| 三聚磷酸钠对水煤浆分散剂性能的影响 |
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| 引用本文： | 江红艳,杨东杰,周明松.三聚磷酸钠对水煤浆分散剂性能的影响[J].煤炭转化,2011,34(4). |
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| 作者姓名： | 江红艳 杨东杰 周明松 |
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| 作者单位： | 广东省绿色化学产品技术重点实验室,华南理工大学化学与化工学院,510640广州 |
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| 基金项目： | 国家杰出青年科学基金资助项目(20925622); 广东省科技计划项目(2010A080804020) |
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| 摘 要： | 针对煤粉中含有的高价金属离子会降低水煤浆的成浆性问题,采用了三聚磷酸钠作为金属离子调节剂与几种阴离子型分散剂复配后,进一步提高分散降黏性能.通过测定分散剂在煤粒表面的吸附量、Zeta电位及吸附层厚度,揭示了三聚磷酸钠对脂肪族分散剂(SAF)、木质素系分散剂(GCL3S)及萘系分散剂(FDN)的分散协同增效作用机理.结果表明,三聚磷酸钠与SAF复配同时增加了煤粒之间的静电排斥力和空间位阻,使分散剂在煤粒表面的Zeta电位和吸附层厚度均增大;与GCL3S复配主要增加了煤粒之间的静电排斥作用;对FDN是通过增加分散剂在煤粒之间的空间位阻效应,促进分散降黏性能的提高.
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| 关 键 词： | 水煤浆 分散降黏 三聚磷酸钠 |
EFFECT OF SODIUM TRIPOLYPHOSPHATE ON CWS DISPERSANTS |
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| Jiang Hongyan,Yang Dongjie,Zhou Mingsong.EFFECT OF SODIUM TRIPOLYPHOSPHATE ON CWS DISPERSANTS[J].Coal Conversion,2011,34(4). |
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| Authors: | Jiang Hongyan Yang Dongjie Zhou Mingsong |
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| Affiliation: | Jiang Hongyan Yang Dongjie and Zhou Mingsong(School of Chemical and Energy Engineering,Guangdong Provincial Laboratory of Green Chemical Technology,South China University of Technology,510640 Guangzhou) |
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| Abstract: | Because of high valence metal ions contained in coal would reduce the perfor-mance of coal water slurry,sodium tripolyphosphate was selectd as a kind of adjustment agent to remix with different anionic dispersants to enhance the dispersing and viscosity-reducing ability.Through the experiment of adsorption mensuration,Zeta-potential and the adsorption layer thickness of dispersant on the coal surface,it reveals the synergistic interaction mechanism of sodium tripolyphosphate with three different molecular s... |
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| Keywords: | coal water slurry dispersing and viscosity-reducing ability sodium tripolyphosphate |
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