海藻热解特性及动力学分析

›› 2007, Vol. 41 ›› Issue (3): 1-5.

• 研究报道 • Next Articles

Study on Pyrolysis Characteristics and Kinetics of Seaweed

GUO Xiao-lan¹, WANG Jun¹, CHEN Ming-gong¹, LI De-mao², MIN Fan-fei³, ZHANG Ming-xu³, WANG Guang-ce², CHEN Ming-qiang¹

1. Department of Chemical Engineering, Anhui University of Science & Technology, Huainan 232001, China;2. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;3. Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

Received:2006-10-18 Revised:1900-01-01 Online:2007-05-30 Published:2007-05-30

Abstract

Abstract: The pyrolytic characteristics of two seaweeds were investigated by thermogravimetric analysis technique. The pyrolysis experiments were performed up to 700℃ at heating rates of 10、20、30、50 and 80℃/min in a dynamic nitrogen flow of 100 mL/min.The results showed four stages (dehydration, two main devolatilizations and residual decomposition) appeared in the pyrolysis process. Activation energies and pre-exponential factors were calculated by Popescu method. Experment results indicated that Avrami-Erofeev equation was suitable for describing the main devolatilization process of seaweed. Thermolysis mechanism was random nucleation and nuclei growth.With the increasing of conversion,activation energies and pre-exponential factors were also increased. This showed that pyrolysis took place easily when conversion rate was low.

Key words: seaweed, pyrolysis, thermolysis mechanism, kinetics

CLC Number:

TQ424.1

GUO Xiao-lan;WANG Jun;CHEN Ming-gong;LI De-mao;MIN Fan-fei;ZHANG Ming-xu;WANG Guang-ce;CHEN Ming-qiang. Study on Pyrolysis Characteristics and Kinetics of Seaweed[J]. , 2007, 41(3): 1-5.

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Study on Pyrolysis Characteristics and Kinetics of Seaweed

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