煤炭工程 ›› 2017, Vol. 49 ›› Issue (3): 115-118.doi: 10.11799/ce201703033

• 研究探讨 • 上一篇    下一篇

宁东煤气流床气化残渣特性研究

吴阳1,赵世永2,李博1   

  1. 1. 西安科技大学化学与化工学院
    2. 西安科技大学
  • 收稿日期:2016-06-07 修回日期:2016-07-31 出版日期:2017-03-09 发布日期:2017-03-21
  • 通讯作者: 赵世永 E-mail:zsy@xust.edu.cn

Study on the residue features of Ningdong coal in entrained flow gasifiers

  • Received:2016-06-07 Revised:2016-07-31 Online:2017-03-09 Published:2017-03-21

摘要: 为提高气化灰渣使用效率,实现资源利用最大化,以宁东煤Texaco气化炉、GSP气化炉产生的灰渣为研究对象,通过粒度分析、可燃物测定、XRD、SEM、FTIR以及BET等分析手段,研究粗、细渣样粒度组成、含量嵌布、烧失量以及各自碳粒表面形态等特性。结果表明,细渣残碳含量明显高于粗渣中残碳含量|两种加压气化装置生成的渣样碳粒表面均生成了较发达的孔隙结构,熔融态矿物质呈圆球状粘附于碳粒表面,并测得碳粒有机官能团的变化|灰渣中的矿物质主要以惰性物质存在,且大部分无规则晶型|粗渣碳粒比表面积大于相应细渣。

关键词: 气流床, 气化残渣, 粒度分布, 烧失量, 表面形态, 官能团, 孔结构

Abstract: In order to improve the using efficiency of gasification residue and maximize the resource utilization. Different kinds of residue generated from Texaco gasifier and GSP gasifier as objects were researched. Basing on necessary measures includes grading?analysis, determination of loss on ignition, XRD、SEM, FTIR and BET to investigate particle-size distribution, content distribution, loss on ignition as well as morphology characteristics of surface of coal particles of coarse slag and fine coarse. Results show that residual carbon content of fine slag is higher than that of coarse slag; coal particles surface in residue of two pressurized gasification units produce well-developed pore?structure, spherical molten minerals adhere to the surface of coal particles, and changing of organo-functional groups of coal particles surface is researched; minerals in residue are existed as inert materials and they are presented with random crystals; surface area of coal particles from coarse slag is higher than from fine slag.

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