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›› 2011, Vol. 11 ›› Issue (6): 938-942.

• 流动与传递 • 上一篇    下一篇

不同粉料在双套管气力输送系统中的输送特性

张春霞 杜岩   

  1. 中国电力科学研究院 中国电力科学研究院
  • 收稿日期:2011-09-23 修回日期:2011-11-23 出版日期:2011-12-20 发布日期:2011-12-20
  • 通讯作者: 张春霞

Transport Characteristics of Particulate Materials in a Double-tube-socket Pipe Pneumatic Conveying System

ZHANG Chun-xia, DU Yan   

  1. China electric power research institute China electric power research institute
  • Received:2011-09-23 Revised:2011-11-23 Online:2011-12-20 Published:2011-12-20
  • Contact: ZHANG Chun-xia,

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被引次数

11

摘要： 选择粉煤灰、萤石粉与白灰3种典型粉料，在长100 m、管径100 mm的双套管气力输送系统实验台上进行了输送特性的研究，考察了粉料密度与粒径对其在双套管输送系统内输送效果的影响. 研究范围内，粉煤灰、萤石粉、白灰在本实验系统内的最小输送耗气量依次约为200, 300, 800 m3/h，最低输送压力梯度依次为0.8, 1.2, 1.1 kPa/m；物料输送质量流率最高点对应的输送耗气量依次约为500, 620, 820 m3/h. 根据物料在管道中的输送状态及压力梯度沿管线的变化特点，可将整体管道分为起始、过渡与充分发展3段.

关键词: 气力输送, 双套管, 输送特性, 粉煤灰, 萤石粉, 石灰粉

Abstract: Pulverized coal ash, fluorite powder and lime powder were chosen as typical materials. The transport experiment was carried out in a double-tube-socket pipe pneumatic conveying system with 100 m length and 100 mm diameter. The effects of powder diameter and density on their pneumatic conveying were analyzed. In the research range, the lowest air volume flow rate of pneumatic conveying for pulverized coal ash, fluorite powder and lime powder was 200, 300 and 800 m3/h, the lowest pressure gradient of conveying 0.8, 1.2 and 1.1 kPa/m, and the air volume flow rate of highest material flow rate 500, 620 and 820 m3/h, separately. Based on the transport characteristics and pressure gradient trend along the conveying direction, the pipeline could be divided into developing, transition and developed sections.

Key words: pneumatic conveying, double-tube-socket, transport characteristic, pulverized coal ash, fluorite powder, lime powder

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