Citation: ZHAO Ying-jie, CHEN Xue-li, CHEN Han-ding, LIU Hai-feng. Transfer of potassium in different forms during pyrolysis of rice straw in a fixed bed reactor[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(4): 427-433. shu

Transfer of potassium in different forms during pyrolysis of rice straw in a fixed bed reactor

1.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science & Technology, Shanghai 200237, China

Corresponding author: CHEN Xue-li,
Received Date: 9 October 2013
Available Online: 29 December 2013
Fund Project: 国家自然科学基金(21306050) (21306050)国家科技支撑计划(2012BAA09B02) (2012BAA09B02)新世纪优秀人才支持计划(NCET-12-0854)。 (NCET-12-0854)

Three materials including raw and water-washed ice straw, and microcrystalline cellulose with 5%KCl loaded were pyrolysed in the fixed bed reactor to investigate the transfer of potassium in four forms. The results indicate that the release of potassium changes little with pyrolysis temperature below 700 ℃, and the release of potassium dramatically increases with pyrolysis temperature above 700 ℃. During the rice straw pyrolysis, the transfer of four forms of potassium takes place, in which the water soluble and the potassium in residue decrease. It is confirmed that the potassium combined with carbon can be partly changed to water soluble, and the water soluble and organically bound potassium can exchange each other during pyrolysis.
- biomass,
- fixed-bed,
- pyrolysis,
- potassium,
- speciation,
- transform and transport
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沈阳化工大学材料科学与工程学院沈阳 110142