| 腈纶生产中硫酸钠结晶工艺的调控 |
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| 引用本文： | 徐继兵,戴益,隋晓东. 腈纶生产中硫酸钠结晶工艺的调控[J]. 合成纤维工业, 2011, 34(5): 61-63 |
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| 作者姓名： | 徐继兵 戴益 隋晓东 |
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| 作者单位： | 中国石油天然气股份有限公司大庆炼化公司,黑龙江大庆,163411 |
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| 摘 要： | 根据结晶原理及工业结晶的控制要求,分析了硫氰酸钠( NaSCN)二步法腈纶生产中硫酸钠( Na2 SO4)结晶工序的失控原因,并提出了调控措施.结果表明:生产中结晶工序沉降槽底部晶浆过量去除破坏了Na2 SO4的结晶平衡,导致Na2 SO4不能有效去除；添加固体无水Na2 SO4,培养晶种,保持沉降槽底部Na2sO4质...
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| 关 键 词： | 聚丙烯腈纤维 硫氰酸钠 硫酸钠 结晶 |
Control of sodium sulfate crystallization process during polyacrylonitrile fiber production |
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| Xu Jibing,Dai Yi,Sui Xiaodong. Control of sodium sulfate crystallization process during polyacrylonitrile fiber production[J]. China Synthetic Fiber Industry, 2011, 34(5): 61-63 |
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| Authors: | Xu Jibing Dai Yi Sui Xiaodong |
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| Affiliation: | Xu Jibing,Dai Yi,Sui Xiaodong (Daqing Refining and Chemicals Company,China Natioanl Petroleum Corporation,Daling 163411) |
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| Abstract: | The factors causing the failure of sodium sulfate(Na_2SO_4) crystallization process were analyzed during two-step polyacrylonitrile fiber production from sodium thiocyanate(NaSCN) according to the crystallization principle and the industrial crystallization control requirement.And the control approaches were proposed.The results showed that the excessive removal of crystal slurry at the bottom of the settling tank during the crystallization process damaged the crystallization equilibrium,causing the failure... |
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| Keywords: | polyactylonitrile fiber sodium thiocyanate sodium sulfate crystallization |
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