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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 25, 2006
Accepted November 6, 2006

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Investigation on characteristics of pulverized coal dense-phase pneumatic conveying under high pressure

Chen Xiaoping^† Fan Chunlei Liang Cai Pu Wenhao Lu Peng Zhao Changsui

Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing, 210096, China

xpchen@seu.edu.cn

Korean Journal of Chemical Engineering, May 2007, 24(3), 499-502(4), 10.1007/s11814-007-0087-6

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Abstract

Experiments of dense-phase pneumatic conveying of pulverized coal were carried out in a test facility with a conveying pressure up to 4MPa. The influence of fluidization nitrogen flow rate, the flow rate of supplementary nitrogen, and the pressure difference between sending hopper and receiving hopper on the solids to gas ratio and the solid mass flow rate was investigated. Test results indicate that with the increase in fluidization nitrogen flow rate, the solid mass flow rate increases, and the solids to gas ratio increases at first and then declines. When the fluidization of pulverized coal in the sending vessel becomes intensive, with the increase in supplementary nitrogen flow rate, the solids to gas ratio declines and the solid mass flow rate increases. And the solid mass flow rate increases linearly with the increase in pressure difference between two hoppers. The experimental results provide a database for the design and operation of a dense-phase pneumatic conveying system.

Keywords

Pneumatic Conveying Dense Phase Pulverized Coal High Pressure Two Phase Flow

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