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

被引:31
作者
Chen Xiaoping [1 ]
Fan Chunlei [1 ]
Liang Cai [1 ]
Pu Wenhao [1 ]
Lu Peng [1 ]
Zhao Changsui [1 ]
机构
[1] SE Univ, Key Lab Clean Coal Power Generat & Combust Techno, Minist Educ, Nanjing 210096, Peoples R China
关键词
pneumatic conveying; dense phase; pulverized coal; high pressure; two phase flow;
D O I
10.1007/s11814-007-0087-6
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Experiments of dense-phase pneumatic conveying of pulverized coal were carried out in a test facility with a conveying pressure up to 4 MPa. 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.
引用
收藏
页码:499 / 502
页数:4
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