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›› 2001, Vol. 1 ›› Issue (1): 0-0.

• 1 •    

抑制氮氧化物排放的无烟燃煤技术及其在窑炉改造中的应用

徐有宁，宋文立，白蕴如，等   

  1. 中国科学院化工冶金研究所多相反应开放实验室, 北京100080
  • 出版日期:2001-02-20 发布日期:2001-02-20

Dispersion Behavior of Ultrafine Titanium Dioxide Particles in Aqueous Solution

CUI Ai-li, WANG Ting-jie, HE Hong, JIN Yong   

  1. Dept. of Chem. Eng., Tsinghua University, Beijing 100084, China
  • Online:2001-02-20 Published:2001-02-20

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被引次数

2

摘要： 抑制NO排放的无烟燃煤技术能够同时降低NO和烟黑的排放, 提高燃烧效率. 本文介绍了该技术用于窑炉改造的实例，并对改造前后的污染物排放结果进行了讨论.

关键词: 窑炉, 氮氧化物, 一氧化碳, 烟黑

Abstract: The effects of dispersant on the dispersion of ultrafine TiO2 particles were investigated. The sedimentation height and the size distribution of the dispersed particles in aqueous solution were employed to characterize the particle dispersion. The experimental results show that (NaPO3)6, Na2SiO3 and C2H5OH are efficient dispersants for TiO2 particles in aqueous solution. The zeta potential of the particles in aqueous solution was measured to analyze the dispersion mechanism of different dispersants, since (NaPO3)6 and Na2SiO3 can significantly increase the absolute value of zeta potential of particles, and C2H5OH forms a solvent layer on the particle surface. Thus, satisfactory and stable dispersion of TiO2 particles in aqueous solution is obtained.

Key words: ultrafine particles, dispersion, titanium dioxide, agglomeration, double electrode layer

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