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我国维生素C生产过程甲醇挥发损失的估算

沈伯雄 胡国丽 李冬倩

沈伯雄, 胡国丽, 李冬倩. 我国维生素C生产过程甲醇挥发损失的估算[J]. 环境科学研究, 2012, 25(12): 1387-1392.
引用本文: 沈伯雄, 胡国丽, 李冬倩. 我国维生素C生产过程甲醇挥发损失的估算[J]. 环境科学研究, 2012, 25(12): 1387-1392.
SHEN Bo-xiong, HU Guo-li, LI Dong-qian. Estimation of Methanol Volatilization Loss from Vitamin C Production Processes in China[J]. Research of Environmental Sciences, 2012, 25(12): 1387-1392.
Citation: SHEN Bo-xiong, HU Guo-li, LI Dong-qian. Estimation of Methanol Volatilization Loss from Vitamin C Production Processes in China[J]. Research of Environmental Sciences, 2012, 25(12): 1387-1392.

我国维生素C生产过程甲醇挥发损失的估算

基金项目: 国家环境保护公益性行业科研专项(201109004);国家自然科学基金项目(51176077);天津市自然基金重点项目(12JCZDJC29300)

Estimation of Methanol Volatilization Loss from Vitamin C Production Processes in China

  • 摘要: 通过对我国主要维生素C生产厂家的生产工艺及主要VOCs甲醇的排放节点(包括酯化反应、离心机排气、精馏塔尾气、储罐呼吸)的调研和分析,结合行业协会和国家统计局统计的数据,利用生产过程物料衡算和中国石油化工系统经验公式,估算了生产单位质量(103 t)维生素C各排放节点甲醇的挥发损失量,并且建立了2007—2011年主要维生素C生产厂家甲醇的年挥发损失清单. 结果表明:生产单位质量维生素C时,酯化反应节点甲醇的挥发损失量为4.25 t/103 t,离心机排气为3.36 t/103 t,精馏塔尾气为0.63 t/103 t,储罐呼吸为0.35 t/103 t;甲醇挥发损失主要集中在酯化反应和离心机排气2个排放节点,二者挥发损失量各占排放节点挥发损失总量的50%和39%;2007—2011年我国10家主要维生素C生产厂家甲醇的年挥发损失总量已达1 000 t以上.

     

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出版历程
  • 收稿日期:  2012-06-21
  • 修回日期:  2012-09-28
  • 刊出日期:  2012-12-25

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