Thermal Degradation of Alkaline Black Liquor from Wheat Straw. 2. Fixed-Bed Reactor Studies
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- 作者：G. Gea ; M. B. Murillo ; J. L. Sá ; nchez ; and J. Arauzo
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2003
- 出版时间：November 12, 2003
- 年：2003
- 卷：42
- 期：23
- 页码：5782 - 5790
- 全文大小：218K
- 年卷期：v.42,no.23(November 12, 2003)
- ISSN：1520-5045
文摘
The usual problems experienced with common recovery boilers are aggravated in processesinvolving alkaline black liquor derived from straw. The consequent need to develop alternativeprocesses for the use of black liquor for energy purposes, such as pyrolysis or gasification, requiresa good understanding of the thermochemical behavior of this substance. There is, however, littleinformation available. Part 1 of this work (Gea, G.; Murillo, M. B.; Arauzo, J. Ind. Eng. Chem.Res. 2002, 41, 4714), therefore, studied the thermal degradation of alkaline black liquor fromstraw in a thermogravimetric system. The present work also focuses on its pyrolysis. In particular,the influence has been analyzed of the final pyrolysis temperature (250-900 
C) and the heatingrate (5-30 C/min) on the product yields, gas composition, and specific surface area of theresulting char in a fixed-bed reactor. The results obtained show that both the energy recoveryand the specific surface area of the char increase with a rise in the final pyrolysis temperatureand the heating rate.
C) and the heatingrate (5-30 C/min) on the product yields, gas composition, and specific surface area of theresulting char in a fixed-bed reactor. The results obtained show that both the energy recoveryand the specific surface area of the char increase with a rise in the final pyrolysis temperatureand the heating rate.