combustion system. Powder and flake wheat straw samples were torrefied at different temperature of 200-300 ℃. The basic characteristics of torrefied samples and the K and Cl release rates of torrefied samples and their char samples derived from pyrolysis at 400-800 ℃ were analyzed and characterized. The results indicated that release rate of Cl was significantly higher than that of K under the same torrefaction conditions. In order to keep most of K and Cl remaining in biochar as well as the volatiles were completely released, the pyrolysis temperature of 700 ℃ for pyrolysis-combustion system was suitable. The total release rate of K and Cl at the pyrolysis temperature of 700 ℃ both exhibited a change trend of decreasing first and then increasing with the increase of torrefaction severity.

Related Organizations

Southeast University
China (People's Republic of)
Southeast University
China (People's Republic of)
Nanjing University of Science and Technology
China (People's Republic of)
Nanjing University of Science and Technology
China (People's Republic of)

Keywords

Hot Temperature, Temperature, Potassium, Biomass, Chlorine, Pyrolysis, Triticum

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