| 一步法合成次硫酸氢钠甲醛的工艺研究及生产实践 |
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| 引用本文： | 田伟军,易卫国.一步法合成次硫酸氢钠甲醛的工艺研究及生产实践[J].现代化工,2010,30(3). |
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| 作者姓名： | 田伟军 易卫国 |
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| 作者单位： | 湖南化工职业技术学院,湖南,株洲,412004 |
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| 摘 要： | 介绍了以焦亚硫酸钠(Na2S2O5)、锌粉(Zn)、甲醛(CH2O)为原料,一步法合成次硫酸氢钠甲醛的新工艺,研究了合成原理及工艺条件:m(Zn)∶m(Na2S2O5)∶m(CH2O)=9∶10∶8,活化温度≤45℃,最高反应温度为95~102℃,高温反应时间为90 min,得到的次硫酸氢钠甲醛产品质量可达到HG2281—1992一级品标准,应用该工艺在湖南中成化工有限公司建成了国内第1套产能6 000 t/a生产装置。
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| 关 键 词： | 次硫酸氢钠甲醛 合成 生产应用 |
Study on synthesis and industrial production of formaldehyde sodium sulfoxylate by one-stage process |
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| TIAN Wei-jun,YI Wei-guo.Study on synthesis and industrial production of formaldehyde sodium sulfoxylate by one-stage process[J].Modern Chemical Industry,2010,30(3). |
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| Authors: | TIAN Wei-jun YI Wei-guo |
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| Abstract: | A new one-step synthetic process for formaldehyde sodium sulfoxylate with formaldehyde,sodium bisulfite and zinc powder as raw materials is introduced.Its reaction mechanism is studied,and the optimum operational conditions are as follows:m(Zn)∶m(Na_2S_2O_5)∶m(CH_2O)=9∶10∶8,activation temperature ≤45℃,the highest reaction temperature of 95-102℃,and pyroreaction time is 90 minutes,the formaldehyde sodium sulfoxylate thus is got and its quality can reach the standard of HG 2281-1992.The new technology is successfully applied in Hunan Zhongcheng Chemical Company Ltd.with the formaldehyde sodium sulfoxylate production capacity of 6 000 t/a. |
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| Keywords: | formaldehyde sodium sulfoxylate synthesis production practice |
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